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WWF - Half Of Plant And Animal Species At Risk From Climate Change In World's Most Important Natural Places
New report shows the Amazon, Miombo Woodlands in Southern Africa, and south-west Australia will be among the most affected places in the world
Scottish Government should ensure forthcoming Climate Change Bill ends our contribution to climate change in a generation.
Up to half of plant and animal species in the world’s most naturally rich areas, such as the Amazon and the Galapagos, could face local extinction by the turn of the century due to climate change if carbon emissions continue to rise unchecked. Even if the Paris Climate Agreement 2°C target is met, these places could lose 25% of their species according to a landmark new study by the University of East Anglia (UEA), the James Cook University, and WWF. , 
Published yesterday (Wed 14 March) in the journal Climatic Change and just ahead of WWF’s Earth Hour, the world’s largest environmental event, researchers examined the impact of climate change on nearly 80,000 plant and animal species in 35 of the world’s most diverse and naturally wildlife-rich areas. It explores a number of different climate change futures – from a no-emissions-cuts case in which global mean temperatures rise by 4.5°C, to a 2°C rise, the upper limit for temperature in the Paris Agreement. Each area was chosen for its uniqueness and the variety of plants and animals found there.
The report finds that the Miombo Woodlands, home to African wild dogs, south-west Australia and the Amazon-Guianas are projected to be some the most affected areas. If there was a 4.5°C global mean temperature rise, the climates in these areas are projected to become unsuitable for many of the plants and animals that currently live there meaning:
- Up to 90% of amphibians, 86% of birds and 80% of mammals could potentially become locally extinct in the Miombo Woodlands, Southern Africa
- The Amazon could lose 69% of its plant species
- In south-west Australia 89% of amphibians could become locally extinct
- 60% of all species are at risk of localised extinction in Madagascar
- The Fynbos in the Western Cape Region of South Africa, which is experiencing a drought that has led to water shortages in Cape Town, could face localised extinctions of a third of its species, many of which are unique to that region.
As well as this, increased average temperatures and more erratic rainfall could become be the “new normal” according to the report - with significantly less rainfall in the Mediterranean, Madagascar and the Cerrado-Pantanal in Argentina. Potential effects include ;
- Pressure on the water supplies of African elephants – who need to drink 150-300 litres of water a day
- 96% of the breeding grounds of Sundarbans tigers could become submerged by sea-level rise
- Comparatively fewer male marine turtles due to temperature-induced sex assignment of eggs.
If species can move freely to new locations then the risk of local extinction decreases from around 25% to 20% with a 2°C global mean temperature rise. If species cannot they may not be able to survive. Most plants, amphibians and reptiles, such as orchids, frogs and lizards cannot move quickly enough to keep up with these climatic changes.
Lead researcher Prof Rachel Warren from the Tyndall Centre for Climate Change Research at UEA said:
“Our research quantifies the benefits of limiting global warming to 2°C for species in 35 of the world’s most wildlife-rich areas. We studied 80,000 species of plants, mammals, birds, reptiles and amphibians and found that 50% of species could be lost from these areas without climate policy. However, if global warming is limited to 2°C above pre-industrial levels, this could be reduced to 25%. Limiting warming to within 1.5°C was not explored, but would be expected to protect even more wildlife.”
Overall the research shows that the best way to protect against species loss is to keep global temperature rise as low as possible. The Paris Agreement pledges to reduce the expected level of global warming from 4.5°C to around 3°C, which reduces the impacts, but we see even greater improvements at 2°C; and it is likely that limiting temperature rise to 1.5°C would protect more wildlife.
This is why on Saturday 24 March at 8.30pm millions of people across the world will come together for Earth Hour  to show their commitment to reducing global emissions and protecting people and wildlife from the impacts of climate change. The event also sends a clear message to business and government that there is a global will to change this trajectory.
Dr Sam Gardner, Acting Director of WWF Scotland said:
“Within our children’s lifetime, places like the Amazon and Galapagos Islands could become unrecognisable, with half the species that live there wiped out by human-caused climate change. Around the world, beautiful iconic animals like Amur tigers or Javan rhinos are at risk of disappearing, as well as tens of thousands of plants and smaller creatures that are the foundation of all life on earth. That is why this Earth Hour we are asking everyone to make a promise for the planet and make the everyday changes needed to protect our planet.
“Scotland has an important role to play in helping restore our fragile environment and wildlife, that’s why we’re calling on the Scottish Government to ensure that the forthcoming Climate Change Bill ends our contribution to climate change in a generation. This commitment will match that of other nations in the vanguard of climate leadership and help to build the momentum we need if we are to prevent the worst impact of climate change on our most precious species.”
