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APPENDIXES This page intentionally left blank APPENDIX 1 Collecting Zooplankton Collecting Using Nets Although many methods are used to collect zooplankton, most nearshore zooplankton in our area are collected using nets (Fig. 7). Of the many design features, the two that most affect your catch are the size of the mesh and the diameter of the frame. Most plankton nets are conical with diameters that vary according to the mesh of the net. Mouths of small mesh nets are often 30 cm, medium mesh nets are often 50 cm, and large mesh nets are 100 cm or larger. Conical nets are usually mounted on metal rings, and three bridle lines are often used to connect the ring to a tow rope. Net mouth-to-length ratios can range from 1:3 to 1:6, with longer nets being less prone to clogging with small particles. For general Table A1.1 Common mesh sizes used in plankton nets and their application Mesh opening (µm) Silk size (#) Comments 10 200 Retains larger “net” phytoplankton and some of the smaller zoo- plankton. Because of its high resistance, it must be towed very slowly and can quickly clog with phytoplankton and detritus in “dirty” water. Poor for zooplankton in general. 64 (73) 21 A relatively uncommon size but good for copepod larval stages and rotifers. Best in waters relatively free of detritus to avoid excessive clogging. 153 10 The most commonly used estuarine zooplankton net mesh. Catches most midsized zooplankton (e.g., adult copepods, crab zoeae) and some larger and slower taxa. 365 2 Used for larger zooplankton, such as chaetognaths, crab megalopae, hydromedusae, and shrimp larvae. Not recommended for copepods and smaller mesozooplankton . Accessed July 19, 2011. Calder, D. R. 2009. Cubozoan and scyphozoan jellyfishes of the Carolinian biogeographic province, southeastern, USA. Royal Ontario Museum Contributions in Marine Science 3:1–58. Costello, J. H., Mathieu, H. W. 1995. Seasonal abundance of medusae in Eel Pond, Massachusetts, USA during 1990–1991. Journal of Plankton Research 17:199–204. Kraeuter, J. N., Setzler, E. M. 1975. The seasonal cycle of Scyphozoa and Cubozoa in Georgia estuaries . Bulletin of Marine Science 25:66–74. Phillips, P. J., Burke, W. D. 1970. The occurrence of sea wasps (Cubomedusae) in Mississippi Sound and the northern Gulf of Mexico. Bulletin of Marine Science 20:853–859. Cirripedes (Barnacles) Lang, W. H., Ackenhusen-Johns, A. 1981. Seasonal species composition of barnacle larvae (Cirripedia : Thoracica) in Rhode Island waters, 1977–1978. Journal of Plankton Research 3:567–575. Cladocera (Water Fleas) Bosch, H. F., Taylor, W. R. 1968. Marine cladocerans in the Chesapeake Bay Estuary. Crustaceana 15:161–164. Egloff, D. A., Fofonoff, P. W., Onbé, T. 1997. Reproductive biology of marine cladocerans. Advances in Marine Biology 31:79–167. (Contains information on salinity distributions.) 376 APPENDIX 5 Lippson, A. J., Haire, M. S., Holland, A. F., et al. 1979. Environmental Atlas of the Potomac Estuary . Martin Marietta Corporation for Maryland Power Plant Siting Program, Annapolis, MD. 279 pp. Copepods There are relatively few recent published surveys, so the data in the sources below may omit recent range extensions or name changes. Bowman, T. E. 1971. The distribution of calanoid copepods off the southeastern U.S. between Cape Hatteras and southern Florida. Smithsonian Contributions to Zoology 96:1–58. Buskey, E. J. 1993. Annual cycle of micro and mesozooplankton abundance and biomass in a subtropical estuary. Journal of Plankton Research 15:907–924. (Nueces Estuary, TX. A highsalinity coastal lagoon.) Cronin, L. E., Daiber, J. C., Hulbert, E. M. 1962. Quantitative seasonal aspects of zooplankton in the Delaware River estuary. Chesapeake Science 3:63–93. Deevey, G. B. 1960. The zooplankton of the surface waters of the Delaware Bay region. Bulletin of the Bingham Oceanographic Collection 17:5–53. Fulton, R. S., III. 1984. Distribution and community structure of estuarine copepods. Estuaries 7:38– 50. (Seasonal distribution near Beaufort, NC.) Gillespie, M. C. 1971. Analysis and treatment of zooplankton of estuarine waters of Louisiana. In: Cooperative Gulf of Mexico Estuarine Inventory and Study, Louisiana. Phase 4, Biology. Louisiana Wildlife and Fisheries Commission, New Orleans, 108–175. Grice, G. D. 1960. Calanoid and cyclopoid copepods from the Florida Gulf Coast and Florida Keys in 1954 and 1955. Bulletin of Marine Science of the Gulf and Caribbean 10:217–226. (Four stations north of Tampa. Transects begin in inlets or estuaries, then continue offshore.) Hawes, S. R., Perry, H. M. 1978. Effects of 1973 floodwaters on plankton populations in Louisiana and Mississippi...

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Additional Information

ISBN
9781421407463
Related ISBN
9781421406183
MARC Record
OCLC
814454605
Pages
432
Launched on MUSE
2012-11-16
Language
English
Open Access
No
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