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| Corrêa,Michele M.; Bieber,Ana G.D.; Wirth,Rainer; Leal,Inara R.. |
| Atta cephalotes (L.) presents a wide distribution in the Neotropical region. In Brazil, this species is disjunctly distributed in the Amazon region and in the states of Maranhão, Pernambuco and southern Bahia, all of which belong to Northeast Region. Here we report on a survey of Atta colonies in 42 remnants of the Atlantic rainforest in Alagoas and Pernambuco. Our results include new records of A. cephalotes in the state of Alagoas and thereby extend the known distribution area of its southern populations in Northeast Brazil. In addition, the species was strongly associated with well-conserved forest remnants, indicating that it is highly sensitive to disturbance. We suggest that, in the fragmented scenario of the northeastern Atlantic forest, A.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Atlantic Forest; Disjunct distribution; Leaf-cutting ant; New record; Species replacement; Disturbance sensitive taxon. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000400023 |
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| Barbosa,Veralucia S.; Leal,Inara R.; Iannuzzi,Luciana; Almeida-Cortez,Jarcilene. |
| In this study we selected three habitats that correspond to a light gradient, and consequently a proportion of pioneer plant species gradient edges, trails and forest core and described their herbivorous insect assemblage. We tested five hypothesis about the herbivorous assemblage: (1) there is a different distribution of abundance and richness of order between habitats, (2) species similarity between habitats is smaller than within habitat, (3) in forest edge the herbivores are more abundant than in trails and interior of the forest, (4) in nuclear areas herbivore richness and diversity are higher than in the trails and edge, and (5) the abundance and richness of herbivores are different between seasons. Herbivorous were sampled during November 2000 - May... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragmentation; Herbivorous insect assemblage; Herbivory; Insect diversity; Plant defense; Plant-insect interaction. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500001 |
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| Corrêa,Michele M.; Fernandes,Wedson D.; Leal,Inara R.. |
| A riqueza de formigas de capões do Pantanal brasileiro foi amostrada e relacionada com a complexidade estrutural das áreas. As formigas foram coletadas com armadilhas de solo do tipo pitfall em 28 capões na Fazenda Rio Negro, Município de Aquidauana, MS. A complexidade estrutural dos capões foi avaliada através de estimativa da densidade da vegetação e da espessura da serapilheira próximo às armadilhas. Setenta e uma espécies foram encontradas, pertencentes a 26 gêneros e sete subfamílias, das quais Ectatomma edentatum Roger (Formicidae: Ectatomminae) e uma espécie de Pheidole foram as mais freqüentes. Somente foi encontrada relação positiva entre a riqueza da comunidade de formigas e a densidade da vegetação herbácea, corroborando a idéia de que a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Armadilha pitfall; Serapilheira. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000600002 |
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