Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism



Document title: Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000412250
ISSN: 0001-3765
Authors: 1
2
3
3
1
2
2
Institutions: 1Instituto Butantan, Laboratorio Especial de Colecoes Zoologicas, Sao Paulo. Brasil
2Museu Paraense Emilio Goeldi, Coordenacao de Zoologia, Belem, Para. Brasil
3Universidade Federal de Minas Gerais, Instituto de Ciencias Biologicas, Belo Horizonte, Minas Gerais. Brasil
Year:
Season: Sep
Volumen: 89
Number: 3
Pages: 1543-1554
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract A list of spider species is presented for the Belém Area of Endemism, the most threatened region in the Amazon Basin, comprising portions of eastern State of Pará and western State of Maranhão, Brazil. The data are based both on records from the taxonomic and biodiversity survey literature and on scientific collection databases. A total of 319 identified species were recorded, with 318 occurring in Pará and only 22 in Maranhão. About 80% of species are recorded at the vicinities of the city of Belém, indicating that sampling effort have been strongly biased. To identify potentially high-diversity areas, discounting the effect of variations in sampling effort, the residues of a linear regression between the number of records and number of species mapped in each 0.25°grid cells were analyzed. One grid, representing the Alto Turiaçu Indigenous land, had the highest deviation from the expected from the linear regression, indicating high expected species richness. Several other grid cells showed intermediate values of the regression residuals, indicating species richness moderately above to the expected from the model
Disciplines: Biología
Keyword: Ecología,
Quelicerados,
Arañas,
Biodiversidad,
Distribución geográfica,
Endemismo,
Fragmentación del hábitat,
Araneae,
Amazonas
Keyword: Biology,
Chelicerata,
Ecology,
Spiders,
Biodiversity,
Geographical distribution,
Endemism,
Habitat fragmentation,
Araneae,
Amazon
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