Influência da riqueza de espécies de plantas que compõem a serapilheira sobre a comunidade de artrópodes e o funcionamento dos ecossistemas

• Autor(a) principal: Pereira, Alice Silva
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3914
• topic: Biodiversidade; Funcionamento de ecossistemas; Artrópodes; Decomposição; Biodiversity; Ecosystems functioning; Arthropods; Decomposition; CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMAS

With the increasing species loss, a new question emerged on the rule of biodiversity on ecosystem functioning. Thus, this work aimed evaluate if litter species richness affects positively decomposition and nutrient release rates and if this relationship is made by increasing arthropods abundance and/or species richness separated or no into the guilds fungivores, detritivores and predators. So, it was verified the effects of plant richness and composition on arthropods composition. The increase of plant species richness leaded to increase of decomposition and nitrogen, phosphorus, calcium and carbon rates. Furthermore, it leaded to increase arthropods abundance at all and of the fungivores guild and this increase leaded to increased decomposition rate. Arthropods composition didn’t differed between samples with different plant species richness, but there was an increase on arthropods composition similarity with the increasing plant composition similarity. These results indicate that plant species richness affects decomposition and nutrient release and that relation is made by the increasing arthropods abundance, mainly fungivores. Fungivores affect decomposition on a positive way. Besides, arthropods seem to be selective, since different species are related to different plant species.