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This dataset shows the locations of forest dieback documented in the 2010 paper: Allen , C. D., Macalady, A. K., Chenchouni, H., Bachelet, D., McDowell, N, Vennetier, M , Kitzberger, T, Rigling, A, Breshears, D. D., Hogg, E.H., Gonzalez, P., Fensham, R., Zhang, Z. , Castro, J, Demidova, N., Lim, J. H., Allard, G., Running, S. W., Semerci, A., Cobb, N. 2010. A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests. Forest Ecology and Management 259(4): 660-684
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In this study, we investigated how the interaction of urbanization, latitudinal warming, and scale insect abundance affected urban tree health. We predicted that trees in warmer, lower latitude cities would be in poorer health at lower levels of urbanization than trees at cooler, higher latitudes due to the interaction of urbanization, latitudinal temperature, and herbivory. To evaluate our predictions, we surveyed the abundance of scale insect herbivores on a single, common tree species (Acer rubrum) in eight US cities spanning 10° of latitude. We estimated urbanization at two extents, a local one that accounted for the direct effects on an individual tree, and a larger one that captured the surrounding urban landscape.
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Current density of invasive species, insects, and disease within KM grid cell reporting units for the San Luis Valley - Taos Plateau Study Area. Attribute IID_C_CAT1 is valued along a scale of low current density (1) to high current density (4). This dataset is the result of a fuzzy model that integrates currently known and potential occurrences of invasive speices and forest insect pests and diseases. Data from a variety of sources were included, including LANDFIRE Existing Vegetation Types, LANDFIRE Succession Classes, SWReGAP Landcover Types, SLV weed management polygons, and U.S. Forest Service Forest Health survey areas.
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These data were compiled in support of the 'Predicting the next high-impact insect invasion: Elucidating traits and factors determining the risk of introduced herbivorous insects on North American native plants' project, supported by the U.S. Geological Survey John Wesley Powell Center for Analysis and Synthesis. The project working group compiled data for non-native insects herbivorous on three or fewer North American conifer families. Data were synthesized from existing resources for a variety of insect traits, traits of their North American conifer host trees, divergence time between the North American host trees and the host tree in the insects' native range, and native insects that feed on the same North American...


map background search result map search result map Global forest die-off Traits and Factors Catalog (TRAFAC): Conifer specialists of North America BLM REA SLV 2013 C IID 1km Poly Scale insect abundance, impervious surface proportions, and temperature data for Acer rubrum study trees BLM REA SLV 2013 C IID 1km Poly Scale insect abundance, impervious surface proportions, and temperature data for Acer rubrum study trees Traits and Factors Catalog (TRAFAC): Conifer specialists of North America Global forest die-off