RARITY IN NEOTROPICAL FOREST MAMMALS AND ITS ECOLOGICAL CORRELATES

被引：130

作者：

ARITA, HT

ROBINSON, JG

REDFORD, KH

机构：

[1] Department of Wildlife, Range Sciences School of Forest Resources, University of Florida Gainesville, Florida

[2] Department of Wildlife and Range Sciences, School of Forest Resources and Conservation, University of Florida, Gainesville, Florida

[3] Center for Latin American Studies, University of Florida Gainesville, Florida

来源：

CONSERVATION BIOLOGY | 1990年 / 4卷 / 02期

关键词：

D O I：

10.1111/j.1523-1739.1990.tb00107.x

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

Local density and size of distributional range have been used to characterize rarity, but conclusions are weakened by their possible lack of independence. The usefulness and validity of using these two variables were tested with data on distribution, local density, body size, and feeding habits for a set of 100 Neotropical forest mammals. In a bivariate plot of distributional range against local density, species clustered according to their trophic or taxonomic groups. This indicates that diet and phylogenetic history have an influence on rarity. A negative correlation was found between distribution and abundance. However this correlation was weaker within trophic or taxonomic groups, and vanished when body size was held constant. These results show that both distribution and abundance are valid and independent estimators of rarity when comparing species with similar sizes and ecological traits. Regression analysis showed that larger animals tend to have lower densities and wider distributional ranges. Rarity is clearly associated with body size. A dichotomous classification of rarity based on area of distribution and local density is suitable for Neotropical forest mammals. Species in each of four categories created by such a scheme require different conservation and management policies that are determined by the ecological characteristics of the species. Final conservation strategies must also be shaped by political and economic constraints. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：181 / 192

页数：12

共 56 条

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