Technical Papers OF THE BUREAU OF SPORT FISHERIES AND WILDLIFE 28. Studies of Estuarine Dependence of Atlantic Coastal Fishes // QL UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE BUREAU OF SPORT FISHERIES AND WILDLIFE Technical Papers. — This publication series of the Bureau of Sport Fisheries and Wildlife comprises reports of investigations related to sport fish and sport fisheries. Each is published as a separate paper, but for economy several may be issued in a single cover. The Bureau distributes a limited number of these reports for the use of Federal and State agencies and cooperators. 1. Distribution of Phytoplankton Populations in Sandy Hook Bay and Adjacent Areas in Rela- tion to Hydrographic Conditions in June 1962, by Teruyoshi Kawamura. 1966. 37 p. 2. Zooplankton Communities of the Navesink and Shrewsbury Rivers and Sandy Hook Bay, New Jersey, by Isamu Yamazi. 1966. 44 p. 3. Observations on the Marine Cladoceran Penilia avirostris in Northwestern Atlantic Waters, by Norberto Delia Croce. 1966. 13 p. 4. Flathead Lake (Montana) Fishery Investigations, 1961-64, by Otis Robbins, Jr., with statistical analysis by Donald D. Worlund. 1966. 45 p. Ecology of Gila Trout in Main Diamond Creek in New Mexico, by Danny M. Regan. 1966. 24 p. Studies of Caloric and Vitamin Levels of Salmon Diets, by Laurie G. Fowler, J. Howard McCormick, Jr., and Allan E. Thomas. 1966. 14 p. Vitamins Essential for Growth of Channel Catfish, by Harry K. Dupree. 1966. 12 p. Effects of Age, Growth, and Diet on Characteristics of Salmon Fingerlings, by Joseph W. Elliott, Laurie G. Fowler, and Rober E. Burrows. 1966. 11 p. Response of Channel Catfish Fingerlings to Different Levels of Major Nutrients in Puri- fied Diets, by Harry K. Dupree and Kermit E. Sneed. 1966. 21 p. Marking Fish With Dyes and Other Chemicals, by Dean E. Arnold. 1966. 44 p. Surface Temperature Gradients Observed in Marine Areas Receiving Warm Water Discharges, by James L. Squire, Jr. 1967. 8 p. Seasonal Abundance of Aquatic Invertebrates and Their Utilization by Hatchery-Reared Rainbow Trout, by Harry D. Kennedy. 1967. 41 p. Test of Different Components in the Abernathy Salmon Diet, by Laurie G. Fowler and Joe L. Banks. 1967. 18 p. Interspecific Hybridization of Esocids: Hatching Success, Pattern Development, and Fer- tility of Some F^ Hybrids, by Keen Buss and Jack Miller. 1967. 30 p. Brook Trout of Great Smoky Mountains National Park, by Robert E. Lennon. 1967. 18 p. Effects of Alkyl Benzene Sulfonate on Rainbow Trout, by Thomas J. Hassler, John M. Neuhold, and William F. Sigler. 1967. 15 p. Tissue Changes in Puffers Exposed to Methoxychlor and Methyl Parathion, by Ronald Eisler. 1967. p 15 p. Fish Sampling and Estimation of Relative Abundance in Lewis and Clark Lake, by Charles H. Walburg. 1969. 15 p. Use of an Echosounder in Measuring Distribution of Reservoir Fishes, by James W. Mullan and Richard L. Applegate. 1969. 16 p. Some Effects of Silt Turbidity on Behavior of Juvenile Largemouth Bass and Green Sunfish, by Norman W. Heimstra, David K. Damkot, and Norman G. Benson. 1969. 9 p. Biological Characteristics of the Sauger Population in Lewis and Clark Lake, by William R. Nelson. 1969. 11 p. Biology of the White Crappie in Lewis and Clark Lake, by Richard E. Siefert. 1969. 16 p. Operation of Abernathy Channel for Incubation of Salmon Eggs, by Allan E. Thomas and J. M. Shelton. 1968. 19 p. 24. Biology of the Crayfish Orconectes causeyi and Its Use for Control of Aquatic Weeds in Trout Lakes, by Jack L. Dean. 1968. 15 p. 25. Toxicity of Pesticides to the Crustacean Gammarus lacustris , by Herman 0. Sanders. 1969. 18 p. 26. Tests of Vitamin Supplements and Formula Changes in the Abernathy Salmon Diet, 1966-67, by Laurie G. Fowler and Loe L. Banks. 1969. 19 p. 27. Influence of Corn Oil and Beef Tallow on Growth of Channel Catfish, by Harry K. Dupree. 1969. 13 p. 5. I- 6. 1 > c (_ 7. a. 8. c c c 9. 'r- 10. 11. 12. 13. 14. 15. 16. 17. 18. |M 01 19. > u 20. u B o 21. B H 22. 23. Technical Papers OF THE BUREAU OF SPORT FISHERIES AND WILDLIFE 28. Studies of Estuarine Dependence of Atlantic Coastal Fishes By John Clark, W. G. Smith, Arthur W. Kendall, Jr., and Michael P. Fahay cO r-H -P .-I m co cd -o o c o v O •H • ■** Ss c (0 U >-* 2 ■p JS < -p u cm < O UNITED STATES DEPARTMENT OF THE INTERIOR, WALTER J. HICKEL, SECRETARY Leslie L. Glasgow, Assistant Secretary for Fish and Wildlife, Parks, and Marine Resources Fish and Wildlife Service, Charles H. Meacham, Commissioner Bureau of Sport Fisheries and Wildlife, John S. Gottschalk, Director Washington, D.C. • August 1969 STUDIES OF ESTUARINE DEPENDENCE OF ATLANTIC COASTAL FISHES Data Report I: Northern Section, Cape Cod to Cape Lookout. R. V. Dolphin Cruises 1965-66: Zooplankton volumes , mid- water trawl collections , temperatures and salinities . By John Clark, W. G. Smith, Arthur W. Kendall, Jr., and Michael P. Fahay Sandy Hook Marine Laboratory Highlands , New Jersey 07732 In 1965, the Sandy Hook Marine Labora- tory began research o'n the extent to which migratory fishes of the Atlantic coast depend on estuaries as essential habitat during the early period of their lives . The final goal is to deter- mine the effects on fishes of the physical dis- ruption and pollution of estuaries that have accompanied accelerated coastal development of the last two decades . The young of 60 to 70 percent of the economically important Atlantic species inhabit estuarine environments at some time during their first year of life (McHugh, 1966; Clark, 1967). Many species whose young are estuarine dependent spawn offshore, and their progeny,, while still very young, swim shoreward or are transported there by currents to take up life in the estuaries for part of their first year (Clark, 1967). Although it is widely assumed that estuarine habitat is necessary for survival of those Atlantic species whose young are found in estuaries, the assumption can be verified only with assurance that the young are absent or scarce in the open ocean . The juveniles of any species found in estuaries might be the whole of the population or only a part of a population that occurs largely in the open ocean. We have no estimate of the proportion of the young fishes that enter estuaries . To obtain data on ocean occurrences of larval and juvenile fishes or on offshore spawning areas we began our research on estuarine dependence with a systematic sur- vey of the Atlantic continental shelf to locate spawning areas and seasons and to follow the movements of larval and juvenile stages away from the spawning grounds . In this report we present the basic data from our first series of surveys , the northern section, which includes eight cruises of the research vessel Dolphin (fig. 1) from Cape Cod, Mass . , to Cape Lookout , N . C . , during the 1-year period, December 1965 to December 1966. The data reported here include temperatures, salinities, zooplankton volumes, and the mid- water trawl collections of fishes. Our collection of eggs and larval fishes is under study and will be reported in future publications . We acknowledge the assistance of the following biologists from cooperating laboratories whose participation guaranteed the success of the early cruises: John C. Poole, New York Depart- ment of Conservation and Paul E . Hamer , Walter S , Murawski, Jr., and Ronald White, New Jersey Department of Conservation and Economic De- velopment. The following colleagues assisted us in identifying certain species in the midwater trawl collections: C. Richard Robins , University of Miami, Institute of Marine Sciences, Miami, Fla.; and John A . Musick and John McEachran, Virginia Institute of Marine Science, Gloucester Point, Va . We extend our thanks to Gerald Savitz of the Sandy Hook Marine Laboratory for his painstaking preparation of all graphic material. Technical Paper 28: Bureau of Sport Fisheries and