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- W2056501969 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 340:173-187 (2007) - doi:10.3354/meps340173 Ecology of Acartia tonsa in Apalachicola Bay, Florida, and implications of river water diversion J. N. Putland*, R. L. Iverson Department of Oceanography, Florida State University, Tallahassee, Florida 32306-4320, USA *Email: jputland@hboi.edu ABSTRACT: Acartia tonsa herbivory, carnivory, egg production rate, egg production efficiency, and abundance were studied within various salinity regimes in Apalachicola Bay throughout a 2 yr period. The percent of phytoplankton productivity ingested by A. tonsa ranged from 0 to 24% (median 0.4%). The diet of A. tonsa was mixed. On average, 53% of the diet was composed of phytoplankton. Per capita total ingestion rate averaged 1.1 ± 1.3 (± SD) µg C adult1 d1 during winter, peaked to about 6 µg C adult1 d1 during summer, and averaged 2.2 ± 1.8 µg C adult1 d1 during summer. A. tonsa ingested the equivalent of 38 ± 48% and 120 ± 93% of its body carbon during winter and summer, respectively. During summer, per capita total ingestion rate increased below 20 psu. Average egg production rate (EPR) was lower during winter (13 ± 15 eggs female1 d1) than during summer (28 ± 24 eggs female1 d1). During summer, EPR peaked between about 4 and 10 psu. During winter and summer, egg production efficiency (EPE) peaked between about 8 and 14 psu. Salinity tolerance and biochemical composition of phytoplankton ingested may have influenced EPE. Phytoplankton allocated more carbon to protein and lipid synthesis in lower salinity water. The areal extent of lower (<20 psu) salinity water decreases in Apalachicola Bay during periods when river discharge is low. Therefore, upstream water diversion during summer can be expected to reduce the areal extent of lower (<20 psu) salinity waters where ingestion rate, EPE, and EPR of A. tonsa are greatest and where A. tonsa is an important prey for Anchoa mitchilli. KEY WORDS: River discharge · Management · Fisheries · Estuarine · Ecology · Acartia tonsa Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 340. Online publication date: June 18, 2007 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2007 Inter-Research." @default.
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- W2056501969 title "Ecology of Acartia tonsa in Apalachicola Bay, Florida, and implications of river water diversion" @default.
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