Patterns and causes of observed piñon pine mortality in the southwestern United States.

Autor: Meddens AJH; Department of Geography, University of Idaho, Moscow, ID, 83844-3021, USA., Hicke JA; Department of Geography, University of Idaho, Moscow, ID, 83844-3021, USA., Macalady AK; School of Geography and Development and Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ, 85721-0076, USA., Buotte PC; Department of Geography, University of Idaho, Moscow, ID, 83844-3021, USA., Cowles TR; Department of Geography, University of Idaho, Moscow, ID, 83844-3021, USA., Allen CD; US Geological Survey, Fort Collins Science Center, Jemez Mountains Field Station, Los Alamos, NM, 87544, USA.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2015 Apr; Vol. 206 (1), pp. 91-97. Date of Electronic Publication: 2014 Dec 15.
DOI: 10.1111/nph.13193
Abstrakt: Recently, widespread piñon pine die-off occurred in the southwestern United States. Here we synthesize observational studies of this event and compare findings to expected relationships with biotic and abiotic factors. Agreement exists on the occurrence of drought, presence of bark beetles and increased mortality of larger trees. However, studies disagree about the influences of stem density, elevation and other factors, perhaps related to study design, location and impact of extreme drought. Detailed information about bark beetles is seldom reported and their role is poorly understood. Our analysis reveals substantial limits to our knowledge regarding the processes that produce mortality patterns across space and time, indicating a poor ability to forecast mortality in response to expected increases in future droughts.
(No claim to original US Government works New Phytologist © 2014 New Phytologist Trust.)
Databáze: MEDLINE
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