Journal
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
Volume 122, Issue -, Pages 113-121Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr.2017.01.012
Keywords
Ostracoda; Soft sediment; Epifauna; Infauna; Paleoceanography; Icelandic Waters
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Funding
- Council of the Hong Kong Special Administrative Region, China [HKU 17306014, HKU 17311316]
- Seed Funding Program for Basic Research of the University of Hong Kong [201210159043, 201511159075, 201411159017]
- German/Hong Kong Joint Research Scheme [G_HK044/11]
- DAAD [54367105]
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The depth distribution of living specimens of deep-sea benthic ostracods (small crustaceans with calcareous shells that are preserved as microfossils) in sediments is poorly understood, despite the importance of this aspect of basic ostracod biology for paleoecologic and paleoceanographic interpretations. Here, we investigated living benthic ostracod specimens from deep-sea multiple core samples, to reveal their depths distributions within sediment cores. The results showed shallow distribution and low population density of living deep-sea benthic ostracods (which are mostly composed of Podocopa). The living specimens are concentrated in the top 1 cm of the sediment, hence deep-sea benthic ostracods are either epifauna or shallow infauna. This observation is consistent with the information from shallow-water species. We also confirmed shallow infaunal (0.5-2 cm) and very shallow infaunal (0-1 cm) habitats of the deep-sea ostracod genera Krithe and Argilloecia, respectively.
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