Freshwater Biodiversity
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. The history of the introduction of the giant river prawn, Macrobrachium cf. rosenbergii (Decapoda, Palaemonidae), in Brazil: new insights from molecular data
The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in the world and has been introduced into more than 40 countries. In some countries, this prawn is considered an invasive species that requires close monitoring. Recent changes in the taxonomy of this species (separation of M. rosenbergii and M. dacqueti) re
Genetics and Molecular Biology. Publicado em: 22/12/2010
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14. Reprodução e cultivo de bivalves límnicos ameaçados de extinção: uma estratégia para a conservação do gênero Diplodon (Spix, 1827) (Mollusca, Hyriidae) / Reproduction and cultivation of threatened freshwater mussels: a strategy for the conservation of the genus (Spix, 1827) (Mollusca, Hyriidae)
The freshwater mussels, or naides of the order Unionoida, representing the largest radiation of the bivalves in freshwater, with six families, 181 genera and 800 species, are found on all continents, and currently represent the group of freshwater animals in higher risk of extinction. The most dramatic decline and extinction of freshwater mussels are the mod
Publicado em: 2010
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15. Variação genética em Salminus hilarii (Valenciennes, 1849) na região do Alto Rio São Francisco, MG e contribuições para a conservação do grupo
The São Francisco river comprises one of the largest and most important river basins of Brazil and one of its main characteristics is the variety of fish species. The genus Salminus (Characiformes: Characidae) constitutes a group of migratory fish with great economic importance in fishing and gastronomy. Within this genus, Salminus hilarii (tabarana), due t
Publicado em: 2010
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16. Comunidade de aves aquáticas e suas interações em sistemas límnicos do sudeste brasileiro
As aves aquáticas interagem de diversas maneiras com os ambientes de água doce. Por um lado, as aves podem ser consideradas como os mais importantes dispersores de algas fitoplancônicas entre os corpos de água doce e, por outro lado, podem contribuir de maneira significativa ao aporte de nutrientes nos ecossitemas aquáticoss. Nesse trabalho foi estudado
Publicado em: 2008
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17. Analysis of environmental sustainability of the superficial freshwater classification system / Análise da sustentabilidade ambiental do sistema de classificação das águas doces superficiais
Brazil is a country endowed with great superficial water reserves and aquatic biodiversity, despite its unequal distribution among diverse hydrographic regions. In view of the sustainable development concept established in many international environment and water treated, objectified to the aquatic ecosystems preservation and the equitable distribution of th
Publicado em: 2006
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18. BIOLOGIA POPULACIONAL DO CARANGUEJO DE ÃGUA DOCE Trichodactylus petropolitanus NO CÃRREGO DA MINA, CAÃAPAVA, SP: MONITORAMENTO AMBIENTAL A PARTIR DE ESTUDO DE POPULAÃÃES ANIMAIS / Population biology of the freshwater crab Trichodactylus petropolitanus in the CÃrrego da Mina, CaÃapava, SP: environmental monitoring from animal population studies
The freshwater crab Trichodactylus petropolitanus (GÃldi, 1886), is an endemic Brazilian species with occurrence in the States of Minas Gerais, Rio de Janeiro, SÃo Paulo, Paranà and Santa Catarina, being its distribution widely coincident with the domain of the almost extinct Mata AtlÃntica forest. Besides its importance in the trofic web of lotic system
Publicado em: 2005
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19. Floating plant dominance as a stable state
Invasion by mats of free-floating plants is among the most important threats to the functioning and biodiversity of freshwater ecosystems ranging from temperate ponds and ditches to tropical lakes. Dark, anoxic conditions under thick floating-plant cover leave little opportunity for animal or plant life, and they can have large negative impacts on fisheries
The National Academy of Sciences.
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20. Phytoplankton species richness scales consistently from laboratory microcosms to the world's oceans
Species-area relationships have been observed for virtually all major groups of macroorganisms that have been studied to date but have not been explored for microscopic phytoplankton algae, which are the dominant producers in many freshwater and marine ecosystems. Our analyses of data from 142 different natural ponds, lakes, and oceans and 239 experimental e
National Academy of Sciences.
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21. Global environmental impacts of agricultural expansion: The need for sustainable and efficient practices
The recent intensification of agriculture, and the prospects of future intensification, will have major detrimental impacts on the nonagricultural terrestrial and aquatic ecosystems of the world. The doubling of agricultural food production during the past 35 years was associated with a 6.87-fold increase in nitrogen fertilization, a 3.48-fold increase
The National Academy of Sciences.