Carnegie Science News - Department of Global Ecology

Tuesday, September 7, 2010

Mediante la integración de mapeo satélital, tecnología láser aerotransportada, y estudios a nivel de parcelas, los científicos de la Institución Carnegie Departamento de Ecología de Global, con colegas del Fondo Mundial para la Naturaleza WWF y en coordinación con el Ministerio Peruano del Ambiente (MINAM), han revelado los primeros mapas de alta resolución de carbono almacenado en la vegetación de bosques tropicales y emitido por prácticas de uso de la tierra. Estos nuevos mapas marcan el camino para el monitoreo preciso de el almacenamiento de carbono y emisiones en el marco de la propuesta de las Naciones Unidas para la Reducción de Emisiones por Deforestación y Degradación (REDD).

Tuesday, September 7, 2010

With Video

Using sophisticated airborne imaging and structural analysis, scientists at the Carnegie Institution’s Department of Global Ecology mapped more than 40,000 termite mounds over 192 square miles in the African savanna. They found that their size and distribution is linked to vegetation and landscape patterns associated with annual rainfall. The results reveal how the savanna terrain has evolved and show how termite mounds can be used to predict ecological shifts from climate change.

Tuesday, September 7, 2010

With Video
By integrating satellite mapping, airborne-laser technology, and ground-based plot surveys, scientists from the Carnegie Institution’s Department of Global Ecology, with colleagues, have revealed the first high-resolution maps of carbon locked up in tropical forest vegetation and emitted by land-use practices. These new maps pave the way for accurate monitoring of carbon storage and emissions for the United Nations initiative on Reduced Emissions from Deforestation and Degradation (REDD). Spanish version

Thursday, August 5, 2010

With Video
By 2100 only 18% to 45% of the plants and animals making up ecosystems in global, humid tropical forests may remain as we know them today, according to research led by Greg Asner at the Department of Global Ecology. It is the first study to combine effects from new deforestation and selective logging data with climate-change projections for all humid tropical forest ecosystems. The research will help conservationists pinpoint their activities more effectively.

Tuesday, July 13, 2010

With Video
A tiny, little-understood plant pore has enormous implications for weather forecasting, climate change, agriculture, hydrology, and more. A study by scientists at the Department of Global Ecology has now overturned the conventional belief about how these important structures called stomata regulate water vapor loss from the leaf–a process called transpiration. They found that radiation is the driving force of physical processes deep within the leaf.

Friday, July 2, 2010

With Video
With carbon dioxide in the atmosphere approaching alarming levels, even halting emissions altogether may not be enough to avert catastrophic climate change. Could scrubbing carbon dioxide from the air be a viable solution? A new study by scientists at the Carnegie Institution suggests that while removing excess carbon dioxide would cool the planet, keeping carbon dioxide at low levels would require a long-term commitment spanning decades or even centuries.

Monday, June 28, 2010

With Video
One proposed emergency fix for global warming is to seed clouds over the ocean to make them more reflective, reducing the solar radiation absorbed by the Earth. But the scheme could also change global rainfall patterns, raising concerns of water shortages on land. A new study by the Carnegie Institution, with the Indian Institute of Science, suggests that the scheme could actually increase monsoonal rains and cause continents to become wetter, not drier, on average.

Monday, June 14, 2010

With Video
The Green Revolution of the late 20th century increased crop yields worldwide and helped feed an expanding global population. According to a new report published in the Proceedings of the National Academy of Sciences, it also has helped keep greenhouse gas emissions at bay. The researchers estimate that since 1961 higher yields per acre have avoided the release of nearly 600 billion tons of carbon dioxide to the atmosphere.

Sunday, May 2, 2010

With Video
Trees and other plants help keep the planet cool, but rising levels of carbon dioxide in the atmosphere are turning down this global air conditioner. According to a new study by researchers at the Carnegie Institution for Science, in some regions more than a quarter of the warming from increased carbon dioxide is due to its direct impact on vegetation. This warming is in addition to carbon dioxide’s better-known effect as a heat-trapping greenhouse gas. For scientists trying to predict global climate change in the coming century, the study underscores the importance of including plants in their climate models.

Monday, April 19, 2010

Chris Field, director of the Carnegie’s Department of Global Ecology, is among the scientists elected this year to the American Academy of Arts and Sciences. The Academy, one of the world’s most prestigious honorary societies, cited Field for his research in global ecology and contributions to the assessment and understanding of climate change