Wildlife Figure It— R. V. Dolphin , offshore research vessel of the Sandy Hook Marine Laboratory. SURVEY DESIGN We wanted to sample ichthyoplankton of the continental shelf from Nantucket Shoals to Cape Lookout as frequently as possible during the year . We planned to complete each cruise in 2 weeks, with cruises about 6 weeks apart. This is the minimum interval consistent with ship and equipment upkeep, logistics, processing of collections, and sharing the ship with other laboratory research projects . Although gear breakdowns, adverse weather, and the usual problems of ship use delayed or prolonged some cruises, we completed eight plankton surveys with the Dolphin in the period December 1965 to December 1966. We selected the Gulf V plankton net for sampling fish eggs and larvae because of the following favorable characteristics: (1) The Gulf V can be towed at speeds over 5 knots and thus should have higher capability for capture of larvae during daytime than stramin nets which must be towed at 2 knots or less and thus allow many larvae to escape because of visual warning; (2) the Gulf V has a larger mouth opening than most other high-speed plankton nets, yielding higher catches of eggs and larvae per tow and providing sample sets of higher reliability for comparison; (3) flow -through characteristics of the net are good enough to prevent extensive damage to larvae which could make identification" difficult; (4) the Gulf V is simple in design and rugged in construction, thus guaranteeing a minimum of trouble in constant use aboard ship. The northern sector of the Atlantic continental shelf is characterized by a seasonal thermocline that develops in the spring and re- mains through early fall (Walford and Wicklund, 1968). The thermocline is typically shallower nearest shore, starting at 8 to 10 meters (4 .4 to 5.5 fm.) and is deeper offshore, starting at 15 to 30 meters (8.2 to 16.4 fm.). Therefore, to in- sure sampling of the whole water layer above the thermocline we decided to collect to a depth of 33 meters (18 fm.). We used two Gulf V nets simultaneously, at all stations where depth per- mitted, in order to sample separately the upper and lower sectors of our sampling depth range. The tows were step-oblique, the upper net sam- pling from to 15 meters, the lower from 18 to 33 meters. Clark, Smith, Kendall, and Fahay: Atlantic Coastal Fishes --Data Report 1 Sampling stations were laid out along 14 transects situated as normal to the adjacent beach and as parallel to each other as the coast- line configuration would permit (fig. 2). Each transect began at a point as near shore as water depths would allow the Dolphin to enter and ex- tended seaward to the edge of the continental shelf. Lengths of transects varied with the width of the shelf from 20 to 75 nautical miles (37 to 130 km.). The 92 sampling stations were spaced along the 14 transects as follows: 5 miles (9.2 km.) apart inshore, 10 miles (18 .4 km.) apart at intermediate distances from shore, and 15 miles (27.8 km.) apart offshore. It was necessary to deviate from this plan in some in- stances to conform with the bathymetry of the continental shelf. Dolphin cruises are designated by the initial of the ship and the year, and numbered consecutively during the year; thus, D-66-1 was the first cruise of the Dolphin in 1966. Each station is designated by a transect letter followed by a number . Station coordinates are given to the nearest 0.5 miles (0.8 km.) in the accompanying table. Station locations remained unchanged on all cruises except on transect P where they were altered after the first and third cruises to provide more variation in water depth. INSTRUMENTS AND COLLECTING GEAR Surface water temperatures were measured with stem thermometers accurate to + 0.1° C. (manufacturer's specifications). Vertical temperature profiles were obtained with a mechanical bathythermograph. A strip- chart recorder was installed beginning with cruise D-66-7, to provide a continuous record of surface temperatures . Salinities were measured with a portable salinometer (which also provided supplementary temperature data). The Gulf V high-speed plankton sampler (fig. 3) consists of a conical net supported by a stainless steel cylindrical frame with a mouth diameter of 40 cm. (16 in.) and a length of 130 cm. (51 in.). Netting is 0.33-mm. (0.013- in.) monel wire, with 30 meshes per inch (ca. 12 meshes/cm.) providing an aperature Cape lookout Figure 2:— R. V. Dolphin Survey, 1965-66. Locations of transects and collecting stations. size of 0.52 mm. (0.020 in.). A removable stainless steel cup with a flushing window of the same netting is attached to the rear of the net. 6 Technical Paper 28: Bureau of Sport Fisheries and Wildlife R. V. Dolphin survey, 1965-66. Cruise schedule and transect sampling order Cruise Dates Transect sequence 0-65-1* 0-66-1 D-66-3 D-66-5 D-66-7 0-66-10 D-66-12 D-66-1U Dec. 3 - Dec. 15, 1965 Jan. 25 - Feb. 9, 1966 Apr. 6 - Apr. 22, 1966 May 12 - May 2k, 1966 June 17 - June 29, 1966 Aug,. 5 - Aug. 26, 1966 Sept. 28 - Oct. 20, 1966 Nov. 9 - Dec. k, 1966 C to P B, A, C to P A to E2, F to P, E8 to E3 A to Hk, P, N5 A to 0, L to P, K to E A to P M, N, L to A, P El, to E7, F1 to F6, G to J, P to K, F7, E8, D to A The complete net weighs 35 pounds (16 kg.)- In order to provide the least obstruction of flow of water into the net, it is connected to :he towing cable with a two-part bridle of 0.25 -inch (6. 4 -mm.) chain, rigged from eyes at either side of the mouth of the net. A 50 -pound (23 kg.) cast bronze, high-speed depressor is suspended from the sampler by 7 feet (2.1 m .) of 0.25- inch (6. 4 -mm.) cnain. Figure 3: — Gulf V high-speed plankton net with depressor attached. We used a Cobb Pelagic Trawl -Mark II, scaled down to one -third the linear dimensions of that described by McNeely (1963), in our efforts to collect young nektonic stages of fish large enough to avoid the plankton nets . This mid -water net was made of 1 .5 -inch (38 -mm.) stretch mesh, No. 9 nylon thread; the cod end was lined with knotless nylon netting of 0.25- inch ( 6 .4 -mm . ) stretch mesh . To enhance the vertical opening of the net, 5 -inch (127 -mm.) diameter floats were fastened at intervals on the head-rope and 0.25 -inch (6 .4 mm .) chain was lashed along the footrope . A pair of ply- wood hydrofoils, reduced to 40 percent of the area of those described by McNeely (1963), was used to provide horizontal opening of the net. Throughout the survey, minor modifications were made to the gear in an attempt to improve its performance. THE SURVEY Hydrographic data obtained at each station consisted of vertical temperature and salinity profiles, surface temperatures , and records of weather conditions . Surface tem- perature patterns are shown for each survey cruise in Appendix figures Al to A8 . Bottom temperatures for each cruise are shown in Appendix figures Bl to B8 . Vertical temperature profiles are shown for each transect of each cruise in Appendix figures CI to C25. Salinity was measured at the surface and at 5 -meter depth intervals as determined by markings on the RS-5 salinometer cable. The cable was kept as near vertical as possible by Clark, Smith, Kendall, and Fahay: Atlantic Coastal Fishes- -Data Report I attaching a 10 -pound (4 .5 -kg.) weight to the sensor and bv moving the ship slowly into the direction of drift with the ship's active -rudder propeller. The salinometer was supplied with a total of 50 meters (27 fm.) of cable which was sufficient to measure salinities to the maximum plankton sampling depth of 33 meters (18 fm .). Surface isohalines for each cruise are shown in Appendix figures Dl to D8 . Vertical isohalines are shown for each transect of each cruise in Appendix figures El to E25. Bottom isohalines are not shown because salinity readings are not available for the deeper parts of the shelf. The two Gulf