Tag Archives: ecology

Creating a ‘Safe Space’ for Iconic Ecosystems

While the Brazilian government has dramatically curtailed deforestation, further efforts to slow the damage from logging would make the forest more resilient to another threat: climate change. Photo: David Funkhouser

While the Brazilian government has dramatically curtailed deforestation, further efforts to slow the damage from logging would make the forest more resilient to another threat: climate change. Photo: David Funkhouser

Important global ecosystems like the Amazon rainforest and Great Barrier Reef are in danger of breaking down because of a combination of local pressures and climate change, but better local management could help make these areas more resilient, say the authors of a paper published by Science.

Ecosystems may show only a slight response to changing climate until they hit a tipping point, when even small changes could bring about a collapse. The paper’s authors contend that improving local conditions could forestall the impacts of climate change, perhaps more effectively than global efforts to curb the greenhouse gas emissions driving the warming.

While local governments have made some progress in protecting important ecosystems, the areas are still under increasing threats from development, land-clearing, overfishing and fertilizer pollution. The authors say that local stewardship of the areas “is at risk of failing.”

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Study Finds Genetic Clues to How Plants Adapt to Climate

Arabidopsis thaliana, a flowering plant frequently studied by biologists, has climate-sensitive genes whose expression was found to evolve. Photo: Penn State

Arabidopsis thaliana, a flowering plant frequently studied by biologists, has climate-sensitive genes whose expression was found to evolve. Photo: Penn State

Using supercomputers to analyze hundreds of thousands of genetic markers in a thousand plant samples, scientists say they have found how a common weed uses its genetic code to adapt to changes in its environment such as cold temperatures and drought.

The findings add to our knowledge of how plant life evolves, and could be used to help breed crops that are more adaptable to climate change, the researchers say.

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