Filters: Contacts: Jacob Fraser (X)
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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...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2018,
Birds,
Birds,
CASC,
Completed,
Under shifting temperatures and precipitation patterns, Midwestern states are increasingly at risk from non-native invasive plants that are changing the composition, structure, and function of native forests. Non-native invasive plants impact the resilience and sustainability of forest communities by outcompeting native tree seedlings and diverse flowering plants, and by altering ecologically important patterns of natural processes like fire, wind, drought, and flooding. Land managers facing this threat are having to not only consider current non-native invasive plants within their landscapes but also future impacts with the expansion of these plants northward and westward under a changing climate, especially as...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2020,
CASC,
Data Visualization & Tools,
Data Visualization & Tools,
Forests,
Abstract (from British Ecological Society): Tree harvest and climate change can interact to have synergistic effects on tree species distribution changes. However, few studies have investigated the interactive effects of tree harvest and climate change on tree species distributions. We assessed the interactive effects of tree harvest and climate change on the distribution of 29 dominant tree species at 270 m resolution in the southern United States, while accounting for species demography, competition, urban growth and natural fire. We simulated tree species distribution changes to year 2100 using a coupled forest dynamic model (LANDIS PRO), ecosystem process model (LINKAGES) and urban growth model (SLEUTH). The...
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 aimed to explore the relative contribution of shifts in...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2015,
CASC,
Completed,
Forests,
Forests,
Modeling Post-Fire Tree Mortality Using a Logistic Regression Method within a Forest Landscape Model
Abstract (from Forests): Fire is a multi-scale process that is an important component in determining ecosystem age structures and successional trajectories across forested landscapes. In order to address questions regarding fire effects over large spatial scales and long temporal scales researchers often employ forest landscape models which can model fire as a spatially explicit disturbance. Within forest landscape models site-level fire effects are often simplified to the species, functional type, or cohort level due to time or computational resource limitations. In this study we used a subset of publicly available U.S. Forest Service forest inventory data (FIA) to estimate short-term fire effects on tree densities...
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...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Climate adaptive management,
Climate change,
Forest landscape modeling,
LANDIS
Abstract (from https://link.springer.com/article/10.1007/s10980-016-0404-8): Objectives We compared predictions for 30 species from TreeAtlas, Linkages, and LANDIS PRO, using two climate change scenarios on four regions, to derive a more robust assessment of species change in response to climate change. Methods We calculated the ratio of future importance or biomass to current for each species, then compared agreement among models by species, region, and climate scenario using change classes, an ordinal agreement score, spearman rank correlations, and model averaged change ratios. Results Comparisons indicated high agreement for many species, especially northern species modeled to lose habitat. TreeAtlas and...
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