V plankton nets were towed simultaneously for 30 minutes at each station at a constant engine speed, normally covering a distance over the bottom of 2.5 nautical miles (4 .8 km .) per tow . Direction of tow followed the transect line except when strong head winds necessitated altering the course to maintain towing speed. With a mouth diameter of 40 cm . , 640 cubic meters of water would pass through the Gulf V during a 30-minute tow, if a straining efficiency of 100 percent is assumed. At the end of each tow the nets were retrieved, washed down and the plankton samples placed in quart jars for preservation with 5 percent formalin buffered with borax . In the oblique tow method used, each Gulf V net was sampled for 5 minutes at six 3-meter (10-ft.) depth increments beginning at the surface. The desired sampling depths were determined by multiplying the amount of wire out by the cosine of the wire angle . In water depths of less than 33 meters the number of steps was reduced for the deep net , and the towing period was increased for the remainder of the steps of the 30-minute tow. Where depths were less than 18 meters we used only the shallow net and where they were less than 15 meters, we reduced the number of steps as we did for the deep net. Depths of the continen- tal shelf along our transects were such that we were able to sample from surface to bottom on 61 percent of the stations occupied. The Cobb mid-water trawl was towed for 30 minutes at a speed of 3 knots (5 .6 km. /hour) on a course reciporcal to that of the Gulf V tow . Depth of towing was determined in the same manner as for the Gulf V net. While towing the trawl, we adjusted its depth to position it ver- tically in layers where the ship's depth recorder indicated concentrations of pelagic fish. It was not possible to use the trawl at all stations because of weather and operational difficulties . The trawl was not used during cruise D-66-1 and was set at only three stations during cruise D-66-3. The maximum number of tows was made on cruise D-66-1 2 when 77 of the 92 regular stations were sampled. Station data, including date, time, depth of water, depth range of tow, and number of species captured, are contained in Appendix table II for the 371 trawl tows completed. Trawl collections were separated to family or species immediately after capture. We counted, measured, and preserved specimens in appropriate concentrations of formalin ranging from 5 to 20 percent. We weighed some of the larger catches of stromateids and clupeoids and drew random sub-samples for measurements. The fishes captured are listed by cruise in Appendix table III . Names are according to Bailey, et al. (1960), except for the family Monacanthidae where Berry and Vogele (1961) are followed. Loran navigation was the principal method used for positioning the Dolphin on collecting stations . Increased accuracy was obtained on inshore stations by use of radar, land ranges, and by visual sightings of buoys and lightships. Because of inherent limitations of Loran navigation, accuracy of positioning the Dolphin on offshore stations cannot be considered better than +1.0 nautical mile (1 .8 km.). The order in which the transects and stations were occupied varied from cruise to cruise being dependent on weather and operational factors (table 1). During our initial cruise (D-65-4) we were not able to occupy stations on transects A and B because of foul weather. Similarly, on cruise D-66-1 we were forced to cancel stations A -3 through A -7 because of foul 8 Technical Paper 28: Bureau of Sport Fisheries and Wildlife weather and station F-l because of an outflow of ice from Delaware Bay. All stations were occupied on the ensuing six cruises . During cruise D-66-14, stations F -7 and E-8 were initially occupied in sequence with other stations on the respective transects but since the plankton samples were subsequently lost in rough weather, we reoccupied these stations later in the cruise. LABORATORY PROCEDURES The workload of identification was divided by assigning to each project biologist certain families of fish appearing in the collections. Technicians were assigned the task of removing fish eggs and larvae from the Gulf V samples . Each sample was processed entirely by one technician. Sorting was done by placing individual 2 -milliliter (0.12-in .) aliquots of plankton in a petri dish and examining each for fish eggs and larvae under a micro- scope at a magnification of 7 to 10 X. The larvae from each sample were provisionally separated into groups based on physical similarities. These groups consisted of species from one or more families . To estimate the thoroughness of re- moval of ichthyoplankton from the samples, routine quality control was maintained whereby aliquots amounting to about 6 percent of the total were taken at random as sorting proceeded and reexamined by a second technician. A com- parison of the number of fish eggs and larvae found during each examination of the test aliquots provided a measure of the quality of the sorting and a means of evaluating and improving the technician's work. In the few instances where more than 10 percent of the ichthyoplankton had been overlooked, the sample was re-sorted. This checking technique was developed gradually during the course of sample processing and was used fully during sorting of five of the eight cruises . From these cruises we found that 98 to 100 percent of the eggs and 91 to 97 percent of the larvae were removed during the first sorting of samples when grouped by cruise. Besides checking random aliquots during sorting, an additional aliquot from the whole sample was checked immediately after the sorting of each sample was finished. Samples from the cruises sorted before this system was implemented were examined during volume measurement, and re-sorted if sufficient numbers of fish eggs or larvae were found to justify it . The volume of plankton taken in our standardized tows was measured to estimate the standing stock of plankton of sizes large enough to be retained in the Gulf V net. The dis- placement method was used as had been done in two previous studies of Atlantic coast waters of the United States (Bigelow and Sears, 1939; Deevey, 1960). Methods for improving dis- placement measurements of plankton have been developed and some were employed in this study (Ealey, 1954; Frolander , 1954; Tranter , 1960; Yentsch and Hebard, 1957). Because plankton volumes decrease significantly with time during the first few months after preservation (Ahlstrom and Thrailkill, 1963), measurement of the samples was delayed for at least 6 months after collection. After the fish eggs and larvae and seston items displacing more than 3 milli- liters were removed, the remaining volume of plankton and preservative was measured in a graduate and poured into a filtering funnel con- taining a disc of nylon mesh with 0.5 -mm. (0.02-in.) apertures. The preservative was removed by vacuum filtration and the volume of the filtrate was determined. The difference between the volume of plankton and preservative and of the filtrate was recorded as the plankton volume. The measurements are listed, as milliliters of plankton per tow, in Appendix table II and are shown graphically in Appendix figures Fl to F8 . REFERENCES Ahlstrom, Elbert H., and J. R. Thrailkill. 1963 . Plankton volume loss with time of preservation. Reports California Coopera- tive Oceanic Fisheries Investigations, Vol. 9, pp. 57-73. Bailey, Reeve M., Ernest A. Lachner, C. C. Lindsey, C. Richard Robins, Phil M. Roedel, W. B. Scott, and Loren P . Woods. 1960. A list of common and scientific names Clark, Smith, Kendall, and Fahay: Atlantic Coastal Fishes --Data Report I of fishes from the United States and Canada. American Fisheries Society, Special Publication No. 2, 2nd Edition, 102 p. Berry, Frederick H., and Louis E. Vogele . 1961 . Filefishes (Monacanthidae) of the Western North Atlantic . U.S. Fish and Wildlife Service, Fishery Bulletin 181, Vol. 61, pp. 61-109. Frolander, Herbert F. 1954. A plankton volume indicator . Journal du Conseil international pour l'Explora- tion de la Mer, Vol. 22, No. 3, pp. 278- 283. McHugh, J. L. 1966. Management of estuarine fisheries. American Fisheries Society, Special Publication No . 3, pp. 133-154. Bigelow, Henry B. , and Mary Sears . 1939. Studies of the waters of the continen- tal shelf, Cape Cod to Chesapeake Bay. III. A volumetric study of the zooplank- ton. Memoirs Museum of Comparative Zoology, Vol. 54, No. 4, pp. 183-378. Clark, John R. 1967 . Fish and Man. Conflict in the Atlantic Estuaries. American Littoral Society, Special Publication No. 5, 78 p. McNeely, R. L. 1963. Development of the Cobb pelagic trawl - a Progress Report, Second World Fishing Gear Congress. May 25-31, 1963. London. FAO paper No. 1, 14 p. Tranter, D.J. 1960. A method for determining zooplankton volumes. Journal du Conseil international pour 1' Exploration de la Mer, Vol. 25, No. 3, pp. 272-278. Deevey, Georgiana B. 1960. Plankton studies . I. The zooplankton of the surface waters of the Delaware Bay region. Bulletin of Bingham Oceano- graphic Collections, Vol. 17, No. 2, pp. 5-53 . Ealey, E. H. M. 1954 . Letter to the Editor: A new method of net plankton determinations . Journal du Conseil international pour 1' Explora- tion de la Mer, Vol. 19, No. 3, p. 368. Walford, Lionel A., and Robert I. Wicklund. 1968. Monthly sea temperature structure from the Florida Keys to Cape Cod. Serial Atlas of the Marine Environment. Folio 15, American Geographic Society: 1 p . , 16 pi . , Appendix . Yentsch, Charles S., and J. Frank Hebard. 1957. A gauge for determining -plankton volume by the mercury immersion method. Journal au Conseil international pour l'Exploration de la Mer, Vol. 22, No. 2, pp. 184-190. Appendix Table I:--R. V. Dolphin survey, 1965-66. Locations of collecting stations Locations are given by coordinates of North Latitude over West Longitude, listed to the nearest 0.5 nautical mile (0.9 km.) 10 Appendix TRAN- SECT STATION 41°17.0' 41°12.0' 41°07.0' 40°57.0' 40°47.5' 40°32.5' 40°17.5' A 70°48.0' 70°47.0' 70°46.0' 70°44.5' 70°42.5' 70°40.0' 70°37.0' 41°03.5' 40°58.5' 40°54.0' 40°44.0' 40°34.5' 40°20.0 I 40°05.0' B 71°51.5' 71°49.5' 71°47.5' 71°44.0' 71°40.5' 71°35.0' 71°29.5' 40°35.0' 40°31.0 ! 40°27.0' 40°19.0' 40°10.5' 39°58.5' 39°46.5' 39°34.0' 73°17.5' 73°14.0* 73°10.0' 73°03.0 ! 72°55.0' 72°44.5' 72°33.5' 72°22.5' D E F G H J K L M N 39°51.5' 39°48.5' 39°45.0' 39°39oO' 39°32.5' 39°23.5' 39°14.0' 39°06.0' 74°04.0' 73°59.0' 73°54.0' 73°43.5' 73°33.5' 73°19.0' 73°03.0' 72°50.0' 39°17.0' 39°14.0' 39°11.0' 39°05o5' 38°59.0' 38°54.0' 38°45.0' 38°36.0' 74°31.0' 74°25.5' 74°20.5" 74°09.5' 73°59.0' 73°49.0' 73°33.5' 73°18.0' 38°46.0' 38°43.5' 38°40.5' 38°35.0' 38°29.0' 38°21' 38°13.0' 75°03.5' 74°58.0' 74 52.5' 74°41.5' 74°30.0' 74°13.5' 73°57.5' 38°07.5' 38°04.5' 38°01.5' 37°56.0' 37°50.0' 37°42.0' 75°09.5' 75°04.5' 74°59.0' 74°48.5' 74°38.0' 74°22.5' 37°34.0' 37°32.0' 37°30.5' 37°27.0' 37°23.5' 37°18.5' 37°16.5' 75°33.5' 75°28.0' 75°22.5' 75°10.0' 74°58.0' 74°40.5' 74°34.0 I 36°55.5' 36°55.0' 36°54.5* 36°53.0' 36°52.0 36°50.5' 36°48.5' 75°58.5 I 75°52.0' 75°45.5' 75°33.0 I 75°21.0 ! 75°02.5" 74°4A.5' 36°23.0' 36°23.0' 36°22.5' 36°22.5' 36 o 22.0' 36°21.5' 36°21.0' 75°48.5' 75°42.0' 75°36.0 I 75°23.5' 75°11.0' 74°58.5' 74°46.0' 35°46.5' 35°46.5' 35°46.0' 35°45.5' 35 o 45.0' 75°30.0' 75°24.0' 75°17.5' 75°05.0' 74°52.5' 35°18.5' 35°16.5' 35°14.5' 35°12.5' 35°10.5' 75°29.0' 75°23.5' 75°18.0' 75 o 12.0' 75°07.0' 35°01.0' 34°56.0' 34°51.5' 34°42.0' 34°33.0' 75°57.0' 75°55.0' 75°52.5' 75°48.0' 75°44.0' p l/ 34°38.0' 34°29.5' 34°21.0' 34°13.0' 34°04.5' 76°40.0' 76°33.5' 76°26.5' 76°20.0' 76°13.0' 2/ 34°38.0' 34°34.0' 34°29.5 ! 34°17.0* 34°04.5' 76°40.0' 76°37.0' 76°33.5' 76°23.5' 76°13.0' 37 34°38.0 ! 34°34,0' 34°25.0' 34°17.0' 34°04.5' 76°40.0' 76°37.0' 76°36.5' 76°23.5' 76°13.0' 1/ Cruise D-65-4. 2/ Cruises D-66-1 and D-66-3. 3/ Cruises D-66-5 through D-66-14. 11 Appendix Table II:--R. V. Dolphin survey, 1965-66. Station data for Gulf V plankton net and midwater trawl tows Stations are listed in the sequence of completion of plankton tows. Light regimens are listed as Dawn or Dusk when sunrise or sunset occurred during the plankton tow at any station. The biomass of plankton for each tow is represented as a displace- ment volume in milliliters, measured after removal of ichthyoplankton and seston items larger than 3 milliliters. When materials in the sample prevented measurement by blocking filtration the predominant material is noted as follows: D, dinof lag- elates; T, thaliaceans ; and S, sediments. Starting times only are given for the standard 30-minute midwater trawl tows; when tows were other than 30-minutes long, both starting and finishing times are given. 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oo oo cm co vD in ro M h O ,jz x J2 00 00 OO CO 00 00 00 •H t-I -r-1 Q -H -r-l T-I Z Z Z Z Z Z r-» ^o cn oo r-» in o^ CN 00 O \0 en m •* 00 ON CO r^ oo CM vf co o- -> -> >-> *"J >-> !-0 *~i in 1 ■^x. -c J3 x; >. >^ >■> >. >! i^ cn cn tt 0J 00 0(1 cn m cn CO CO cn a Q •H Z •r-l Z •H z •H z n a a n a CJ oo r^ CO MD r^ 00 vO ro rs o> CO r- 00 O^ o cm cs N h i-i ro -j no o oo tn N Hvt N N O 00 LO i-l CTv r*» o r*" cn cn ,-h ^ O r^ vd r^ m io H o oo CN CN i-4 4-> 4-1 4-1 00 00 0tf •H v-l -H z z z 00 on O no i— i i— i O •— i •— < ai h vo m on n r-~ i — i — r~~ r~ X X X X >n >n >> 00 00 00 00 co CO CO •H -H -H -H Q Q Q Z Z Z Z r^ vd in in cn tr> cn CN CO m CN vt CN CN h (N h pi 00 0> n CN CN O O O O r-l r^ r-^ co oo oo oo oo co cm 1-4 j _i _! m cn cn o ^ vO m CJ r-t cn vD o Q CN vO O m ID r^ o vO r^- * CJN CN CO cn CN CN CO vO co vo in i^ CN CO CO vt in o O ON l> CM Ol sf O ON rH CI sf on i-i cm o co m i-l CM CN O O O O O O i-i .-I co o o o o o o o O cm co ^ O O cj> n 00 00 00 00 00 S CO •H -H -H -H -H co Q z z z z z a CO H cjj a as H te co W H O U4 o a H w -J os 3S H CO H H w to w H o < a) Q a C vl- W 1— 1 CO «H 1 H 4-1 vD 3 CO vO ftS 4J 1 CJ CO Q r-i cm —i .— i oo oo *x> o *■£> r*» o> on i-H ?-H i— I i— l i-H O (3 O I — I 1— I . — I oo m %,£ >% CO 00 00 00 00 3 CO 00 CO Q -H -H -H -H ca Q -H Q z z z z a z int^tN(McMinr-ii^r^ mr^oro H CM Cvl CO O H CM CM CM CM IT) H CM CM O n h \o r^ vo oo on cm o ^ CM -d- vO O ^O CO CO H H (N (O CM O CM 00 r-l CM o> oo co oo m 4-> 4-> 4-> 4J 4-> 4-> 4-1 J2 -C £ ,C rC JZ -C oo oo oo oo oo oo oo •H >H -H -i-l -H -i-l -H Z Z Z Z Z Z Z r~ ^o o ^ co o I s * co in --I m i—i i—i i-H on o cm co i-i co in .-I CM CM CM O O O CO CO CO CO d* .-I cm co ^ m vo r-- I I I I I I I CQ « ffl « ffl ffl ffl do * o >—< in oo -d- m co o> CO CO on oo m oo o oo i— * i— i in CO CM o CM CM CM in m in o in H t4 Q Z Z Z 102 C-7, 1, 41 (TL) D-66-7 F-2, 10 lbs., NMD P-3, 1, 60.5 G-l, 12 lbs., 62-125 (D) G-2, 3 lbs., NMD L-4, 2, 39-41 (TL) D- 1, 1, 34 (TL) D- 2, 1, 42. 5 (TL) G- 2, 17. 32 -41 (TL) K- 1, 45 17 -38 (TL) L- 1, 3, 30- 37 (TL) L- ■2, 8, 23- 36 (TL) M- ■1, 20 , If >-31 (TL) M- ■3, 1, 33 (TL) M- ■4, 7, 19. 5-43.0 (TL Unic ientif ied D-66-10 47 Leptocephali (Unidentified) (Cont . ) D-66- LO A-4 , 1, 86 A-5 , 2, 74-87 B-4 , 1, 79 K-4 , 12, 47-93 K-5 , 3, 39.5-82 M-l , 1, 57 D-66- L2 B-3 , 1, 90.5 B-4 , 2, 42-103.5 B-5 1, 83 B-6 1, 103 C-5 1, 85 L-2 , 1, 87 L-3 43, 46-110 & 4, ca.25 L-4 13, ca. 50-80 M-2 1, 76 M-3. 