NECSC Colloquium Webinars

The future fate of the Greenland and Antarctic Ice Sheets and implications for New England

October 5, 2016 - 3:30pm
Eastern Standard Time

New climate and ice-sheet modeling, calibrated to past changes in sea-level, is painting a stark picture of the future fate of the polar ice sheets if greenhouse gas emissions continue unabated. This is especially true for Antarctica, where a substantial fraction of the ice sheet rests on bedrock more than 500-meters below sea level. Here, we will explore the sensitivity of the great polar ice sheets to a warming atmosphere and ocean, and the potential for thresholds to be exceeded that could lead to drastic sea-level rise over coming decades and centuries.

FishTail: a decision support tool for assessing the conservation status of stream fish habitats in the NE CSC region

October 12, 2016 - 3:30pm
Eastern Standard Time

The intent of this webinar is to introduce a decision support tool that displays results of a stream fish habitat condition assessment for current and future time periods in the NE CSC region. To characterize current condition of stream habitats, we developed three indices based on fish species response to land use, water quality impairment, and stream fragmentation by large dams. Using these indices, streams were scored to reflect their risk of habitat degradation.

Framework for selecting climate models for impacts studies in the Northeast

November 16, 2016 - 3:30pm
Eastern Standard Time

Decisions pertaining to the management of natural resources in a changing climate rely heavily on climate change projections produced by dynamical models. While it is difficult to pick ‘best’ climate models from the climate modeling perspective, the impacts community is typically interested in using a handful of models in impacts research due to enormous computational and data storage costs. In this talk, I will describe a framework - a two-step process - developed to select a subset of credible climate models (global and downscaled) that can be used for impacts studies in the Northeast.

Projected expansion of the Southern Pine Beetle into northern forests

November 30, 2016 - 3:30pm
Eastern Standard Time

Abstract: Coming Soon

Radley Horton is an associate research scientist at the Center for Climate Systems Research at Columbia University. His research focuses on extreme weather events, the limitations of climate models, and adaptation to climate change. He currently teaches in Columbia University's Sustainable Development department.

The times they are a changing: Shifting phenology in Northeast coastal ecosystems

December 7, 2016 - 3:30pm
Eastern Standard Time

Climate change is causing species to shift their phenology, or the timing of recurring life events, in variable and complex ways. If these shifts differ among species, the result would be mismatches or asynchronies in food and habitat resources that impact individual fitness, population dynamics, and ecosystem function.  While climate change induced shifts in phenology have been well documented in terrestrial ecosystems, particularly relative to flowering plants and migratory song birds, studies of marine organisms have been limited.

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