how does the climate change affect biodiversity?
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Healthy ecosystems and rich biodiversity are fundamental to life on our planet. Climate change is affecting the habitats of several species, which must either adapt or migrate to areas with more favourable conditions. Even small changes in average temperatures can have a significant effect upon ecosystems.
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In addition to increasing global temperatures, the impacts of climate change include extreme weather events such as drought, hurricanes and rising sea levels. ... In addition to increased rates of disease and degraded habitats, climate change is also causing changes in species themselves, which threaten their survival.
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Colder temperatures will have little net effect because they reduce both birth and mortality rates. However, warmer temperatures will decrease the birth rate and increase the mortality rate, leading to a strong negative effect on the temperate species' per capita growth rate and hence its abundance.
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Climate change will likely alter the frequency and intensity of forest disturbances, including wildfires, storms, insect outbreaks, and the occurrence of invasive species. The productivity and distribution of forests could be affected by changes in temperature, precipitation and the amount of carbon dioxide in the air.
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The impacts of climate change on our oceans include shifts in temperature, acidification, deoxygenation and changes in ocean currents. ... Shifting ocean currents and warming waters are changing the distribution of fish stocks and altering the structure of ecosystems.
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As climate conditions shift geographically so will the distributions of many plants and animals. The relatively flat terrain of grasslands increases vulnerability to climate change impacts, because habitats and species must migrate long distances to compensate for temperature shifts.
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Climate change can alter where species live, how they interact, and the timing of biological events, which could fundamentally transform current ecosystems and food webs. Climate change can overwhelm the capacity of ecosystems to mitigate extreme events and disturbance, such as wildfires, floods, and drought.
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Climate change has affected the global distribution of vegetation from the distant past and will likely affect it into the future. ... The geographical distribution of the vegetation communities and their relationship with the climate has been examined with biogeographical models or biome models.
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The importance of biodiversity in forests could increase due to climate change. ... The wood grown in forests is used in our houses for furniture, roof timbers and flooring; forests store carbon from the air and thus counteract climate change, and they help prevent soil erosion and regulate the water cycle.
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Climate change affects human health and wellbeing through more extreme weather events and wildfires, decreased air quality, and diseases transmitted by insects, food, and water.
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Climate change due to human activity has a direct impact on marine species. It alters their abundance, diversity and distribution. Their feeding, development and breeding, as well as the relationships between species are affected. Rising temperatures lead to different behaviour patterns according to species.
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Impacts of climate change on our natural resources Climate change presents challenges for our air, water, lands, homes and businesses. ... reduced water levels that may eliminate wetlands or affect their ability to reduce erosion, filter contaminants, and provide fish and wildlife habitat.
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The study concluded that climate change can redistribute the strength of ecological interactions between predator and prey species. The results show that higher temperatures and a more stable climate with less seasonal variability lead to more intense predation pressure.
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Important direct drivers affecting biodiversity are habitat change, climate change, invasive species, overexploitation, and pollution (CF4, C3, C4. 3, S7).
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Climate change could alter ocean food chains, leading to far fewer fish in the sea. Climate change is rapidly warming the Earth and altering ecosystems on land and at sea that produce our food. ... But as this happens, it will change ocean circulation patterns and make ocean food chains less productive.
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Key points in this POSTnote include: Climate change drives changes in marine ecosystems that affect fisheries' productivity and food security. ... These changes are altering the distribution, abundance and health of commercial fish species, and the marine ecosystems on which they depend.
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Climate change is accelerating the sixth extinction World biodiversity has declined alarmingly in half a century: more than 25,000 species, almost a third of those known, are in danger of disappearing. Climate change will be responsible for 8% of these.