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Pörtner HO, Scholes RJ, Arneth A, Barnes DKA, Burrows MT, Diamond SE, Duarte CM, Kiessling W, Leadley P, Managi S, McElwee P, Midgley G, Ngo HT, Obura D, Pascual U, Sankaran M, Shin YJ, Val AL. Overcoming the coupled climate and biodiversity crises and their societal impacts. Science 2023; 380:eabl4881. [PMID: 37079687 DOI: 10.1126/science.abl4881] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Earth's biodiversity and human societies face pollution, overconsumption of natural resources, urbanization, demographic shifts, social and economic inequalities, and habitat loss, many of which are exacerbated by climate change. Here, we review links among climate, biodiversity, and society and develop a roadmap toward sustainability. These include limiting warming to 1.5°C and effectively conserving and restoring functional ecosystems on 30 to 50% of land, freshwater, and ocean "scapes." We envision a mosaic of interconnected protected and shared spaces, including intensively used spaces, to strengthen self-sustaining biodiversity, the capacity of people and nature to adapt to and mitigate climate change, and nature's contributions to people. Fostering interlinked human, ecosystem, and planetary health for a livable future urgently requires bold implementation of transformative policy interventions through interconnected institutions, governance, and social systems from local to global levels.
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Affiliation(s)
- H-O Pörtner
- Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
- Department of Biology and Chemistry, University of Bremen, Bremen, Germany
| | - R J Scholes
- Global Change Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - A Arneth
- Atmospheric Environmental Research, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany
| | - D K A Barnes
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
| | - M T Burrows
- Scottish Association for Marine Science, Oban, Argyll, UK
| | - S E Diamond
- Department of Biology, Case Western Reserve University, Cleveland, OH, USA
| | - C M Duarte
- Red Sea Research Centre (RSRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
- Computational Bioscience Research Centre (CBRC), King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - W Kiessling
- Geozentrum Nordbayern, Friedrich-Alexander-Universität, Erlangen, Germany
| | - P Leadley
- Laboratoire d'Ecologie Systématique Evolution, Université Paris-Saclay, CNRS, AgroParisTech, 91400 Orsay, France
| | - S Managi
- Urban Institute, Kyushu University, Fukuoka, Japan
| | - P McElwee
- Department of Human Ecology, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - G Midgley
- Global Change Biology Group, Botany and Zoology Department, University of Stellenbosch, 7600 Stellenbosch, South Africa
| | - H T Ngo
- Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), Bonn, Germany
- Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, Italy
| | - D Obura
- Coastal Oceans Research and Development-Indian Ocean (CORDIO) East Africa, Mombasa, Kenya
- Global Climate Institute, University of Queensland, Brisbane, QLD 4072, Australia
| | - U Pascual
- Basque Centre for Climate Change (BC3), Leioa, Spain
- Basque Foundation for Science (Ikerbasque), Bilbao, Spain
- Centre for Development and Environment, University of Bern, Bern, Switzerland
| | - M Sankaran
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bellary Road, Bangalore, Karnataka, India
| | - Y J Shin
- Marine Biodiversity, Exploitation and Conservation (MARBEC), Institut de Recherche pour le Développement (IRD), Université Montpellier, Insititut Français de Recherche pour l'Exploitation de la Mer (IFREMER), CNRS, 34000 Montpellier, France
| | - A L Val
- Brazilian National Institute for Research of the Amazon, 69080-971 Manaus, Brazil
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Barnes DKA, Sands CJ, Paulsen ML, Moreno B, Moreau C, Held C, Downey R, Bax N, Stark JS, Zwerschke N. Correction to: Societal importance of Antarctic negative feedbacks on climate change: blue carbon gains from sea ice, ice shelf and glacier losses. Naturwissenschaften 2021; 108:51. [PMID: 34633554 DOI: 10.1007/s00114-021-01759-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - C J Sands