17, ca. 60-90 N-2 11, 51-98 D-66-1 .4 L-l 1, 60 M-l. 4, 25-64 M-4 5, 43.0-63.5 M-5 5, 54-62 P-l 2, 57-63 P-2 2, 56.5-63.5 SCOMBERESOCIDAE Scomberesox saurus (Walbaum) Atlantic saury D-66-10 C-2, 1, 285 BEL0NIDAE Strongylura marina (Walbaum) Atlantic needlefish D-65-4 N-2, 1, 554 (TL) D-66-12 H-l, 1, 298 D-66-14 P-2, 1, 285 HEM1RAMPHIDAE Hemiramphus brasiliensis (Linnaeus) ballyhoo D-66-5 K-3, 1, 332 D-66-10 J-4, 1, 157 GADIDAE Enchelyopus cimbrius (Linnaeus) fourbeard rockling D-66-7 C-3, 2, 27.5-32.0 (TL) C-4, 1, 25.5 (TL) C-5, 4, 26.0-32.5 (TL) C-6, 2, 22.0-27.0 (TL) D-6, 2, 24.0-25.0 (TL) K-4, 1, 40.5 (TL) D-66-12 B-5, 1, 11.5 (TL) C-4, 1, 6.5 (TL) Me lanogrammus aeglef inus (Linnaeus) haddock D-66-7 C-4, 4, 20.5-26.0 (TL) C-5, 5, 19.0-36.0 (TL) D-6, 7, 27.5-29.5 (TL) Merluccius bilinearis (Mitchill) silver hake D-66-3 MWT -2, 4, 71-123 D-66-5 E-l , 1, 239 (TL) E-3 , 11, 73-129 E-4 , 4, 88-147 E-5 , 1, 435 (TL) F-l , 7, 76-134 F-2 , 220, 78-159 F-5 3, 109-240 (TL) J-l. 72, NMD J-2. 34, NMD K-l. 2, 158-159 D-66-' 1 C-3. 35, 36-210 (TL) L-l. 2, 163-171 (TL) D-66-] .0 B-7. 6, 19.5-25.5 (TL) C-2. 42, 170-260 (TL) C-3. 8, 173-245 (TL) D-5, 1, 180 (TL) D-6, 6, 158-187 D-7, 1, 15.5 (TL) E-l, 1, 143 (TL) E-3, 1, 235 (TL) F-2, 30, 106-230 H-6, 2, 21-24 (TL) 48 Merluccius bilinearis (Mitchil 1) (Cont . ) D-66-12 B-l. 1, 65 (TL) B-4. 1, 19.5 (TL) B-5. 29, 9.5-28.0 (TL) B-6. 32, 14.5-38.0 (TL) C-6. 8, 13-57 (TL) C-7. 110, 13.0-51.5 (TL) D-6. 4, 32.0-39.5 (TL) E-3. 7, 49-75 (TL) E-4. 19, 34.5-52.0 (TL) E-5. 10, 28.0-61.5 (TL) F-3. 3, 198-232 F-6. 19, 22.5-45.0 (TL) G-3 1, 276 D-66-] L4 B-l 4, 80-318 B-3 13, 21-61 (TL) B-4 4, 33-50 (TL) C-3 , 8, 49.5-82.0 (TL) C-4 , 2, 34-41 (TL) D-l , 11, 272-370 D-2 , 24, 54-379 D-3 , 1, 328 E-l 14, 28-115 E-2 , 2, 71-111 E-3 , 3, 33-77 E-4 , 33, 30.5-76.0 (TL) F-6 41, 32.5-60.0 (TL) F-7 , 3, 36-45 (TL) G-5 , 35, 38-60 K-5 , 1, 41 (TL) Uroph 1 /cis chuss (Walbaum) squiri :el hake D-66-. H-5 , 1, 238 (TL) 3-2 , 2, NMD D-66- LO C-2 , 5, 117-296 (TL) F-2 , 1, 257 K-3 , 1, 64.5 (TL) D-66- 12 B-4 , 4, 13.0-24.0 (TL) B-5 , 52, 11.5-43.0 (TL) B-6 , 7, 13-33 (TL) C-4 , 3, 8-24 (TL) C-5 , 1, 17.0 (TL) C-7 , 6, 11.5-38.5 (TL) D-3 , 5, 49-81 (TL) E-5 , 7, 30.5-49.0 (TL) £ E-7 , 1, 45 (TL) H-6 , 1, 9.0 (TL) J-6 , 8, 32.5-62.0 (TL) Urophycis chuss (Walbaum) (Cont ) D-66-14 A-l, 1, 52.5 (TL) C-3, 1, 40 (TL) U. regius (Walbaum) spotted hake D-65-4 H-6, 1, 31 (TL) K-4, 1, 24 D-66-3 MWT-2, 2, 74-85 D-66-5 J-l, 43, NMD J-2, 90, 125-227 (TL) J-3, 1, 56 (TL) & 3, NMD J-4, 1, 164 (TL) K-l, 12, 74-205 (TL) L-3, 163, 58-182 (TL) M-l, 6, 106-147 (TL) D-66-7 K-5, 3, 110-120 (TL) D-66-10 F-l, 4, 238-303 F-2, 3, 146-210 G-2, 7, 168-264 (TL) K-3, 48, 167-250 (TL) L-l, 3, 190-204 D-66-12 E-4, 1, 283 G-3, 1, 238 J-6, 34, 188-269 D-66-14 B-l, 1, 44 J-5, 11, 16.5-29.5 (TL) K-4, 2, 21.0-32.5 (TL) U. tenuis (Mitchill) white hake D-66-3 2, 258-348 MWT-2, 3, 435-447 (TL) GASTEROSTEIDAE Apeltes quadracus (Mitchill) fourspine stickleback D-66-14 D-l, 1, 50 Gasterosteus aculeatus Linnaeus threespine stickleback D-66-14 A-2, 1, 58 B-l, 1, 51 49 FISTULARIIDAE Fistularia tabacaria Linnaeus cornetf ish D-66-7 P-2, 1, D-66-12 112 (TL) N-2, 2, 45-49 N-3, 1, 103 SYNGNATHIDAE Hippocampus obtusus Ginsburg offshore seahorse D-65-4 H-6, 1, 51 D-66-7 A-1, 1, NMD D-66-10 H-4, 4, NMD K-6, 1, 45 D-66-12 C-4, 1, 17 D-4, 2, NMD E-4, 4, ca. 18-20 E-5, 1, NMD F-4, 1, NMD F-6, 1-, 47 H-5, 1, NMD J-6, 1, 14 K-6, 2, 18-29 D-66-14 C-3, 8, NMD E-4, 1, 18 G-1, 1, 29 G-4, 1, NMD J-1, 1, 22.5 M-2, 1, NMD Syngnathus fuscus Storer northern aipef ish D-66-10 L-l, 1, 247 (TL) D-66-14 B-l, 1, 152 S. pelagicus Linnaeus sargassum pipefish B-66-14 A-2, 4, 137-173 C-3, 1, 99 D-l, 2, 153-176 D-2, 3, 147-192 Unidentified pipefish D-65-4 F-3, 1, 215 (TL) (D) D-66-14 E-l, 2, 131-156 (D) P-l, 2, 268-290 (D) P-2, 2, NMD SERRANIDAE Centropristes striatus (Linnaeus) black sea bass D-66-5 M-l, 1, 95 D-66-10 K-3, 2, 193-196 L-l, 4, 115-179 D-66-12 J-2, 3, 190-198 K-3, 1, 148 D-66-14 J-1, 1, 196 C. philadelphicus (Linnaeus) rock sea bass D-66-10 K-3, 1, 35.5 (TL) Roccus americanus (Gmelin) white perch D-66-5 F-2, 1, 166 LUTJANIDAE Unidentified D-66-12 K-6, 1, 39 L-4, 1, 46 N-3, 1, 35 PR I ACANTHI DAE Pristigenys alta (Gill) short bigeye D-66-12 N-3, 1, 21.5 (TL) Unidentified D-66-12 C-7, 1, 12.5 (TL) 50 POMATOMIDAE Pomatomus saltatrix (Linnaeus) bluef ish D-66-7 C-2, 1, 42 (TL) L-l, 1, 45.5 (TL) D-66-10 H-4, 3, 14-16 (TL) H-5, 3, 16-16.5 (TL) & 1, (mut.) J-l, 1, 128 D-66-12 G-2, 12, 183-219 & 5, 33-51 (TL) D-66-14 J-l, 1, 124 L-2, 1, 54 CARANGIDAE Caranx bartholomaei Cuvier yellow jack D-66-12 L-4, 1, 18.5 (TL) C. crysos (Mitchill) blue runner D-66-12 L-2, 1, 116 L-4, 1, 114 Chloroscombrus chrysurus (Linnaeus) bumper D-66-14 M-4, 3, 22-29 Decapterus macarellus (Cuvier) mackerel scad D-66-12 E-3, 1, 112 D. punctatus (Agassiz) round scad D-65-4 N-5, 2, 23-36 D-66-7 M-3, 1, 37 (TL) D. punctatus (Agassiz) (Cont. ) D-66-1J > D-2, 1, 110 D-6, 1, 55 G-3, 2, 106-112 K-5, 1, 83 K-7, 1, 47 L-2, 2, 56-64 L-4, 3, 69-80 M-3, 1, 105 N-l, 84 , 20-47 D-66-l^ 1, J-2, 58 K-1, 1, 64.5 (TL) K-4, 1, 67 K-6, 1, 64.5 L-2, 4, 61-69 L-4, 4, 59-75 M-4, 1, 72 M-5, 2, 48-57 Selar < ;rumenophthalmus (Bloc! bigeye scad D-66-7 M-2, 1, 21.5 M-3, 7, 20.5-28.0 (TL) M-4, 1, 17.5 (TL) N-4, 10 , 16.5-33.0 (TL) P-3, 1, 25.5 (TL) D-66-10 K-2, 1, 41.5 (TL) D-66-12 F-3, 5, 136-154 G-2, 2, 147-151 J-2, 1, 162 K-1, 1, 85 D-66-14 N-4, 1, 36.5 Selene vomer (Linnaeus) lookdown D-66-7 P-2, 1, 29 D-66-10 L-l, 1, 44 51 Selene vomer (Linnaeus ) (Cont . ) D-66- 12 K-l K-6 L-3 L-5 M-2 M-3 N-2 N-3 D-66- E-l P-l P-2 1 1, 44 1, 48 7, 15-22 (TL) 1, 15 1, 24 (TL) 1, 22 (TL) 4, 15.0-26.5 4, 19.5-27.0 Cynoscion regalis (Bloch & Schneider) 1, 51 1, 49 33, 40-72 Seriola zonata (Mitchill) banded rudderfish D-66-7 L-1, 1, 112 Trachurus lathami Nichols rough scad D-66-7 P-l, 2, 103-108 P-2, 10, 88-114 P-3, 5, 67-105 D-66-10 E-1, 1, 75 L-1, 8, 117-136 M-l, 12, 124-136 D-66-12 M-3, 2, 123-132 D-66-14 J-2, 3, 132-141 POMADASYIDAE Orthopristis chrysopterus (Linnaeus) pigf ish D-66-5 H-l, 1, 155 J-1, 2, 147-179 SC1AENIDAE Bairdiella chrysura (La zepede) silver perch D-66-14 E-1, 17, 94- 130 G-1, 2, 131- 131 J-1, 21, 90- 149 J-4, 1, 145 P-2, 15, 146 -183 weakf ish D-66-5 J-1, 19, 134-255 M-l, 29, 129-162 D-66-7 L-1, 1, 202 D-66-10 F-l, 520, 75-176 F-2, 2, 164-165 L-1, 10, 83-240 D-66-12 F-l, 256, 120-165 F-2, 330, 128-175 F-3, 39, 153-220 G-1, 114, 136-245 J-2, 4, 196-211 D-66-14 E-1, 13, 128-255 F-l, 1, 231 F-2, 5, 174-247 F-3, 1, 191 G-1, 60, 130-239 J-1, 126, 131-170 P-2, 7, 121-211 Leiostomus xanthurus Lacepede spot D-66-7 P-2, 1, 140 D-66-10 K-l, 5, 156-165 L-1, 44, 100-162 D-66-12 J-2, 38, 120-181 J-3, 2, 128-188 D-66-14 J-1, 3, 126-151 P-2, 1, 168 Menticirrhus americanus (Linnaeus) southern kingfish D-66-14 J-1, 1, 195 M. littoralis (Holbrook) gulf kingfish D-66-5 M-l," 1, 154 52 M. saxatilis (Bloch & Schneider) northern kingfish D-66-12 J-2, 14, 153-188 Micropogon undulatus (Linnaeus) Atlantic croaker D-66-5 M-l, 1, 124 D-66-10 L-l, 204, 106-209 D-66-12 J-3, 3, 199-208 M-3, 2, 225-238 D-66-14 P-2, 1, 18.5 (TL) MULLIDAE Mullus auratus Jordan & Gilbert red goatfish D-66-7 P-3, 1, 44.5 (TL) SPARIDAE Stenotomus chrysops (Linnaeus) scup D-65-4 K-6, 1, 164 D-66-3 MWT-2, 15, 223-296 (TL) D-66-5 E-l, 5, 92-109 F-2, 7, NMD H-l, 83, 81-121 H-2, 19, 102-191 H-4, 1, NMD J-2, 34, 61-120 K-l, 1, 100 D-66-7 L-l, 117, 25-133 L-2, 3, 123-125 P-2, 4, 52-81 P-3, 109, 44-236 D-66-10 G-2, 3, 94-141 J-3, 1, 102 K-2, 3, ca.80 L-l, ca.250, ca. 80-120 L-2, 65, 80-112 Stenotomus chrysops (Linnaeus) (Cont. ) D-66-12 A-l, 22, 39.5 (TD-97 J-2, 56, 90-138 J-4, 1, ca.130 K-3, 9, 110-130 L-l, 2, 113-114 L-2, 83, 94-122 D-66-14 L-2, 1, 121 L-3, 1, 116 M-3, 11, 109-129 P-2, 1, 118 CHAETODONTIDAE Holacanthus sp . angelf ish D-66-14 M-5, 1, 26 Unidentified D-66-12 L-4, 1, 13.5 (TL) M-3, 1, 18.0 (TL) LABRIDAE Tautogolabrus adspersus (Walbaum) cunner D-66-7 A-l, 1, 119 (TL) ACANTHURIDAE Acanthurus sp . surgeonf ish D-66-14 M-l, 2, 7-10 (TL) TRICHIURIDAE Trichiurus lepturus Linnaeus Atlantic cutlassfish D-66-14 P-l, 5, 332-410 (TL) P-2, 4, 120-170 (TL) SCOMBRIDAE Auxis thazard (Lacepede) frigate mackerel D-66-10 H-7, 1, 18.5 (TL) K-4, 1, 19.5 (TL) 53 Scomber scombrus Linnaeus Atlantic mackerel D-65-4 F-3, 1, 295 D-66-5 E-4, 3, 189-205 E-5, 38, 184-218 E-6, 15, 176-213 D-66-7 C-5, 10, 12.0 (TL) -23.5 C-6, 3, ca.14 (TL) D-6, 10, 14. 