Vegetation Pattern Modulates Ground Arthropod Diversity in Semi-Arid Mediterranean Steppes

Autor(es)

Meloni, Fernando ^{[1, 2, 3, 4]} ; Civieta, Berta F. ^{[2, 3]} ; Zaragoza, Juan A. ^{[2, 3]} ; Lourdes Moraza, Maria ^[5] ; Bautista, Susana ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Natl Inst Sci & Technol Complex Syst, BR-22290180 Rio De Janeiro - Brazil

^[2] Univ Alicante, Dept Ecol, E-03690 Alicante - Spain

^[3] Univ Alicante, IMEM, E-03690 Alicante - Spain

^[4] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Fis, BR-14040901 Ribeirao Preto - Brazil

^[5] Univ Navarra, Dept Environm Biol, E-31080 Pamplona - Spain

• Tipo de documento: Artigo Científico
• Fonte: INSECTS; v. 11, n. 1 JAN 2020.
• Citações Web of Science: 1

Resumo

The ecological functioning of dryland ecosystems is closely related to the spatial pattern of the vegetation, which is typically structured in patches. Ground arthropods mediate key soil functions and ecological processes, yet little is known about the influence of dryland vegetation pattern on their abundance and diversity. Here, we investigate how patch size and cover, and distance between patches relate to the abundance and diversity of meso-and microarthropods in semi-arid steppes. We found that species richness and abundance of ground arthropods exponentially increase with vegetation cover, patch size, and patch closeness. The communities under vegetation patches mainly respond to patch size, while the communities in the bare-soil interpatches are mostly controlled by the average distance between patches, independently of the concurrent changes in vegetation cover. Large patches seem to play a critical role as reserve and source of ground arthropod diversity. Our results suggest that decreasing vegetation cover and/or changes in vegetation pattern towards small and over-dispersed vegetation patches can fast lead to a significant loss of ground arthropods diversity in drylands. (AU)

• Processo FAPESP: 13/06196-4 - Estudo da comunidade edáfico-epígea como um sistema complexo e auto-organizado
• Beneficiário: Fernando Meloni
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/00631-3 - Padrões gerais de organização da comunidade edáfico-epígea e avaliação do seu potencial indicador na prevenção dos eventos catastróficos em ecossistemas mediterrâneos sujeitos à desertificação
• Beneficiário: Fernando Meloni
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado