Similar impacts of fishing and environmental stress on calcifying organisms in Indian Ocean coral reefs

被引:18
作者
McClanahan, Timothy R. [1 ]
Muthiga, Nyawira A. [1 ,2 ]
机构
[1] Wildlife Conservat Soc, Marine Programs, 2300 Southern Blvd, Bronx, NY 10460 USA
[2] Wildlife Conservat Soc, Marine Programs, POB 99470, Nairobi 80107, Kenya
基金
英国经济与社会研究理事会; 英国自然环境研究理事会;
关键词
Benthic cover; Calcium carbonate; Ecosystem-based management; Climate change; Predation; Resilience; GREAT-BARRIER-REEF; MARINE PROTECTED AREAS; ECHINOMETRA-MATHAEI DEBLAINVILLE; HUMAN-POPULATION DENSITY; SEA-URCHIN; CARIBBEAN REEF; CLIMATE-CHANGE; TEMPERATURE-VARIATION; FISHERIES CLOSURES; HERBIVOROUS FISHES;
D O I
10.3354/meps11921
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Calcification and reef growth processes dominated by corals and calcifying algae are threatened by climate and fishing disturbances. Twenty-seven environmental, habitat, and species interaction variables were tested for their influence on coral and calcifier cover in 201 western Indian Ocean coral reefs distributed across similar to 20 degrees of latitude and longitude and up to 20 m deep. These variables predicted more of the total between-site variance of calcifying organism cover (similar to 50%) than coral cover (similar to 20%). Satellite-derived environmental variables of temperature, light, and water quality predicted more of the coral and calcifier cover than feeding interactions when groups of related variables were analyzed separately. Nevertheless, when simultaneously evaluating all variables, the environmental variables better predicted coral cover, but proxies of feeding interactions better predicted calcifier cover. Coral and calcifier cover were most consistently negatively influenced by sea surface temperature distributions (right skewness), but the orange-lined triggerfish Balistapus undulatus consistently had a strong positive association with coral and calcifier cover. Herbivorous fish and Diadematidae sea urchins were not positively associated with coral and calcifier cover. A primary prey of B. undulatus, the rock-boring sea urchin Echinometra mathaei, had a strong negative association with coral cover and particularly calcifier cover. Island reefs had higher calcifier abundance than fringing reefs, which probably results from high Acropora and B. undulatus but low E. mathaei abundance. When comparing all variables and models, these taxonomic associations had more influence than environmental stress variables on calcifiers. Given the important predatory role of B. undulatus in controlling E. mathaei populations, fishing restrictions on this species could help attenuate calcification losses predicted by climate change.
引用
收藏
页码:87 / 103
页数:17
相关论文
共 92 条
[1]   Dynamics of seawater carbonate chemistry, production, and calcification of a coral reef flat, central Great Barrier Reef [J].
Albright, R. ;
Langdon, C. ;
Anthony, K. R. N. .
BIOGEOSCIENCES, 2013, 10 (10) :6747-6758
[2]   Ocean Acidification and Coral Reefs: Effects on Breakdown, Dissolution, and Net Ecosystem Calcification [J].
Andersson, Andreas J. ;
Gledhill, Dwight .
ANNUAL REVIEW OF MARINE SCIENCE, VOL 5, 2013, 5 :321-348
[3]   Episodic heterogeneous decline and recovery of coral cover in the Indian Ocean [J].
Ateweberhan, M. ;
McClanahan, T. R. ;
Graham, N. A. J. ;
Sheppard, C. R. C. .
CORAL REEFS, 2011, 30 (03) :739-752
[4]   Relationship between historical sea-surface temperature variability and climate change-induced coral mortality in the western Indian Ocean [J].
Ateweberhan, M. ;
McClanahan, Tim R. .
MARINE POLLUTION BULLETIN, 2010, 60 (07) :964-970
[5]   Partitioning scleractinian coral diversity across reef sites and regions in the Western Indian Ocean [J].
Ateweberhan, Mebrahtu ;
McClanahan, Timothy R. .
ECOSPHERE, 2016, 7 (05)
[6]   Mixed responses of tropical Pacific fisheries and aquaculture to climate change [J].
Bell, Johann D. ;
Ganachaud, Alexandre ;
Gehrke, Peter C. ;
Griffiths, Shane P. ;
Hobday, Alistair J. ;
Hoegh-Guldberg, Ove ;
Johnson, Johanna E. ;
Le Borgne, Robert ;
Lehodey, Patrick ;
Lough, Janice M. ;
Matear, Richard J. ;
Pickering, Timothy D. ;
Pratchett, Morgan S. ;
Sen Gupta, Alex ;
Senina, Inna ;
Waycott, Michelle .
NATURE CLIMATE CHANGE, 2013, 3 (06) :591-599
[7]   Human activity selectively impacts the ecosystem roles of parrotfishes on coral reefs [J].
Bellwood, David R. ;
Hoey, Andrew S. ;
Hughes, Terence P. .
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 2012, 279 (1733) :1621-1629
[8]   Effects of Human Population Density and Proximity to Markets on Coral Reef Fishes Vulnerable to Extinction by Fishing [J].
Brewer, T. D. ;
Cinner, J. E. ;
Green, A. ;
Pressey, R. L. .
CONSERVATION BIOLOGY, 2013, 27 (03) :443-452
[9]   Echinoid community structure and rates of herbivory and bioerosion on exposed and sheltered reefs [J].
Bronstein, Omri ;
Loya, Yossi .
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 2014, 456 :8-17
[10]   Coral reef degradation is not correlated with local human population density [J].
Bruno, John F. ;
Valdivia, Abel .
SCIENTIFIC REPORTS, 2016, 6