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Synopsis: This study evaluates whether previous observations of a higher percentage of parasitism and parasitoid diversity in a complex agricultural landscape, relative to a simple landscape, represent a general phenomenon. Rates of parasitism and parasitoid diversity of the armyworm (Pseudaletia unipuncta) were assessed in three replicate (Onondaga, Ingham, and Benton) regions in southern Michigan. Within each region, a simple landscape (primarily cropland) and a complex landscape (cropland intermixed with mid and late successional noncrop habitats) were identified through analysis of aerial photographs. In each landscape, three maize fields were selected, and second to fourth instar P. unipuncta were released...
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Synopsis: Prior to European settlement, the Northern Mixed-grass Prairie was a mosaic of wetland, grassland and grass-shrub habitats, with riparian and floodplain forests along major drainages. Even today, the physiographic area can be characterized as being one of the largest still relatively intact grassland landscapes that persist in North America. It is the continent’s most important production area for waterfowl and is the heart of the breeding range for some of North America’s rarest species of grassland birds. A comparison of relative abundance estimates among physiographic areas sampled by the North American Breeding Bird Survey indicates that more than 40% of the world’s population of Baird’s Sparrows,...
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The annual variability in mayflies (Ephemeroptera), fingernail clams (Sphaeriidae), and midges (Chironomidae) in six study areas of the Upper Mississippi River System from 1992 to 1995 was examined. Spatial distribution is also discussed for these organisms along with the Asiatic clam (Corbicula fluminea) and the zebra mussel (Dreissena polymorpha). Sample allocation within each reach was based on a stratified random design where strata were aquatic areas. No significant linear trends across years were found in estimated reachwide mean number of organisms. However, the overall test for differences in intercepts among study areas was statistically significant (P < 0.05) for mayflies, fingernail clams, and midges....
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Satellite images offer an alternative to aerial photography in mapping applications where large area coverage at brief time intervals is required. Their digital format allows either visual or automated interpretation, with immediate incorporation into a geographic information system. Their primary disadvantage is a coarser spatial resolution. This study combined the benefits of (1) the 10-m spatial resolution of SPOT panchromatic (PAN) images, (2) the added spectral information of Landsat Thematic Mapper's (TM) mid-infrared bands, and (3) digital classifications to map terrestrial and aquatic cover types in the Mississippi and Illinois River floodplains. The PAN and the six non-thermal TM bands were combined using...
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Raw data were collected in Shenandoah National Park during summer 2012. Air and temperature data were collected using temperature loggers at several stations throughout the park. These data were used in the publication of the manuscript "Accounting for groundwater influence on headwater stream thermal sensitivity to climate change" through the journal Ecological Applications. Water temperature data were collected at all 78 reach locations during the summer of 2012 (23 June–7 September). Temperature was measured every hour with a logger.
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This part of DS 781 presents data for the faults for the geologic and geomorphic map of the Offshore of Scott Creek map area, California. The vector data file is included in "Faults_OffshoreScottCreek.zip," which is accessible from http://dx.doi.org/10.5066/F7CJ8BJW.The offshore of Scott Creek map area straddles the right-lateral San Gregorio Fault Zone, an important structure in the distributed transform boundary between the North American and Pacific plates (see, for example, Dickinson and others, 2005). Regionally, this fault is part of a system that occurs predominantly in the offshore for about 400 km from Point Conception in the south (where it is known as the Hosgri fault; Johnson and Watt, 2012) to Bolinas...
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The data set includes delineation of sampling strata for the six study reaches of the UMRR Program’s LTRM element. Separate strata coverages exist for each of the three monitoring components (fish, vegetation, and water quality) to meet the differing sampling needs among components. Generally, the sampling strata consist of main channel, side channel, backwater, and impounded areas. The fish component further delineates a “shoreline” portion of the strata to be used for sampling gears deployed only along the shoreline. The data are raster in origin, with the center of each pixel representing the sampling location. Cell size is typically 50 meters, although several water quality strata are at 200 meter cell size.
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The frequency and severity of flooding in the Upper Mississippi River Basin is influenced by three major factors: the amount and timing of precipitation, the condition of the basin's stream channels and floodplains, and the timing and rate of storm water conveyance off the watershed, which is a function of soil condition, extent of impervious surface, vegetation density, and other factors. To the extent that changing precipitation patterns result from human-caused changes in the global climate, this factor can be addressed through international efforts to reduce emissions of greenhouse gases. Careful planning and design can provide some control over the condition of channels, floodplains, and watersheds. The primary...
