干旱区生态环境知识资源中心(Arid): Grazing halos on coral reefs: predation risk, herbivore density, and habitat size influence grazing patterns that are visible from space

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DOI	10.3354/meps13074
	Grazing halos on coral reefs: predation risk, herbivore density, and habitat size influence grazing patterns that are visible from space
	DiFiore, Bartholomew P.; Queenborough, Simon A.; Madin, Elizabeth M. P.; Paul, Valerie J.; Decker, Mary Beth; Stier, Adrian C.
通讯作者	DiFiore, BP (corresponding author), Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA. ; DiFiore, BP (corresponding author), Yale Univ, Yale Sch Forestry & Environm Studies, New Haven, CT 06511 USA. ; DiFiore, BP (corresponding author), Smithsonian Marine Stn Ft Pierce, Ft Pierce, FL 34949 USA.
来源期刊	MARINE ECOLOGY PROGRESS SERIES
ISSN	0171-8630
EISSN	1616-1599
出版年	2019
卷号	627 页码:71-81
英文摘要	The behavior of organisms at local scales can have dramatic effects on the distribution of habitat and ecosystem processes at large spatial scales. Grazing halos-barren areas of sand surrounding coral reefs-are readily visible in remotely sensed imagery, and are formed by herbivores preferentially grazing close to the safety of the reef. Grazing halo size can vary by more than an order of magnitude, yet we lack an understanding of what underlies this variation. Changes in grazing intensity and the distance herbivores travel may be influenced by predation risk, resource availability, and structural attributes of the reef. Here, we tested how predator density, herbivore density, and patch reef area are correlated with halo size and grazing patterns by linking satellite imagery with mensurative experiments on patch reefs in the Caribbean. Chronic predation risk suppressed the overall foraging intensity of herbivorous fishes; a doubling in predator density led to a 29% decrease in grazing. Variation in herbivore density, which was tightly correlated with patch reef area, was linked to the distance herbivores foraged from the reef. Furthermore, herbivore density and/or reef area was the best predictor of halo width at field sites, and reef area explained a significant proportion of the variation in halo size across the landscape. Our results contribute to a growing body of research suggesting that halos may function as footprints of ecological processes, such as herbivory, that can be quantified using remote sensing, and offer a potential avenue to improve monitoring of coral reef management.
英文关键词	Predator-prey interaction Foraging ecology Herbivory Predation risk Remote sensing Seagrass Landscape ecology
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000521165900006
WOS关键词	FORAGING BEHAVIOR ; TROPHIC CASCADES ; NAMIB DESERT ; FISH ; COMPETITION ; LANDSCAPE ; ECOSYSTEMS
WOS类目	Ecology ; Marine & Freshwater Biology ; Oceanography
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Oceanography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369335
作者单位	[DiFiore, Bartholomew P.; Stier, Adrian C.] Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA; [DiFiore, Bartholomew P.; Queenborough, Simon A.] Yale Univ, Yale Sch Forestry & Environm Studies, New Haven, CT 06511 USA; [DiFiore, Bartholomew P.; Paul, Valerie J.] Smithsonian Marine Stn Ft Pierce, Ft Pierce, FL 34949 USA; [Madin, Elizabeth M. P.] Univ Hawaii, Hawaii Inst Marine Biol, Kaneohe, HI 96744 USA; [Madin, Elizabeth M. P.] Macquarie Univ, Dept Biol Sci, Sydney, NSW 2109, Australia; [Decker, Mary Beth] Yale Univ, Dept Ecol & Evolut, New Haven, CT 06511 USA
推荐引用方式 GB/T 7714	DiFiore, Bartholomew P.,Queenborough, Simon A.,Madin, Elizabeth M. P.,et al. Grazing halos on coral reefs: predation risk, herbivore density, and habitat size influence grazing patterns that are visible from space[J],2019,627:71-81.
APA	DiFiore, Bartholomew P.,Queenborough, Simon A.,Madin, Elizabeth M. P.,Paul, Valerie J.,Decker, Mary Beth,&Stier, Adrian C..(2019).Grazing halos on coral reefs: predation risk, herbivore density, and habitat size influence grazing patterns that are visible from space.MARINE ECOLOGY PROGRESS SERIES,627,71-81.
MLA	DiFiore, Bartholomew P.,et al."Grazing halos on coral reefs: predation risk, herbivore density, and habitat size influence grazing patterns that are visible from space".MARINE ECOLOGY PROGRESS SERIES 627(2019):71-81.