0-22. C (TL) H-5, 19, 32-49 J-5, 5, 35.5-45.0 (TL) K-5, 2, 41.5-43.0 (TL) D-66-10 A-3, 3, 223-243 C-2, 6, 110-126 C-3, 47, 104-132 C-4, ca.3000, 102- 130 C-6, 5, 103-126 C-7, 2, 108-126 D-4, 1, 111 E-1, 1, 140 F-1, 8, ca.140 F-2; 637, 120-157 G-2, 1, 145 H-4, 1, NMD D-66-12 B-l, 1, 146 E-3, 1, (mut.) F-3, 3, 146-151 D-66-14 D-2, 1, 147 E-1, 1, 149 E-3, 1, 172 E-4, 1, 150 Unidentified D-66-7 M-4, 3, 15.0-20.0 (TL) M-5, 3, 13.5-17.5 (TL) D-66-10 K-3, 1, 19.5 K-4, 1, 17.0 (TL) D-66-12 L-3, 4, 15.5-22.0 (TL) L-5, 1, 19.5 M-3, 2, 15.5-20.5 (TL) D-66-14 M-l, 1, 19.5 (TL) TRIGLIDAE Prionotus carolinus (Linnaeus) northern searobin D-66-3 MWT-1, 1, 205 MWT-2, 17, 237-285 H-5, 27, NMD D-66-5 F-1 , 1, NMD G-3 , 1, 230 H-l , 8, 170-380 (TL) H-2 , 49, NMD H-4 , 3, NMD H-5 , 1, 187 (TL) J-2 , 4, NMD J-3 , 20, NMD J-4 , 15, NMD K-2 , 1, NMD L-3 , 3, NMD & 1, 111 (TL) D-66-- B-l 4, 130-230 (TL) B-2 1, 192 (TL) B-3. 2, 100-239 (TL) P-2. 1, 100 D-66-] F-1, 9, NMD F-2, 2, NMD G-2, 45, NMD K-3, 16, NMD L-l, 8, 47-146 (TL) D-66-1 2 A-l, 6, 71-95 (TL) L-2, 1, 136 (TL) D-66-1 4 J-4, 1, 86 P. eve lans (Linnaeus) stripe d searobin D-65-4 F-5, 1, 135 (TL) D-66-5 E-1, 30, NMD & 1, 311 (TL) F-1, 1, NMD H-2, 17, NMD H-3, 3, NMD J-2, 1, NMD J-3, 1, NMD D-66-10 E-1, 7, 255-340 (TL) E-2, 8, 203-291 54 P. evolans (Linnaeus ) (Cont. ) D-66-14 B-l, 2, 111-127 D-l, 1, 172 E-l, 2, 39-50 E-3, 11, 24.5-33.0 (TL) E-4, 1, 56.5 (TL) Unidentified D-66-7 P-2, 2, 17.5-18.0 P-3, 52, 19.0-44.0 (TL) D-66-12 D-3, 32, NMD F-3, 1, 225 (TL) F-4, 8, 185-260 G-3, 6, NMD G-4, 1, NMD H-2, 2, 222-227 (TL) J-2, 1, 284 J-4, 2, 254-282 (TL) K-3, 1, 161 (TL) D-66-14 E-3, 11, 24.5-33.0 (TL) COTTIDAE Myoxocepha lus octodecemspinosus (Mitchill) longhorn sculpin D-66-5 C-6, 1, 96 D-66-14 A-l, 2, 254-260 (TL) D-l, 1, 301 CYCLOPTERIDAE Liparis atlanticus (Jordan & Everraann) seasnail D-66-12 A-l, 1, 33 (TL) URANOSCOPIDAE Astroscopus guttatus Abbott northern stargazer D-66-10 H-l, 1, 11.5 (TL) ZOARCIDAE Macrozoarces americanus (Bloch & Schneider) ocean pout D-66-12 E-5, 1, 170 (TL) OPHIDIIDAE Ophid ion sp. cusk eel D-66- 10 K-3 , 14, 74-109 (TL) Unidentified D-66- 12 L-3 , 1, 15.5 (TL) STROMATEIDAE Cubiceps sp. D-66- 12 L-4 , 1, 34.5 (TL) Pepri lus paru (Linnaeus) north srn harvestfish D-66- 10 L-l , 1, 79 D-66- 14 J-l , 1, 72 Poronotus triacanthus (Peck) butterf ish D-65-' '4 C-7 , 1, 63 E-8 , 1, NMD F-3 , 53, 72-187 F-5 , 8, 107-154 (TL) F-6 , 5, 97-163 G-3 , 6, 81-99 G-4 , 5, 108-144 H-6 , 1, 129 J-5 , 4, 68-80 J-6 , 1, 62 K-3 , 16, 76-139 K-5 , 1, 77 D-66-. E-l , 70 lbs., 171-196 E-5 2, 159-184 F-l 29, NMD F-2. 138, NMD F-4. 1, 106 F-6, 1, NMD H-l, 185, NMD H-2, 130, 98-150 H-3, 2, NMD J-l, 2, NMD J-2, 54, NMD K-l, 64, 54-132 L-l, 12, 83-106 L-2, 2, 14-22 M-l, 104, 42-123 N-3, 1, 16 55 Poronotus triacanthus (Peck) (Cont . ) Poronotus triacanthus (Peck) (Cont . ) D-66- 7 C-5 , 1, 49 D-66, 2, 19.5-54.5 (TL) J-5 , 5, 27.0-50.5 (TL) J-6 , 1, 144 K-4 , 118, 108-165 K-4 , 94, 13.0-56.0 K-5 , 15, 12.5 (TD-140 L-l , 108, 37.5 (TD-125 L-2 , 14, 98-123 L-3 , 1, 34 L-5 , 2, 18.0-24.5 (TL) M-2 , 1, 18.5 (TL) P-2 , 52, 82-115 P-3 , 1, 91 D-66- LO A-3 , 4, 155-174 B-5 , 1, 64 B-6 , 130, 16.5 (TD-129 B-7 9, 13.0 (TD-134 C-7 11, 12.0-36.5 (TL) C-8 5, 10.5-34.0 D-l ca.700, 84-122 D-3 4, 23-39 D-4 4, 21.5-60.0 D-5. 15, 14-23 D-7. 1, 46 E-l. 67, 18.5-71.0 (TL) E-2. 7, 39-68 (TL) E-3. 4, 55-66 (TL) E-4. 12, 14-35 F-l. 132, 34-70 F-2. 60, 27-152 G-l, 6, 46-123 G-2, 84, 17-155 G-3, 602, 12-62 G-4, 46, 16-124 G-5, 151, 15-41 (TL) G-6, 6, 14.5-39.0 H-l, 5, 15-29 H-2, 16, 13-25 H-3, 15, 22.5-34.0 (TL) H-4, 70, 15-32 (TL) H-5, 52, 11 (TD-135 H-6, 3, 17 (TD-131 H-7, 16, 15-41 J-l, 167, 84-156 J-3, 270, 14-105 J-4, 568, 14-99 J-5, 236, ca. 15-40 K-l, 2, 22-25 K-3, 2, 33-57 (TL) D-66- 10 (Cont.) K-4 , 1, 15.5 (TL) K-5 , 2, 18.5-19.0 K-6 , 13, 13.5-20.5 (TL) K-7 , 8, 17.0-52.5 (TL) & 2, L-l , 30, 68-161 L-2 , 9, 21 (TD-107 M-l , 1, 137 M-2 , 3, 103-137 D-66- 12 B-2 , 1, 103 B-3 , 1, 21 (TL) B-6 , 1, 17.5 (TL) C-l , 3, 53-72 C-2 , 6, 18 (TD-78 C-4 , 8, 15-57 C-5 , 2, 35-93 C-7 , 3, 29-74 C-8 , 1, 37.5 D-2 » 1, 126 D-3 , 3, 60-66 D-4 , 3, 55-68 D-5 , 10, 18.5-67.5 D-6 , 3, 45-151 D-8 , 33, 27-73 E-3 , 58, 88-159 E-4 , 3, 51-125 E-5 15, 19-70 (TL) E-6 6, 48-64 E-7 19, 22-57 E-8 1, 38.5 F-l 1, 130 F-2 19, 36-176 F-3 57 lbs., 91-186 F-4. 58, 20-62 F-5. 1, 63 F-6. 25, 19-61 F-7. 2, 22.5-47.0 G-l. 189, 108-151 G-2. 92, 63-190 G-3. 222, 56-110 G-4, 4, 24-90 H-l, 27, 76-127 H-4, 1, 49.5 H-6, 2, 19-39 H-7, 1, 30 J-l, 8, 50-70 J-2, 45, 72-105 J-3, 8, 73-113 J-5, 2, 25.5-41.5 J-6, 8, 36-47 J-7, 2, 29.5-33.5 NMD 56 Poronotus triacanthus (Peck) (Cont . ) D-66-] .2 (Cont.) K-3 33, 22-95 K-4 12, 26-48 K-5 127, 25-55 K-6 4, 23-37 K-7 2, 19.5-23.0 L-l 13, 20-108 L-2. 2, 29-55 L-3. 1, 21.5 (TL) D-66-] .4 A-l. 1, 80 A-3. 7, 86-109 B-l. 2, 89-92 B-3. 2, 83-100 B-4. 2, 111-121 C-2. 2, 94-95 C-3. 1, 24.5 (TL) C-4. 4, 37-117 C-5. 2, 96-98 D-1. 7, 50-187 D-2. 8, 58-204 D-3. 13, 73-192 D-4 4, 73-96 E-l. 2, 143-163 E-2. 10, 107-163 E-3 9, 114-167 E-4 3, 18 (TD-112 E-5 23, 24 (TD-61 E-6 3, 22-38 E-7 74, 25.5-54.0 F-l 95, 80-143 F-6 7, 20-88 F-7 , 7, 24-41 G-l 8, 101-169 G-2 , 7, 100-169 G-5 , 1, 43 G-6 , 1, 25.5 (TL) J-l , 79, 74-149 J-2 , 80, 66-122 J-4 , 3, 108-140 J-5 , 16, 32-95 J-6 , 11, 21-68 J-7 , 10, 21-43 K-4 , 9, 16 (TD-75 K-6 , 30, 22.0-58.5 K-7 , 60, 23-51 L-4 , 86, 20-79 L-5 , 8, 21-38 M-4 , 1, 29.5 M-5 , 1, 28.5 P-1 , 93, 80-163 P-2 , 365, 52-136 Psenes maculatus Lutken silver driftfish D-66-12 E-8, 1, 106 P. regulus Poey spotted driftfish D-66-7 M-4, 2, 14.5-18.5 (TL) D-66-12 N-2, 1, 26.5 (TL) N-3, 1, 18.0 D-66-14 M-4, 4, 55-76 M-5, 1, 63 SPHYRAENIDAE Sphyraena guachancho Cuvier guaguanche D-66-12 L-3, 1, 25 (TL) ATHERINIDAE Menidia menidia (Linneaus) Atlantic : silverside D-66-14 D-1, 1, 66 E-l, 51 , 47-87 J-4, 3, 80-89 P-1, 1, 85 B0THIDAE Ancylopsetta sp. D-66-12 L-3, 4, 12.0-15.5 (TL) L-4, 1, 13.0 (TL) N-3, 1, 26 (TL) D-66-14 L-l, 1, 15 (TL) M-l, 2, (mut.)-24.0 (TL) M-4, 1, 18 (TL) M-5, 2, 15.5-19.0 (TL) Bothus occellatus (Agassiz) eyed flounder D-66-7 M-4, 1, 19 (TL) D-66-10 G-5, 1, 20 (TL) 57 Bothus occellatus (Agassiz) (Cont ) D-66-12 B-3, 2, 23.0-24.5 (TL) B-4, 2, 20.0-22.5 (TL) B-6, 1, 21.5 (TL) K-6, 1, 17 (TL) L-3, 5, 13-23 (TL) L-4, 12, 14-22 (TL) M-3, 18, 16.0-24.5 (TL) N-2, 9, 15.5-23.5 (TL) N-3, 3, ca.22 (TL) D-66-14 L-2, 1, (mut.) M-l, 4, ca. 12-18 (TL) M-4, 2, 19.0-20.5 (TL) M-5, 7, 19-24 (TL) Bothus sp. D-66-12 M-3, 1, 23 (TL) Citharichthys sp. D-66-10 G-5, 1, (mut.) D-66-12 B-4, 8, 9.5-19.5 (TL) B-5, 2, 16.5-19.0 (TL) B-6, 1, 12.0 (TL) C-4, 7, 11.5-17.0 (TL) C-6, 2, (mut. -16.0 (TL) C-7, 5, ca.15 (TL) H-5, 1, 14 (TL) D-66-14 M-3, 2, 14.0-17.5 (TL) Etropus micros tomus (Gill) smallmouth flounder D-66-3 MWT-2, 3, 45-87 D-66-5 J-2, 7, NMD K-l, 1, 91 (TL) L-2, 1, 102 (TL) L-3, 4, 99-134 Etropus microstomus (Gill) (Cont . ) I) -66-10 F-2, 44 , 83 -123 G-2, 1, 82 (TL) K-l, 1, 76 K-3, ca .250 , ca. 20- -90 L-1, 13 , 41 -83 D -66-12 F-4, 1, 94 J-3, 1, 97 M-3, 1, 81 Etropus sp . D-66-10 " L-2, 1, 32.5 (TL) D-66-12 L-3, 5, .0-15.0 (TL) Paralichthys dentatus (Linnaeus) summer flounder D-66-3 MWT-2, 1, 554 (TL) D-66-10 F-1, 2, 306-366 G-2, 1, 385 (TL) K-3, 4, 290-449 (TL) L-1, 1, 264 (TL) D-66-12 H-2, 1, 313 Paralichthys oblongus (Mitchill) fours pot ilounder D-66-5 H-5, 1, 297 (TL) J-4, 1, 276 (TL) K-5, 1, 230 (TL) L-3, 2, 217-222 D-66-7 K-4, 1, 189 (TL) D-66-10 F-1, 1, 110 K-3, 4, 235-304 (TL) K-3, ca .100, 22-104 L-1, 1, 145 58 Paralichthys oblongus (Mitchill) (Cont .) D-66-I2 166 (TL) 250-295 (TL) D-3, 1, E-5, 2, J-3, 1, 71 J-6, 4, 210-322 J-6, 1, 28.5 (TL) K-3, 1, 120 (TL) D-66-14 E-3, 1, 120 Scophthalmus aquosus (Mitchill) windowpane D-66-3 MWT-2, 6, 71-293 D-66-5 H-2 J-3 J-4 L-l L-3 D-66- B-l D-66-10 F-l F-2 G-2 L-l D-66- D-3 E-4 E-5 G-3 J-2 D-66- 1, 257 (TL) 2, NMD 276 (TL) 132 (TL) 236 1, 1, 1, 5, 160-286 (TL) D-l D-2 D-3 F-2 Unidentified 7, 120-154 1, 115 1, 181 (TL) 1, 186 12 , 227-300 1, 248 1, 248 (TL) 1, 275 1, 205 2, 16.5-19.0 (TL) 5, 12.5-40.5 (TL) 1, (mut . ) 1, 268 D-66-12 H-6, 1, (mut.) PLEURONECTIDAE Glyptocephalus cynoglossus (Linnaeus) witch flounder D-66-7 D-8, 1, 33 (TL) K-5, 5, 43.5-52.5 (TL) L-5, 1, 44.5 (TL) Glyptocephalus cynog] ossus (Linnaeus) (Cont.) D-66-10 D-7, 25, 29.0-59.5 (TL) D-8, 77, 23.0-50.5 (TL) G-5, 6, 25-44 (TL) G-6, 4, 35-42 (TL) H-5, 7, (mut.)