Data/hora: 08/06/2024 11:36:26

Provedor de dados: 	Gayana Botánica	
País: 	Chile	
Título: 	THE ALPINE LIFE ZONE UNDER GLOBAL CHANGE	
Autores: 	Körner,Christian.	
Data: 	2000-01-01	
Ano: 	2000	
Palavras-chave: 	Altitude; Biodiversity; Climate; Conservation; Grazing; High elevation; Land use; Mountain.	
Resumo: 	Nearly forty percent of mankind depend in one way or another on mountain ecosystems. Local ecosystem services are slope stability, water yield, agricultural products or recreational value. Continental scale influences include drinking water supply, ground water recharging, irrigation water, hydroelectric power, flood control, traffic routes etc. In this paper I review evidence of alpine ecosystem responses to global change. It is emphasized that soil conservation is the centerpiece of any consideration of sustainable land use in alpine terrain. Complete vegetation cover of high biological diversity is essential to protect soils and secure `ecosystem services' in upland systems. It is illustrated that this is not necessarily in conflict with land use and that land use may even contribute to biological richness if appropriate management is adopted. Atmospheric influences such as increased nitrogen deposition, elevated CO2 and climate warming induce subtle changes in alpine vegetation, the understanding of which requires experimental concepts which account for long term acclimation and organismic interaction. It is proposed that comparative approaches which cover interspecific variability and natural environmental gradients are most promising.	
Tipo: 	Journal article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432000000100001	
Editor: 	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción	
Formato: 	text/html	
Fonte: 	Gayana. Botánica  v.57 n.1 2000