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• W2735607577 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 577:165-176 (2017) - DOI: https://doi.org/10.3354/meps12258 Fine-scale spatial patterns of parrotfish herbivory are shaped by resource availability P. M. Carlson1,2,*, K. Davis1, R. R. Warner2, J. E. Caselle1 1Marine Science Institute, University of California, Santa Barbara, California 93106, USA 2Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California 93106, USA *Corresponding author: peter.carlson@ucsb.edu ABSTRACT: Herbivory by fishes and sea urchins is a powerful mechanism on coral reefs that mitigates coral-algal competition by physically removing algae and creating bare space. Spatially constrained grazing by herbivores, particularly parrotfishes, may foster coral recruitment by creating a spatially continuous refuge of bare substrate for settlement and survival. However, frequent bouts of concentrated feeding potentially remove newly settled corals. Understanding the frequency and intensity of parrotfish foraging behavior at appropriate scales (months and meters) is essential for connecting herbivory with benthic processes. We documented the foraging behavior of a large, mobile coral reef herbivore (the steephead parrotfish Chlorurus microrhinos) on Palmyra Atoll using various techniques (observational follows, fish surveys, and bite scar tracking) across 2 habitat states (one dominated by algal turfs, one dominated by live coral and crustose coralline algae) that are representative of reefs throughout the Central Pacific. Large differences in the abundance of a preferred resource were associated with major differences in feeding behavior. Where resources were abundant and regrew quickly, foraging areas were small and spatially focused, resulting in dense patches of bite scars (>100 bites m-2). Feeding behavior also showed a temporal periodicity, with individuals defending and regrazing the same area after regrowth occurred. In areas where resources were less abundant and recovered more slowly, parrotfish movements and foraging areas were significantly larger and bites were distributed sparsely across food patches. The large variability we observed within a single atoll suggests that characterizing species-specific foraging patterns from small-scale studies may not be appropriate. KEY WORDS: Herbivory · Parrotfish · Coral reefs · Turf algae · Coral-algal interactions · Bite scar · Palmyra Atoll · Chlorurus microrhinos Full text in pdf format Supplementary material PreviousNextCite this article as: Carlson PM, Davis K, Warner RR, Caselle JE (2017) Fine-scale spatial patterns of parrotfish herbivory are shaped by resource availability. Mar Ecol Prog Ser 577:165-176. https://doi.org/10.3354/meps12258 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 577. Online publication date: August 18, 2017 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2017 Inter-Research." @default.
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• W2735607577 date "2017-08-18" @default.
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• W2735607577 title "Fine-scale spatial patterns of parrotfish herbivory are shaped by resource availability" @default.
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