Affiliation:
1. Department of Biological Sciences, National University of Singapore , Singapore 117558 , Singapore
2. School of BioSciences, The University of Melbourne , Parkville, Victoria 3010 , Australia
Abstract
ABSTRACT
Increasing coastal development and global warming have resulted in large-scale habitat changes, with artificial coastal structures replacing extensive tracts of natural shores. In Singapore, for example, more than 63% of the natural coastline has been replaced by seawalls. Multiple studies from both temperate and tropical regions have compared species diversity supported by these artificial structures with natural rocky shores. Few, however, have estimated and compared the population size and movement of common intertidal species between these two habitat types. Using mark–recapture techniques, this study investigated: (1) the population size of three common gastropod genera (Nerita spp., Trochus spp. and Turbo spp.) and (2) differences in displacement of Nerita spp. and Trochus spp., two common species found on natural rocky shores and seawalls in Singapore. The results of our mark–recapture surveys indicated that seawalls supported large densities of Nerita spp.—more than 50 times greater than that on adjacent rocky shores. The mark–recapture data also revealed that movement of the gastropod species differed between the two habitats, with individuals on seawalls generally travelling longer distances.
Funder
National Research Foundation
Publisher
Oxford University Press (OUP)
Reference87 articles.
1. Application of mark–recapture models to estimation of the population size of plants;ALEXANDER;Ecology,1997
2. The effects of movement on population density estimates of mudflat epifauna;BARNES;Journal of the Marine Biological Association of the United Kingdom,1998
3. Animal movements in heterogeneous landscapes: identifying profitable places and homogeneous movement bouts;BARRAQUAND;Ecology,2008
4. MuMIn: multi-model inference;BARTOŃ,2013
5. Scales of variation in the effects of limpets on rocky shores in the northwest Mediterranean;BENEDETTI-CECCHI;Marine Ecology Progress Series,2001
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献