UN REPORT

Overwhelming evidence shows global biodiversity in crisis

One million animal and plant species are now threatened with extinction, many within decades, more than ever before in human history.


Source: IPBES/Shutterstock


Statement issued in Paris on May 6, 2019, by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services

Nature is declining globally at rates unprecedented in human history — and the rate of species extinctions is accelerating, with grave impacts on people around the world now likely, warns a landmark new report from the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), the summary of which was approved at the 7th session of the IPBES Plenary, meeting last week (29 April – 4 May) in Paris.

“The overwhelming evidence of the IPBES Global Assessment, from a wide range of different fields of knowledge, presents an ominous picture,” said IPBES Chair, Sir Robert Watson. “The health of ecosystems on which we and all other species depend is deteriorating more rapidly than ever. We are eroding the very foundations of our economies, livelihoods, food security, health and quality of life worldwide.

“The Report also tells us that it is not too late to make a difference, but only if we start now at every level from local to global. Through ‘transformative change’, nature can still be conserved, restored and used sustainably – this is also key to meeting most other global goals. By transformative change, we mean a fundamental, system-wide reorganization across technological, economic and social factors, including paradigms, goals and values.”

“The member States of IPBES Plenary have now acknowledged that, by its very nature, transformative change can expect opposition from those with interests vested in the status quo, but also that such opposition can be overcome for the broader public good,” Watson said.

The IPBES Global Assessment Report on Biodiversity and Ecosystem Services is the most comprehensive ever completed. It is the first intergovernmental Report of its kind and builds on the landmark Millennium Ecosystem Assessment of 2005, introducing innovative ways of evaluating evidence.

Compiled by 145 expert authors from 50 countries over the past three years, with inputs from another 310 contributing authors, the Report assesses changes over the past five decades, providing a comprehensive picture of the relationship between economic development pathways and their impacts on nature. It also offers a range of possible scenarios for the coming decades.

Based on the systematic review of about 15,000 scientific and government sources, the Report also draws, for the first time ever at this scale, on indigenous and local knowledge, particularly addressing issues relevant to Indigenous Peoples and Local Communities.

“Biodiversity and nature’s contributions to people are our common heritage and humanity’s most important life-supporting ‘safety net’. But our safety net is stretched almost to breaking point,” said Prof. Sandra Díaz (Argentina), who co-chaired the Assessment with Prof. Josef Settele (Germany) and Prof. Eduardo S. Brondízio (Brazil and USA). “The diversity within species, between species and of ecosystems, as well as many fundamental contributions we derive from nature, are declining fast, although we still have the means to ensure a sustainable future for people and the planet.”

The Report finds that around 1 million animal and plant species are now threatened with extinction, many within decades, more than ever before in human history.

The average abundance of native species in most major land-based habitats has fallen by at least 20%, mostly since 1900. More than 40% of amphibian species, almost 33% of reef forming corals and more than a third of all marine mammals are threatened. The picture is less clear for insect species, but available evidence supports a tentative estimate of 10% being threatened. At least 680 vertebrate species had been driven to extinction since the 16th century and more than 9% of all domesticated breeds of mammals used for food and agriculture had become extinct by 2016, with at least 1,000 more breeds still threatened.

“Ecosystems, species, wild populations, local varieties and breeds of domesticated plants and animals are shrinking, deteriorating or vanishing. The essential, interconnected web of life on Earth is getting smaller and increasingly frayed,” said Prof. Settele. “This loss is a direct result of human activity and constitutes a direct threat to human well-being in all regions of the world.”

To increase the policy-relevance of the Report, the assessment’s authors have ranked, for the first time at this scale and based on a thorough analysis of the available evidence, the five direct drivers of change in nature with the largest relative global impacts so far. These culprits are, in descending order: (1) changes in land and sea use; (2) direct exploitation of organisms; (3) climate change; (4) pollution and (5) invasive alien species.

The Report notes that, since 1980, greenhouse gas emissions have doubled, raising average global temperatures by at least 0.7 degrees Celsius – with climate change already impacting nature from the level of ecosystems to that of genetics – impacts expected to increase over the coming decades, in some cases surpassing the impact of land and sea use change and other drivers.

