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• W2783307638 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 590:187-200 (2018) - DOI: https://doi.org/10.3354/meps12473 Microhabitat selectivity shapes the seascape ecology of a carnivorous macroalgae-associated tropical fish Lucy N. Wenger*, Joshua R. van Lier, Christopher J. Fulton Research School of Biology, The Australian National University, Canberra 2601, Australian Capital Territory, Australia *Corresponding author: lucynwenger@gmail.com ABSTRACT: Habitat quantity and quality can be key drivers for the distribution and abundance of animals in heterogeneous landscapes. Macroalgal meadows are often a prominent component of tropical marine ecosystems, yet we have little understanding of how dynamic shifts in this habitat type may affect patterns of fish biodiversity. We examined whether a tropical carnivorous wrasse, Xenojulis margaritaceus, was a macroalgal specialist that responded to changes in canopy habitat structure across space and time. Field surveys revealed that X. margaritaceus exclusively occupied macroalgal meadows, where it foraged for invertebrate epifauna on a range of macroalgal genera such as Sargassum and Lobophora. During summer, X. margaritaceus preferentially occupied the canopy-forming macroalgae Sargassum. Sargassum canopy height, percent cover of understorey algae and the abundance of strong competitors and roving predators provided the best predictors for the abundance of X. margaritaceus abundance across the seascape. Despite seasonal shifts in habitat use to include more understorey algae during winter, X. margaritaceus displayed significant declines in abundance from summer to winter according to the extent of seasonal canopy habitat loss within each meadow. We conclude that carnivorous fishes can be dependent on tropical macroalgal meadows, where they may be vulnerable to a loss of canopy habitat quality arising from local factors and climatic forcing. KEY WORDS: Habitat quality · Specialisation · Seasonality · Sargassum meadow · Xenojulis margaritaceus Full text in pdf format Supplementary material PreviousNextCite this article as: Wenger LN, van Lier JR, Fulton CJ (2018) Microhabitat selectivity shapes the seascape ecology of a carnivorous macroalgae-associated tropical fish. Mar Ecol Prog Ser 590:187-200. https://doi.org/10.3354/meps12473Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 590. Online publication date: March 12, 2018 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2018 Inter-Research." @default.
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• W2783307638 date "2018-03-12" @default.
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• W2783307638 title "Microhabitat selectivity shapes the seascape ecology of a carnivorous macroalgae-associated tropical fish" @default.
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