- British Antarctic Survey, NERC, Cambridge, UK
| | | | - B Moreno
- Universidad Científica del Sur, Lima, Peru
| | - C Moreau
- Université Libre de Bruxelles, Brussels, Belgium
| | - C Held
- Alfred Wegner Institute, Bremerhaven, Germany
| | - R Downey
- Australian National University, Canberra, Australia
| | - N Bax
- South Atlantic Environmental Research Institute, Stanley, South Atlantic, Falkland Islands
| | - J S Stark
- Australian Antarctic Division, Hobart, Australia
| | - N Zwerschke
- British Antarctic Survey, NERC, Cambridge, UK
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Abstract
The flow of carbon from atmosphere to sediment fauna and sediments reduces atmospheric CO2, which in turn reduces warming. Here, during the Changing Arctic Ocean Seafloor programme, we use comparable methods to those used in the Antarctic (vertical, calibrated camera drops and trawl-collected specimens) to calculate the standing stock of zoobenthic carbon throughout the Barents Sea. The highest numbers of morphotypes, functional groups and individuals were found in the northernmost sites (80-81.3° N, 29-30° E). Ordination (non-metric multidimensional scaling) suggested a cline of faunal transition from south to north. The functional group dominance differed across all six sites, despite all being apparently similar muds. Of the environmental variables we measured, only water current speed could significantly explain any of our spatial carbon differences. We found no obvious relationship with sea ice loss and thus no evidence of Arctic blue carbon-climate feedback. Blue carbon in the Barents Sea can be comparable with the highest levels in Antarctic shelf sediments. This article is part of the theme issue 'The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'.
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Affiliation(s)
- T. A. Souster
- Ulster University, Coleraine Campus, Coleraine, UK
- Biological Sciences, British Antarctic Survey, UKRI, Cambridge, UK
- e-mail:
| | - D. K. A. Barnes
- Biological Sciences, British Antarctic Survey, UKRI, Cambridge, UK
| | - J. Hopkins
- Marine Physics and Ocean Climate, National Oceanography Centre, Liverpool, UK
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Rogers AD, Frinault BAV, Barnes DKA, Bindoff NL, Downie R, Ducklow HW, Friedlaender AS, Hart T, Hill SL, Hofmann EE, Linse K, McMahon CR, Murphy EJ, Pakhomov EA, Reygondeau G, Staniland IJ, Wolf-Gladrow DA, Wright RM. Antarctic Futures: An Assessment of Climate-Driven Changes in Ecosystem Structure, Function, and Service Provisioning in the Southern Ocean. Ann Rev Mar Sci 2020; 12:87-120. [PMID: 31337252 DOI: 10.1146/annurev-marine-010419-011028] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this article, we analyze the impacts of climate change on Antarctic marine ecosystems. Observations demonstrate large-scale changes in the physical variables and circulation of the Southern Ocean driven by warming, stratospheric ozone depletion, and a positive Southern Annular Mode. Alterations in the physical environment are driving change through all levels of Antarctic marine food webs, which differ regionally. The distributions of key species, such as Antarctic krill, are also changing. Differential responses among predators reflect differences in species ecology. The impacts of climate change on Antarctic biodiversity will likely vary for different communities and depend on species range. Coastal communities and those of sub-Antarctic islands, especially range-restricted endemic communities, will likely suffer the greatest negative consequences of climate change. Simultaneously, ecosystem services in the Southern Ocean will likely increase. Such decoupling of ecosystem services and endemic species will require consideration in the management of human activities such as fishing in Antarctic marine ecosystems.
