Relative effects of environmental variation and fishing on the demography and ecology of tropical wrasses

Lowe, Jake R. (2020) Relative effects of environmental variation and fishing on the demography and ecology of tropical wrasses. PhD thesis, James Cook University.

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View at Publisher Website: https://doi.org/10.25903/nq18-qr71
 
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Abstract

One of the greatest challenges faced by fishery managers and ecologists is determining the degree to which natural variation in population dynamics (i.e., species abundance and life history traits) are modified by fishing. Multiscale sampling that encompasses temporal and spatial variation in anthropogenic and environmental factors are key to understanding mechanisms that drive population dynamics. To date, our understanding of these processes has been hindered by a lack of spatially explicit demographic information for many fishery targeted species. This is particularly true for multi-species, Indo-Pacific coral reef fisheries that are under increasing levels of exploitation. For example, across Indo-Pacific reefs, large-bodied wrasses are common components of reef fish assemblages and are exposed to increasing levels of exploitation, yet little is known regarding their life histories or drivers of population variability. This thesis was designed to assess the relative effects of environmental variation and fishery exploitation on the demography and ecology of tropical wrasses both spatially and temporally, to determine patterns of demographic variation and population drivers among and within species.

Item ID: 68724
Item Type: Thesis (PhD)
Keywords: wrasse; demography; life history; Labridae; Philippines; Great Barrier Reef; fishing; marine reserves; reef fish
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Copyright Information: Copyright © 2020 Jake R. Lowe.
Additional Information:

Two publications arising from this thesis are stored in ResearchOnline@JCU, at the time of processing. Please see the Related URLs. The publications are:

Chapter 2: Lowe, J.R., Williamson, D.H., Ceccarelli, D.M., Evans, R.D., and Russ, G.R. (2019) Responses of coral reef wrasse assemblages to disturbance and marine reserve protection on the Great Barrier Reef. Marine Biology, 166 (9). 119.

Chapter 3: Lowe, J. R., Williamson, D. H., Ceccarelli, D. M., Evans, R. D., and Russ, G. R. (2020) Environmental disturbance events drive declines in juvenile wrasse biomass on inshore coral reefs of the Great Barrier Reef. Environmental Biology of Fishes, 103. pp. 1279-1293.

Date Deposited: 27 Jul 2021 04:17
FoR Codes: 31 BIOLOGICAL SCIENCES > 3103 Ecology > 310305 Marine and estuarine ecology (incl. marine ichthyology) @ 50%
31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310408 Life histories @ 50%
SEO Codes: 10 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 1003 Fisheries - wild caught > 100305 Wild caught fin fish (excl. tuna) @ 30%
28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280102 Expanding knowledge in the biological sciences @ 50%
18 ENVIRONMENTAL MANAGEMENT > 1805 Marine systems and management > 180599 Marine systems and management not elsewhere classified @ 20%
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