Despite progress to conserve nature and implement policies, the Report also finds that global goals for conserving and sustainably using nature and achieving sustainability cannot be met by current trajectories, and goals for 2030 and beyond may only be achieved through transformative changes across economic, social, political and technological factors. With good progress on components of only four of the 20 Aichi Biodiversity Targets, it is likely that most will be missed by the 2020 deadline. Current negative trends in biodiversity and ecosystems will undermine progress towards 80% (35 out of 44) of the assessed targets of the Sustainable Development Goals, related to poverty, hunger, health, water, cities, climate, oceans and land. Loss of biodiversity is therefore shown to be not only an environmental issue, but also a developmental, economic, security, social and moral issue as well.

“To better understand and, more importantly, to address the main causes of damage to biodiversity and nature’s contributions to people, we need to understand the history and global interconnection of complex demographic and economic indirect drivers of change, as well as the social values that underpin them,” said Prof. Brondízio.

“Key indirect drivers include increased population and per capita consumption; technological innovation, which in some cases has lowered and in other cases increased the damage to nature; and, critically, issues of governance and accountability. A pattern that emerges is one of global interconnectivity and ‘telecoupling’ – with resource extraction and production often occurring in one part of the world to satisfy the needs of distant consumers in other regions.”

Other notable findings of the Report include:

  • Three-quarters of the land-based environment and about 66% of the marine environment have been significantly altered by human actions. On average these trends have been less severe or avoided in areas held or managed by Indigenous Peoples and Local Communities.
  • More than a third of the world’s land surface and nearly 75% of freshwater resources are now devoted to crop or livestock production.
  • The value of agricultural crop production has increased by about 300% since 1970, raw timber harvest has risen by 45% and approximately 60 billion tons of renewable and nonrenewable resources are now extracted globally every year – having nearly doubled since 1980.
  • Land degradation has reduced the productivity of 23% of the global land surface, up to US$577 billion in annual global crops are at risk from pollinator loss and 100-300 million people are at increased risk of floods and hurricanes because of loss of coastal habitats and protection.
  • In 2015, 33% of marine fish stocks were being harvested at unsustainable levels; 60% were maximally sustainably fished, with just 7% harvested at levels lower than what can be sustainably fished.
  • Urban areas have more than doubled since 1992.
  • Plastic pollution has increased tenfold since 1980, 300-400 million tons of heavy metals, solvents, toxic sludge and other wastes from industrial facilities are dumped annually into the world’s waters, and fertilizers entering coastal ecosystems have produced more than 400 ocean ‘dead zones’, totaling more than 245,000 km2 (591-595) – a combined area greater than that of the United Kingdom.
  • Negative trends in nature will continue to 2050 and beyond in all of the policy scenarios explored in the Report, except those that include transformative change – due to the projected impacts of increasing land-use change, exploitation of organisms and climate change, although with significant differences between regions.

The Report also presents a wide range of illustrative actions for sustainability and pathways for achieving them across and between sectors such as agriculture, forestry, marine systems, freshwater systems, urban areas, energy, finance and many others. It highlights the importance of, among others, adopting integrated management and cross-sectoral approaches that take into account the trade-offs of food and energy production, infrastructure, freshwater and coastal management, and biodiversity conservation.

Also identified as a key element of more sustainable future policies is the evolution of global financial and economic systems to build a global sustainable economy, steering away from the current limited paradigm of economic growth.

“IPBES presents the authoritative science, knowledge and the policy options to decision-makers for their consideration,” said IPBES Executive Secretary, Dr. Anne Larigauderie. “We thank the hundreds of experts, from around the world, who have volunteered their time and knowledge to help address the loss of species, ecosystems and genetic diversity – a truly global and generational threat to human well-being.”

 


KEY STATISTICS AND FACTS FROM THE IPBES REPORT

General

  • 75%: terrestrial environment “severely altered” to date by human actions (marine environments 66%)
  • 47%: reduction in global indicators of ecosystem extent and condition against their estimated natural baselines, with many continuing to decline by at least 4% per decade
  • 28%: global land area held and/or managed by Indigenous Peoples , including >40% of formally protected areas and 37% of all remaining terrestrial areas with very low human intervention
  • +/-60 billion: tons of renewable and non-renewable resources extracted globally each year, up nearly 100% since 1980
  • 15%: increase in global per capita consumption of materials since 1980
  • >85%: of wetlands present in 1700 had been lost by 2000 – loss of wetlands is currently three times faster, in percentage terms, than forest loss.

