The forests of the Northeastern United States are home to some of the greatest diversity of nesting songbirds in the country. Climate change, shifts in natural disturbance regimes, and invasive species pose threats to forest habitats and bird species in the northeastern United States and represent major challenges to natural resource managers.   Although broad adaptation approaches have been suggested for sustaining forested habitats under global change, it is unclear how effective the implementation of these strategies at local and regional scales will be for maintaining habitat conditions for a broad suite of forest-dependent bird species over time. Moreover, given the diversity in forest stakeholders across the Northeast region, it is unclear if the adaptation science needs for these stakeholders are fully captured by existing adaptation recommendations

Forests play a role in air quality by supplying the atmosphere with volatile organic compounds (VOCs), precursors to ozone and aerosols. Different tree types emit different VOCs, each with different capacity to form ozone and aerosols. Therefore, shifts in forest composition may impact ozone and aerosol yields. Climate change is one of the expected drivers of forest change. In particular, the current range boundaries of a variety of species are expected to shift northward. The impacts of these climate-induced shifts in forest composition on air quality, particularly VOC emissions and subsequent ozone and aerosol formation, is little understood. This project aims to explore the relative contribution of shifts in approximately 25 tree species to changes in the VOC, ozone, and aerosol environment using a suite of high-resolution models

Climate change is shifting the hydrodynamics and temperature of both the Great Lakes and their tributary rivers.  Both hydrology and temperature may play potent roles in mediating the magnitude of watershed nutrient load and their fate upon reaching the lake.  Tributary hydrology reflects the source of water (groundwater vs. surface runoff) and seasonal timing of discharge, while tributary temperature determines the density difference between river and lake water.  Similarly, mixing patterns in these massive lakes strongly influence whether tributary loads remain near the shore or become diluted in the open water, while the thermal profile determines whether inflowing river water is trapped at the surface, sinks to the bottom, or stays at an intermediate depth.  These physical interactions are critical for understanding the ecological impact of tributary loads, and how it is mediated by climate change

This study set out to answer the question: “What data and modeling frameworks are needed to provide scientists reliable, climate-informed, water temperature estimates for freshwater ecosystems that can assist watershed management decision making?”  To accomplish this, the study gathered existing stream temperature data, identified data gaps, deployed stream temperature monitoring devices, and developed and tested a stream temperature model that could be regionalized across the Northeast Climate Science Center domain. Polebitski and colleagues partnered with another NE CSC funded project team, NorEaST-Stream Temperature Web Portal Demonstration and Application, led by Jana Stewart (USGS Wisconsin Water Science Center), to collect data from over 10000 locations across 30 states and contributed by 40 different organizations