Synergistic and antagonistic impacts of suspended sediments and thermal stress on corals DOI Creative Commons
Rebecca Fisher, Pia Bessell‐Browne, Ross Jones

et al.

Nature Communications, Journal Year: 2019, Volume and Issue: 10(1)

Published: May 28, 2019

Abstract Understanding pressure pathways and their cumulative impacts is critical for developing effective environmental policy. For coral reefs, wide spread bleaching resulting from global warming occurring concurrently with local pressures, such as increases in suspended sediments through coastal development. Here we examine the relative importance of sediment dredging on corals evidence synergistic or antagonistic effects between thermal stress. We show that low to moderate reductions available light associated may lead weak (less than expected independently) effects. However, when loads are high any mortality reduced outweighed by increased severe periods levels deposition become (greater what would occur independently). The findings suggest efforts assess need consider how pressures interact impact ecosystems, outcome vary across range realised fields.

Language: Английский

Nitrogen pollution interacts with heat stress to increase coral bleaching across the seascape DOI Open Access
Mary K. Donovan, Thomas C. Adam, Andrew A. Shantz

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2020, Volume and Issue: 117(10), P. 5351 - 5357

Published: Feb. 24, 2020

Climate change is increasing the frequency and magnitude of temperature anomalies that cause coral bleaching, leading to widespread mortality stony corals can fundamentally alter reef structure function. However, bleaching often spatially variable for a given heat stress event, drivers this heterogeneity are not well resolved. While small-scale experiments have shown excess nitrogen increase susceptibility colony we lack evidence in pollution shape spatial patterns across seascape. Using island-wide surveys availability within Bayesian hierarchical modeling framework, tested hypothesis interacts with two dominant genera branching Moorea, French Polynesia. For both genera, Pocillopora Acropora, primarily drove prevalence (i.e., proportion colonies on bleached). In contrast, severity an individual bleached) was positively associated genera. Importantly, interacted up twofold when high relatively low. Our finding trigger severe even under low implies mitigating nutrient may enhance resilience communities face mounting stresses from global climate change.

Language: Английский

Citations

144
Coral‐bleaching responses to climate change across biological scales DOI
Robert van Woesik, Tom Shlesinger, Andréa G. Grottoli

et al.

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(14), P. 4229 - 4250

Published: April 27, 2022

Abstract The global impacts of climate change are evident in every marine ecosystem. On coral reefs, mass bleaching and mortality have emerged as ubiquitous responses to ocean warming, yet one the greatest challenges this epiphenomenon is linking information across scientific disciplines spatial temporal scales. Here we review some seminal recent coral‐bleaching discoveries from an ecological, physiological, molecular perspective. We also evaluate which data processes can improve predictive models provide a conceptual framework that integrates measurements biological Taking integrative approach scales, using for example hierarchical estimate major coral‐reef processes, will not only rapidly advance science but necessary guide decision‐making conservation efforts. To conserve encourage implementing mesoscale sanctuaries (thousands km 2 ) transcend national boundaries. Such networks protected reefs reef connectivity, through larval dispersal transverse thermal environments, genotypic repositories may become essential units selection environmentally diverse locations. Together, multinational be best chance corals persist change, while humanity struggles reduce emissions greenhouse gases net zero.

Language: Английский

Citations

103
Continent-wide declines in shallow reef life over a decade of ocean warming DOI
Graham J. Edgar, Rick D. Stuart‐Smith, Freddie J. Heather

et al.

Nature, Journal Year: 2023, Volume and Issue: 615(7954), P. 858 - 865

Published: March 22, 2023

Language: Английский

Citations

55
Marine protected areas, marine heatwaves, and the resilience of nearshore fish communities DOI Creative Commons
Shelby L. Ziegler,

Jasmin M. Johnson,

Rachel O. Brooks

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Jan. 25, 2023

Abstract Anthropogenic stressors from climate change can affect individual species, community structure, and ecosystem function. Marine heatwaves (MHWs) are intense thermal anomalies where water temperature is significantly elevated for five or more days. Climate projections suggest an increase in the frequency severity of MHWs coming decades. While there evidence that marine protected areas (MPAs) may be able to buffer species impacts, not sufficient support idea MPAs mitigate large-scale changes communities response MHWs. California experienced MHW subsequent El Niño Southern Oscillation event 2014 2016. We sought examine rocky reef fish at four associated reference sites relation MHW. observed a decline taxonomic diversity profound shift trophic inside outside following However, seemed dampen loss years MHW, recovered 75% faster compared sites. Our results contribute long-term resilience nearshore through both resistance recovery warming events.

Language: Английский

Citations

44
The impacts of climate change on coastal groundwater DOI
Christina Richardson, Kay L. Davis, Clara Ruiz‐González

et al.

