New policies for old trees: averting a global crisis in a keystone ecological structure

Lindenmayer, David B., Laurance, William F., Franklin, Jerry F., Likens, Gene E., Banks, Sam C., Blanchard, Wade, Gibbons, Philip, Ikin, Karen, Blair, David, McBurney, Lachlan, Manning, Adrian D., and Stein, John A.R. (2014) New policies for old trees: averting a global crisis in a keystone ecological structure. Conservation Letters, 7 (1). pp. 61-69.

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Abstract

Large old trees are critical organisms and ecological structures in forests, woodlands, savannas, and agricultural and urban environments. They play many essential ecological roles ranging from the storage of large amounts of carbon to the provision of key habitats for wildlife. Some of these roles cannot be replaced by other structures. Large old trees are disproportionately vulnerable to loss in many ecosystems worldwide as a result of accelerated rates of mortality, impaired recruitment, or both. Drivers of loss, such as the combined impacts of fire and browsing by domestic or native herbivores, chemical spray drift in agricultural environments, and postdisturbance salvage logging, are often unique to large old trees but also represent ecosystem-specific threats. Here, we argue that new policies and practices are urgently needed to conserve existing large old trees and restore ecologically effective and viable populations of such trees by managing trees and forests on much longer time scales than is currently practiced, and by protecting places where they are most likely to develop. Without these steps, large old trees will vanish from many ecosystems, and associated biota and ecosystem functions will be severely diminished or lost.

Item ID: 32924
Item Type: Article (Research - C1)
ISSN: 1755-263X
Keywords: biodiversity loss, disrupted ecosystem processes, large old trees, threatening processes, tree mortality, tree recruitment
Funders: Australian Research Council (ARC), National Environmental Research Program, Victorian Department of Sustainability and Environment, Parks Victoria
Date Deposited: 30 Apr 2014 09:21
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960899 Flora, Fauna and Biodiversity of Environments not elsewhere classified @ 100%
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