Species, Populations and Varieties of Plants and Animals

  • 8 million: total estimated number of animal and plant species on Earth (including 5.5 million insect species)
  • Tens to hundreds of times: the extent to which the current rate of global species extinction is higher compared to average over the last 10 million years, and the rate is accelerating
  • Up to 1 million: species threatened with extinction, many within decades
  • >500,000 (+/-9%): share of the world’s estimated 5.9 million terrestrial species with insufficient habitat for long term survival without habitat restoration
  • >40%: amphibian species threatened with extinction
  • Almost 33%: reef forming corals, sharks and shark relatives, and >33% marine mammals threatened with extinction
  • 25%: average proportion of species threatened with extinction across terrestrial, freshwater and marine vertebrate, invertebrate and plant groups that have been studied in sufficient detail
  • At least 680: vertebrate species driven to extinction by human actions since the 16th century
  • +/-10%: tentative estimate of proportion of insect species threatened with extinction
  • >20%: decline in average abundance of native species in most major terrestrial biomes, mostly since 1900
    +/-560 (+/-10%): domesticated breeds of mammals were extinct by 2016, with at least 1,000 more threatened
  • 3.5%: domesticated breed of birds extinct by 2016
  • 70%: increase since 1970 in numbers of invasive alien species across 21 countries with detailed records
  • 30%: reduction in global terrestrial habitat integrity caused by habitat loss and deterioration
  • 47%: proportion of terrestrial flightless mammals and 23% of threatened birds whose distributions may have been negatively impacted by climate change already
  • >6: species of ungulate (hoofed mammals) would likely be extinct or surviving only in captivity today without conservation measures

Food and Agriculture

  • 300%: increase in food crop production since 1970
  • 23%: land areas that have seen a reduction in productivity due to land degradation
  • >75%: global food crop types that rely on animal pollination
  • US$235 to US$577 billion: annual value of global crop output at risk due to pollinator loss
  • 5.6 gigatons: annual CO2 emissions sequestered in marine and terrestrial ecosystems – equivalent to 60% of global fossil fuel emission
  • +/-11%: world population that is undernourished
  • 100 million: hectares of agricultural expansion in the tropics from 1980 to 2000, mainly cattle ranching in Latin America (+/-42 million ha), and plantations in Southeast Asia (+/-7.5 million ha, of which 80% is oil palm), half of it at the expense of intact forests
  • 3%: increase in land transformation to agriculture between 1992 and 2015, mostly at the expense of orests
  • >33%: world’s land surface (and +/-75% of freshwater resources) devoted to crop or livestock production
  • 12%: world’s ice-free land used for crop production
  • 25%: world’s ice-free land used for grazing (+/-70% of drylands)
  • +/-25%: greenhouse gas emissions caused by land clearing, crop production and fertilization, with animal-based food contributing 75% to that figure
  • +/-30%: global crop production and global food supply provided by small land holdings (<2 ha), using +/-25% of agricultural land, usually maintaining rich agrobiodiversity
  • $100 billion: estimated level of financial support in OECD countries (2015) to agriculture that is potentially harmful to the environment

Oceans and Fishing

  • 33%: marine fish stocks in 2015 being harvested at unsustainable levels; 60% are maximally sustainably fished; 7% are underfished
  • >55%: ocean area covered by industrial fishing
  • 3-10%: projected decrease in ocean net primary production due to climate change alone by the end of the century
  • 3-25%: projected decrease in fish biomass by the end of the century in low and high climate warming scenarios, respectively
  • >90%: proportion of the global commercial fishers accounted for by small scale fisheries (over 30 million people) – representing nearly 50% of global fish catch
  • Up to 33%: estimated share in 2011 of world’s reported fish catch that is illegal, unreported or unregulated
  • >10%: decrease per decade in the extent of seagrass meadows from 1970-2000
  • +/-50%: live coral cover of reefs lost since 1870s
  • 100-300 million: people in coastal areas at increased risk due to loss of coastal habitat protection
  • 400: low oxygen (hypoxic) coastal ecosystem ‘dead zones’ caused by fertilizers, affecting >245,000 km2
  • 29%: average reduction in the extinction risk for mammals and birds in 109 countries thanks to conservation investments from 1996 to 2008; the extinction risk of birds, mammals and amphibians would have been at least 20% greater without conservation action in recent decade
  • >107: highly threatened birds, mammals and reptiles estimated to have benefitted from the eradication of invasive mammals on islands