Nature Reviews Earth & Environment, Journal Year: 2024, Volume and Issue: 5(2), P. 100 - 119

Published: Jan. 11, 2024

Language: Английский

Citations

38
Global impacts of marine heatwaves on coastal foundation species DOI Creative Commons
Kathryn E. Smith,

M. Aubin,

Michael T. Burrows

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 13, 2024

Abstract With increasingly intense marine heatwaves affecting nearshore regions, foundation species are coming under increasing stress. To better understand their impacts, we examine responses of critical, habitat-forming (macroalgae, seagrass, corals) to in 1322 shallow coastal areas located across 85 ecoregions. We find compelling evidence that intense, summer play a significant role the decline globally. Critically, detrimental effects increase towards warm-range edges and over time. also identify several ecoregions where don’t respond heatwaves, suggestive some resilience warming events. Cumulative heatwave intensity, absolute temperature, location within species’ range key factors mediating impacts. Our results suggest many ecosystems losing species, potentially impacting associated biodiversity, ecological function, ecosystem services provision. Understanding relationships between offers potential predict impacts critical for developing management adaptation approaches.

Language: Английский

Citations

20
Sustainable blue economy: Opportunities and challenges DOI

Sahil Narwal,

Manpreet Kaur, Digvijay Singh Yadav

et al.

Journal of Biosciences, Journal Year: 2024, Volume and Issue: 49(1)

Published: Jan. 18, 2024

Language: Английский

Citations

18
Biologists ignore ocean weather at their peril DOI
Amanda E. Bates, Brian Helmuth, Michael T. Burrows

et al.

Nature, Journal Year: 2018, Volume and Issue: 560(7718), P. 299 - 301

Published: Aug. 13, 2018

Language: Английский

Citations

133
Global Observational Needs and Resources for Marine Biodiversity DOI Creative Commons
Gabrielle Canonico, Pier Luigi Buttigieg, Enrique Montes

et al.

Frontiers in Marine Science, Journal Year: 2019, Volume and Issue: 6

Published: July 23, 2019

Living resources in the sea are essential to economic, nutritional, recreational, and health needs of billions people. Variation biodiversity that characterizes marine systems, which underlies numerous ecosystem services provided humans, is being rapidly altered by changing environmental factors human activity. Understanding underlying causes these patterns, forecasting where future changes likely occur, requires monitoring patterns organism abundance, diversity, distribution health; productivity function; allelic diversity genetic expression. To achieve this goal it necessary observations accompanied metrics socio-economic drivers. However, existing global ocean observing activities often do not explicitly consider associated processes. Implementing operational programs observe life increasingly critical understanding responses species ecosystems stressors, overall impacts on natural capital, services, welfare. Here we describe efforts community advance broad partnerships, shared approaches best practices toward a standardized yet flexible, integrated system serves information resource managers decision-makers, scientists educators, from local scales.

Language: Английский

Citations

133
Marine Heatwave Hotspots in Coral Reef Environments: Physical Drivers, Ecophysiological Outcomes, and Impact Upon Structural Complexity DOI Creative Commons
Alexander Fordyce, Tracy D. Ainsworth, Scott F. Heron

et al.

Frontiers in Marine Science, Journal Year: 2019, Volume and Issue: 6

Published: Aug. 16, 2019

A changing climate is driving increasingly common and prolonged marine heatwaves (MHWs) these extreme events have now been widely documented to severely impact ecosystems globally. However MHWs rarely recently considered when examining temperature-induced degradation of coral reef ecosystems. Here we consider extreme, localised thermal anomalies, nested within broader increases in sea surface temperature, which fulfil the definitive criteria for MHWs. These acute intense events, referred here as MHW hotspots, are not always well represented current framework used describe bleaching, but do distinct ecological outcomes, including widespread bleaching rapid mass mortality putatively thermally tolerant species. The physical drivers hotspots discussed here, doing so present a comprehensive theoretical that links biological responses photo-endosymbiotic organism stress changes on reefs associated after hotspots. We how onset high temperatures drives immediate heat-stress induced cellular damage, overwhelming mechanisms would otherwise mitigate gradually accumulated stress. warm environment, increased light penetration skeleton due loss tissues, coupled with tissue decay support microbial growth skeletal microenvironment, resulting unrecognised consequence degeneration skeletons. This accelerated skeletonson scale hinder recovery populations increase likelihood phase shifts towards algal dominance. suggest through heat-induced mortality, compromise reefs' structural frameworks detriment long term recovery. propose be class reefs, expanded include these. urge further research into affects bioerosion by endoliths.

Language: Английский

Citations

106