Ecosystem health of Montevideo coastal zone: A multi approach using some different benthic indicators to improve a ten-year-ago assessment

详细信息    查看全文

• 作者：P. Muniz^a ; ^{pmmaciel@usp.br} ; N. Venturini^a ; M. Hutton^a ; N. Kandratavicius^a ; A. Pita^a ; E. Brugnoli^a ; L. Burone^b ; F. Garc&#xed ; a-Rodr&#xed ; guez^a
• 关键词：Coastal sediments ; Benthic communities ; Trophic state ; R&#xed ; o de la Plata Estuary ; Uruguay
• 刊名：Journal of Sea Research
• 出版年：2011
• 出版时间：January 2011
• 年：2011
• 卷：65
• 期：1
• 页码：38-50
• 全文大小：591 K

文摘

A study on the benthic ecosystem health was performed to assess the environmental quality of Montevideo coastal zone, in view of the construction of a new sanitation system. Data were compared to previous research undertaken 10 years ago, and biochemical composition of organic matter, heavy metals, organic matter, phytopigments, benthic diatoms, macrofauna community structure and a biotic index (AMBI) were used as proxies. Results indicate an environmental quality-gradient, with the worst conditions within the inner stations of Montevideo Bay and an improvement towards the adjacent coastal zone. Higher levels of chromium, lead, phaeopigments, organic biopolymers and poor benthic macrofauna and diatom communities, characterised the hypertrophic innermost portion of Montevideo Bay. Data indicated a clear deterioration of the adjacent coastal zone comparatively to that observed 10 years ago. The complementary use of approaches not applied before (benthic diatoms and organic biopolymers) with those formerly applied improve our assessment of the trophic status and the environmental health of the area.