A long-term copper exposure on freshwater ecosystem using lotic mesocosms: Primary producer community responses

Roussel, H.; Ten-Hage, Loı̈c; Joachim, Sandrine; Cohu, R. Le; Gauthier, Laury; Bonzom, Jean‐Marc

doi:10.1016/j.aquatox.2006.12.006

Cited by 61 publications

(44 citation statements)

References 52 publications

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“…Similar results were observed using lotic mesocosms in which the only variable parameter was the concentration of metal (copper), whereas other parameters (the initial primary producer community and water chemistry) were identical [16]. Some taxa of the natural primary producer community (phytoplankton, periphyton and macrophytes) seemed to be sensitive to copper.…”

Section: Introductionsupporting

confidence: 80%

The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity

Smolyakov

Ryzhikh

Romanov

2010

Journal of Hazardous Materials

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Section: Introductionsupporting

confidence: 80%

The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity

Smolyakov

Ryzhikh

Romanov

2010

Journal of Hazardous Materials

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“…As previously shown, the 4-week Cu exposure strongly reduced total and algal biomass ( [Barranguet et al, 2003] , and [Serra and Guasch, 2009] ) and triggered a marked shift in the algal community structure ( [Soldo and Behra, 2000] , [Guasch et al, 2002] , [Roussel et al, 2007] , [Serra and Guasch, 2009] and ). It led to a significant increase in green algae fraction and a decrease in diatom fraction, while no change was observed in the proportion of cyanobacteria.…”

Section: Recovery Of Phototrophic Communitiesmentioning

confidence: 68%

Structural and functional recovery of microbial biofilms after a decrease in copper exposure: Influence of the presence of pristine communities

Lambert¹,

Morin²,

Artigas³

et al. 2012

Aquatic Toxicology

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The present study aimed at assessing the recovery of phototrophic and heterotrophic biofilm communities after a decrease in copper exposure. An original experiment was designed to evaluate the possible influence of non-exposed (i.e. pristine) communities (e.g. via immigration processes) in recovery dynamics. Laboratory channels were used to study the structural and functional changes in microbial communities after a 4-week Cu exposure period in the presence and absence of pristine biofilms. When pristine biofilms were present, phototrophic communities recovered within 6 weeks, both in terms of biomass, structure and photosynthetic activity. Recovery processes were also detected using the PICT approach. In contrast, in the absence of pristine communities, all of the Cu-induced changes recorded in the phototrophic communities remained throughout the recovery period.Regardless of the presence or absence of pristine biofilms, the decrease in Cu exposure did not abolish Cu-induced changes in bacterial community structure, whereas functional recovery (based on beta-glucosidase activity) was complete in both recovery contexts.These results revealed that microbial community response to a decrease in Cu exposure differs between phototrophic and heterotrophic communities. The presence of pristine communities greatly influences the structural and functional recovery of phototrophic communities, suggesting an important role of microbial immigration processes, but have far less influence on the recovery trajectory of heterotrophic communities. Highlights► We tested the influence of microbial immigration in biofilm recovery after a Cu exposure.► Recovery dynamics differed between phototrophic and heterotrophic communities.► Microbial immigration enhanced the recovery of phototrophic communities.► Heterotrophic community recovery slightly depended on microbial immigration processes.

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“…It is assumed that heavier fish for a given length is in better condition and able to indicate fish fitness under metabolic stress caused by pollution; as trade-off it is required deal to detoxification and the energy available for growth may thus be reduced. CF in fish is known to decline upon exposure to heavy metal (Roussel et al, 2007;Bervoets et al, 2009), polycyclic aromatic hydrocarbon (PAHs) and polychlorinated biphenyls (PCBs) (Khan, 2003). Furthermore, condition factor can vary seasonally, being directly associated with food availability (Le Cren, 1951;Bolger & Connolly, 1989;Braga & Andrade, 2005;Sudarshan & Kulkarni, 2013).…”

Section: Introductionmentioning

confidence: 99%

<b>The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil

Morado

Araújo

Gomes

2017

Acta Sci. Biol. Sci.

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ABSTRACT. Biomarkers are measurements within an organism that respond to environmental effects and are used as tools in bioassessment programs since they reflect physiological changes induced by exposure to pollutants. The hepatosomatic index (HSI) and the condition factor (CF) in three fish species Geophagus brasiliensis, Hypostomus affinis and Hypostomus auroguttatus were used to assess effects of pollutant stress in a tropical river during two seasons (dry and wet). Fish from the least disturbed sites had the lowest condition factor (CF) and the lowest HSI, whereas those from sites near pollutant discharges had the highest CF and HSI. Higher HSI and lower CF occurred during the dry season. It is suggested that species adapted to stressful conditions take advantage on food availability from organic loads or unoccupied niches by lesser tolerant species, increasing CF. We concluded that higher HSI values were directly associated with environmental stress whereas the higher CF values are related to availability of food resources derived from organic loads or other sources. CF and HSI are simple and cost-effective, thus suitable as routine screening tools in pollution monitoring, but caution should be taken in relating changes in physiological measurements and any specific pollutant to prevent misinterpretation.Keywords: condition factor, hepatosomatic index, fishes, monitoring, rivers.O uso de biomarcadores para avaliar efeitos de estresses de poluentes sobre espécies de peixes em um rio tropical no sudeste do Brasil RESUMO. Biomarcadores são medidas dentro de um organismo que respondem a efeitos ambientais e são utilizadas em programas de bioavaliação, já que refletem alterações fisiológicas induzidas pela exposição a poluentes. O índice hepatossomático (IHS) e o fator de condição (FC) das espécies Geophagus brasiliensis, Hypostomus affinis e Hypostomus auroguttatus foram calculados em um rio tropical durante duas estações (seca e cheia). Peixes de locais menos alterados apresentaram menores FC e IHS, enquanto os de locais próximos de descargas de poluentes apresentaram maiores FC e IHS. Maiores IHS e menores FC ocorreram durante a estação seca, comparados com a estação chuvosa. É sugerido que espécies adaptadas às condições estressantes levam vantagem da disponibilidade de alimentos próxima às descargas orgânicas ou nichos não ocupados por espécies menos tolerantes, aumentado o FC. Os valores mais elevados do IHS foram diretamente associados ao estresse ambiental, enquanto os valores mais elevados FC estão relacionados com a disponibilidade de recursos alimentares derivados de descargas orgânicas ou outras fontes. FC e IHS são simples e de baixo custo, portanto, adequados como ferramentas no controle da poluição, mas cuidados devem ser tomados ao relacionar suas mudanças às medições fisiológicas ou a qualquer poluente específico para evitar efeitos de interferência.Palavras-chave: fator de condição, índice hepatossomático, peixes, monitoramento, rios.

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A long-term copper exposure on freshwater ecosystem using lotic mesocosms: Primary producer community responses

Cited by 61 publications

References 52 publications

The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity

The fate of Cu, Zn, and Cd in the initial stage of water system contamination: The effect of phytoplankton activity

Structural and functional recovery of microbial biofilms after a decrease in copper exposure: Influence of the presence of pristine communities

<b>The use of biomarkers for assessing effects of pollutant stress on fish species from a tropical river in Southeastern Brazil

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