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The geographic information system pilot project on Pool 13 of the Upper Mississippi River System was initiated to evaluate system-wide application of various methods of capturing, processing and converting resource data. Classification schemes were developed for two data themes: land cover/land use (vegetation) and aquatic areas. Evaluation of 1:15,000 scale aerial photography indicated that (1) color infrared transparencies were essential for accurately mapping major vegetation classes and vegetation units less than 1 acre; (2) color infrared prints were essential for field work (delineating work areas on the photos and identifying in the field; (3) true color (Ektachrome) transparencies and prints were not useful...
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Movement of recreational boats in a waterway such as the Upper Mississippi River System (UMRS) may generate waves of sufficient degree to impact the river biota and the stability of the shorelines. A research project aiming to determine the characteristics of waves generated by recreational craft within the UMPS has been completed, and this is the first of a two-part paper that presents results. Part II presents the results of uncontrolled movement. To meet the objectives of the project, 246 controlled runs were made with 12 different boats at two sites, one on the Illinois River and the other on the Mississippi River. Data from this study indicated that recreational boats can generate from 4 to 40 waves per event,...
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The conventional approach to maintaining biological diversity generally has been to proceed species by species and threat by threat. We suggest that piecemeal approaches are not adequate by themselves to address the accelerating extinction crisis and, furthermore, they contribute to an unpredictable ecological and economic environment. Here, we describe a methodology called Gap Analysis, which identifies the gaps in representation of biological diversity (biodiversity) in areas managed exclusively or primarily for the long-term maintenance of populations of native species and natural ecosystems (hereinafter referred to as biodiversity management areas). Once identified, gaps are filled through new reserve acquisitions...
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The Finger Lakes Habitat Rehabilitation and Enhancement Project(HREP) is intended to improve winter habitat conditions for fish in a series of interconnected backwater lakes of the Mississippi River near Alma, Wisconsin. Winter habitat requirements (temperature, flow velocity, and dissolved oxygen) for the target fish population in the Finger Lakes have been defined and limnologcal efforts have been aimed at quantifying the spatial-temporal patterns and interrelationships among water movement, oxygen, and temperature. The progress to date (pre-construction) has included detailed investigations into (1) system hydrology (including dye-tracer studies), (2) oxygen supply and depletion, (3) temperature regime, (4) aquatic...
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The bathymetric and bed material characteristics of Pool 19 on the Mississippi River have been analyzed and presented in this report. These data are illustrated and described at 13 main channel, 2 side channel, 1 tributary mouth, 1 island cross channel, and several spot locations in side channels. The river was traced from river mile 410.0 in the tailwater below Lock and Dam 18 to river mile 364.5 just upstream of Lock and Dam 19 and the power plant at Keokuk, Iowa. More detail was given for several areas where habitat succession is taking place as sedimentation raises the bed near enough to the water surface so that rooted macrophytes can become established and survive floods and winter ice cover. Both the plan...
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The longitudinal and transverse components of flow velocity, as well as the normal and tangential stresses, must be expected to fluctuate with time and space when flow at a high Reynolds number moves between fixed boundaries. Although these nonperiodic fluctuations are generally secondary in magnitude compared to the mean motion, they have profound effects on properties of the primary mean motion. Scientists from the Illinois State Water Survey are involved in collecting and analyzing detailed velocity data from the Illinois and Mississippi Rivers using 2-D electromagnetic current meters. The goal of the present research is to understand and evaluate the turbulent structure in natural river systems, especially near...
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The Mississippi River System, including the Ohio, Illinois, and Missouri Rivers, has been modified for use by commercial traffic. Tows with barges, including those transporting to the Great Lakes System, are used to transport commodities up and down the river. Barges moving on the Mississippi River System normally have a draft of 9 feet, a width of 35 feet, and a length of 195 feet. Usually barge configuration on the Upper Mississippi River System (UMRS) consists of a system of 5 barges tied together and moving 3 abreast. This results in a planform surface area of 975 square feet. Average speed of the barges varies from about 3.5 mph to about 11 mph. Research was conducted on the UMRS to determine the physical impacts...
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The U.S. Army Corps of Engineers, Louisville District, conducted a pilot application of Navigation Predictive Analysis Technique (NAVPAT), a model for assessing incremental environmental effects of commercial navigation traffic on main channel Upper Mississippi River Pool 13. Upper Mississippi River Pool 13 was divided into units of similar habitat. Seasonal changes in stage and discharge were included. River reaches were described, including analysis of banks, mapping of depths and substrate, and measurement of water velocity. The needed economic data were developed from 1989 actual usage of Lock 13 (44 million tons). Two traffic scenarios, 44 and 88 million tons, were developed for the Pool 13 application. Each...
