Data/hora: 16/06/2024 04:06:19

Provedor de dados: | 76
País: | Brazil
Título: | Spider community responds to litter complexity: insights from a small-scale experiment in an exotic pine stand
Autores: | Podgaiski,Luciana R.; Rodrigues,Gilberto G.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Habitat complexity; Habitat selection; Species diversity; Foraging strategy.
Resumo: | ABSTRACT Conservation of biodiversity in agroecosystems is an urgent need, and a suitable approach to maximize animal biodiversity and their services is the restoration of habitat heterogeneity. Here we investigated the value of increasing litter complexity in tree plantations of exotic pine for ground spiders. We hypothesized that increasing the litter complexity of these systems, as it would be the case in ecologically designed plantations, would increase spider aggregations. We performed a small-scale litter manipulation experiment within an exotic pine stand in the municipality of Minas do Leão, Rio Grande do Sul, Brazil, and compared spider diversity in simple (only pine needles) and complex substrates (with the addition of diverse native broadleaves). We found 1,110 spiders, 19 families and 32 morphospecies. The most abundant families were Linyphiidae, Theridiidae and Salticidade, and the dominant morphospecies were Thymoites sp. 2 and Lygarina sp. Web-building spiders represented 61% of total spider abundance, and 17 species, while hunting spiders, 49% and 15 species. As expected, densities of spider individuals and species from both web-building and hunting spiders were higher in complex litter substrate. Potential preys (Collembola) also responded positively to the treatment, and had influence of spider community patterns. Our results suggest that ensuring some degree of plant and litter diversity within pine stands (e.g. understory establishment) might foster spider aggregations and possibly help to conserve their diversity at local-scales.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100207
Editor: | Museu de Ciências Naturais
Relação: | 10.1590/1678-4766e2017007
Formato: | text/html
Fonte: | Iheringia. Série Zoologia  v.107 2017
Fonte: | info:eu-repo/semantics/openAccess