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Affiliation(s)
- A D Rogers
- Department of Zoology, University of Oxford, Oxford OX1 3PS, United Kingdom;
- REV Ocean, 1366 Lysaker, Norway
| | - B A V Frinault
- School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, United Kingdom
| | - D K A Barnes
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, United Kingdom
| | - N L Bindoff
- Antarctic Climate and Ecosystems Cooperative Research Centre and CSIRO Oceans and Atmospheres, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - R Downie
- WWF, Living Planet Centre, Surrey GU21 4LL, United Kingdom
| | - H W Ducklow
- Lamont-Doherty Earth Observatory and Department of Earth and Environmental Sciences, Columbia University, Palisades, New York 10964-8000, USA
| | - A S Friedlaender
- Institute for Marine Sciences, University of California, Santa Cruz, California 95060, USA
| | - T Hart
- Department of Zoology, University of Oxford, Oxford OX1 3PS, United Kingdom;
| | - S L Hill
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, United Kingdom
| | - E E Hofmann
- Center for Coastal Physical Oceanography, Old Dominion University, Norfolk, Virginia 23508, USA
| | - K Linse
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, United Kingdom
| | - C R McMahon
- Integrated Marine Observing System Animal Tracking Facility, Sydney Institute of Marine Science, Sydney, New South Wales 2088, Australia
| | - E J Murphy
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, United Kingdom
| | - E A Pakhomov
- Department of Earth, Ocean, and Atmospheric Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Aquatic Ecosystems Research Lab, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - G Reygondeau
- Aquatic Ecosystems Research Lab, Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - I J Staniland
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, United Kingdom
| | - D A Wolf-Gladrow
- Alfred-Wegener-Institut Helmholtz Zentrum für Polar- und Meeresforschung (AWI), 27570 Bremerhaven, Germany
| | - R M Wright
- Tyndall Centre, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom
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Barnes DKA, Morley SA, Bell J, Brewin P, Brigden K, Collins M, Glass T, Goodall-Copestake WP, Henry L, Laptikhovsky V, Piechaud N, Richardson A, Rose P, Sands CJ, Schofield A, Shreeve R, Small A, Stamford T, Taylor B. Marine plastics threaten giant Atlantic Marine Protected Areas. Curr Biol 2019; 28:R1137-R1138. [PMID: 30300595 DOI: 10.1016/j.cub.2018.08.064] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
There has been a recent shift in global perception of plastics in the environment, resulting in a call for greater action. Science and the popular media have highlighted plastic as an increasing stressor [1,2]. Efforts have been made to confer protected status to some remote locations, forming some of the world's largest Marine Protected Areas, including several UK overseas territories. We assessed plastic at these remote Atlantic Marine Protected Areas, surveying the shore, sea surface, water column and seabed, and found drastic changes from 2013-2018. Working from the RRS James Clark Ross at Ascension, St. Helena, Tristan da Cunha, Gough and the Falkland Islands (Figure 1A), we showed that marine debris on beaches has increased more than 10 fold in the past decade. Sea surface plastics have also increased, with in-water plastics occurring at densities of 0.1 items m-3; plastics on seabeds were observed at ≤ 0.01 items m-2. For the first time, beach densities of plastics at remote South Atlantic sites approached those at industrialised North Atlantic sites. This increase even occurs hundreds of meters down on seamounts. We also investigated plastic incidence in 2,243 animals (comprising 26 species) across remote South Atlantic oceanic food webs, ranging from plankton to seabirds. We found that plastics had been ingested by primary consumers (zooplankton) to top predators (seabirds) at high rates. These findings suggest that MPA status will not mitigate the threat of plastic proliferation to this rich, unique and threatened biodiversity.
