Treesearch

The flowering dogwood (Cornus florida L.) is an important understory tree native to south and east pine and deciduous forest ecosystems of the United States and Canada (Jenkins and White 2002). This tree species has important cultural values associated with its use by Native Americans in natural remedies from bark and root extracts, dyes, and arrow shafts (Little et al. 1980; King 2003), and it is a popular ornamental landscape tree planted in the southern and eastern United States. Studies have reported localized decline of dogwood populations due to the introduction of the fungus Discula...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in South Carolina. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining...

Nuisance species are typically managed using mechanical removal, biological, cultural, or chemical treatments, applied either individually or in combination. Applications of synthetic pesticides may result in significant non-target effects that reduce biodiversity or result in pesticide drift, and target organisms can rapidly develop pesticide resistance. Biological control has less physical impact on ecosystems than mechanical removal, and none of the human health concerns of synthetic pesticides, but relies on coevolved antagonists that are introduced to the invaded environments and can...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in North Carolina. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in Georgia. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining all...

Eutrophication of the northern Gulf of America (NGOA) (also known as northern Gulf of Mexico) due to excess nutrients has resulted in harmful algal blooms, the development of hypoxic zones, and negative impacts on seafood production, recreational activities, and marine transportation. With a growing recognition of afforestation to maximize timber production and improve water quality, there is a critical need to investigate impacts of afforestation on nitrogen (N) loads to the NGOA. Using the Pearl River Basin (PRB) located in Mississippi and Louisiana along with the HAWQS (Hydrologic and...

The U.S. Department of Agriculture (USDA), Forest Service, Forest Inventory and Analysis (FIA) program provides this resource update yearly as an overview of forest resources in Kentucky. These estimates are derived from field data collected across a systematic network of fixed-radius forest monitoring plots located on both public and private land. New updates are provided annually as a subset of plots within the State are remeasured. Each year, field crews visit and measure a subset of all FIA plots across the entire State (the size of the subset varies by State and year). Combining all...

Alfalfa is a widely cultivated forage crop with high nutritional value, and it relies heavily on pollinators for successful reproduction owing to its keel petal structure. Numerous studies have shown the differences in pollinator diversity at different landscapes and/or regions, subsequently impacting plant reproduction. However, there is still insufficient evidence on variation in pollinator diversity at different sites with different landscapes and its effects on alfalfa reproduction. In this study, we investigated the diversity and abundance of floral visitors, and their impacts on...

Biodiversity can enhance forest resistance to drought, but the forms of diversity involved and conditions under which diversity confers resistance remain unclear. We used Forest Inventory and Analysis (FIA) plot data to examine whether four variables—structural richness (variation in tree heights, stand density, canopy cover and/or spatial heterogeneity), species richness (number of tree species), structural evenness and species evenness—are associated with the resistance of net primary productivity to drought and whether these relationships change with drought severity and by ecoregion....

The Timber Products Output (TPO) survey, administered by the Forest Inventory and Analysis (FIA) program of the USDA Forest Service, collects data annually from primary wood processing mills. The survey collects data on the volume of roundwood received and residues generated by the primary forest industry by major tree species and counties of harvest. Prior to 2019, the TPO survey was implemented as a full census of all active mills, with varying frequencies across FIA regions. For Southern FIA, TPO surveys of non-pulp mills were delivered every other year. From 2019 forward, TPO transition...