Detection of environmental impacts of shrimp farming through multiple lines of evidence

被引:44
作者
Hatje, Vanessa [1 ]
de Souza, Manuel M. [1 ]
Ribeiro, Luisa F. [1 ,2 ]
Eca, Gilmara F. [1 ,3 ]
Barros, Francisco [2 ]
机构
[1] Univ Fed Bahia, Inst Quim, Ctr Interdisciplinar Energia & Ambiente CIENAM, Rua Barao de Jeremoabo S-N, BR-40170290 Salvador, BA, Brazil
[2] Univ Fed Bahia, Inst Biol, LEB, Rua Barao de Jeremoabo S-N, BR-40170115 Salvador, BA, Brazil
[3] Univ Fed Reconcavo Bahia, Dept Ciencias Exatas & Tecnol, Rui Barbosa 710, Cruz das Almas, BA, Brazil
关键词
Aquaculture impacts; Nutrients; Trace elements; Macrobenthic assemblages; Todos os Santos Bay; BENTHIC MACROFAUNAL ASSEMBLAGES; OS SANTOS BAY; MACROBENTHIC ASSEMBLAGES; METAL CONTAMINATION; ORGANIC-MATTER; AQUACULTURE; SEDIMENTS; ESTUARINE; FISH; MANAGEMENT;
D O I
10.1016/j.envpol.2016.06.056
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In order to evaluate the impact of semi-intensive shrimp farming, comparisons between Control and Impact areas were made based on multiple lines of evidence using an asymmetrical design. Water and sediment samples were collected in four shrimp farms located in Todos os Santos Bay, Bahia, Brazil. Nutrients, trace elements and macrobenthic assemblages were evaluated using uni- and multivariate analyzes. Significant differences were observed between Impact and Control areas for the water column dataset (i.e., ancillary variables, SPM, dissolved nutrients and major and trace elements in SPM), whereas no significant differences were observed for the chemistry of sediments. Macrobenthic assemblages were negatively affected by shrimp farm activities. Impacted sites presented the lowest abundance, richness and different structure of macrofaunal benthic assemblages. Farms clearly produced negative impacts in the Todos os Santos Bay. This conclusion was only possible to be reached through the use of multiple lines of evidence. Chemistry and benthic assemblages data combined produced a better description of the quality and impacts of the evaluated environments. Different conclusions would have been reached if chemistry and ecology results were studied separately vs. together. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:672 / 684
页数:13
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