What individual species will experience:
- Orang-Utans have a solitary life-style which allows them to move to cope with reduced food availability due to changing climates. However, females are strictly bound to their territories, which will prevent them from moving, and can put them at risk as there is a general reduction in available forest habitat due to deforestation, climate change and other human pressures
- Snow leopards already live under extreme conditions with very little margin for changes which makes them particularly sensitive to changes in climate. Their habitat will shrink by 20% due to climate change and will put them into greater direct competition over food and territory with the common leopard, which will likely lead to a further decline in numbers.
- Tigers live in highly fragmented landscapes and will be greatly impacted by further climate-induced habitat loss. For example, projected sea level rise will submerge 96% of breeding habitat for the Sundarbans tigers, and Amur tigers are unlikely to persist to the next century if the size and quality of their habitat is reduced.
- Polar bears are among the most sensitive to climate change because they depend on sea ice to live and eat. Younger polar bears that are not as practiced hunters are particularly affected by food shortages due to shrinking sea ice. Polar bears in some areas are already in decline - for example, the population in Hudson Bay has been already reduced by 22% - and are predicted to sharply decline by the end of the 21st century due to climate change.
- Marine Turtles are highly sensitive to climate warming. While adults have been known to move to avoid too warm waters, a changing climate will impact greatly on their offspring. Tortoises and turtles are among the species with temperature-dependent sex determination. Warmer temperatures will produce more females resulting in a dangerous sex bias. Also increased flooding will increase egg mortality and warmer sand will also produce smaller and weaker hatchlings.
Notes to the editor
1. The research has been peer-reviewed and published 14 March 2018 in the academic journal Climatic Change. The reference is The implications of the United Nations Paris Agreement on Climate Change for Globally Significant Biodiversity Areas by Warren, R.1, Price, J., VanDerWal, J., Cornelius, S., Sohl, H.
2. WWF has produced a summary report of the research titled ‘Wildlife in a Warming World’ https://www.wwf.org.uk/sites/default/files/2018-03/WWF_Wildlife_in_a_Warming_World.pdf
3. The research published in Climatic Change was summarised from a 5-part report commissioned by WWF and led by Dr. Jeff Price. This report includes a literature review on the effects of climate change on individual species led by Dr. Amy McDougall (formerly UEA).
4. The models used in this research come from the Wallace Initiative (http://wallaceinitiative.org), a near decade long partnership between the Tyndall Centre at UEA (UK), eResearch at James Cook University (Australia), the Global Biodiversity Information Facility and World Wildlife Fund.
5. Earth Hour, organised by WWF, is the global event inspiring millions across the world to take action and make a promise to protect our brilliant planet, our home. Right now we’re facing some of the biggest environmental threats ever seen. We’re the first generation to experience the effects of climate change – and we’re the last to be able to change it. We’re seeing our oceans suffocated by plastic and over-consumption decimate our forests, the lungs of the earth. Earth Hour shows what we can achieve when we all come together. Last year in the UK over 9 million people took part, along with over 6,000 schools, 1,700 youth groups, 300 landmarks and thousands of businesses and organisations. Iconic landmarks including Edinburgh Castle, The Kelpies, The Forth Rail Bridge, Urquhart Castle and many more joined the global switch off. Globally, from Samoa to Tahiti, a record 187 countries and territories took part in the world’s biggest Earth Hour yet. The support for Earth Hour and WWF’s work more broadly has influenced climate policy, facilitated climate-friendly laws, such as a ban on plastic in the Galapagos Islands and supported the world’s first Earth Hour forest in Uganda. Find out more http://wwfscotland.org.uk/earthhour
6. WWF is one of the world’s largest and most respected independent conservation organizations, with over 5 million supporters and a global network active in over 100 countries. WWF's mission is to stop the degradation of the Earth's natural environment and to build a future in which humans live in harmony with nature, by conserving the world's biological diversity, ensuring that the use of renewable natural resources is sustainable, and promoting the reduction of pollution and wasteful consumption.
7. The University of East Anglia (UEA) is a UK Top 15 university. Known for its world-leading research and outstanding student experience, it was awarded Gold in the Teaching Excellence Framework. UEA is a leading member of Norwich Research Park, one of Europe’s biggest concentrations of researchers in the fields of environment, health and plant science. http://www.uea.ac.uk
8. The Tyndall Centre for Climate Change Research is an active and expanding partnership between the Universities of East Anglia (headquarters), Cambridge, Cardiff, Manchester, Newcastle, Oxford, Southampton, Sussex, and recently Fudan University in Shanghai. It conducts research on the interdisciplinary aspects of climate change and is committed to promote informed and effective dialogue across society about the options to manage our future climate. http://www.tyndall.ac.uk
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