Microhabitat selectivity underpins regional indicators of fish abundance and replenishment

C.J. Fulton, M.N. Noble, Ben Radford, C. Gallen, D. Harasti

Research output: Contribution to journalArticle

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Abstract

© 2016 Elsevier Ltd. All rights reserved.Species with specialized resource use can display strong spatial heterogeneity in abundance according to the availability of their preferred habitats. If these preferences shift with ontogeny, then a wide range of habitats may need to be protected in order to support both adult populations and their replenishment. We explored whether microhabitat selectivity interacts with habitat availability to provide an effective suite of indicators for regional fish abundance and replenishment, using offshore rocky reefs in south-eastern Australia as a case study. We examined generalized additive mixed models (GAMMs) in a full subsets approach to infer the best predictors for adult and juvenile fish density in four diverse families (Labridae, Odacidae, Pomacentridae, Serranidae), based on rapid underwater visual surveys across transects (∼500 m2), wave exposures (0.3-1 km), and sites (0.3-48 km). We then examined whether these regional fish-habitat models aligned with the microhabitat electivity of individuals (at scale of
LanguageEnglish
Pages222-231
JournalECOLOGICAL INDICATORS
Volume70
DOIs
StatePublished - 2016

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microhabitat
microhabitats
habitat
fish
habitats
habitat availability
ontogeny
resource use
Serranidae
Labridae
Pomacentridae
reef
transect
reefs
case studies
indicator
Replenishment
Selectivity
Habitat
Fish

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Fulton, C.J. ; Noble, M.N. ; Radford, Ben ; Gallen, C. ; Harasti, D./ Microhabitat selectivity underpins regional indicators of fish abundance and replenishment. In: ECOLOGICAL INDICATORS. 2016 ; Vol. 70. pp. 222-231
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Microhabitat selectivity underpins regional indicators of fish abundance and replenishment. / Fulton, C.J.; Noble, M.N.; Radford, Ben; Gallen, C.; Harasti, D.

In: ECOLOGICAL INDICATORS, Vol. 70, 2016, p. 222-231.

Research output: Contribution to journalArticle

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