Conserving large carnivores: dollars and fence.
Ecol Lett
; 16(5): 635-41, 2013 May.
Article
em En
| MEDLINE
| ID: mdl-23461543
ABSTRACT
Conservationists often advocate for landscape approaches to wildlife management while others argue for physical separation between protected species and human communities, but direct empirical comparisons of these alternatives are scarce. We relate African lion population densities and population trends to contrasting management practices across 42 sites in 11 countries. Lion populations in fenced reserves are significantly closer to their estimated carrying capacities than unfenced populations. Whereas fenced reserves can maintain lions at 80% of their potential densities on annual management budgets of $500 km(-2) , unfenced populations require budgets in excess of $2000 km(-2) to attain half their potential densities. Lions in fenced reserves are primarily limited by density dependence, but lions in unfenced reserves are highly sensitive to human population densities in surrounding communities, and unfenced populations are frequently subjected to density-independent factors. Nearly half the unfenced lion populations may decline to near extinction over the next 20-40 years.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Carnívoros
/
Densidade Demográfica
/
Conservação dos Recursos Naturais
/
Leões
Limite:
Animals
/
Humans
País/Região como assunto:
Africa
Idioma:
En
Revista:
Ecol Lett
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Estados Unidos