Seasonal changes in quantity and composition of suspended particulate organic matter in lagoons of the Alaskan Beaufort Sea

• DOI: 10.3354/meps11207
• Publication Date: 2015-02-16T15:11:30Z
• Authors: TL Connelly; JW McClelland; BC Crump; CTE Kellogg; KH Dunton
• Keywords: Beaufort scale

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 527:31-45 (2015) - DOI: https://doi.org/10.3354/meps11207 Seasonal changes in quantity and composition of suspended particulate organic matter lagoons Alaskan Beaufort Sea Tara L. Connelly1,*, James W. McClelland1, Byron C. Crump2, Colleen T. E. Kellogg2,3, Kenneth H. Dunton1 1Marine Science Institute, University Texas at Austin, 750 Channel View Dr., Port Aransas, TX 78373, USA 2College Earth, Ocean Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, 3Present address: Department Microbiology Immunology, Life Sciences British Columbia, Vancouver, BC V6T 1Z3, Canada *Corresponding author: [e-mail] ABSTRACT: Estuarine ecosystems Arctic are subject extreme seasonal physico-chemical environment, but multi-season studies these near-shore systems relatively scarce. We measured bulk concentrations, fatty acids, pigments, δ13C δ15N (POM) collected from along coast during full-ice cover (April), ice break-up (June), open water (August) found that quantity, sources POM vary widely among seasons. saw a shift across all (1) low concentrations (80 µg C l-1) predominantly refractory material April (2) high (>500 with new inputs diatom production river June (3) consumer-, dinoflagellate- and/or green algae-influenced system August. Relatively values seasons (≤-25‰) suggest terrestrial was major component pool throughout year. Concurrently, acid pigment profiles show varying primary producers seasons, higher relative dinoflagellate contributions vice versa Elevated 22:6ω3/20:5ω3 (docosahexaenoic acid/eicosapentaenoic acid) ratios polyunsaturated proportions August indicate provides animals essential nutrients. These results demonstrate compositions available consumers product dynamic seasonality ice-dominated, yet productive estuarine ecosystems. KEY WORDS: Particulate · Fatty acids Bulk stable isotopes Pigments Food webs Nutritional quality Biomarkers Polar waters Full text pdf format Supplementary PreviousNextCite this article as: Connelly TL, McClelland JW, Crump BC, Kellogg CTE, Dunton KH Sea. Mar Ecol Prog Ser 527:31-45. Export citation Tweet linkedIn Cited by Published Vol. 527. Online publication date: May 07, 2015 Print ISSN: 0171-8630; 1616-1599 Copyright © Inter-Research.