Forests

  • 45%: increase in raw timber production since 1970 (4 billion cubic meters in 2017)
  • +/-13 million: forestry industry jobs
  • 50%: agricultural expansion that occurred at the expense of forests
  • 50%: decrease in net rate of forest loss since the 1990s (excluding those managed for timber or agricultural extraction)
  • 68%: global forest area today compared with the estimated pre-industrial level
  • 7%: reduction of intact forests (>500 sq. km with no human pressure) from 2000-2013 in developed and developing countries
  • 290 million ha (+/-6%): native forest cover lost from 1990-2015 due to clearing and wood harvesting
  • 110 million ha: rise in the area of planted forests from 1990-2015
  • 10-15%: global timber supplies provided by illegal forestry (up to 50% in some areas)
  • >2 billion: people who rely on wood fuel to meet their primary energy needs

Mining and Energy

  • <1%: total land used for mining, but the industry has significant negative impacts on biodiversity, emissions, water quality and human health
  • +/-17,000: large-scale mining sites (in 171 countries), mostly managed by 616 international corporations
  • +/-6,500: offshore oil and gas ocean mining installations ((in 53 countries)
  • US$345 billion: global subsidies for fossil fuels resulting in US$5 trillion in overall costs, including nature deterioration externalities; coal accounts for 52% of post-tax subsidies, petroleum for +/-33% and natural gas for +/-10%

Urbanization, Development and Socioeconomic Issues

  • >100%: growth of urban areas since 1992
  • 25 million km: length of new paved roads foreseen by 2050, with 90% of construction in least developed and developing countries
  • +/-50,000: number of large dams (>15m height) ; +/-17 million reservoirs (>0.01 ha)
  • 105%: increase in global human population (from 3.7 to 7.6 billion) since 1970 unevenly across countries and regions
  • 50 times higher: per capita GDP in developed vs. least developed countries
  • >2,500: conflicts over fossil fuels, water, food and land currently occurring worldwide
  • >1,000: environmental activists and journalists killed between 2002 and 2013

Health

  • 70%: proportion of cancer drugs that are natural or synthetic products inspired by nature
  • +/-4 billion: people who rely primarily on natural medicines
  • 17%: infectious diseases spread by animal vectors, causing >700,000 annual deaths
  • +/-821 million: people face food insecurity in Asia and Africa
  • 40%: of the global population lacks access to clean and safe drinking water
  • >80%: global wastewater discharged untreated into the environment
  • 300-400 million tons: heavy metals, solvents, toxic sludge, and other wastes from industrial facilities dumped annually into the world’s waters
  • 10 times: increase in plastic pollution since 1980

Climate Change

  • 1 degree Celsius: average global temperature difference in 2017 compared to pre-industrial levels, rising +/-0.2 (+/-0.1) degrees Celsius per decade
  • >3 mm: annual average global sea level rise over the past two decades
  • 16-21 cm: rise in global average sea level since 1900
  • 100% increase since 1980 in greenhouse gas emissions, raising average global temperature by at least 0.7 degree
  • 40%: rise in carbon footprint of tourism (to 4.5Gt of carbon dioxide) from 2009 to 2013
  • 8%: of total greenhouse gas emissions are from transport and food consumption related to tourism
  • 5%: estimated fraction of species at risk of extinction from 2°C warming  alone, rising to 16% at 4.3°C warming
  • Even for global warming of 1.5 to 2 degrees, the majority of terrestrial species ranges are projected to shrink profoundly.

Global Goals

  • Most: Aichi Biodiversity Targets for 2020 likely to be missed
  • 22 of 44: assessed targets under the Sustainable Development Goals related to poverty, hunger, health, water, cities, climate, ocean and land are being undermined by substantial negative trends in nature and its contributions to people
  • 72%: of local indicators in nature developed and used by Indigenous Peoples and Local Communities that show negative trends
  • 4: number of Aichi Targets where good progress has been made on certain components, with moderate progress on some components of another 7 targets, poor progress on all components of 6 targets, and insufficient information to assess progress on some or all components of the remaining 3 targets

 

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