Is Global Warming Really Happening?
Plants in the Arctic tundra are growing taller because of climate change, according to new research from a global collaboration led by the University of Edinburgh. Anne D Bjorkman Plants in the Arctic are growing taller because of climate change, according to new research from a global scientific collaboration led by the University of Edinburgh.
While the Arctic is usually thought of as a vast, desolate landscape of ice, it is in fact home to hundreds of species of low-lying shrubs, grasses and other plants that play a critical role in carbon cycling and energy balance.
Now, Arctic experts have discovered that the effects of climate change are behind an increase in plant height across the tundra over the past 30 years.
As well as the Arctic's native plants growing in stature, in the southern reaches of the Arctic taller species of plants are spreading across the tundra. Vernal sweetgrass, which is common in lowland Europe, has now moved in to sites in Iceland and Sweden.
More than 60, data observations from hundreds of sites across the Arctic and alpine tundra were analysed to produce the findings, which were published in Nature today. Alpine sites in the European Alps and Colorado Rockies were also included in the study. The team assessed relationships between temperature, soil moisture and key traits that represent plants' form and function.
Plant height and leaf area were analysed and tracked, along with specific leaf area, leaf nitrogen content and leaf dry matter content, as well as woodiness and evergreenness. Surprisingly, only height was found to increase strongly over time. Plant traits were strongly influenced by moisture levels in addition to temperature.
Precipitation is likely to increase in the region, but that's just one factor that affects soil moisture levels.The report called Lake Hazen, which is located in Quttinirpaaq National Park, an ideal place for studying the impacts of recent climate change on Arctic freshwater ecosystems because it is so big, and, because the lake area has glaciers, tundra, wetlands and other aquatic ecosystems that are common throughout the North.
Polar bears (Ursus maritimus) are the poster child for the impacts of climate change on species, and justifiably rutadeltambor.com date, global warming has been most pronounced in the Arctic, and this trend is projected to continue.
There are suggestions that before mid-century we could have a nearly ice-free Arctic . Climate Change and the Arctic. The global climate is rutadeltambor.com impacts of climate change are being observed earlier in the Arctic, and with more immediate and severe consequences, than in most of the rest of the world.
The Arctic is warming at a rate almost twice the global average and reductions in Arctic sea-ice and permafrost and changes in weather are increasingly visible.
Canada and the U.S. are committed to collaborating with Indigenous and Arctic governments, leaders, and communities to more broadly and respectfully include Indigenous science and traditional knowledge into decision making, including in environmental assessments, resource management, and advancing our understanding of climate change and how.
Problems related to global warming and climate change in the Arctic include loss of habitat critical habitat for many species, rising sea levels for the world if sea ice and glaciers melt and a release of methane stored in permafrost, which could exacerbate climate change.
"The logic that climate change will do this is inescapable—the world is becoming warmer, and so heat waves like this are becoming more common." 'Unprecedented' Heat Wave Fueling Arctic Fires Made More Than Twice as Likely by Climate Change: Analysis.