Journal
MOLECULAR ECOLOGY
Volume 21, Issue 24, Pages 5955-5968Publisher
WILEY
DOI: 10.1111/mec.12056
Keywords
density dependence; global change; plant genetic resources; plant mating systems; revegetation
Funding
- Australian Research Council Linkage project [LP110200805]
- South Australian Premier's Science and Research Fund
- Native Vegetation Council of South Australia [09/10/27]
- Nature Foundation SA Inc.
- Australian Geographic Society
- Biological Society of South Australia
- Field Naturalist Society of South Australia
- Wildlife Preservation Society of Australia
- NCCARF
- EIPR scholarship at the University of Adelaide
- Australian Research Council [LP110200805] Funding Source: Australian Research Council
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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.
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