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Type: Journal article
Title: Pollen diversity matters: revealing the neglected effect of pollen diversity on fitness in fragmented landscapes
Author: Breed, M.
Marklund, M.
Ottewell, K.
Gardner, M.
Harris, J.
Lowe, A.
Citation: Molecular Ecology, 2012; 21(24):5955-5968
Publisher: Blackwell Publishing Ltd
Issue Date: 2012
ISSN: 0962-1083
Statement of
Martin F. Breed, Maria H. K. Marklund, Kym M. Ottewell, Michael G. Gardner, J. Berton C. Harris and Andrew J. Lowe
Abstract: Few studies have documented the impacts of habitat fragmentation on plant mating patterns together with fitness. Yet, these processes require urgent attention to better understand the impact of contemporary landscape change on biodiversity and for guiding native plant genetic resource management. We examined these relationships using the predominantly insect-pollinated Eucalyptus socialis. Progeny were collected from trees located in three increasingly disturbed landscapes in southern Australia and were planted out in common garden experiments. We show that individual mating patterns were increasingly impacted by lower conspecific density caused by habitat fragmentation. We determined that reduced pollen diversity probably has effects over and above those of inbreeding on progeny fitness. This provides an alternative mechanistic explanation for the indirect density dependence often inferred between conspecific density and offspring fitness.
Keywords: density dependence; global change; plant genetic resources; plant mating systems; revegetation
Rights: © 2012 Blackwell Publishing Ltd
RMID: 0020123459
DOI: 10.1111/mec.12056
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute Leaders publications
Environment Institute publications

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