-38 (TL) H-6, 1, 51 (TL) J-5, 1, ca.25 (TL) J-6, 54, 24.5-52.0 (TL) K-5, 4, (mut.) -37. S 1 (TL) K-6, 13, 27.5-49.5 (TL) D-66-12 B-5, 7, 29-41 (TL) B-6, 4, 43.0-53.5 (TL) C-2, 1, 44.5 (TL) C-6, 1, 46.5 (TL) C-7, 1, ca.15 (TL) F-6, 1, 47.0 (TL) H-4, 1, (mut.) H-5, 1, (mut.) H-6, 10, 29.0-44.5 (TL) J-6,yl, 38.0 (TL) Limanda ferruginea (Storer) yellowtail flounder D-66-7 C-2, 20, 13.5-18.5 (TL) C-3, 68, 13.0-19.5 (TL) C-4, 10, 14.0-19.5 (TL) C-5, 15, 15.5-22.5 (TL) C-6, 38, 12.5-22.5 (TL) D-6, 80, 13.5-21.5 (TL) D-8, 2, ca.14 (TL) K-5, 1, 17.5 (TL) D-66-10 B-7, 1, 22 (TL) Pseudopleuronectes americanus (Walbaum) winter flounder D-66-5 H-5, 1, 233 (TL) J-2, 17, 160-239 J-3, 2, NMD J-4, 1, 173 (TL) D-66-7 B-l, 1, 299 (TL) D-66-10 C-2, 12, 172-261 (TL) D-66-12 D-3, 7, 246-300 (TL) 59 SOLEIDAE Trinectes maculatus (Bloch 6c Schneider) hogchoker D-66-10 F-l, 1, 169 CYNOGLOSSIDAE Symphurus plagiusa (Linnaeus) blackcheek tonguefish D-66-10 L-l, 6, 96-181 (TL) MONACANTHIDAE Alutera schoepfi (Walbaum) orange filefish D-66-5 M-l, 17, 411-428 D-66-7 N-2, 1, 77 (TL) D-66-10 J-l, 1, ca.350 Amanses pul lus (Ranzani) orangespotted filefish D-66-7 P-4, 1, 81 Monacanthus ciliatus (Mitchill) fringed filefish D-66-5 M-4, 1, 22 (TL) D-66-7 N-3, 1, 17.5 (TL) P-2, 2, 17.0-19.0 (TL) Stephanolepis hispidus (Linnaeus) planehead filefish D-65-4 N-5, 3, 145-166 D-66-5 N-l, 1, 136 & 4, NMD D-66-7 P-2, 1, 70 (TL) P-3, 1, 26 (TL) D-66-10 B-6, 1, 53 (TL) K-4, 1, 17.0 (TL) K-5, 2, 27.0-27.5 (TL) L-l, 3, 76-87 L-2, 1, 19 (TL) Stephanolepis hispidus (Linnaeus ) (Cont.) D-66-12 D-5, 1, 122 D-6, 2, 86- 129 L-3, 1, 13 (TL) M-3, 1, 16 (TL) N-2, 1, 15. 5 (TL) D-66-14 P-2, 1, 29.5 (TL) TETRAODONTIDAE Sphaeroides maculatus (Bloch 6c Schneider) northern puffer D-66-5 F-l 1, NMD H-l 4, 110 -160 (TL) K-l 2, 93-' )6 (TL) M-l 2, NMD N-3 1, NMD D-66-1 LO 30 A-5 1, (TL) F-l v51 , 69 -88 (TL) K-l 3, 76-1 38 L-l 25 , 29 -87 (TL) D-66-] .2 37 B-3 1, (TL) F-4. 1, 102 (TL) G-3 8 Lbs. , 85-97 (TL) J-2, 81 , 83 -125 J-4. 1, ca . 15 (TL) L-l. 1, 154 (TL) D-66-] .4 207 E-2. 1, F-3. 1, 73 G-2. 1, 58 J-l. 82 , 81 -236 M-l. 10 , ca .50-85 S. tes tudineus ; (Linnaeus) checks sred puffer D-66-1 4 M-5, 1, 19 1 TL) L0PHI1 DAE Lophit is americanus Valenciennes goosei ish D-66-! C-6, 1, NMD H-l, 1, 1030 (TL) 60 L ophius americanus Valenciennes (Cont . ) Unidentified D-66-10 D-5, 1, (mut.) D-66- 7 C-2 , 13, ca.4.0 (TL) D-6 » 1- 59.5 (TL) H-5 » 3. 33.0-38.5 (TL) K-4 , 5. 30.5-45.0 (TL) K-5 » 3. 26.0-39.0 (TL) D-66- LO B-6 , 1: ca.24 (TL) C-3 1, 85 (TL) D-4 , I- 70 (TL) D-7 . 6, 75-102 (TL) D-8 4, 1-9-22 (TL) G-3 1, 27 (TL) G-6 ]., 39 (TL) H-4 4, 18-38 H-5 2, 12.5-21.0 (TL) J-6 1. 24 (TL) K-3 2. 136-140 (TL) K-4 1, 35.5 (TL) K-5 5, 22.5-25.5 (TL) K-6 3, 19.5-21.0 (TL) D-66-i L2 B-3 1, 28 (TL) B-4 3, 21.5-47.0 (TL) B-5 i: ', 16-56 (TL) B-6 it ,, 17-44 (TL) C-2. 4, 32-47 (TL) C-4 1, 28.5 (TL) C-5. 1, 21.5 (TL) C-6. 1, 20.5 (TL) C-7. 5, 19.5-74.0 (TL) C-8. 1, 32.5 (TL) D-6. 1, 35.5 (TL) E-5, 1, 303 (TL) E-7. 1, 46.5 (TL) D-66-] .4 C-3. 1, 845 (TL) E-5. 2, 45-66 E-6. 4, 78-103 E-7, 4, 73-98 L-3. 1, 50 (TL) L-4. 1, 78 (TL) OGCOCI imp LIDAE 0gCOC£ ;pha lus sp. batfis ,h D-66-] K-4, 1, 17.5 (TL) 61 Appendix Figures Al - A8:--R. V. Dolphin survey, 1965-66. Surface temperatures Lines of equal temperature are drawn at 1.0°C. intervals. 62 CORRECTION for STUDIES OF ESTUARINE DEPENDENCE OF ATLANTIC COASTAL FISHES Technical Paper 28 of the Bureau of Sport Fisheries and Wildlife U. S. Department of the Interior August 1969 Legends for a number of the appendix charts and graphs were omitted in this paper. On the re- verse of this sheet is an amended page 62. Please insert this correction sheet in your copy. APPENDIX Figures A 1 - A8:--R. V. Dolphin survey, 1965-66: Surface temperatures . Lines of equal temperature are drawn at 1 .0° C. intervals. Figures Bl - B8:--R. V. Dolphin survey, 1965-66: Bottom temperatures. Lines of equal temperature are drawn at 1.0° C . intervals . Figures CI - C25:--R. V. Dolphin survey, 1965-66: Vertical temperature profiles for Cruises D-65-4 through D-66-14 . For each survey transect, points of equal temperature are connected at 1 .0° C. intervals; except for periods of low gradient when they are plotted at 0.5° C. intervals with a solid line for the whole degree values, and a dashed line for the half -degree values. Figures Dl - D8:--R. V. Dolphin survey, 1965-66: Surface salinities. Data are plotted in parts per thousand (o/oo) salinity. Lines of equal salinity are drawn at intervals of 0.5 o/oo; solid lines for values in whole parts per thousand, dashed lines for values in half parts per thousand. Figures El - E25:--R. V. Dolphin survey, 1965-66: Vertical salinity profiles. Data are plotted in parts per thousand (o/oo) of salinity. For each survey transect, points of equal salinity are connected at 0.5 o/oo intervals to the maximum sampling depth of 40 meters; solid lines for values in whole parts per thousand and dashed lines for values in half parts per thousand. Figures Fl - F8:--R. V. Dolphin survey, 1965-66: Zooplankton volumes . Plankton densities are shown at four volume intervals, in milliliters dis- placement volume per Gulf V tow (excluding ichthyoplankton and seston items > 3 milliliters) for both shallow (0.15 m.) and deep (18-33 m.) tows. When materials in the sample prevented measurement by blocking filtration, the predominate material is plotted at the station as follows: D, dino- flagellates; T, thaliaceans; and S, sediments. 62 SURFACE ISOTHERMS <«C> CRUISE DiS4 DEC 3 - 15 . 1965 4^ »•• >•• Figure Al Figure A2 63 SURFACE ISOTHERMS («C) CRUISE D (6 3 APR 6 - 22 . \Ht CRUISE 66 12 SEP 28 - OCT 20, 1966 r~~~ AUG 8 & 9 1966 80 130 I 130 1 s 20 [ \ 13 5 ^^-- B ""■ """-^^-^■- — -- — — — — — — '■■ *^*<£° "" . TRANSECT E ^*** m *>^^ ti ^ ^ 05-- Mi CRUISE 066 14 NOV 9 4 10. 1966 ^V 10 0*^* too Figure CIO 25 30 35 40 4 5 j < f r , l_ — L__^i ^i 1 i 50 55 80 J— J- i — ^-r^ — r^ — tT 1 i " ' -i TRANSECT F CRUISE D 66 1 FES 5 4 6 1966 TRANSECT F CRUISE D 66 5 MAY 18 t 19, 1966 Figure Cll 10 15 20 25 30 35 40 _L I . I . I , I ^_J , L_ 50 35 flO J J_ ■f r i r \\ >18 -V8 16 — 170 \ 1B0 ^ — ' 1 / 10 / 'eo ^S53=s^ " ^**^****1 90 70 / TRANSECT f ^*""~ , l II CRUISE 3 66 12 OCT. 4 & S. 1966 82 Figure C12 10 15 20 25 30 35 4C I I I I I , I H I __L -i L — r i — — r >65 7 65 /' / ! 1 1 1 \ \ 20 40 " N,,,^^ <65 65 1 1 1 1 65 >65 1 \ 60 55 \ \ \ \ \ 60 - TRANSECT G 60 " CRUISE APR 14 Dee 3 & 15 . 1966 Figure C13 83 I, I, I , I 15 20 25 30 35 40 x- r _j_ J __L — V. ^7- ^ — 24 0- 80 60 7 0. 70 TRANSECT G 60 CRUISE D 66 10 - AUG 21, 1966 84 Figure C14 5 10 15 20 25 30 35 *0 45 50 &rh h; h ■ i ■ i ' i ' i ' i ' i ' \ 1 1 J 9 1 10.0 1 ^/\ 9 5 1 10 5 \ >11 no 1 "0 * 10 - - - ^^ TRANSECT H y >iio CRUISE D 654 - DEC U. 1965 ' / > ^^8 5 8 ' 5 8 / 1 / _- 1 75 ^ 1 / 70 / / / / / 65 6 1 1 1 55 i ■; 1 1 BO - TRANSECT H 1 1 1 1 1 D(l CRUISE D 66 3 APR 15, 1966 1 Figure C15 85 _L L 1 ^ T 20 25 30 35 *0 45 1 I ' I ' l ' l . ' 86 Figure C16 5 10 15 20 25 30 35 40 ^ h h ' .I ' i ' i ' i ' 45 SO 55 00 ^_i r-x-^j ^ "*"\ i. ^ 30 4 50 , / •^ 70 • - ^**^V-^'~ - V-iiO TRANSECT J Y 90 CRUISE 66 1 FEB 7. 1966 V' / "To / ' BO 65 ; / - / / eo ,' ^75' . ^70 65' • / - TRANSECT J CRUISE 66 3 APR 16(J-3-J-7) APR 19(J-1 - J - 2 ) , 1966 ^ — ^EEr 14 .^- " QO / 80~" ZTT / / -?o- - / 1 ... X; _ TRANSECT J CRUISE 66 5 MAY 20 t 21. 