Effects of pollutants on freshwater organisms

Hall, Scott; Chamberlain, Jim F.; Godwin-Saad, Erika

doi:10.2175/106143095x135949

Cited by 4 publications

(1 citation statement)

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“…In addition, residues of pesticides and other organochlorine compounds are discharged in aquatic ecosystems and are extremely harmful to the development of vertebrates such as amphibians, reptiles and birds (Bonin et al, 1995;Rybitski et al, 1995;Bishop et al, 1996). These products can also affect aquatic invertebrates (Hall, Chamberlain & Godwin-Saad, 1995) and so may in¯uence the aquatic food web. In contrast to the immediate impact observed for inorganic products discharged in ecosystems, the consequences of domestic waste in the aquatic environment may be contradictory.…”

Section: Discussionmentioning

confidence: 99%

Feeding ecology, density and biomass of the freshwater turtle,Phrynops geoffroanus, inhabiting a polluted urban river in south‐eastern Brazil

Souza

Abe

2000

Journal of Zoology

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This study examines the ecology of a population of Geoffroy's side-necked turtle Phrynops geoffroanus inhabiting a polluted urban river in Ribeira Äo Preto city, Sa Äo Paulo state, south-eastern Brazil. Adult turtles fed mainly on Chironomidae larvae and pupae (Chironomus cf. plumosus, 100% of occurrence frequency) and domestic waste, but they also consumed terrestrial items (cockroach, snails) and carrion. Juvenile turtles showed more feeding diversity than the adults and exhibited a trend for predation on Chironomidae pupae, but this is not re¯ected in resource partitioning. The elevated number of turtles (170 ±230 turtles/ha of river) and biomass (255 ±345 kg/ha of river) inhabiting this urban river is probably the result of the abundance of sewage and organic waste produced by humans, the absence of predators, and increased availability of nesting areas. Such factors convert this area into an environment highly advantageous for the survival of Geoffroy's side-necked turtle.

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Section: Discussionmentioning

confidence: 99%

Feeding ecology, density and biomass of the freshwater turtle,Phrynops geoffroanus, inhabiting a polluted urban river in south‐eastern Brazil

Souza

Abe

2000

Journal of Zoology

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Waste Management for the Food Industries

2008

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Direct determination of metal concentrations in freshwater algae by total reflection X-ray fluorescence spectrometry

Barkács

Varga

Gál-Sólymos

et al. 1999

J. Anal. At. Spectrom.

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A direct TXRF method for the determination of metal impurities by applying three different freshwater algae, viz., Chlorella keslerii, Synehococcus sp. and Cylindrospermopsis raciborskii, was developed. The applicability of the slurry sampling technique was confirmed by comparing the analytical results obtained with those obtained by total digestion of the algae. The concentration data showed an acceptable agreement for Cu, Fe, Mn and Zn. The calculated accumulation factors for the metals detected were highest for Chlorella keslerii.

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Effects of pollutants on freshwater organisms

Cited by 4 publications

References 84 publications

Feeding ecology, density and biomass of the freshwater turtle,Phrynops geoffroanus, inhabiting a polluted urban river in south‐eastern Brazil

Feeding ecology, density and biomass of the freshwater turtle,Phrynops geoffroanus, inhabiting a polluted urban river in south‐eastern Brazil

Waste Management for the Food Industries

Direct determination of metal concentrations in freshwater algae by total reflection X-ray fluorescence spectrometry

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