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41 results for “Mississippi River”
Mid-winter habitat suitability indices for centrarchids in contiguous lentic areas of the Upper Mississippi River System: 1994-2018
This dataset includes raw measurements and calculated bluegill winter habitat suitability indices for depth (HSID), dissolved oxygen (HSIDO), temperature (HSIT), and flow (HSIF), as well as an overall bluegill winter habitat suitability index (HSIO), for 2915 mid-winter, lentic sampling locations across 208 contiguous lentic areas throughout the Upper Mississippi River System (Upper Mississippi and Illinois Rivers) from 1994-2018. This dataset also includes several spatial and temporal climatic and hydrogeomorphic parameters that were used to assess potential drivers of winter habitat suitability.
Mississippi River spatial water chemistry Environmental Research Letters datasets
We mapped surface water chemistry along the entire length of the Upper Mississippi River (UMR) to understand spatial patterns in nitrate sources and processing. We used a sensor-based and boat-mounted sensing platform to continuously measure underway water chemistry. Measurements were linked with global positioning systems (GPS) to create maps of surface water chemistry. Here, we archive data associated with an Environmental Research Letters publication (Loken et al. 2018). Data include a single spatial survey of the entire length of the UMR (Minneapolis, Minnesota to Cairo, Illinois) in August 2015 and repeat surveys in Navigation Pool 8 (located near La Crosse, WI). Data have been provided in three formats (raw, hydraulic-corrected, and tau-corrected). Additionally, we archive laboratory chemistry data from water samples collected during the project. Sites include a range of main channel, backwaters, and tributaries. Water chemistry samples were analyzed at the North Temperate Lakes - Long Term Ecological Research facility and linked with underway sensor measurements.
Minnesota Department of Natural Resources Yellow Perch and Bluegill Diet Study, Lower Pool 4 Mississippi River, 2018-2019
To assess potential dietary overlap and predation between bluegill and yellow perch, we examined stomach content of both species in three backwater contiguous lakes of Lower Pool 4 in the Mississippi River from May 2018 through January 2019. In this area, bluegill have been common for decades, but yellow perch only became abundant following an ecological shift to a clear-water, macrophyte dominated state that occurred from 2007 - 2007. We used daytime electrofishing to collect fish during open-water sampling (spring, summer, and fall) and ice angling during ice-covered sampling (winter). The dataset documents the diet content of one hundred and eighty-nine yellow perch and sixty-one bluegill. Stomach contents were extracted via gastric lavage in the spring, summer, and fall and via stomach removal in the winter. All prey items were categorized to lowest identifiable taxonomic level and quantified via volumetric displacement.
Time-lapse electrical resistivity tomography and seismic reflection imaging of a shallow ground-water aquifer (0-50 m): Mississippi River levee seepage across the Duncan Point bar, Baton Rouge, Louisiana, U.S.A.
<p>The electrical resisitivity raw data files are slightly processed to remove bad data points but can be inverted using tomographic inversion code. </p> <p>The seismic data were assembled in Seismic Unix format, a shortened version of the SEG-Y format (Society of Exploration Geophysicists Exchange Format-Y https: //seg. org/Publications/SEG-Technical-Standards), that has the 3200-byte EBCDIC and 400-byte tape header removed. The data uploaded online (<a href="https://zenodo.org/records/14776025">https://zenodo.org/records/14776025</a>) is a CMP brute-stacked seismic section. </p> <p>During data collection, shotpoint location changed proceeding along a 136-degree azimuth (south-easterly direction), and spaced every 1 m.</p> <p>A total of 48, horizontal-component 28-Hz nominal geophones were placed every one meter and shotpoints were located half-way between geophones. Geophones remained fixed at their locations throughout the survey and so the CMP spacing is nominally 0.5-m but fold varies linearly from a value of 1 from either side of the survey to a central maximum of 24. The seismic source consisted of a partially buried 20-lb steel I-beam struck repeatedly on either side three times by an 8-lb sledge hammer. Data of the same striking polarity were added in-phase in the field. Data with opposing polarity at each shotpoint location were subtracted later to enhance SH-wave data and suppress converted SH-to-P waves.</p> <p>Seismic processing is minimal and consists of standard surface-wave muting, elimination of bad seismic traces, normal moveout, bandpass filtering (between 12 Hz and 50 Hz) and preliminary stacking with trace mixing every 3 CMPs. The data were stacked with a single velocity throughout that ranged from 80 m/s (Vs) at 0.2 s, to 100 m/s at 0.35 s and reached 180 m/s at 0.5 s of two-way traveltime.</p> <p> </p>
