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HOW TO USE THIS BOOK TO IDENTIFY ZOOPLANKTON Quick Picks is the first step in identifying unfamiliar organisms. This section divides the taxa into distinctive groups in which members share similar size, shape, and general appearance . Within each group, find the best match for your specimen, then turn to the proper taxonomic section for identification. A description of the key anatomical features needed for identification can be found at the end of the general introduction to the biology and ecology of most taxonomic groups, labeled Identification Hints. New users will find it easier to read the introductory information and identification hints before attempting to match the specimen with the labeled illustrations . Many anatomical terms are defined in the section that precedes the illustrations of taxa and are not in the Glossary. We strongly encourage users to start the identification process with “Quick Picks” and proceed to the “Identification Hints” for each group before attempting identification. In the long run, this approach will save frustration and faulty identifications. Use the line drawings and bulleted identification notes to identify individual taxa. Distinctive features that distinguish each taxon from similar forms are listed and identified in the drawings. Check the notes under Occurrence once you have a tentative identification to be sure that the information on range, habitat, and salinity preference matches your collection site. If not, recheck your identification. Because this book does not cover all species or developmental stages that could occur in your area, it is possible that you will arrive at an identification that is not correct. Absolute identifications can only be provided by trained experts in taxonomy, but there is a high probability that when using this book you will correctly identify the specimen or determine the name of a taxon that is closely related to the specimen in hand. Regional variability means that some specimens will not look exactly like the drawings , although the bulleted features should be reliable over our entire range unless noted otherwise. 46 IDENTIFICATION AND BIOLOGY OF COMMON ZOOPLANKTON TERMINOLOGY Throughout the identification section, terms are used as follows: Geographic Terms Our geographic range. Nearshore ocean and estuarine waters from Cape Cod, Massachusetts , south to Cape Canaveral, Florida, along the Atlantic Coast and from Fort Myers, Florida, through Texas, along the Gulf Coast. Estuarine. From the upper extent of tidal influence to the inlet or mouth of estuaries. Nearshore or coastal ocean. From the shore (beach) out to 10 km. Coastal. From the upper extent of tidal influence in rivers to 10 km into the ocean. Offshore. Beyond 10 km from shore. Open ocean. At least 10 km from shore, usually in clear water. New England. Southern New England, from Cape Cod to Sandy Hook, New Jersey. Mid-Atlantic region. From Sandy Hook south to Cape Hatteras, North Carolina. Southeast region. From Cape Hatteras, North Carolina, to Cape Canaveral, Florida. Gulf. Gulf of Mexico from Fort Myers, Florida, to the Rio Grande, Texas. In many cases, we indicate that a taxon occurs from the Atlantic into (or throughout) the Gulf; that statement may carry an element of uncertainty regarding extreme southern Florida. When we state that a species ranges from Massachusetts (the northern limit of our coverage) southward, that does not mean that Massachusetts is necessarily the northern limit of its range. Salinity Terms psu. Salinity in practical salinity units (the symbols ‰, or ppt, are equivalent to psu). Current convention favors dropping the “psu” after the numerical value if the term “salinity” occurs in the sentence. Estuarine. Brackish areas, including bays, sounds, inlets, creeks, and rivers, from lowsalinity (30 psu. Scientific Names Genus and species names (in italics) are used throughout. Taxonomists commonly redefine associations among taxa that require changes in existing scientific names. In the headings used in this guide, current names are sometimes followed by older (more familiar) names. These older names are preceded by the term “formerly.” Scientific names following an equal sign identify cases in which alternative scientific names are in use. The World Reg- HOW TO USE THIS BOOK TO IDENTIFY ZOOPLANKTON 47 ister of Marine Species lists the currently accepted scientific names. When common names are also given, they are usually those suggested by the American Fisheries Society. REFERENCES AND ADDITIONAL READING Identification References, listed with each group, provide detailed treatments, including original descriptions and coverage of less common species. References with details on the occurrence and abundance of each taxonomic group appear in Appendix 5: Regional Surveys. These published regional studies usually report the results of...

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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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