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Filter Total Items: 3521

User interface for ATLSS models User interface for ATLSS models

No abstract available.
Authors
Water Resources Division U.S. Geological Survey

Cattle grazing and its long-term effects on sedge meadows Cattle grazing and its long-term effects on sedge meadows

Most people think that wetlands are temporary, that they fill in by natural processes, and eventually become dry land. Some of these outdated ideas have come from the way that this subject has been covered in introductory textbooks in schools (Gibson, 1996). From these texts, we learned incorrectly that over time a lake fills with sediment or organic matter to become a wetland, which...
Authors
Beth Middleton

Effects of natal departure and water level on survival of juvenile snail kites (Rostrhamus sociabilis) in Florida Effects of natal departure and water level on survival of juvenile snail kites (Rostrhamus sociabilis) in Florida

Survival rate from fledging to breeding, or juvenile survival, is an important source of variation in lifetime reproductive success in birds. Therefore, determining the relationship between juvenile survival and environmental factors is essential to understanding fitness consequences of reproduction in many populations. With increases in density of individuals and depletion of food...
Authors
V.J. Dreitz, W.M. Kitchens, D.L. DeAngelis

The effectiveness of a barrier wall and underpasses in reducing wildlife mortality on a heavily traveled highway in Florida The effectiveness of a barrier wall and underpasses in reducing wildlife mortality on a heavily traveled highway in Florida

Because of high numbers of animals killed on Paynes Prairie State Preserve, Alachua County, Florida, the Florida Department of Transportation constructed a barrier wall-culvert system to reduce wildlife mortality yet allow for passage of some animals across the highway. During a one year study following construction, we counted only 158 animals, excluding hylid treefrogs, killed in the...
Authors
C.K. Dodd, W.J. Barichivich, L. L. Smith

Effects of invasive alien plants on fire regimes Effects of invasive alien plants on fire regimes

Plant invasions are widely recognized as significant threats to biodiversity conservation worldwide. One way invasions can affect native ecosystems is by changing fuel properties, which can in turn affect fire behavior and, ultimately, alter fire regime characteristics such as frequency, intensity, extent, type, and seasonality of fire. If the regime changes subsequently promote the...
Authors
M.L. Brooks, C. M. D’Antonio, D.M. Richardson, J.M. DiTomaso, J.B. Grace, R.J. Hobbs, Jon E. Keeley, M. Pellant, D. Pyke

Comparison of litter decomposition in a natural versus coal-slurry pond reclaimed as a wetland Comparison of litter decomposition in a natural versus coal-slurry pond reclaimed as a wetland

Decomposition is a key function in reclaimed wetlands, and changes in its rate have ramifications for organic-matter accumulation, nutrient cycling, and production. The purpose of this study was to compare leaf litter decomposition rates in coal-slurry ponds vs. natural wetlands on natural floodplain wetlands in Illinois, USA. The rate of decomposition was slower in the natural wetland...
Authors
J. Taylor, B.A. Middleton

Use of a latitudinal gradient in bald cypress (Taxodium distichum) production to examine physiological controls of biotic boundaries and potential responses to environment change Use of a latitudinal gradient in bald cypress (Taxodium distichum) production to examine physiological controls of biotic boundaries and potential responses to environment change

Aim: Predictions of vegetation change with global warming require models that accurately reflect physiological processes underlying growth limitations and species distributions. However, information about environmental controls on physiology and consequent effects on species boundaries and ecosystem functions such as production is limited, especially for forested wetlands that are...
Authors
B.A. Middleton, K.L. McKee

Snakeheads (Pisces, Channidae): A biological synopsis and risk assessment Snakeheads (Pisces, Channidae): A biological synopsis and risk assessment

Snakeheads (family Channidae) are airbreathing freshwater fishes containing two genera, Channa with 26 species native to Asia, Malaysia, and Indonesia; and Parachanna with 3 species native to tropical Africa. Some snakeheads are small, reaching about 17 centimeters, but most are much larger, the largest reported to be 1.8 meters in length. All are considered thrust predators with most...
Authors
Walter R. Courtenay, James D. Williams

Nutrient controls on biocomplexity of mangrove ecosystems Nutrient controls on biocomplexity of mangrove ecosystems

Mangrove forests are important coastal ecosystems that provide a variety of ecological and societal services. These intertidal, tree-dominated communities along tropical coastlines are often described as “simple systems,” compared to other tropical forests with larger numbers of plant species and multiple understory strata; however, mangrove ecosystems have complex trophic structures...
Authors
Karen L. McKee

Global change impacts on mangrove ecosystems Global change impacts on mangrove ecosystems

Mangroves are tropical/subtropical communities of primarily tree species that grow in the intertidal zone. These tidal forests are important coastal ecosystems that are valued for a variety of ecological and societal goods and services. Major local threats to mangrove ecosystems worldwide include clearcutting and trimming of forests for urban, agricultural, or industrial expansion...
Authors
Karen L. McKee

Belowground dynamics in mangrove ecosystems Belowground dynamics in mangrove ecosystems

Mangrove ecosystems are tropical/subtropical communities of primarily tree species that grow in the intertidal zone. These tidal communities are important coastal ecosystems that are valued for a variety of ecological and societal goods and services (fig. 1). Mangrove wetlands are important filters of materials moving between the land and sea, trapping sediment, nutrients, and pollutants...
Authors
Karen L. McKee
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