Peak Flow Event Durations in the Mississippi River Basin and Implications for Temporal Sampling of Rivers
<p><strong>Corresponding peer-reviewed publication</strong></p> <p>This repository corresponds to all the input and output files that were used in the study reported in:</p> <ul> <li>Cerbelaud, A., David, C. H., Biancamaria, S., Wade, J., Tom, M., Prata de Moraes Frasson, R., & Blumstein, D. (2024). Peak flow event durations in the Mississippi River basin and implications for temporal sampling of rivers. Geophysical Research Letters, 51, e2024GL109220. <a href="https://doi.org/10.1029/2024GL109220" target="_blank" rel="noopener">https://doi.org/10.1029/2024GL109220</a>.</li> </ul> <p>When making use of any of the output files of this dataset, please cite both the aforementioned article and the dataset herein. </p> <p><strong>Main goals of the publication</strong></p> <p>The corresponding work aims to quantify peak flow event durations at an hourly time scale and their impact on high-frequency river sampling requirements using sampling ratios. The analysis is performed over the Mississippi basin using hourly USGS gages over 2010-2022.</p> <p>The findings derived from these output files have direct implications for future satellite missions concerned with capturing high-frequency dynamics in rivers, including flood events.</p>
Variability in the discharge of the Mississippi River and tributaries from 1817 to 2020
<p>This is a two-hundred-year long dataset of the annual average, minimum, and maximum discharges at five stations draining the Mississippi River watershed: at Clinton, IA, Herman, MO, St. Louis, MO, Louisville, KY, and Vicksburg, MS. The data are useful to test for increases in the three discharge metrics, and correlations with air pressure differentials represented in the North Atlantic Oscillation (NAO) Index. These data may be useful for climate change assessments through modeling or synthetic assessments using other data sets.</p>
Total water storage anomalies (TWSA) and streamflow in the Mississippi River Basin for 01/2003 to 12/2016
<p>This dataset includes observations and simulations of total water storage anomalies (TWSA) as well as streamflow that were used in the paper Schulze et al. (2024). The data covers the time period from 01/2003 to 12/2016. The TWSA [in millimeters] are basin averages, while the streamflow data [in cubic meters per second] refer to 68 gauge stations distributed over the Mississippi River Basin. </p> <p>The TWSA observations are derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission. The streamflow observations are provided by the Global Runoff Database (GRDC).</p> <p>The simulations are uncalibrated model runs of the WaterGAP Global Hydrology Model (WGHM; based on WaterGAP version 2.2d) as well as an Open Loop Simulation and simulations by assimilating GRACE-derived TWSA and/or streamflow observations. The TWSA observations are assimilated on a 4°x4° grid. The streamflow observations are assimilated at (1) all gauge stations with mean observed streamflow above 500 cubic meters per second, (2) all gauge stations with mean observed streamflow between 10 and 100 cubic meters per second, and (3) at randomly selected gauge stations.</p> <p>All files are packaged into a single ZIP archive for easy access and distribution.</p> <p>More details about the dataset and the assimilation are provided in:<br>Schulze, K., Kusche, J., Gerdener, H., Döll, P., Müller Schmied, H. (2024): Benefits and Pitfalls of GRACE and Streamflow Assimilation for Improving the Streamflow Simulations of the WaterGAP Global Hydrology Model. Submitted to Journal of Advances in Modeling Earth Systems (JAMES).</p>
Atchafalaya shelf velocity data from May 2011 during a Mississippi River flood period
<p>Current velocity measured over the Atchafalaya shelf by an ADCP mounted on from R/V Pelican during the Mississippi River flood period in May 2011.</p>
Variability in the discharge of the Mississippi River and tributaries from 1817 to 2020
Open the record for dataset details and reuse information.
Anthropogenic nitrogen Balance and Riverine Nitrogen Footprint of Agriculture in the Mississippi-Atchafalaya River Basin during 1970-2019
These data support the findings of a manuscript by Lu et al. under review in Environmental Research Letters. We used data synthesis and a well-calibrated hydro-ecological model to quantify the dynamics and controls of the riverine N footprint (RNF) within the Mississippi-Atchafalaya River Basin (MARB) from 1970 to 2019. These supportive data include (1) Annual synthetic N fertilizer and manure N input from 1970 to 2019 in sub-basins in the MARB; (2) Annual N inputs, outputs, and N balance from 1970 to 2017 in the MARB; (3) Changes in crop production, N load and riverine N footprint in response to key agricultural activities in MARB; (4) Changes in crop production, N load, and riverine N footprint under key agricultural activities at sub-basin level; (5) Annual acreage of major grain crops and total cropland areas in sub-basins of the MARB.
