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	Provedor de dados Ecology and Society (2) Zoologia (1) Autor Aguiar,Antonio José Camillo (1) Cane, James H; USDA-ARS; jcane@biology.usu.edu (1) Martins,Celso Feitosa (1) Minckley, Robert L; University of Utah; minckley@biology.utah.edu (1) Silveira, Fernando A; Universidade Federal de Minas Gerais; fernando@mono.icb.ufmg.br (1) Tepedino, Vincent J; USDA-ARS; andrena@biology.usu.edu (1) Williams, Neal M; University of Calgary; nwilliam@ucalgary.ca (1) Mais... Palavra-chave Apiformes (3) Apoidea (3) Bees (1) Conservation (1) Diversity (1) Faunal surveys (1) Flower-visiting insects (1) Functional groups (1) Insecta (1) Land-use change (1) Monitoring long-term changes (1) Native invertebrate pollinators (1) North America (1) Pollination (1) Pollinator declines (1) Sampling protocol (1) Solitary bees (1) Species composition (1) Species richness (1) Tabuleiro (1) Mais... Tipo do documento Peer-Reviewed Reports (2) Info:eu-repo/semantics/article (1) Ano 2002 (1) 2001 (2) País Canada (2) Brazil (1) Idioma Inglês (2) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Abelhas e vespas solitárias em ninhos-armadilha na Reserva Biológica Guaribas (Mamanguape, Paraíba, Brasil) Zoologia Aguiar,Antonio José Camillo; Martins,Celso Feitosa. The trap-nesting bees of Guaribas Biological Reserve were studied during one year. Three areas with different vegetation types were sampled, open savanas, closed forest, and a mosaic of these two types. Twelve species of trap-nesting bees were observed, four of which are parasites. The most abundant species were Centris tarsata (Smith, 1879), C. analis (Fabricius, 1804), Tetrapedia diversipes KJug, 1810, and Mesocheira bicolor (Fabricius, 1804). Nesting of Centris tarsata and Mesocheira bicolor occurred mainly during the dry season, while Centris analis and Tetrapedia diversipes did not show any seasonal preferences. Mesocheira bicolar occurred only in the nests of C. tarsata, parasitizing more than 50% of the nests and representing 23.2% of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Apoidea; Apiformes; Bees; Tabuleiro; Trap-nests. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500005 Causes and Extent of Declines among Native North American Invertebrate Pollinators: Detection, Evidence, and Consequences Ecology and Society Cane, James H; USDA-ARS; jcane@biology.usu.edu; Tepedino, Vincent J; USDA-ARS; andrena@biology.usu.edu. Ecosystem health and agricultural wealth in North America depend on a particular invertebrate fauna to deliver pollination services. Extensive losses in pollinator guilds and communities can disrupt ecosystem integrity, a circumstance that today forces most farmers to rely on honey bees for much fruit and seed production. Are North America's invertebrate pollinator faunas already widely diminished or currently threatened by human activities? How would we know, what are the spatiotemporal scales for detection, and which anthropogenic factors are responsible? Answers to these questions were considered by participants in a workshop sponsored by the National Center for Ecological Analysis and Synthesis in October of 1999, and these questions form the nucleus... Tipo: Peer-Reviewed Reports Palavras-chave: Apiformes; Apoidea; Insecta; Conservation; Diversity; Land-use change; Native invertebrate pollinators; North America; Pollination; Pollinator declines. Ano: 2001 Variation in Native Bee Faunas and its Implications for Detecting Community Changes Ecology and Society Williams, Neal M; University of Calgary; nwilliam@ucalgary.ca; Minckley, Robert L; University of Utah; minckley@biology.utah.edu; Silveira, Fernando A; Universidade Federal de Minas Gerais; fernando@mono.icb.ufmg.br. Changes in flower-visiting insect populations or communities that result from human impacts can be documented by measuring spatial or temporal trends, or by comparing abundance or species composition before and after disturbance. The level of naturally occurring variation in populations and communities over space and time will dictate the sampling effort required to detect human-induced changes. We compiled a set of existing surveys of the bee faunas of natural communities from around the world to examine patterns of abundance and richness. We focused on a subset of these studies to illustrate variation in bee communities among different sites and within sites over different spatial and temporal scales. We used examples from our compilation and other... Tipo: Peer-Reviewed Reports Palavras-chave: Apiformes; Apoidea; Faunal surveys; Flower-visiting insects; Functional groups; Monitoring long-term changes; Sampling protocol; Solitary bees; Species composition; Species richness; Worldwide bee faunas. Ano: 2001 Registros recuperados: 3 Primeira ... 1 ... Última

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