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Affiliation(s)
| | - S A Morley
- British Antarctic Survey, NERC, Cambridge, UK
| | - J Bell
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - P Brewin
- South Atlantic Environment Research Institute, Stanley, Falkland Islands
| | - K Brigden
- South Atlantic Environment Research Institute, Stanley, Falkland Islands
| | - M Collins
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - T Glass
- Tristan da Cunha Conservation Department, Edinburgh, UK Overseas Territory
| | | | - L Henry
- Marine Conservation, ENRD, St. Helena Government
| | - V Laptikhovsky
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | | | - A Richardson
- Ascension Island Conservation and Fisheries Department
| | - P Rose
- Pristine Seas, National Geographic Society, Washington DC, USA
| | - C J Sands
- British Antarctic Survey, NERC, Cambridge, UK
| | - A Schofield
- Royal Society for the Protection of Birds, Sandy, UK
| | - R Shreeve
- Marine Conservation, ENRD, St. Helena Government
| | - A Small
- Marine Conservation, ENRD, St. Helena Government
| | - T Stamford
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - B Taylor
- St. Helena National Trust, Jamestown, St. Helena
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Abstract
Climate forcing of sea-ice losses from the Arctic and West Antarctic are blueing the poles. These losses are accelerating, reducing Earth's albedo and increasing heat absorption. Subarctic forest (area expansion and increased growth) and ice-shelf losses (resulting in new phytoplankton blooms which are eaten by benthos) are the only significant described negative feedbacks acting to counteract the effects of increasing CO2 on a warming planet, together accounting for uptake of ∼10(7) tonnes of carbon per year. Most sea-ice loss to date has occurred over polar continental shelves, which are richly, but patchily, colonised by benthic animals. Most polar benthos feeds on microscopic algae (phytoplankton), which has shown increased blooms coincident with sea-ice losses. Here, growth responses of Antarctic shelf benthos to sea-ice losses and phytoplankton increases were investigated. Analysis of two decades of benthic collections showed strong increases in annual production of shelf seabed carbon in West Antarctic bryozoans. These were calculated to have nearly doubled to >2x10(5) tonnes of carbon per year since the 1980s. Annual production of bryozoans is median within wider Antarctic benthos, so upscaling to include other benthos (combined study species typically constitute ∼3% benthic biomass) suggests an increased drawdown of ∼2.9x10(6) tonnes of carbon per year. This drawdown could become sequestration because polar continental shelves are typically deeper than most modern iceberg scouring, bacterial breakdown rates are slow, and benthos is easily buried. To date, most sea-ice losses have been Arctic, so, if hyperboreal benthos shows a similar increase in drawdown, polar continental shelves would represent Earth's largest negative feedback to climate change.
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Affiliation(s)
- D K A Barnes
- British Antarctic Survey, NERC, Madingley Road, Cambridge CB3 0ET, UK.
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Barnes DKA, Dulvy NK, Priestley SH, Darwall WRT, Choisel V, Whittington M. Fishery characteristics and abundance estimates of the mangrove crabScylla serratain southern Tanzania and northern Moçambique. ACTA ACUST UNITED AC 2010. [DOI: 10.2989/025776102784528312] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
Extensive sponge assemblages are found in a number of habitats at Lough Hyne Marine Nature Reserve. These habitats are unusual in experiencing a range of environmental conditions, even though they are only separated by small geographic distances (1-500 m), reducing the possibility of confounding effects between study sites (e.g., silica concentrations and temperature). Sponge assemblages were examined on ephemeral (rocks), stable (cliffs), and artificial (slate panels) hard substrata from high- and low-energy environments that were used to represent two measures of disturbance (flow rate and habitat stability). Sponge assemblages varied considerably between habitat types such that only 26% (25 species) of species reported were common to both rock and cliff habitats. Seven species (of a total of 96 species) were found in the least-developed assemblages (slate panels) and were common to all habitats. Sponge assemblages on rocks and panels varied little between high- and low-energy environments, whereas assemblages inhabiting cliffs varied considerably. Assemblage composition was visualized using Bray-Curtis similarity analysis and Multi-Dimensional Scaling, which enabled differences and similarities between sponge assemblages to be visualized. Cliffs from high- and low-energy sites had different assemblage compositions compared to large rocks, small rocks, and panels, all of which had similar assemblages irrespective of environmental conditions. Differences in assemblages were partially attributed to sponge morphology (shape), as certain morphologies (e.g., arborescent species) were excluded from 2-D rock habitats. Other mechanisms were also considered responsible for the sponge assemblages associated with different habitats.
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Affiliation(s)
- J J Bell
- Department of Zoology and Animal Ecology, University College Cork, Lee Maltings, Co. Cork, Ireland
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