Tag Archives: climate change

Where Have All the Flowers Gone?

*High-mountain wildflower season reduced, affecting pollinators like bees, hummingbirds*

It’s summer wildflower season in the Rocky Mountains, a time when high-peaks meadows are dotted with riotous color.

But for how long?

Once, wildflower season in montane meadow ecosystems extended throughout the summer months. But now scientists have found a fall-off in wildflowers at mid-season. (more…)

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With Global Warming, Arctic Access Will Diminish By Land But Improve By Sea

Global warming over the next 40 years will cut through Arctic transportation networks like a double-edged sword, limiting access in certain areas and vastly increasing it in others, a new UCLA study predicts.

“As sea ice continues to melt, accessibility by sea will increase, but the viability of an important network of roads that depend on freezing temperatures is threatened by a warming climate,” said Scott Stephenson, a UCLA graduate student in geography and the study’s lead author. (more…)

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Clouds, a Weapon Against Climate Change?

University of Georgia researchers define a missing link in how clouds are formed

Some clouds cool the earth. But how are these clouds formed? How does the chemistry of the ocean affect their formation? Is this process affected by climate change? Can humans affect cloud formation to increase the cooling effect of clouds, having positive implications for the health of the planet? (more…)

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Uncertain Future for Joshua Trees Projected with Climate Change

FLAGSTAFF, Ariz. — Temperature increases resulting from climate change in the Southwest will likely eliminate Joshua trees from 90 percent of their current range in 60 to 90 years, according to a new study led by U.S. Geological Survey ecologist Ken Cole.

The research team used models of future climate, an analysis of the climatic tolerances of the species in its current range, and the fossil record to project the future distribution of Joshua trees. The study concludes that the species could be restricted to the northernmost portion of its current range as early as the end of this century. Additionally, the ability of Joshua trees to migrate via seed dispersal to more suitable climates may be severely limited. (more…)

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Think Globally, but Act Locally When Studying Plants, Animals, Global Warming, Researchers Advise

AUSTIN, Texas — Global warming is clearly affecting plants and animals, but we should not try to tease apart the specific contribution of greenhouse gas driven climate change to extinctions or declines of species at local scales, biologists from The University of Texas at Austin advise.

Camille Parmesan, Michael C. Singer and their coauthors published their commentary online this week in Nature Climate Change.

“Yes, global warming is happening. Yes, it is caused by human activities. And yes, we’ve clearly shown that species are impacted by global warming on a global scale,” says Parmesan, associate professor of integrative biology. (more…)

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Reframing Climate Change: It’s as Much Cultural as Scientific

ANN ARBOR, Mich.— While debate on climate change often strikes a caustic tone, the real impediment to meaningful dialogue is that the two sides often talk past each other in what amounts to a “logic schism,” says a University of Michigan researcher.

“In a logic schism, a contest emerges in which opposing sides are debating different issues, seeking only information that supports their position and disconfirms their opponents’ arguments,” said Andy Hoffman, the Holcim (U.S.) Professor of Sustainable Enterprise at U-M’s Ross School of Business and School of Natural Resources and Environment. “Each side views the other with suspicion, even demonizing the other, leading to a strong resistance to any form of engagement, much less negotiation and concession.” (more…)

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