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Registros recuperados: 8
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Assessing Risks to Wildlife Populations from Multiple Stressors: Overview of the Problem and Research Needs. Ecology and Society
Munns, Jr., Wayne R.; U.S. Environmental Protection Agency; munns.wayne@epa.gov.
Wildlife populations are experiencing increasing pressure from human-induced changes in the landscape. Stressors including agricultural and urban land use, introduced invasive and exotic species, nutrient enrichment, direct human disturbance, and toxic chemicals directly or indirectly influence the quality and quantity of habitat used by terrestrial and aquatic wildlife. Governmental agencies such as the U.S. Environmental Protection Agency are required to assess risks to wildlife populations, in its broadest definition, that result from exposure to these stressors, yet considerable uncertainty exists with respect to how such assessments should be conducted. This uncertainty is compounded by questions concerning the interactive effects of co-occurring...
Tipo: Peer-Reviewed article Palavras-chave: Ecological risk assessment; Multiple stressors; Wildlife populations; Extrapolation; Population models; Research needs.
Ano: 2006
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Assessing the risk of vulnerable species exposure to deepwater trawl fisheries: the case of orange roughy Hoplostethus atlanticus to the west of Ireland and Britain ArchiMer
Dransfeld, Leonie; Gerritsen, Hans D.; Hareide, Nils R.; Lorance, Pascal.
With slow growth rates, late maturity and a high maximum age of 100 years or more, orange roughy can be classified as a vulnerable deepwater fish species that can only sustain low rates of exploitation. Historical patterns of exploitation associated with this species suggest that it is currently not possible to manage its fisheries in the Northeast Atlantic sustainably, and the total allowable catch for orange roughy has been gradually reduced to zero for European fisheries since 2010. Orange roughy to the west of Ireland and Britain occurs on distinct bathymetric features (seamounts, hills and canyons) as well as on flat ground along the continental slope. Productivity-susceptibility analysis (PSA) was performed to evaluate the biological vulnerability of...
Tipo: Text Palavras-chave: Ecological risk assessment; VMS; Continental slope; Beryciformes; Atlantic Ocean.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00176/28758/27234.pdf
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Assessment of ecological risk to populations of aquatic invertebrates IBSS Repository
Tsytsugina, V. G..
On the base of experimental data and cytogenetic studies of marine and freshwater invertebrates natural populations it was shown that different species had approximately equal part (%) of full value posterity at the same average level of chromosome mutagenesis for populations, independing on deleterious factors and females fecundity. This phenomenon made it possible to calculate specimens reproductive contribution for species with different females fecundity and to assess expected reduction of population adaptive potential and the increase of ecological risk at different levels of population damage. It is suggested that the adaptation to pollution will be more effective in populations with high female fecundity.
Tipo: Journal Contribution Palavras-chave: Aquatic invertebrates; Pollution; Fecundity; Adaptation; Ecological risk assessment; Водные беспозвоночные; Загрязнение; Плодовитость; Адаптация; Оценка экологического риска.
Ano: 2009 URL: http://repository.ibss.org.ua/dspace/handle/99011/1085
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Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile Chilean J. Agric. Res.
Ávila,Gonzalo; Gaete,Hernán; Sauvé,Sébastien; Neaman,Alexander.
The Aconcagua River basin (Central Chile) is one of the most important agricultural areas in the country. However, several copper (Cu) mining operations are located in the basin. The objective of the study was to determine Cu toxicity for the earthworm Eisenia fetida (Savigny 1826) in the agricultural soils of the basin. We determined the production of cocoons and juveniles of earthworms in the studied soils. The soils differed in the concentrations of organic matter (OM, range 2-6%), pH (range 7.3-8.3), texture (from loamy sand to clay loam), and total Cu concentrations (range 230-960 mg kg-1). Concentrations of Cu and OM in the soils were the variables that determined the earthworms’ biological response. In contrast, pH and texture did not affect this...
