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Registros recuperados: 3
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Are red mullet efficient as bio-indicators of mercury contamination? A case study from the French Mediterranean ArchiMer
Cresson, Pierre; Bouchoucha, Marc; Miralles, F.; Elleboode, Romain; Mahe, Kelig; Marusczak, Nicolas; Thebault, Herve; Cossa, Daniel.
Mercury (Hg) is one of the main chemicals currently altering Mediterranean ecosystems. Red mullet (Mullus barbatus and M. surmuletus) have been widely used as quantitative bio-indicators of chemical contamination. In this study, we reassess the ability of these species to be used as efficient bio-indicators of Hg contamination by monitoring during 18 months Hg concentrations in muscle tissue of mullet sampled from 5 French Mediterranean coastal areas. Mean concentrations ranged between 0.23 and 0.78 μg g−1 dry mass for both species. Values were consistent with expected contamination patterns of all sites except Corsica. Results confirmed that red mullets are efficient bio-indicators of Hg contamination. Nevertheless, the observed variability in Hg...
Tipo: Text Palavras-chave: Mercury; Bio-indicator; Fish; Mullus spp.; Mediterranean.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00244/35514/34083.pdf
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Taxonomic and non-taxonomic responses of benthic macroinvertebrates to metal toxicity in tropical reservoirs. The case of Cantareira Complex, São Paulo, Brazil Anais da ABC (AABC)
BEGHELLI,FREDERICO G.S.; CETRA,MAURÍCIO; MARCHESE,MERCEDES; LÓPEZ-DOVÁL,JÚLIO CÉSAR; ROSA,ANDRÉ H.; POMPÊO,MARCELO L. M.; MOSCHINI-CARLOS,VIVIANE.
Abstract Benthic macroinvertebrates are organisms that are recognized as water quality bio-indicators. A wide variety of indices and metrics have been shown to respond to a variety of anthropogenic impacts, usually under a general condition of environmental impairment. The absence of a clear distinction in the relations between specific pollutants and biotic variables is very common and can lead to biased interpretation of biomonitoring. The aims of this research were to test taxonomic and non-taxonomic responses to specific environmental conditions instead to general conditions. For this purpose, we estimated the theoretical toxicity by comparing toxicity values published by EPA with metal concentrations in water and sediments. Then we tested the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bio-indicator; Biomonitoring; Chironomid; Oligochaetes; Toxicity; Metal.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000300701
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What is the effect of soil use on ant communities? Neotropical Entomology
Schmidt,Fernando A.; Diehl,Elena.
Studies on ant communities in agroecosystems have contributed to the knowledge of the effect of agricultural activities on biological communities. The aim of this study is to explain the effect of soil use on ant communities. We tested the hypothesis that there was a decrease in ant species richness and a change in the species composition at habitats with more intense soil use. We collected ants using sardine baits, subterranean traps and direct sampling at four habitats with different soil use (secundary forest, Acacia forestry, initial stage of succession and mixed crops). The ant species richness did not decrease with intensity of soil use. In successional habitat the species numbers collected using sardine baits and subterranean traps were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agroecosystem; Biodiversity; Bio-indicator; Environmental monitoring; Formicidae.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000400005
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