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• Rev. Bras. Zool. 18 (3) • Set 2001 • https://doi.org/10.1590/S0101-81752001000300010   copiar

Efeitos da fragmentação florestal sobre vespas e abelhas solitárias na Amazônia Central. II. estratificação vertical

Effects of forest fragmentation on solitary wasps and bees in Central Amazonia. II. vertical stratification

Autoria SCIMAGO INSTITUTIONS RANKINGS

Resumo

The effects of forest fragmentation on the patterns of vertical abundance and richness of solitary wasp and bee communities was investigated near Manaus, Amazonas. Wasps and bees were trap-nested at 1,5, 8 and 15 m above the ground in continuous primary forestand isolated forest fragments. In general, the number of nests and species increased with height for both groups. In particular, bee species richness at 15 m was almost twice that at 1,5 mm. However, one species of Trypoxylon Latreille, 1796 (Sphecidae) consistently nested in the understorey. Thus, patterns of abundance and richness distributions indicated stratification. A contingency analysis showed that fragmentation altered stratification of nesting activity of the wasp community in fragments. However, a similar pattern was not found for the bees. These results are discussed with particular reference to prey and floral resources availability and microclimatic conditions.

Forest fragmentation; Amazonia; stratification; solitary wasps; solitary bees

Forest fragmentation; Amazonia; stratification; solitary wasps; solitary bees

Efeitos da fragmentação florestal sobre vespas e abelhas solitárias na Amazônia Central. II. estratificação vertical

Effects of forest fragmentation on solitary wasps and bees in Central Amazonia. II. vertical stratification

Elder Ferreira Morato

Departamento de Ciências da Natureza, Universidade Federal do Acre. 69915-900 Rio Branco, Acre, Brasil

ABSTRACT

The effects of forest fragmentation on the patterns of vertical abundance and richness of solitary wasp and bee communities was investigated near Manaus, Amazonas. Wasps and bees were trap-nested at 1,5, 8 and 15 m above the ground in continuous primary forestand isolated forest fragments. In general, the number of nests and species increased with height for both groups. In particular, bee species richness at 15 m was almost twice that at 1,5 mm. However, one species of Trypoxylon Latreille, 1796 (Sphecidae) consistently nested in the understorey. Thus, patterns of abundance and richness distributions indicated stratification. A contingency analysis showed that fragmentation altered stratification of nesting activity of the wasp community in fragments. However, a similar pattern was not found for the bees. These results are discussed with particular reference to prey and floral resources availability and microclimatic conditions.

Key words: Forest fragmentation, Amazonia, stratification, solitary wasps, solitary bees

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AGRADECIMENTOS. Ao Dr. Fernando A. Silveira (Universidade Federal de Minas Gerais) e Dr. Yves Basset (Smithsonian Tropical Research Institute) pela revisão do Abstract. Ao segundo, também pelas discussões sobre ecologia de dossel. Este estudo foi parcialmente financiado pelo Instituto Nacional de Pesquisas da Amazônia (INPA) e pelo Smithsonian Tropical Research lnstitute (STRI) e representa a publicação número 353 da série técnica do Projeto Dinâmica Biológica de fragmentos florestais.

Recebido em 19.X.2000; aceito em 18.VII.2001.

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Datas de Publicação

  • Publicação nesta coleção
    08 Maio 2009
  • Data do Fascículo
    Set 2001

Histórico

  • Recebido
    19 Out 2000
  • Aceito
    18 Jul 2001
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