Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Floristic and structural variation of weeds in eucalyptus plantations as influenced by relief and time of year Planta Daninha
Tuffi Santos,L.D.; Cardoso Filho,O.; Santos Júnior,A.; Sant'Anna-Santos,B.F.; Felix,R.C.; Leite,F.P..
The objective of this work was to analyze the floristic variation and phytosociological structure of weeds as influenced by relief and time of year in eucalyptus plantations in Santana do Paraíso and Guanhães - MG. The total area sampled for each locality was approximately 10 ± 3 hectares, comprising three types of relief: lowland, slope, and upper area. In each type of relief, 10 plots of 1 m² were sampled, corresponding to 30 plots per locality, where they were randomly allocated in a zigzag. The taxonomic identification was performed in four assessments, corresponding to the months of November and March, comprising two ratings each season, always at the same points, and geo-referenced using the Global Positioning System (GPS). A total of 3,893...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Dynamics; Phytosociology; Ecological adaptation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300001
Imagem não selecionada

Imprime registro no formato completo
Responses and adaptations of collembolan communities (Hexapoda: Collembola) to flooding and hypoxic conditions. Repositório Alice
MARX, M. T.; WILD, A.-K.; KNOLLMANN, U.; KAMP, G.; WEGENER, G.; EISENBEIS, G..
Abstract ? Standard ecological methods (pitfall traps, trunk eclectors and soil cores) were used to evaluate collembolan community responses to different flooding intensities. Three sites of a floodplain habitat near Mainz, Germany, with different flooding regimes were investigated. The structures of collembolan communities are markedly different depending on flooding intensity. Sites more affected by flooding are dominated by hygrophilic and hygrotolerant species, whereas the hardwood floodplain is dominated by mesophilic species. The survival strategies of the hygrophilic and hygrotolerant species include egg diapause and passive drifting. The physiological adaptations to hypoxic conditions of several collembolan species were analyzed using a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Behavioral adaptation; Ecological adaptation; Egg diapause; Inundation; Morphological adaptation; Physiological adaptation.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/660991
Imagem não selecionada

Imprime registro no formato completo
Responses and adaptations of collembolan communities (Hexapoda: Collembola) to flooding and hypoxic conditions PAB
Marx,Michael Thomas; Wild,Anna-Katharina; Knollmann,Ulrich; Kamp,Günter; Wegener,Gerhard; Eisenbeis,Gerhard.
Standard ecological methods (pitfall traps, trunk eclectors and soil cores) were used to evaluate collembolan community responses to different flooding intensities. Three sites of a floodplain habitat near Mainz, Germany, with different flooding regimes were investigated. The structures of collembolan communities are markedly different depending on flooding intensity. Sites more affected by flooding are dominated by hygrophilic and hygrotolerant species, whereas the hardwood floodplain is dominated by mesophilic species. The survival strategies of the hygrophilic and hygrotolerant species include egg diapause and passive drifting. The physiological adaptations to hypoxic conditions of several collembolan species were analyzed using a microcalorimeter. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavioral adaptation; Ecological adaptation; Egg diapause; Inundation; Morphological adaptation; Physiological adaptation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800032
Imagem não selecionada

Imprime registro no formato completo
Two castes sizes of leafcutter ants in task partitioning in foraging activity Ciência Rural
Toledo,Marcelo Arruda de; Ribeiro,Pedro Leite; Carrossoni,Priscilla Shiota Fedichina; Tomotani,João Vitor; Hoffman,Ashley Nicole; Klebaner,Daniella; Watel,Halee Rachel; Iannini,Carlos Arturo Navas; Helene,André Frazão.
ABSTRACT: Task partitioning in eusocial animals is most likely an evolutionary adaptation that optimizes the efficiency of the colony to grow and reproduce. It was investigated indirect task partitioning in two castes sizes; this involves task partitioning in which the material transported is not transferred directly from one individual to another, but where it is dropped by one ant to be picked up by another. In two separate approaches, it was confirmed previous results pertaining to leaf caching activities among Atta colombica with task partitioning activities involving leaf dropping among Atta sexdens rubropilosa , in which there is a correlation between the size of an individual ant and the leaf fragment it transports. It was also suggested that this...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atta; Ant behavior; Leaf cutting; Ecological adaptation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101902
Registros recuperados: 4
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional