Filters: Tags: FWSR4 (X)72 results (366ms)
Habitat Characterization and Distribution Surveys for Chucky Madtom (Noturus elegans) in Tributaries to Little Chucky Creek
The chucky madtom (Noturus crypticus) is a newly described species (Burr et al 2005) It is a candidate for federal listing and is known from only two streams in east Tennessee Dunn Creek in the French Broad River drainage and Little Chucky Creek in the Nolichucky River drainage. This QR project Final Report includes data collected under two separate contracts. The combined objectives were to: (1) conduct a survey for the chucky madtom in at least one reach of each tributary (contingent upon landowner permission), (2) survey Little Chucky Creek upstream of Rader, TN, (3) describe habitat at each tributary site sampled, and (4) transfer all chucky madtoms collected to CFI for propagation.
There are no reports available for this SSP project at this time.
Identification of previously undocumented Florida Grasshopper Sparrow (FGSP), Ammodramus savannarum floridanus, occurrences on public and private lands, and confirmation of the current population status and distribution
This SSP project provided reports on surveys conducted for Florida Grasshopper Sparrows at Kissimmee PrairiePreserve State Park in Florida during 2013 and 2014.
Advancing the tools of freshwater mussel conservation: determining the relative sensitivity of in vitro and in vivo propagated juveniles
Adaptation and establishment of microchemical methods to analyze elemental patterns in calcified structures of sturgeon for determining origins and movements of freshwater sturgeon in the Mississippi and Missouri river basins
Products for this SSP project included data and development of methods.
The objectives of this SSP project were to develop a Geographic Information System (GIS)-based habitat model for the state of Louisiana and to develop a tool for evaluating the potential effects of various land-use changes on Louisiana black bears. A habitat model previously developed to assess habitat impacts of Hurricanes Katrina and Rita on the coastal black bears in Louisiana (Murrow et al. 2012) was used as the starting point of the analysis for this study. That dataset was augmented with telemetry locations collected from 1993 to 2010 to extend and modify the original coastal model which was based on the Mahalanobis distance (D2) statistic. The goal was to then use that model to develop an estimator and user-friendly...
Survey of Dan and Roanoke River Drainages in North Carolina and Virginia for a Potentially New Species of Unionid Mussel
No products are available for this SSP project at this time.
This SSP project contributed to completion of three publications. One focused on survival of American woodcock using data from Michigan collected 1978-1998 and two focused on fall migration progression, rates, direction and destination.
Dissolved Oxygen Requirements for Freshwater Mussels Phase 1: Development of Test Systems and Experimental Protocols
This SSP project resulted in production of a thesis: Differences in oxygen consumption and critical oxygen levels of five stream fishes. Metabolic rate represents an integrated measure of a fish's physiology, particularly as it relates to stressors. A metric that is commonly used to determine the hypoxia tolerance of fishes is the determination of animal oxygen consumption rate (MO2), which is thought to reflect the ability of an organism to extract oxygen from the environment to maintain routine metabolic rate as dissolved oxygen (DO) decreases. We used respirometry to quantify the influence of two abiotic factors as potential stressors on stream fishes: temperature and dissolved oxygen. We determined standard...
This SSP project resulted in three publications focused on production and availabilty of seeds for waterfowl.
No products are available for this SSP project at this time.
Relations between stream biotic integrity and proportion of annual surface water runoff consumed for human use
Understanding effects of flow alteration on stream biota is essential to developing ecologically sustainable water supply strategies. We evaluated effects of altering flows via surface water withdrawals and instream reservoirs on stream fish assemblages, and compared effects with other hypothesized drivers of species richness and assemblage composition. We sampled fishes during three years in 28 streams used for municipal water supply in the Piedmont region of Georgia, U.S.A. Study sites had permitted average withdrawal rates that ranged from < 0.05 to > 13 times the stream's seven-day, ten-year recurrence low flow (7Q10), and were located directly downstream either from a water supply reservoir or from a withdrawal...
Occurrence and variation in submergent aquatic vegetation along the northern Gulf of Mexico (AL to TX): vulnerability assessment and climate change impacts
This QR project produced an annual report. Submersed aquatic vegetation (SAV) communities are highly productive ecosystems that provide significant ecological benefits within coastal areas, including support for many important species of fish and wildlife. Despite their critical importance, and loss globally, we lack consistent baseline data on SAV resources across the coastal salinity gradient. This project is part of a larger funded effort which has the overall objectives to document the occurrence and abundance of SAV resources (e.g., coverage, composition, seed resources) within the northern Gulf of Mexico over three years, to quantitatively assess environmental factors affecting SAV spatial and temporal variation,...
Hawksbill sea turtle genetics: Determining genetic relationships among Caribbean hawksbill nesting populations and origin of juveniles sampled at Buck Island
Hawksbill turtle populations have been severely depleted. We compared genetic diversity of females nesting at Buck Island Reef National Monument, St. Croix, US Virgin Islands with juveniles foraging in the region using standard control region sequences supplemented with nuclear microsatellite data. Four 760-base pair haplotypes were present among the expanded rookery samples: EiA01, EiA03, EiA11, and EiA20. In contrast, 61 foraging juveniles yielded 14 haplotypes, including three orphan haplotypes that have only been described from foraging aggregations and one novel haplotype. The haplotype frequencies for the foraging aggregation were distinct from those described from the Gulf of Mexico and Florida coast but...
Effects of sediment toxicity from coal mining on endangered mussel populations in the Upper Tennessee and Cumberland river drainages
A draft report and supporting information was produced by this SSP project. A scoping and reconnaissance study was conducted by the US Geological Survey in cooperation with the US Fish and Wildlife Service and National Park Service. Sediment, surface water and pore water samples were collected at 21 sites in the Clinch, Powell and South Fork Cumberland River basins in 2004-05. Three coal ponds (one yard sump and two drying cells) were also sampled in 2005. Surficial streambed sediment ranged from 0 to 47.7 percent coal and was composed predominantly of sand and gravel. Sediment quality guidelines were periodically exceeded at several sites for arsenic, chromium, lead and 22 of 31 polycyclic aromatic hydrocarbons...
Snail Kite and Apple Snail Habitat Suitability Modeling to Support Multi-Species Management for Threatened and Endangered Species in the Florida Everglades
This project directly addresses a recovery action in FWS’s recovery plan for the snail kite (Multi-species Recovery Plan for South Florida - Everglade Snail Kite, 1999), which recommends the development of modeling that can predict the response of snail kites to changes in hydropattern anticipated for specific water management proposals (recovery action H3.1). The proposed real-time models would be a significant first step in completing this recovery action, which specifies modeling that would include “...linkage to apple snail distribution and abundance, vegetation characteristics in the landscape influencing the snail kite’s successful foraging, and linkage of all these factors to hydrology.” In addition, this...
Integrating spatial data for predicting the influence of altered hydrologic and thermal conditions on fish and macroinvertebrate assemblage traits and taxa across stream
Stream hydrology and temperature are among the most influential regulators of life-history traits and community structure of aquatic organisms. Hydrologic and thermal gradients strongly affect individual fitness and ultimately species success by imposing fundamental constraints on behavior, metabolic rates, reproduction, growth and ecological interactions. Stream hydrology and water temperature are also among the most frequently altered components of lotic systems due to human activities and other environmental disturbance. Despite their critical role in sustaining native aquatic biodiversity, few studies have examined the cross-scale influence of hydrology and water temperature on freshwater biota using a multi-species...
No report for this QR project is available at this time. This project initially set out to expose snakeheads and flathead catfish (2 invasive fishes) to electric fields in a controlled laboratory study. This turned out to be not feasible for two reasons. Permits to hold the right species of snakeheads on campus could not be obtained, and flathead catfish of appropriate sizes that had not been previously exposed to electric fields (i.e., not captured by electrofishing) could not be attained. The objectives (and timeline) were revised to focus on food web relations for snakeheads and flathead catfish, specifically: (a) Determine trophic level and sources of prey for northern snakeheads collected from the Potomac...
Landscape modeling of Kentucky arrow darter (Etheostoma sagitta spilotum) occurrence and response to water quality parameters
This QR project resulted in a report and a publication. The Kentucky arrow darter (Etheostoma spilotum, KAD) is a species of conservation concern due to its fragmented distribution and threats from anthropogenic stressors. In this report, I evaluate the relationship between KAD abundance and stream conductivity in the upper Kentucky River basin. Stream conductivity represents an indicator of exposure to headwater mining operations and/or shale gas development and may have direct or indirect effects on stream fish distributions. I used nonlinear regression techniques to evaluate change points and associated confidence intervals for KAD abundance related to conductivity levels. I also evaluated blackside dace (Chrosomus...