Field Talk » Trees http://www.esa.org/fieldtalk audio interviews go into the field with ecologists Thu, 18 Apr 2013 22:08:18 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 2006-2007 podcast@esa.org (ESA Podcast) podcast@esa.org (ESA Podcast) ESA, Ecology, Environment, Beyond Frontier, Field Talks, The Ecologist Goes to Washington 1440 http://www.esa.org/podcast/images/esa_podcast_small.jpg Field Talk http://www.esa.org/fieldtalk 144 144 ESA Podcast: Field Talks, Beyond the Frontier, The Ecologist Goes to Washington Field Talk explores research results – and the stories of the ecologists behind them – from three of the Society’s journals: Ecology, Ecological Applications, and Ecological Monographs. ESA, Podcast, Field, Talks, Ecology, Environment, Frontiers, Environmental, Science, Ecological, Society, of ESA Podcast ESA Podcast podcast@esa.org no no Changing climate, changing landscape: monitoring the vast wilderness of interior Alaska http://www.esa.org/fieldtalk/changing-climate-changing-landscape-monitoring-the-vast-wilderness-of-interior-alaska/ http://www.esa.org/fieldtalk/changing-climate-changing-landscape-monitoring-the-vast-wilderness-of-interior-alaska/#comments Thu, 28 Mar 2013 19:17:43 +0000 liza http://www.esa.org/fieldtalk/?p=235 Reds and golds of Fall. Broadleaf shrubs flame around the ever-green of conifers in the Toklat basin ecoregion of Denali National Park. Credit, Tim Rains, Denali National Park and Preserve, 2011.

Reds and golds of Fall. Broadleaf shrubs flame around the ever-green of conifers in the Toklat basin ecoregion of Denali National Park. Credit, Tim Rains, Denali National Park and Preserve, 2011.

 

National Park Service plant ecologist Carl Roland lives in Alaska, where climate change is palpably present. Ecologists have predicted major landscape-scale changes in the future of the Alaskan interior, with a potential shift from the iconic black and white spruce boreal forest, to broadleaf trees, or even grasslands, through a combination of heat, drought, insect outbreaks, and more frequent wildfires.

But predicting the future is not simple, not when you’re talking about landscapes as large and varied as the Alaskan Interior.

Carl and his colleagues in the Alaska National Park Service’s Inventory and Monitoring program have established ongoing ecosystem assessment across the Central Alaska Network encompassing Denali, Wrangell-Saint Elias, and Yukon-Charley Rivers National Parks and Preserves.

They have just published the first chunk of data in the February issue ESA’s journal Ecological Monographs, reporting a decade of data from Denali on the distribution and abundance of southcentral Alaska’s six tree species. They established over 1000 permanent sample sites spread across 1.28 million hectares of the north side of the park, hiking into remote locations, scrambling rocky slopes and wading mountain ponds to reach randomized plots. Carl tells Liza Lester why he thinks white spruce may expand higher up mountain slopes and into thawing tundra, while the cold-loving black spruce might lose ground. He describes his efforts to make National Park Service data more accessible, and makes a plea for the complementarity of academic and government science.

Click over to ESA’s blog, EcoTone, for more photos and experimental detail. Read more about the science of Denali’s changing landscape on the NPS Alaska Regional Office website.

Landscape-scale patterns in tree occupancy and abundance in subarctic Alaska. (2013) Carl Albert Roland, Joshua H. Schmidt, and E. Fleur Nicklen. Ecological Monographs 83(1):19-48.

]]> http://www.esa.org/fieldtalk/changing-climate-changing-landscape-monitoring-the-vast-wilderness-of-interior-alaska/feed/ 1 0:32:40 First ten years of data from an ongoing monitoring effort sets a baseline for modeling and forestry management in Denali National Park and Preserve. National Park Service plant ecologist Carl Roland lives in Alaska, where climate change is palpably present. Ecologists have predicted major landscape-scale changes in the future of the Alaskan interior, with a potential shift from the iconic black and white spruce boreal forest, to broadleaf trees, or even grasslands, through a combination of heat, drought, insect outbreaks, and more frequent wildfires. But predicting the future is not simple, not when you’re talking about landscapes as large and varied as the Alaskan Interior. Carl tells Liza Lester why he thinks white spruce may expand higher up mountain slopes and into thawing tundra, while the cold-loving black spruce might lose ground. He describes his efforts to make National Park Service data more accessible, and makes a plea for the complementarity of academic and government science. ESA Podcast no no The Sacrificial Sibling Hypothesis http://www.esa.org/fieldtalk/field-talk-the-sacrificial-sibling-hypothesis/ http://www.esa.org/fieldtalk/field-talk-the-sacrificial-sibling-hypothesis/#comments Tue, 03 Mar 2009 16:00:13 +0000 liza http://www.esa.org/fieldtalk/?p=61 The success of an animal or plant is determined by how many offspring it Jaboury Ghazoul of the Swiss Federal Institute of Technology in Zurich, Switzerlandproduces. But in some cases, not all offspring are created equal. In the February edition of Field Talk, Jaboury Ghazoul of the Swiss Federal Institute of Technology in Zurich, Switzerland, describes how some species of trees invest resources in seeds that cannot produce viable offspring. His paper in the February issue of Ecology shows that when seed predators are abundant, investment in decoy seeds – or “sacrificial siblings” – can increase a plant’s chances of producing successful progeny.

]]> http://www.esa.org/fieldtalk/field-talk-the-sacrificial-sibling-hypothesis/feed/ 0 0:10:45 The success of an animal or plant is determined by how many offspring it produces. But in some cases, not all offspring are created equal. In the February edition of Field Talk, Jaboury Ghazoul of the Swiss Federal Institute of Technology in Zurich[...] The success of an animal or plant is determined by how many offspring it produces. But in some cases, not all offspring are created equal. In the February edition of Field Talk, Jaboury Ghazoul of the Swiss Federal Institute of Technology in Zurich, Switzerland, describes how some species of trees invest resources in seeds that cannot produce viable offspring. His paper in the February issue of Ecology shows that when seed predators are abundant, investment in decoy seeds – or “sacrificial siblings” – can increase a plant’s chances of producing successful progeny. ESA Podcast no no