期刊
MARINE POLLUTION BULLETIN
卷 129, 期 1, 页码 114-125出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2018.02.018
关键词
Biopolymers; Organic matter accumulation; Foraminiferal biodiversity; Anthropic impact; Itaipu lagoon; Brazil
资金
- National Council for Scientific and Technological Development - CNPq [Universal 445830/2014-0]
- Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro - FAPERJ [RJ E26/11.399/2012]
- CAPES
- Universidade Federal do Estado do Rio de Janeiro
Lagoons in the southeast coast of Brazil have experienced eutrophication due to the exponential increase of human population and sewage discharges. Living benthic foraminifera have demonstrated to be good bioindicators of such impacts. This study aims to evaluate the organic matter accumulation effects on the foraminiferal distribution in the Itaipu lagoon (Brazil). On the basis of the biotic and abiotic analyses, three sectors are identified. The Sector I, an inner area, is characterized by high dissolved oxygen values and foraminiferal species with preference for marine conditions, demonstrating the sea influence. The Sector II, in the mangrove margins, is associated to sandy sediment and biopolymers and mainly represented by euryhaline species. The Sector III is marked by low density or absence of living foraminifera and corresponds to a low quality organic matter enriched area (North, Southwest and Centre).
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