1966 Figure C17 87 -i, L, 25 30 35 40 4 5 50 55 n ^ I , I , , 1 r— 1 i— — r T 1 H- ^^^^^^^s — 170 = — ■ 'to " J ^-— " ,;0 ' ^6 TRANSECT J CRUISE D 66 7 JUN 26 & 27, 1966 100 -' 50 >-50 15 - \i30^" \ '' - TRANSECT J Vi2o CRUISE D 66 14 — NOV lZCJ-l-j-3), NOV L4(J-4- -7), 1966 Figure C18 _L L 20 25 30 35 40 1 1 "1 "1 I . I , l__ L_, I — L i — — i — — r — — r — / / ^^^. io 5*" f / no i ■ — 120 — " 11 5 1 / 1 1 11 5 1 110 1 1 10 5 i 1 1 ■ — 1 1 1 \ \ \ TRANSECT K CRUISE 65 4 DEC 12 & 13. 1965 " ""* — --- _B5 ' S^^^-^^ /^ — -** / f /' ' s / ' ~- / 65 ^^v / I X / ; - TRANSECT K - CRUISE D-66-3 APR 19. 1966 ■*■ 7 v^ — — "^ ' 2 ° ^/ — ~ BO / f *" ^70 \'' / - V 80 TRANSECT K CRUISE M-9 - MAY 21 1 22 . 1966 Figure C19 89 3 10 13 20 25 30 33 40 43 30 I""" I, '. ' . ' . 1—, 1 , 1 -, 1 ,— I r-L 1 t h -i ^n — ~^-r - , '8 — <" ^"^ r " L J*^- no 14 — -13 10 -~^Z 40 -BO" — " 80 TRANSECT K X^eo* SO - CRUISE DM7 JUN 25 ft 26. 19ft6 Loo" inn 1 '0 0""* 90 Figure C20 - - - / / • c 14 C*" 14 3 - <14 - \ 14 - TRANSECT K \— -trr= v~ — CRUISE 0-66 14 lUO^ NOV 17 ft It , IMS 1 !,J _L L 20 25 30 1 I ' i 20 25 30 j t S h -i — 'i ■ . i L-" 30 \ \ \ \ \ IIH 50 Mill \ \ \ \ uo ^^v i 40 \ \ \ 1 - ^\T TRANSECT L CRUISE 66 1 FEB 8. 1966 Figure C21 91 ^TT- 19 20 ""•■ i j_ i i t n - _L L 1 ^T Figure C22 92 I L *i r i . i 25 30 35 i "~r ^T-^ n — —^ L _J_ !_, L 25 30 i "— r ^-r-^ > \ \ 24 V ^^^_-~— 23 ^220 - TRANSECT N CRUISE D 66 7 XlQO JUN 24, 1966 ^ / 270 \ ..26 0^ 27 \ 28 ' / 24 o\ x; - — 250 ^\>^ - V^ 21 TRANSECT N _ CRUISE 66 10 - AUG 25 * 26. 1966 l' 50 -. \ 200 20 to ^^^^^^^-■24 — _ Ml - TRANSECT N 210 80 CRUISE 066 12 SEP 29, 1966 \ 'B0„ or Figure C23 J, — h — 4. 2$ 30 40 -15 1 — — 1 — — 1 — — r X 7 o 8.0 \ \ X X > X. -n\\ \xs "X >v ^s. x\\ ,8 ° \ 19 \ 20 \ - - TRANSECT P I \ CRUISE 66 1 FEB 9. 1966 94 Figure C24 _L , L 25 JO 1 L ^^ "i — r 220 TRAN5ECT P CRUISE D 66 12 OCT 20, 1966 170 Z___i L TRANSECT P CRUISE 66 14 NOV 15, 1966 Figure C25 95 SURFACE SALINITY (ft.) CRUISE D 65 « DEC 3 - 19. IMS Figure Dl Figure D2 96 Figure D3 Figure D4 97 SURFACE SALINITY (ft.) CRUISE 66 7 JUN. 17 - it . 1986 SURFACE SALINITY ift.l CRUISE 96 10 AUG 5-26 1966 Figure D5 Figure D6 98 Figure D7 Figure D8 99 10 '5 20 25 30 35 , h h h; — ■ i ' i [ i 50 55 J —I , I - -I V 32 4 NO DATA (A-3-A-7) TRANSECT A CRUISE 66 1 JAN 26. 1966 / / ' 1 -33.0 ■ 20 V 32.5 ^--' ^^ = - = ^ S. N " N vN ^^^ -2«S M0) \ * | > 60 - TRANSECT A 80 - CRUISE 66 3 APR 6 6 7. 1966 <32.S f - 330 f ~1?5 ^ - TRANSECT A CRUISE 6* 9 MAT 12 4 13 1966 Figure El 100 _L L 20 25 30 35 40 '■■ ' i ' i ' — r 1 - 50 55 t- r 1 - — -f - t 32.0 „ -- ^ / \~~~----^_ j.o ^ - -" " X. s 33.0 -335- ____ — p - — ,•'' >32.S ^ <325 32 5 "*■ TRANSECT A CRUISE 66 10 AUG 5. 1966 <315 s-"" ~ 3 ' 5 - — — - >315 TRANSECT A ~ - CRUISE 0-66 12 OCT 15. 1966 Figure E2 101 p. 1 . I Of" 15 20 25 30 I , ■ ■ I ., L_ L- 50 5i -r^ r" r" r Figure E3 102 I k>lom«l*ri T 25 30 35 iO 45 50 55 60 1 i ' i ' ! ' — H r^— -H H Figure E4 103 _L L 20 25 30 35 4( ' . ' , I . ' . I i — — i — — i — r j ^ 50 55 60 65 7 75 I I J_ -r r ZT\ I T M==^' 1 1 \ 30 " -n \ \ \ / - 300 V 1 -N < ^ >300 \ 300 - . \ ( 28.0 , -\ ( - vN__ _-/ _J ) 30 / - TRANSECT C - CRUISE 65 4 DEC 3 & 4 1965 Figure E5 104 '5 20 25 30 35 40 55 00 05 -i — h — 4-^ J rL- -r- J T- 1 I ' ' I "T 70 75 L H—v L JS 5 310 jf J»V5 / / \ C 320 TRANSECT C - CRUISE 066 10 - AUG 6 4 7. 1966 31.0 ( 31.0 31.5 "*\ t \ \ ^ 32 - TRANSECT C - CRUISE D6612 - OCT 13 & 14 . 1966 <=== ^o 33 r~ 330 33.5 TRANSECT D CRUISE 0-66 1* - OEC 1 t 2 . 1966 Figure E8 107 15 20 25 30 35 40 -h h ' | ' i ' 45 50 55 »0 Of "0 i — H — _i — h j — - y \- TRANSECT E CRUISE 65 4 DEC 6 L 7. 1965 TRANSECT E CRUISE 66 FEB 5 , 1966 Figure E9 108 10 15 20 25 30 35 _L l_ L^ 1_. 1 ,. ■ I ■ i — — r 50 55 80 65 7 ,0 1 , 1 T — 'i i ' r 31.0 -««^ i - > 31.0 _^y \ 20 ■^^ J 3J.5 32.0^ 41 / -32.0 00 TRANSECT E BO on CRUISE D 66 10 AUG 8 A 9. 1966 o s w < 31.0 31.0 32 K __ 40 CO 325 \ \ / _ TRANSECT E BO (VI CRUISE 66 12 OCT 5CE-1- E-3); OCT 11 & 12(E-4~ E-8) 1966 Figure E10 109 30 35 J , L 50 55 i — r^ — 7— — — r k 1 \28.0 1 1 25.0 25.0 1 300 -*-^ -v 315 _ ^ -ii^ - 11110,^ ^Z^~~ , '"' "' - " - TRANSECT f CRUISE D654 DEC 9 & 10. 1969 \DATA — _~-^ _^S s _\ ■ "1.32.0 _,-" 33.0 """" i 34.5 NO DATA 34J)-*""*" - - TRANSECT F CRUISE D 66 1 FE8 5 & 6, 1966 ^^^^ 300 \ ^V -310 — — ^Z*-~"~*"* f 30 ; -^^J^-^c^zza. - TRANSECT F CRUISE 66 5 MAV 11 t 19, 1966 — Figure Ell 110 20 7b 30 L 1, , I , U, 1 , 1,1,1 r-l t-L 50 55 m 1 1 — r r — i ' " i " — r \ 33.0 325 / 33.6 ~"*3j.S ""^-^ M0 \ «'" ^^^ 35.0 TRANSECT F CRUISE D 66 14 - NOV 10 & 11 1966 Figure E12 111 L ', ' TO 25 30 35 -H — ' i ■ i l i . i | 3O.0 X / 1 31.0 I 1 1 315 1 kJ 315 „-'''^-- 330 TRANSECT G CRUISE 65 4 DEC 10 & 11. 1969 ^ / i \ \ 32.5 / / X N TO - 1 \ A 1 TRANSECT G 60 CRUISE 66 3 APR |4 4 19, 1966 Figure E13 112 ^ — h — h — L 25 30 35 40 45 J , I , L "i — — i i — r \ / 310 3'.0 3, 5^ 32.0^ / 32.0 / ) TRANSECT G CRUISE 66 12 OCT 3 ft 4 , 1966 ■ l 32.5' f 33.5 33.0 „ — " 34.0 / f / 1 1 1 34.5 / 1 - TRANSECT G CRUISE D66 1* NOV lift 12, 1966 Figure E14 113 -L- L 25 30 35 40 l ' l ' J. . 32.0""**^ 32.5 33 35 «0 l ^ — ~i ^T J — r 1 - Figure E20 119 5 10 15 20 25 30 i, L I . I L_, L_ n t- i — r e TO 25 30 i. i. U I , ■ ■ ' ^_^ 31.5 . 33 ^ 34.0 jj^> ^-^ \ ^^w! 32 5s _ 320 ^=^T r:: >\ 315 — TRANSECT L CRUISF. 66 10 AUG 26 1966 ~ " 30.0 - ^ s ^=^?frm ^^^32 0" ~ 33.0_ *--»^ CJ^^KO 32 5 — ■ - TRANSECT L CRUISE 66 12 - SEP 30 , 1966 Figure E21 20 i T J r— ^ — 4- I ^ ^ III/ I \ 310 ] j / jS 36 5 / \ \ 1 '«^^ 30 - Vjfl.5 TRANSECT M CRUISE D 66 7 - JUN 23 . 1966 i i V 32.0 1 / / / 33.0 ! i \ \ '34.0 \ w 1 1 /' /' \ 1 ' \ I 34 ' 5 40 60 TRANSECT M 80 inn CRUISE D 66 1 FE8 8. 1966 o»" N , ( // / ( 34 33.0J J / 1 \<3° 345 ^ \ 350 - \ 50 ^ TRANSECT M CRUISE D-66-10 AUG 25, 1966 1 ^-30.0-*" ^y wjo*^0&& ^S<^ 34 0" / / / ^^^ / / 350 / ^V / 35 5 ' \ 1 TRANSECT M 1 1 CRUISE 66 3 1 APR 20 . 1966 1 Figure E22 U <34 ° y -^^ s . 34.0 / ' 350 / / \^ 35.5 / / t 1 TRANSECT M CRUISE &66 1* - NOV 16 . 1966 121 20 25 ^ ^-p -L L 25 30 T ^ ^ — T \ ( 350 > - V «5 350 " 1 *350 35 - . 35 TRANSECT N CRUISE t>«« 12 SEP 29 1966 \ l 1 - * _^k^ 3 J__ x i__y \^ 34.0'"'""'' 355 - TRANSECT N \ CRUISE DM9 \ MAY 24 1966 \ II / 1 I -^._ 34 1 36 \ 36 1 \ \ 1 / 376 \ \ I HO \ <^ TRANSECT N CRUISE DM 14 NOV 16 1966 122 Figure E23 _L L 20 25 t ^r 1— — r - V 1 1 36 _!_ 30 5 / J 370 / _____ NO DATA 37 5 "375,^ TRANSECT P CRUISE 65 4 DEC 15 1965 \ 33 5 \ 34 / \ / 35.5 ^^». 3S0 TRANSECT P CRUISE D 66 1 FEB. 9, 1966 33 " / ^-33.5-~"'^/_^' - 35.5^ ) - TRANSECT P 10 - CRUISE 66 3 ■ APR 21 1966 Figure E24 123 '0 13 20 25 30 35 1 , I , I , I ,1.1 t — r - . _-33 5-—"' -» ^. 34 / ^S^ 35 C J5 5 30.0 K 40 » TRANSECT P M - CRUISE DW 7 JUN 24 1 25 1966 10(1 TRANSECT P CRUISE D 66 10 AUG 26 1966 TRANSECT P CRUISE D66 12 OCT 20, 1966 TRANSECT P CRUISE 066 14 NOV 15 1966 35 Figure E25 124 PLANKTON VOLUME (ml/low) CRUISE D 65 4 DEC 3-15. 1965 SHALLOW TOWS (0-15m) Figure Fl 125 126 Figure F2 >200 B 105-200 IIIII 55- 100 ::::::: < 55 1 1 Figure F3 127 128 Figure F4 Figure F5 129 Figure 130 Figure F7 131 Pl»NKTON VOLUME (ml/lo.) CRUISE 66 1* NOV 9- DEC «. 1966 Cj'Sft SHUUOW I0WS (0-lSm) SV>J ml 132 Figure F8 4U.S. GOVERNMENT PRINTING OFFICE: 1969 O - 363-399 As the Nation's principal conservation agency, the Depart- ment of the Interior has basic responsibilities for water, fish, wildlife, mineral, land, park, and recreational re- sources. Indian and Territorial affairs are other major concerns of America's "Department of Natural Resources." The Department works to assure the wisest choice in managing all our resources so each will make its full contribution to a better United States — now and in the future. For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, IXC. 2#402 - Price $1.25 UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE BUREAU OF SPORT FISHERIES AND WILDLIFE WASHINGTON. D C. 20240 POSTAGE AND FEES PAIO U.S. DEPARTMENT OF THE INTERIOR