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Fish and Fisheries - 2024 - Bradley - The fish mangrove link is context dependent Tidal regime and reef proximity9.51 MB
Published VersionCC BY-NC V4.0, Open Access
Journal article
The fish-mangrove link is context dependent: Tidal regime and reef proximity determine the ecological role of tropical mangroves
Fish and Fisheries, Vol.25(3), pp.523-541
2024
Abstract
Tropical mangroves are known to support fish production, but natural variability in the link between mangrove habitats and fish populations undermines our ability to manage, conserve and restore this ecological relationship. This is largely due to undefined context-dependence in the use of mangroves by fish. We collected a spatially extensive dataset of 494 mangrove fish assemblages using standardised Remote Underwater Video surveys of mangrove edge habitats from five environmentally heterogenous regions in the Indo-Pacific. We used machine learning methods to define contextual limits of the use of mangroves by reportedly mangrove-affiliated fish. We found that tidal range and proximity to coral reefs were the most important contextual predictors of the use of mangroves by most taxa. We established data-driven threshold values for important contextual predictors of the use of mangroves by fish, offering new insights into the variable role played by tropical mangroves in supporting fish life histories. Where mangroves occur as part of reef seascapes in regions with limited tidal range (<1.5 m), they appear to serve an important juvenile habitat function for a wide spectrum of reef fish. In regions with substantially larger tidal ranges, mangroves appear to only support certain reef species with coastal life histories. Coastal and estuary fish were able to use mangroves in a wide variety of non-reef contexts. We demonstrate that key thresholds in environmental context can govern the functional role of mangroves, with strong implications for the role of other habitats in coastal seascapes.
Details
- Title
- The fish-mangrove link is context dependent: Tidal regime and reef proximity determine the ecological role of tropical mangroves
- Authors
- Michael Bradley (Corresponding Author) - James Cook UniversityAlexia Dubuc - James Cook UniversityCamilla V. H. Piggott - The University of Western AustraliaKatie Sambrook - ARC Centre of Excellence for Coral Reef StudiesAndrew S. Hoey - ARC Centre of Excellence for Coral Reef StudiesMartial Depczynski - The University of Western AustraliaTim J. Langlois - The University of Western AustraliaMonica Gagliano - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringShaun K. Wilson - The University of Western AustraliaKatherine Cure - Australian Institute of Marine ScienceThomas H. Holmes - The University of Western AustraliaGlenn I. Moore - Western Australian MuseumMichael Travers - Department of Primary Industries and Regional DevelopmentRonald Baker - University of South AlabamaIvan Nagelkerken - The University of AdelaideMarcus Sheaves - James Cook University
- Publication details
- Fish and Fisheries, Vol.25(3), pp.523-541
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Date published
- 2024
- DOI
- 10.1111/faf.12822
- ISSN
- 1467-2979; 1467-2960
- Copyright note
- © 2024 The Authors. Fish and Fisheries published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
- Data Availability
- The dataset used in this study is available at Research Data JCU: https://doi.org/10.25903/spkx-3m03.
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991014498502621
- Output Type
- Journal article
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