Human activities as a driver of spatial variation in the trophic structure of fish communities on Pacific coral reefs

Global Change Biology - Tập 24 Số 1 - 2018
Jonathan L. W. Ruppert1,2,3, Laurent Vigliola3, Michel Kulbicki4, Pierre Labrosse5, Marie‐Josée Fortin2, Mark G. Meekan1
1Australian Institute of Marine Science c/o UWA Oceans Institute (MO96) Crawley WA Australia
2Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
3Laboratoire d'Excellence LABEX CORAIL IRD (Institut de Recherche pour le Développement) UMR 250 ENTROPIE Nouméa France
4Laboratoire d'Excellence LABEX CORAIL IRD (Institut de Recherche pour le Développement) UMR 250 ENTROPIE Perpignan France
5Haut‐Commissariat de la République en Nouvelle‐Calédonie Nouméa France

Tóm tắt

AbstractAnthropogenic activities such as land‐use change, pollution and fishing impact the trophic structure of coral reef fishes, which can influence ecosystem health and function. Although these impacts may be ubiquitous, they are not consistent across the tropical Pacific Ocean. Using an extensive database of fish biomass sampled using underwater visual transects on coral reefs, we modelled the impact of human activities on food webs at Pacific‐wide and regional (1,000s–10,000s km) scales. We found significantly lower biomass of sharks and carnivores, where there were higher densities of human populations (hereafter referred to as human activity); however, these patterns were not spatially consistent as there were significant differences in the trophic structures of fishes among biogeographic regions. Additionally, we found significant changes in the benthic structure of reef environments, notably a decline in coral cover where there was more human activity. Direct human impacts were the strongest in the upper part of the food web, where we found that in a majority of the Pacific, the biomass of reef sharks and carnivores were significantly and negatively associated with human activity. Finally, although human‐induced stressors varied in strength and significance throughout the coral reef food web across the Pacific, socioeconomic variables explained more variation in reef fish trophic structure than habitat variables in a majority of the biogeographic regions. Notably, economic development (measured as GDP per capita) did not guarantee healthy reef ecosystems (high coral cover and greater fish biomass). Our results indicate that human activities are significantly shaping patterns of trophic structure of reef fishes in a spatially nonuniform manner across the Pacific Ocean, by altering processes that organize communities in both “top‐down” (fishing of predators) and “bottom‐up” (degradation of benthic communities) contexts.

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Tài liệu tham khảo

10.1038/nature06851

10.1890/08-1213.1

10.1371/journal.pone.0165113

10.1038/nature02691

10.1146/annurev.psych.47.1.563

10.1007/978-1-4419-7976-6

10.1007/s00227-011-1623-9

10.1371/journal.pone.0000711

10.1371/journal.pone.0060564

10.1016/B978-0-08-092551-6.50011-8

10.1016/j.jembe.2005.12.010

10.1007/s003380050246

10.1890/0012-9615(1997)067[0461:AYSOCA]2.0.CO;2

10.1038/ncomms12000

10.1111/j.1461-0248.2008.01243.x

10.1016/j.cub.2016.12.005

10.1073/pnas.1208909109

Dray S. Legendre P. &Blanchet G.(2013).packfor: Forward Selection with permutation (Canoco p. 46). In:R package version 0.0‐8/r109. Retrieved fromhttp://R-Forge.R-project.org/projects/sedar/.

10.1111/j.1461-0248.2004.00593.x

10.3354/meps318001

10.1007/s00338-010-0699-x

Froese R. &Pauly D.(2011).Fishbase. Retrieved fromwww.fishbase.org World Wide Web electronic publication.

10.1038/nature21708

10.1017/CBO9780511617799

10.1016/j.cub.2016.10.062

10.1126/science.1149345

10.1126/science.1085046

10.4319/lo.1999.44.3_part_2.0932

IUCN & UNEP‐WCMC(2013).The World Database on Protected Areas (WDPA). Cambridge UK: UNEP‐WCMC. Retrieved fromwww.protectedplanet.net. Accessed on March 10 2013.

10.1046/j.1523-1739.1994.08010157.x

10.1016/j.ocecoaman.2011.07.011

10.1016/j.marpol.2010.03.013

10.1016/j.jembe.2010.03.003

Kulbicki M., 2005, A general approach to length‐weight relationships for Pacific lagoon fishes, Cybium, 29, 235

10.1017/CBO9781316105412.013

Kulbicki M. Moutham G. Vigliola L. Wantiez L. Manaldo E. Labrosse P. &Letourneur Y.(2011).Major Coral Reef Fish Species of the South Pacific with basic information on their biology and ecology. In:CRISP‐IRD report. Noumea New Caledonia SPC.

Kulbicki M., 2013, Global biogeography of reef fishes: A hierarchical quantitative delineation of regions, PLoS ONE, 8, 11, 10.1371/journal.pone.0081847

Labrosse P. Kulbucki M. &Ferraris J.(2002).Underwater Visual Fish Census Surveys: Proper use and implementation. New Caledonia Secretariat of the Pacific Community.

10.1007/s00338-015-1371-2

Legendre P.(2007).One‐way ANOVA with permutation test in R software. Retrieved fromhttp://adn.biol.umontreal.ca/~numericalecology/labo/fonctions_r/anova.1way.R.zip.

10.1890/0012-9615(1999)069[0001:DBRATM]2.0.CO;2

10.1016/B978-0-444-53868-0.50018-6

10.3354/meps08029

10.1890/11-1059.1

10.1126/science.1255641

10.1016/j.biocon.2013.05.026

10.1073/pnas.1106861108

10.1038/nature06922

10.1111/j.1466-8238.2009.00513.x

10.1038/ncomms10491

10.1098/rspb.2007.1472

10.1371/journal.pbio.1000606

10.1016/j.cub.2016.05.058

10.1038/nature02286

10.3354/meps09450

10.1111/j.1523-1739.2012.01835.x

10.1016/j.aquabot.2007.12.007

Oksanen J. Guillaume Blanchet F. Friendly M. Kindt R. Legendre P. Mcglinn D. …Wagner H. (2016).vegan: Community Ecology Package. In: R package version 2.4‐1. Retrieved fromhttp://CRAN.R-project.org/package=vegan.

10.1890/0012-9658(2006)87[2614:VPOSDM]2.0.CO;2

10.1111/j.1467-2979.2011.00425.x

10.2112/SI53-004.1

10.1016/j.cub.2006.09.044

10.1016/j.tree.2016.02.014

10.18637/jss.v048.i02

10.1016/j.tree.2016.05.003

10.1371/journal.pone.0074648

10.1371/journal.pone.0001548

SEDAC(2005).Gridded Population of the World Version 3 (GPWv3): Population Density Grid Future Estimates. (ed Center for International Earth Science Information Network (Ciesin)/Columbia University ACIDaTC) Palisades NY: NASA Socioeconomic Data and Applications Center.

Valdivia A., 2017, Predatory fish depletion and recovery potential on Caribbean reefs, Science Advances, 3, 11, 10.1126/sciadv.1601303

10.3755/galaxea.11.91

10.1371/journal.pone.0095565

10.1007/s00382-009-0716-3

10.1371/journal.pone.0011722

10.1371/journal.pone.0011968

10.1371/journal.pone.0120516

10.1111/ecog.01353

10.1111/j.1365-2486.2008.01696.x

10.1007/s00227-006-0538-3

10.1007/s00338-014-1219-1

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Global Change Biology

Tập 24 Số 1

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