Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/7516
Title: Population demography and fecundity do not decline with habitat fragmentation in the rainforest tree 'Macadamia integrifolia' (Proteaceae)
Contributor(s): Neal, Jodie (author); Hardner, Craig (author); Gross, Caroline L  (author)orcid 
Publication Date: 2010
DOI: 10.1016/j.biocon.2010.06.029
Handle Link: https://hdl.handle.net/1959.11/7516
Abstract: Habitat fragmentation is often associated with reduced levels of fitness and local extinction of plant species, and consequently poses a major threat to the persistence of species worldwide. The majority of demography-based fragmentation studies to date have focussed primarily on fragmentation impacts on individual plant fecundity. Here we investigate the impact of habitat fragmentation on the demography (plant height classes and density) and key population dynamic processes for the rainforest tree species 'Macadamia integrifolia' (Proteaceae). Raceme and fruit production and seedling emergence across fragmented sites exceeded that in more intact sites with no apparent difference in short-term mortality rates. Fecundity of flowering trees did not appear to be affected by fragmentation. Instead, overall reproductive output in fragmented sites was enhanced relative to undisturbed sites due to a higher proportion of reproductively active individuals. The probability of flowering and fruiting was negatively correlated with the projected foliage cover (PFC) surrounding individual trees, and average PFC was significantly lower in small and medium fragments, suggesting light availability as a potential contributor to the trends observed here. This study demonstrates that the short-term effects of habitat fragmentation on population viability may not necessarily be detrimental for some species, and highlights the importance of assessing not only the fecundity of flowering individuals but also the proportion of individuals reproducing within fragments.
Publication Type: Journal Article
Source of Publication: Biological Conservation, 143(11), p. 2591-2600
Publisher: Elsevier BV
Place of Publication: The Netherlands
ISSN: 0006-3207
1873-2917
Field of Research (FOR): 050202 Conservation and Biodiversity
Socio-Economic Outcome Codes: 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Statistics to Oct 2018: Visitors: 189
Views: 190
Downloads: 0
Appears in Collections:Journal Article

Files in This Item:
3 files
File Description SizeFormat 
Show full item record

SCOPUSTM   
Citations

18
checked on Nov 30, 2018

Page view(s)

78
checked on Feb 8, 2019
Google Media

Google ScholarTM

Check

Altmetric


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.