RAPID input files corresponding to the Mississippi River Basin using the NHDPlus v2 Dataset
<p><strong>Corresponding peer-reviewed publication</strong></p> <p>This dataset corresponds to RAPID input files that were used in study published by Journal of American Water Resources Association (JAWRA):</p> <p>Tavakoly, A. A., A. D. Snow, C. H. David, M. L. Follum, D. R. Maidment, and Z.-L. Yang, (2016) "Continental-Scale River Flow Modeling of the Mississippi River Basin Using High-Resolution NHDPlus Dataset", Journal of the American Water Resources Association (JAWRA) 1-22. DOI: 10.1111/1752-1688.12456</p> <p><em>Please cite the aforementioned article and the dataset herein, when using of any of these files in this dataset.</em></p>
Sea turtle relative abundance in nearshore waters adjacent to the Mississippi River delta, Gulf of Mexico, United States
<p><span>We measured the relative abundance of sea turtles using standardized transect surveys conducted during the summer and fall of 2013 in neritic waters surrounding the Mississippi River delta in Louisiana, USA. Data comprise sea turtle locations, observation circumstances, and environmental covariates recorded at the beginning of each transect and at the time of each turtle observation. Turtles were recorded by species and size class, as well as location in the water column and the distance the turtle was from the transect line. Transects were performed on an 8.2-meter vessel with two observers atop a 4.5-meter elevated platform, with vessel speed standardized at ~15 km/hr. These data are the first to describe relative abundance of sea turtles observed from small vessels in this region. Detection of turtles <45 cm SSCL and data detail are greater than aerial surveys. The data serve to inform resource managers and researchers regarding these protected marine species. </span></p>
Suspended particle and floc sizes in the lower most reaches of the Mississippi River during summer 2020 and winter 2021
<p>Data associated with the paper: Osborn, R., Dunne, K. B. J., Ashley, T., Nittrouer, J. A., & Strom, K. (2023). The flocculation state of mud in the lowermost freshwater reaches of the Mississippi River: Spatial distribution of sizes, seasonal changes, and their impact on vertical concentration profiles. <em>Journal of Geophysical Research: Earth Surface</em>, 128, e2022JF006975. <a href="https://doi. org/10.1029/2022JF006975">https://doi. org/10.1029/2022JF006975</a></p>
Subsurface redox interactions regulate ebullitive methane flux in heterogeneous Mississippi River deltaic wetland
<p>This dataset is model outputs archive from a model study about 'Subsurface redox interactions regulate ebullitive methane flux in heterogeneous Mississippi River deltaic wetland' (manuscript is Under Review). Plotting scripts are also included in this data file. There are four model results. 'Ebull' model output are ebullition flux, 'Jswi' model output are diffusion flux across soil-water interface, and 'Methane' files are porewater concentration results in each soil layers, and 'LtranR' model outputs for redox species exchange rates across different soil layers. The model source codes can be found at <a href="https://zenodo.org/record/8084441">https://zenodo.org/record/8084441</a> and <a href="https://zenodo.org/record/8087566">https://zenodo.org/record/8087566</a>.</p>
Sea turtle relative abundance in nearshore waters adjacent to the Mississippi River delta, Gulf of Mexico, United States
Open the record for dataset details and reuse information.
Westward range expansion from middle latitudes explains the Mississippi River discontinuity in a forest herb of eastern North America
<p>It is often expected that temperate plants have expanded their geographic ranges northward from primarily southern refugia. Evidence for this hypothesis is mixed in eastern North American species, and there is increasing support for colonization from middle latitudes. We studied genome-wide patterns of variation in RADseq loci to test hypotheses concerning range expansion in a North American forest herb (<i>Campanula americana</i>). First, spatial patterns of genetic differentiation were determined. Then phylogenetic relationships and divergence times were estimated. Spatial signatures of genetic drift were also studied to identify the directionality of recent range expansion and its geographic origins. Finally, spatially explicit scenarios for the spread of plants across the landscape were compared, using variation in the population mutation parameter and Tajima's D. We found strong longitudinal subdivision, with populations clustering into groups west and east of the Mississippi River. While the southeastern region was likely part of a diverse Pleistocene refugium, there is little evidence that range expansion involved founders from these southern locales. Instead, declines in genetic diversity and the loss of rare alleles support a westward colonization wave from a middle latitude refugium near the southern Appalachian Mountains, with subsequent expansion from a Pleistocene staging ground in the Mississippi River Valley (0.51 - 1.27 Mya). These analyses implicate stepping stone colonization from middle latitudes as an important mechanism of species range expansion in eastern North America. This study further demonstrates the utility of population genetics as a tool to infer the routes traveled by organisms during geographic range expansion.</p>
Subspecies and Distribution. S. p. putorius Linnaeus, 1758 — E & SE USA (Mississippi, Alabama & N Florida, through Georgia, N to SC Pennsylvania). S. p. ambarvalis Bangs, 1898 — SE USA (Peninsular Florida). S. p. interrupta Rafinesque, 1820 — USA (Canadian border in Minnesota, C North Dakota, E Wyoming, E Colorado, W Oklahoma, NW Texas, south to C Texas, and east to the Mississippi River along Louisiana, Arkansas, Missouri & Iowa, up to Wisconsin. in Mephitidae
Subspecies and Distribution. S. p. putorius Linnaeus, 1758 — E & SE USA (Mississippi, Alabama & N Florida, through Georgia, N to SC Pennsylvania). S. p. ambarvalis Bangs, 1898 — SE USA (Peninsular Florida). S. p. interrupta Rafinesque, 1820 — USA (Canadian border in Minnesota, C North Dakota, E Wyoming, E Colorado, W Oklahoma, NW Texas, south to C Texas, and east to the Mississippi River along Louisiana, Arkansas, Missouri & Iowa, up to Wisconsin.
Subspecies and Distribution. T. t. taxus Schreber, 1778 — S Canada (Alberta, British Columbia, Manitoba, Ontario & Saskatschewan) and NC USA. T. t. berlandieri Baird, 1858 — N & C Mexico and SC USA (W of the Mississippi River). T. t. jacksoni Schantz, 1946 — NE USA (Great Lakes Region). T. t. jeffersonii Harlan, 1825 — W USA (NW to California). in Mustelidae
Subspecies and Distribution. T. t. taxus Schreber, 1778 — S Canada (Alberta, British Columbia, Manitoba, Ontario & Saskatschewan) and NC USA. T. t. berlandieri Baird, 1858 — N & C Mexico and SC USA (W of the Mississippi River). T. t. jacksoni Schantz, 1946 — NE USA (Great Lakes Region). T. t. jeffersonii Harlan, 1825 — W USA (NW to California).
Mississippi River Baton Rouge water quality
<p>We investigated how physical and chemical factors affect Chlorophyll a concentrations in the Mississippi River, the largest river in North America, by sampling 878 times from February 1997 to December 2018 near its terminus at Baton Rouge, Louisiana. Measured values included temperature, light (secchi disk), suspended sediments, and nutrients (nitrate+nitrite, phosphate, TP, TN, ammonium, silicate) that may affect phytoplankton communities. The data are available for unrestricted use.</p>
Nipponaclerda biwakoensis infestation of Phragmites australis in the Mississippi River Delta, USA: Do fungal microbiomes play a role?
<p>Recently, significant die-back of nonnative common reed, <i>Phragmites australis,</i> has been reported in the Mississippi River Delta (MRD), Louisiana, USA. This dieback has been attributed to an invasive scale insect, <i>Nipponaclerda biwakoensis</i>. We test whether fungi are involved in the recent infestation by this insect and subsequent die-offs of <i>Phragmites australis</i>. Several haplotypes of <i>P. australis</i> occur in the MRD, and the European (M) and Delta (M1) haplotypes appear to experience differing levels of <i>N. biwakoensis </i>infestation. We tested whether these haplotypes differed in their fungal microbiomes in both their leaf and stem tissues, and whether differences in fungal community composition were linked to the level of infestation using a metabarcoding Internal Transcribed Spacer (ITS) amplicon sequencing approach. Our analyses showed differences in fungal community composition and diversity between haplotypes and tissue types, but none of these differences were directly correlated with <i>N. biwakoensis</i> infestation severity. However, we did find that the European haplotype hosted higher putative pathogen loads in stem tissues compared to the Delta haplotype, which may confer resistance to herbivory, though it is possible that differences in infestation between haplotypes are due to morphology.</p>
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