Tag Archives: landscape

Study Says Amazon Biodiversity Faces New Adversary: Hydroelectric Dams : SCIENCE : Tech Times

… Anglia conducted the study by assessing the patterns at which medium and large populations of arboreal and terrestrial vertebrates—35 species of birds, tortoises and mammals—would react to an environment that had undergone 26 years of archipelagic changes. Such modifications include changes in habitat quality and landscape formation in a large hydroelectric facility located in the Central Amazonia. The facility where they conducted their biodiversity surveys is called the Balbina Dam, which …

Global warming leads to hybrids driving species loss

By Jayalakshmi K | June 2, 2015 Organisms are liberally exchanging genes with other species to create hybrid species, thanks to global warming. In the process, many species are dying out. Interbreeding is a natural process and even modern humans are the product of such genetic exchange with the Neanderthals. But climate change is accelerating the trend by changing the landscape, warn researchers. The changing habitats are bringing together species that never interbred before. Grizzly bears and …

World at risk of ’empty landscape’ as biggest herbivores face extinction

By Hannah Osborne | May 1, 2015 The planet is at risk of becoming an “empty landscape”, with the world’s biggest herbivore populations rapidly declining. Researchers looked at 74 species of the world’s biggest herbivores (weighing over 100kg) and analysed data such as endangerment status, key threats and ecological consequences of population declines. Findings paint a bleak picture, with Africa and parts of Asia particularly at risk of becoming barren of these species, …

New perspectives on how ecological communities are assembled | MSUToday | Michigan State University

… Ecology and Evolution, and together they have come up with a new way to think about how evolution and ecology interact in community assembly. The MSU team is suggesting that a stronger focus should be placed on how species that evolved in in isolation eventually move across the landscape and can coexist in the same region, and the feedbacks between local and regional processes. Only then, they argue, can we fully understand community development and the importance of dynamic species pools. “We …

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