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丹麦奥胡斯大学Jens-Christian Svenning 教授和Peder Klith Bøcher 高级工程师两场学术报告

发布日期:2017-03-30   作者:   浏览次数

讲座题目:Long-term biodiversity-climate disequilibria  - a macroecological perspective

主 讲 人:Jens-Christian Svenning 教授(丹麦奥胡斯大学)

主 持 人:张健 教授

开始时间:2017-3-30(周四)上午8:30

讲座地址:资环楼435 会议室

主办单位:生态与环境科学学院 科技处

报告人简介:Jens-Christian Svenning是丹麦奥胡斯大学生命科学系教授,丹麦科学院院士,国际生物地理学协会终身会员,主要从事生态信息学和生物多样性的研究。自1999年以来已经发表100多篇期刊论文,其中多篇发表在Science上,此外发表的期刊还包括PNAS、Nature Climate Change、Ecology Letters等。2011年获得全球生物多样性信息机构(GBIF)颁发的第10 届Ebbe Nielsen 奖。

报告摘要: Climate has varied dramatically in the past, within ongoing cooling during the last 30 million and strong glacial-interglacial oscillations across the last 2.6 million years (the Quaternary) having had strong impacts on biodiversity, e.g.., regional extinctions and range shifts. A key question is whether species distribution and local species diversity (s.l.) have been able to track these changes to remain in equilibrium in climate or, if not, how widespread across space and time disequilibrium dynamics have been. My research group’s macroecological work has shown that long-term (10^4 year or more) climatic disequilibria are widespread across regions and organism groups not only in species distributions and richness, but also penetrating to functional diversity and ecosystem functioning.

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讲座题目:The application of freely available satellite images for mapping a human-wildlife conflict in Maasai Mara, Kenya

主 讲 人:Peder Klith Bøcher 高级工程师(丹麦奥胡斯大学)

主 持 人:张健 教授

开始时间:2017-3-30(周四)上午9:30

讲座地址:资环楼435 会议室

主办单位:生态与环境科学学院 科技处

报告人简介:Peder Klith Bøcher是丹麦奥胡斯大学生命科学系高级工程师,主要从事生态信息学、植被遥感和生物多样性的研究。已经发表30多篇期刊论文,其中多篇发表在Remote Sensing of Environment、Global Ecology and Biogeography等上。

报告摘要: The Greater Mara ecosystem in Kenya together with the Serengeti plain in Tanzania hosts the largest and most species diverse migrations of large mammals in the world, including 1.3 million wildebeests, 200,000 zebras and hundreds of thousands of Thomson’s gazelles.

It is also the home for the famous Maasai tribes, which traditionally lived a semi-nomadic pastoralistic life that has been relatively well suited for the wildlife in the area. This situation has changed dramatically with the introduction of private land ownership, sedetarization, coupled with a significant increase in the human population. During the past few years a problem with fencing of private land parcels has started to occur and has lately been reported to having increased strongly. The problem of fencing is that this will hinder the wildlife migrations that are a key function of the ecosystem. I will present the results of a fine-scale mapping of fences in the area based on Landsat satellite imagery from 1985 – 2016. We can show that even though imagery provides a conservative estimate, some areas within the regions has reached a level where fencing covers > 85% of all available land, and that since 2010 the general picture is that the rate of fencing is increasing dramatically.