Assessment of recent sediment influence in an urban polluted subantarctic coastal ecosystem. Beagle Channel (Southern Argentina)

MARINE POLLUTION BULLETIN

卷:62

Article

Gil, M. N.¹  Torres, A. I.¹  Amin, O.²  Esteves, J. L.¹ 

[1] Ctr Nacl Patagon CONICET, RA-9120 Puerto Madryn, Chubut, Argentina

[2] Ctr Austral Invest Cient CONICET, RA-9410 Ushuaia, Tierra Fuego, Argentina

关键词: Eutrophication;    Sediment and water quality;    Sediment-water exchanges;    Biochemical components;    Beagle Channel;   

DOI  :  10.1016/j.marpolbul.2010.10.004

来源: Elsevier

【 摘 要 】

In this study, baseline information about the environmental status of Ushuaia (UB) and Golondrina (GB) bays is presented. Surface and bottom seawater and freshwater discharged from land were evaluated. Multivariate analysis identified different water quality zones within the bays, two of them located next to the north and northwest coastlines of UB, where the majority of human activities are developed. Porosity, total organic matter, biochemical components, ammonium, and phytopigments were determined in sediment samples from each quality zone. Benthic fluxes of nutrients and dissolved oxygen were assessed in situ using opaque chambers. In northwest zone of UB, carbon equivalents of proteins and carbohydrates in surficial sediments were the same order as in hypertrophic ecosystems, whereas ammonium and phosphate released from sediment greatly exceeded the allochthonous sources. Management of municipal wastewater is required to remediate this chronic pollution. (C) 2010 Elsevier Ltd. All rights reserved.

【 授权许可】

Free