Tipo: Journal article Palavras-chave: Aconcagua River; Ecological risk assessment; Cu mining; Trace elements.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200015
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Selection of bee species for environmental risk assessment of GM cotton in the Brazilian Cerrado. Repositório Alice
PIRES, C. S. S.; SILVEIRA, F. A.; CARDOSO, C. F.; SUJII, E. R.; PAULA, D. P.; FONTES, E. M. G.; SILVA, J. P. da; RODRIGUES, S. M. M.; ANDOW, D. A..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Gossypium hirsutum; Biological diversity; Ecological risk assessment; Pollination services; Transgenic crops; Wild bees.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1000938
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Selection of bee species for environmental risk assessment of GM cotton in the brazilian Cerrado. Repositório Alice
PIRES, C. S. S.; SILVEIRA, F. A.; CARDOSO, C. F.; SUJII, E. R.; PAULA, D. P.; FONTES, E. M. G.; SILVA, J. P. da; RODRIGUES, S. M. M.; ANDOW, D. A..
The objective of this work was to list potential candidate bee species for environmental risk assessment (ERA) of genetically modified (GM) cotton and to identify the most suited bee species for this task, according to their abundance and geographical distribution. Field inventories of bee on cotton flowers were performed in the states of Bahia and Mato Grosso, and in Distrito Federal, Brazil. During a 344 hour sampling, 3,470 bees from 74 species were recovered, at eight sites. Apis mellifera dominated the bee assemblages at all sites. Sampling at two sites that received no insecticide application was sufficient to identify the three most common and geographically widespread wild species: Paratrigona lineata , Melissoptila cnecomola and Trigona spinipes ,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ecological risk assessment; Pollination services; Transgenic crops; Wild bees; Diversidade biológica; Avaliação de risco ambiental; Serviços de polinização; Cultura trangênica; Abelha silvestre; Gossypium hirsutum; Gossypium hirsutum; Biological diversity.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/995463
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Selection of bee species for environmental risk assessment of GM cotton in the Brazilian Cerrado PAB
Pires,Carmen Sílvia Soares; Silveira,Fernando Amaral; Cardoso,Carolina Ferreira; Sujii,Edison Ryotii; Paula,Débora Pires; Fontes,Eliana Maria Gouveira; Silva,Joseane Padilha da; Rodrigues,Sandra Maria Morais; Andow,David Alan.
The objective of this work was to list potential candidate bee species for environmental risk assessment (ERA) of genetically modified (GM) cotton and to identify the most suited bee species for this task, according to their abundance and geographical distribution. Field inventories of bee on cotton flowers were performed in the states of Bahia and Mato Grosso, and in Distrito Federal, Brazil. During a 344 hour sampling, 3,470 bees from 74 species were recovered, at eight sites. Apis mellifera dominated the bee assemblages at all sites. Sampling at two sites that received no insecticide application was sufficient to identify the three most common and geographically widespread wild species: Paratrigona lineata, Melissoptila cnecomola, and Trigona spinipes,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gossypium hirsutum; Biological diversity; Ecological risk assessment; Pollination services; Transgenic crops; Wild bees..
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000800573
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State of the science and the way forward for the ecotoxicological assessment of contaminated land PAB
Kuperman,Roman G.; Checkai,Ronald T.; Garcia,Marcos Vinicius Bastos; Römbke,Jörg; Stephenson,Gladys L.; Sousa,José Paulo.
Over the past two decades, soil ecotoxicologists have made strides in utilizing the basic concepts and advancements in soil zoology and ecology. They have applied the existing tools, and developed new ones to investigate how chemical contamination can affect soil ecosystems, including the degradation or destruction of soil quality and habitats or the diminishment of belowground biodiversity. Soil ecotoxicologists are applying a suite of standard protocols, originally developed as laboratory tests with single chemicals (e.g., pesticides), and further enhancing both the approaches and protocols for the assessment of contaminated lands. However, ecological relevance of some approaches remains unresolved. The authors discuss the main challenges for a coherent...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Contamination; Ecological relevance; Ecological risk assessment; Soil pollution; Terrestrial model ecosystems; Toxicity tests.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800004
Registros recuperados: 8
Primeira ... 1 ... Última
 

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