Por iniciativa da Profa. Inara Leal (PPGBV e PPGBA) teremos a oportunidade de assistir a três palestras na manhã do dia 27/11/2013, no Anfiteatro 13 do CCB/UFPE. Os palestrantes estão no Brasil para efetivar colaboração internacional e participar do Simpósio de Mirmecologia: an International Ant Meeting (1-6/12/2013, Fortaleza, CE). Compartilhem e divulguem!
Títulos das palestras e horarios (resumos mais abaixo):
9:00 - Fire management in Australian tropical savannas: biodiversity, greenhouse gas abatement and Indigenous livelihoods
Palestrante: Dr. Alan Andersen -
Pesquisador-Chefe do Tropical Ecosystems Research Centre, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Darwin, Austrália – Home-page: http://goo.gl/M0BDmf
10:00 - Testing the importance of climate in controlling the distribution of savannas in South Africa vs. Argentina
Palestrante: Dr. William Bond
Professor no Department of Botany, University of Cape Town, Cidade do Cabo, África do Sul– Home-page: http://goo.gl/O59BpX
11:00 - Genetics of social behavior in ants
Palestrante: Dr. Laurent Keller
Professor no Department of Ecology and Evolution, Faculté de Biologie et de Médecine, Université de Lausanne, Lausanne, Suiça – Home-page: http://goo.gl/KwqIas
Fire management in Australian tropical savannas: biodiversity, greenhouse gas abatement and Indigenous livelihoods - Dr. Alan Andersen
Anthropogenic burning has been a dominant feature of the vast savanna landscapes of northern Australia for more than 50 000 years, with currently about 400 000 km2 burned each year. Traditional Aboriginal burning has been severely disrupted following European colonisation, which has seen Aboriginal people move off their traditional estates into regional towns. Fire is now largely unmanaged across large regions, and this has resulted in fire regimes dominated by extensive, high-intensity fires occurring late in the dry season. There is widespread concern that such fire regimes are seriously degrading regional biodiversity values, and in particular are contributing to the dramatic population declines in many small mammals that have occurred across northern Australia in recent decades. It is likely that fire is interacting with other threatening processes, especially by increasing rates of predation by feral cats. Savanna burning makes a significant contribution to Australia’s greenhouse gas emissions, and there is growing interest in reducing fire extent and severity in a Greenhouse gas abatement context. In addition to improving biodiversity management, this has the potential to transform regional economies in northern Australia, especially by providing culturally appropriate livelihood opportunities for remote Aboriginal communities where mainstream economies are very limited. CSIRO has formed a partnership with the Aboriginal people of the Tiwi Islands north of Darwin to examine the biophysical, economic and social potential of fire management for Greenhouse gas abatement on the Tiwi Islands. The Tiwi Carbon Study features a major new long-term fire experiment, where Tiwi land management rangers are working with CSIRO scientists to document the effects of experimental fires on carbon sequestration and biodiversity. Combined with social research on the willingness and capacity of Tiwi people to change current fire management practices, results will be used to develop an integrated Tiwi fire management plan that best meets the cultural, environmental and economic aspirations of Tiwi people.
Testing the importance of climate in controlling the distribution of savannas in South Africa vs. Argentina - Dr. William Bond
It is widely believed that the distribution of savannas, along with other major biomes of the world, is primarily determined by climate. We tested the importance of climate in determining savanna distribution by developing a climate envelope model for South African savannas. We then used the model to predict where savannas should occur in northern Argentina, which shares a similar semi-arid to mesic climate and latitudinal range to South Africa. Contrary to model predictions, most of the vegetation predicted to be savanna in Argentina is dry deciduous ‘forest’ (‘chaco’). We explore other factors that may explain the striking non-convergence of sub-tropical vegetation on the two continents. The poor performance of climate in predicting spatial patterns of savannas in a different region undermines confidence in simple climate-based predictions of the future distribution of South African savannas under global change.
Genetics of social behavior in ants - Dr. Laurent Keller
I will present data showing strong interaction between the environment and a single genetic element on social organization in the fire ant Solenopsis invicta
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