Cited by 157Coral and Marine Ecosystems StudiesGenetic diversity and population structureMarine Biology and Ecology Research

Ecologically relevant dispersal of corals on isolated reefs: implications for managing resilience

Underwood, Jim N., Smith, Luke D., Oppen, Madeleine J. H. van, Gilmour, James P.·2009·Ecological Applications

Abstract

Coral reefs are in decline worldwide, and marine reserve networks have been advocated as a powerful management tool for maximizing the resilience of coral communities to an increasing variety, number, and severity of disturbances. However, the effective design of reserves must account for the spatial scales of larval dispersal that affect the demography of communities over ecological time frames. Ecologically relevant distances of dispersal were inferred from DNA microsatellite data in a broadcast‐spawning (Acropora tenuis) and a brooding (Seriatopora hystrix) coral at isolated reef systems off northwest Australia. Congruent with expectations based on life histories, levels of genetic subdivision among populations were markedly higher in the brooder than in the broadcast spawner. Additionally, significant subdivision for both species between systems (>100 km), and between (>10 km) or within reefs (<10 km) within systems, indicated that many reefs or reef patches are demographically independent. There was also a clear distinction in the scale of genetic structure between the different systems; at the more geographically complex of the systems, a much finer scale structure was detected in both species. This suggested that the hydrodynamics associated with these complex reefs restrict distances regularly traveled by larvae. The primary implication is that short‐term recovery of these coral communities after severe disturbance requires the input of larvae from viable communities kilometers to a few tens of kilometers away. Therefore, to be self‐sustaining, we suggest that coral reef protected areas need to be large enough to encompass these routine dispersal distances. Further, to facilitate recovery from severe disturbances, protected areas need to be replicated over these spatial scales. However, specific designs also need to account for size, complexity, and isolation of reefs, which will either restrict or enhance dispersal within this range.

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Crossref · 10.1890/07-1461.1

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  • The strong genetic population structure found in this study is congruent with findings for the same species in Australia and Japan, and for other brooding corals with a similarly short pelagic larval duration.

    “The strong genetic population structure in this study is congruent with findings for the same species from other biogeographic regions such as Australia (van Oppen et al. 2008;Underwood et al. 2009) and Japan (Nakajima et al. 2017), as well as for other brooding corals with a similarly short PLD.”
  • S. hystrix on the Great Barrier Reef and in northern Western Australia shows comparable differentiation (mean FST = 0.20 over about 500 km), including isolation-by-distance (overall FST = 0.198 over about 505 km).

    “Comparable levels of differentiation were found for S. hystrix on the Great Barrier Reef and in northern Western Australia (mean F ST = 0.20 ∼500 km, van Oppen et al. 2008), including isolation-by-distance (overall F ST = 0.198 ∼505 km, Underwood et al. 2009).”

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Authors
Underwood, J. N., Smith, L. D., Oppen, M. J. H. V., & Gilmour, J. P.
Affiliations
  • The University of Western Australia (AU)
  • Australian Institute of Marine Science (AU)
Corresponding author
Underwood, Jim N.
Venue
Ecological Applications
Publisher
Wiley
Published
2009-01
Volume
19
Issue
1
Pages
18-29
ISSN
  • 1051-0761 (ISSN-L)
  • 1939-5582
OpenAlex
W2112535325
Cited by
157
References
80
Citations by year
2026: 3 · 2025: 3 · 2024: 10 · 2023: 7 · 2022: 8 · 2021: 8 · 2020: 7 · 2019: 10 · 2018: 8 · 2017: 6 · 2016: 11 · 2015: 10 · 2014: 11 · 2013: 12 · 2012: 14
FWCI
11.94
Type
journal article
Language
en
Open access
closed
Locations
  • Ecological Applications (publishedVersion)
  • PubMed (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Coral and Marine Ecosystems Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
Keywords
coral larval dispersal, coral reef resilience, marine protected area design, genetic subdivision, Acropora tenuis, Seriatopora hystrix, broadcast spawning, brooding corals, population structure, reef hydrodynamics, disturbance recovery
MeSH terms
Adaptation, Physiological, Animals, Demography, Genotype, Reproduction, Genetic Variation, Ecosystem, Anthozoa

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