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

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...

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Main Authors: BRUNO V.B. RODRIGUES, MANOEL B. AGUIAR-NETO, UBIRAJARA DE OLIVEIRA, ADALBERTO J. SANTOS, ANTONIO D. BRESCOVIT, MARLÚCIA B. MARTÍNS, ALEXANDRE B. BONALDO
Format: Article
Language:English
Published: Academia Brasileira de Ciências 2017-08-01
Series:Anais da Academia Brasileira de Ciências
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005018101&lng=en&tlng=en
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author BRUNO V.B. RODRIGUES
MANOEL B. AGUIAR-NETO
UBIRAJARA DE OLIVEIRA
ADALBERTO J. SANTOS
ANTONIO D. BRESCOVIT
MARLÚCIA B. MARTÍNS
ALEXANDRE B. BONALDO
author_facet BRUNO V.B. RODRIGUES
MANOEL B. AGUIAR-NETO
UBIRAJARA DE OLIVEIRA
ADALBERTO J. SANTOS
ANTONIO D. BRESCOVIT
MARLÚCIA B. MARTÍNS
ALEXANDRE B. BONALDO
author_sort BRUNO V.B. RODRIGUES
collection DOAJ
description 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.
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spelling doaj.art-d111be1e75ed4225acc9f0b347ab66a02022-12-22T03:16:41ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902017-08-01010.1590/0001-3765201720150378S0001-37652017005018101Spider species richness and sampling effort at Cracraft´S Belém Area of EndemismBRUNO V.B. RODRIGUESMANOEL B. AGUIAR-NETOUBIRAJARA DE OLIVEIRAADALBERTO J. SANTOSANTONIO D. BRESCOVITMARLÚCIA B. MARTÍNSALEXANDRE B. BONALDOABSTRACT 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005018101&lng=en&tlng=enAmazonaraneaediversityfragmentation
spellingShingle BRUNO V.B. RODRIGUES
MANOEL B. AGUIAR-NETO
UBIRAJARA DE OLIVEIRA
ADALBERTO J. SANTOS
ANTONIO D. BRESCOVIT
MARLÚCIA B. MARTÍNS
ALEXANDRE B. BONALDO
Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
Anais da Academia Brasileira de Ciências
Amazon
araneae
diversity
fragmentation
title Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
title_full Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
title_fullStr Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
title_full_unstemmed Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
title_short Spider species richness and sampling effort at Cracraft´S Belém Area of Endemism
title_sort spider species richness and sampling effort at cracraft´s belem area of endemism
topic Amazon
araneae
diversity
fragmentation
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005018101&lng=en&tlng=en
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