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Moisture content, bulk density, and organic content of surficial sediments were estimated with a penetrometer in Navigation Pools 4 and 8 of the Upper Mississippi River during 1994 and 1995. Mean moisture content of sediment was low in both Pool 4 (39%, SD = 15.0%) and Pool 8 (34%, SD = 13.7%), suggesting that soft, fine sediments are uncommon in these pools. Sediment in much of the off-channel habitat was found to have similarly low moisture content. Sediment in small backwaters was particularly low in moisture content, although areas with sediment moisture content greater than 70% were found in small backwaters. Sediment in the large backwaters of Pool 4 was similar to sediment in the small backwaters of Pools...
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In 1992, macroinvertebrate sampling was initiated in Pools 4, 8, 13, 26, the Open River reach of the Mississippi River, and La Grange Pool of the Illinois River as part of the Long Term Resource Monitoring Program. Longterm monitoring is needed to detect population trends and local changes in aquatic ecosystems. Mayflies (Ephemeroptera), fingernail clams (Sphaeriidae), and the exotic Corbicula species were selected for monitoring. Midges (Chironomidae) were added to the sampling design in 1993 and zebra mussels (Dreissena polymorpha) were added in 1995. Mayflies, fingernail clams, and midges, members of the soft-substrate community, were chosen because they play an important ecological role in the Upper Mississippi...
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Net sedimentation rates were obtained for backwaters of the Upper Mississippi River in Pools 4, 8, and 13 by measuring annual bed elevation changes along transects between 1997 and 2001. Average sedimentation rates (cmּyr�1) during the 5-yr period were lower than most previously reported rates in backwaters of the River, with means of –0.08 (standard error [SE] = 0.18) in Pool 4, 0.21 (SE = 0.10) in Pool 8, and 0.47 (SE = 0.26) in Pool 13.�Poolwide estimated mean sedimentation rates in the terrestrial areas adjacent to backwaters appeared higher, ranging from 0.32 (SE = 0.14) to 0.78 (SE = 0.25) cmּyr�1, but were not significantly different than rates in aquatic areas.�When averaged over the study period, sedimentation...


map background search result map search result map Does agricultural landscape structure affect parasistism and parasitoid diversity? Partners in Flight Bird Conservation Plan for Northern Mixed-Grass Prairie Geographic information system pilot project for the Upper Mississippi River System Waves generated by recreational traffic:  Part I, Controlled movement Gap analysis:  A geographic approach to protection of biological diversity Hydrologic modification for habitat improvement in the Finger Lakes:  Pre-Project Report Number 2, 1993 Bed material characteristics of the Mississippi River within Pool 19 Turbulent velocity fluctuations in natural rivers Resuspension and lateral movement of sediment due to commercial navigation in the Mississippi River System Navigation Predictive Analysis Technique (NAVPAT) Pilot Application for Pool 13, Upper Mississippi River Geospatial application:  Assessment of merged Landsat TM and SPOT panchromatic data for Pool 26, Upper Mississippi River System Surficial sediment characteristics in Pools 4 and 8, Upper Mississippi River Annual status report, 1995: Macroinvertebrate sampling A natural storage approach for flood damage reduction and environmental enhancement Temporal analyses of select macroinvertebrates in the Upper Mississippi River System, 1992-1995 Unusual coloration in a red-eared slider, Trachemys scripta elegans Rates and patterns of net sedimentation in backwaters of Pools 4, 8, and 13 of the Upper Mississippi River Faults--Offshore Scott Creek, California 2012 Air and Temperature Data from Shenandoah National Park LTRM Water Quality Sampling Strata Hydrologic modification for habitat improvement in the Finger Lakes:  Pre-Project Report Number 2, 1993 Faults--Offshore Scott Creek, California Geospatial application:  Assessment of merged Landsat TM and SPOT panchromatic data for Pool 26, Upper Mississippi River System Navigation Predictive Analysis Technique (NAVPAT) Pilot Application for Pool 13, Upper Mississippi River Bed material characteristics of the Mississippi River within Pool 19 2012 Air and Temperature Data from Shenandoah National Park Surficial sediment characteristics in Pools 4 and 8, Upper Mississippi River Does agricultural landscape structure affect parasistism and parasitoid diversity? Rates and patterns of net sedimentation in backwaters of Pools 4, 8, and 13 of the Upper Mississippi River Turbulent velocity fluctuations in natural rivers LTRM Water Quality Sampling Strata Partners in Flight Bird Conservation Plan for Northern Mixed-Grass Prairie Geographic information system pilot project for the Upper Mississippi River System Waves generated by recreational traffic:  Part I, Controlled movement Gap analysis:  A geographic approach to protection of biological diversity Resuspension and lateral movement of sediment due to commercial navigation in the Mississippi River System Annual status report, 1995: Macroinvertebrate sampling A natural storage approach for flood damage reduction and environmental enhancement Temporal analyses of select macroinvertebrates in the Upper Mississippi River System, 1992-1995 Unusual coloration in a red-eared slider, Trachemys scripta elegans