Anthropogenic Habitat
Mostrando 13-24 de 39 artigos, teses e dissertações.
-
13. Changes in wild bee fauna of a grassland in Brazil reveal negative effects associated with growing urbanization during the last 40 years
Bee fauna and associated flora from a grassland site in Brazil, surveyed 40 and 20 years ago, were newly surveyed with comparable methodology to evaluate changes in the bee fauna of this site, considering that human population and urbanization has exponentially increased in the last 40 years. In general, bee species richness has declined in 22%, as well as t
Zoologia (Curitiba). Publicado em: 2013-04
-
14. O conhecimento de agricultores quilombolas sobre forrageio e uso de habitat por mamíferos de grande porte na Mata Atlântica: evidenciando a centralidade dos ambientes antropogênicos na constituição do etnoconhecimento (Vale do Ribeira, SP, Brasil) / The perception of quilombola smallholders concerning the foragin and habitat use of large mammals in the Atlantic Forest: evincing the centrality of anthropogenic environments in local knowledge (Ribeira Valley, Brazil)
A etnoecologia investiga as relações entre os humanos e o seu ambiente natural, incluindo o estudo do conhecimento ecológico de populações locais (CEL) sobre interações entre as espécies e destas com o ambiente. Suas principais temáticas de interesse incluem a compreensão do CEL em termos de: sua construção e compartilhamento entre as pessoas, su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/2012
-
15. Determinantes ecológicos do risco de extinção: abundância local, amplitude de nicho, capacidade de dispersão e a resposta das espécies de pequenos mamíferos à fragmentação florestal no Planalto Atlântico Paulista / Ecological determinants of extinction risk: local abundance, niche breadth, dispersal ability and response of small mammals to forest fragmentation at the Atlantic Plateau of São Paulo
Anthropogenic disturbances, particularly habitat loss and fragmentation, are considered the main causes of the increased extinction rates observed in the last decades. Since the risk of extinction is extremely variable among species, the ecological determinants of the chance of extinction have been in the center of the debates in the ecological literature. E
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
-
16. Spatial diversity patterns of birds in a vegetation mosaic of the Pantanal, Mato Grosso, Brazil
In this contribution we characterize the spatial diversity of bird populations in a heterogeneous landscape with respect to vegetation in the northern Pantanal region of Brazil. The method of additive partitioning of species diversity (γ = α + β) was used. Samples were collected in a grid with 30 sampling plots within a 25 km² area (5 x 5 km). A total of
Zoologia (Curitiba). Publicado em: 2011-12
-
17. Emissões de NO, N2O e CO2 em agroecossistemas do Cerrado.
ABSTRACT: In the last 30 years, the Cerrado Biome has suffered very intense conversion of its native vegetation into croplands (Brazilian Savanna). This habitat modification has contributed with 25% and 90% of the total CO2 and N2O anthropogenic emission respectively. Soil preparation (tillage and no-tillage), deposition of crop residues, cultivation of N-fi
Planaltina. Publicado em: 2011
-
18. Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic
The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010
-
19. Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic / Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica
Os danos causados pela proliferação de bordas na cobertura florestal, geralmente designados efeitos de borda, são extensos, podendo ocorrer através de grandes escalas espaciais e influenciar na composição de espécies, estrutura e processos ecológicos nos ecossistemas limítrofes. Apesar disso, os estudos têm demonstrado padrões de respostas altamen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010
-
20. Efeitos da fragmentação de habitat sobre a comunidade de pequenos mamíferos de Mata Atlântica no Estado de São Paulo / Effects of habitat fragmentation on community of the Atlantic forest small mammals in São Paulo State
The negative effects of habitat fragmentation on small-mammals are widely recognized. Nevertheless, the intensity of these effects depend on multiple factors such as the pattern of fragmentation, the evaluated scale, the permeability of different types of matrices, and the behavioral plasticity of different groups of species. In this study, we evaluated the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2010
-
21. Estrutura populacional de Aspidosperma polyneuron Muel. Arg. (Apocynaceae) em fragmento florestal do baixo Rio Tibagi por marcadores AFLP
The XXI century is characterized by intense fragmentation of tropical forests around the word which is responsible for environmental degradation, climate changes and loss of biodiversity. Such process is the focus of many studies that intend, primarily, to identify the effect of devastation in the gene pool of species that occupy degraded areas. The Tibagi R
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2010
-
22. Species richness in natural and disturbed habitats: Asteraceae and Flower-head insects (Tephritidae: Diptera)
Anthropogenic changes in the landscape result in an environmental mosaic with serious consequences for biodiversity. The aim of the present study was to assess the effects of the anthropogenic changes on Asteraceae richness and abundance, and to evaluate the consequences for the richness of Tephritidae assemblages in five sampling sites, with three sampled h
Neotropical Entomology. Publicado em: 2010-04
-
23. Habitat use by Callicebus coimbrai (Primates: Pitheciidae) and sympatric species in the fragmented landscape of the Atlantic Forest of southern Sergipe, Brazil
Anthropogenic habitat fragmentation is a chronic problem throughout the Brazilian Atlantic Forest biome. In the present study, four forest fragments of 60-120 ha were surveyed on a rural property in southern Sergipe, where two endangered primate species, Callicebus coimbrai Kobayashi & Langguth, 1999 and Cebus xanthosternos Wied-Neuwied, 1826, are found. Two
Zoologia (Curitiba). Publicado em: 2010
-
24. Comportamento do mercúrio em perfis de solos do sítio Ilha de Terra-Caxiuanã, Pará
Behavior of mercury in soil profiles with archaeological black earth (ABE) and surroundings area (SA) from Sítio Ilha de Terra, Caxiuanã, can provide information on anthropogenic activity of the Amazonian habitat. The samples of ABE and SA soil profiles were submitted to mineralogical chemical (total and sequential) analysis. The data show that the Hg occu
Química Nova. Publicado em: 2010