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This posting contains the source climate data used to run the SWAT model in the Tuckahoe and Greensboro subwatersheds of the Choptank River watershed, Maryland.
We illustrate the utility of expert elicitation, explicit recognition of uncertainty, and the value of information for directing management and research efforts for invasive species, using tegu lizards (Salvator merianae) in southern Florida as a case study. We posited a post-birth pulse, matrix model, which was parameterized using a 3-point process to elicit estimates of tegu demographic rates from herpetology experts. We fit statistical distributions for each parameter and for each expert, then drew and pooled a large number of replicate samples from these to form a distribution for each demographic parameter. Using these distributions, we generated a large sample of matrix models to infer how the tegu population...
Categories: Data;
Types: Citation;
Tags: Miami-Dade County, FL,
USGS Science Data Catalog (SDC),
Wildlife Biology,
expert elicitation,
invasive species,
The U.S. Geological Survey maintains a program of water-quality studies in San Francisco Bay (CA) that began in 1969. This USGS data release archives and makes available all measurements from 1969-2015. Water-quality constituent measurements include salinity, temperature, light attenuation coefficient, and concentrations of chlorophyll-a, dissolved oxygen, suspended particulate matter, and dissolved inorganic nutrients (nitrate, nitrite, ammonium, phosphate and silicate). Since the mid-1990s, sampling was conducted at least monthly at 37 fixed sampling locations along a 145-km transect from lower South San Francisco Bay to the lower Sacramento River. A map and table of sampling locations are included in the Attached...
Categories: Data;
Types: Citation;
Tags: San Francisco Bay, California,
USGS Science Data Catalog (SDC),
chlorophyll-a,
dissolved oxygen,
nutrients,
The stream corridor at the Big Spring Run restoration site has been identified as a substantial source of sediment and nutrients to streams due to streambank erosion and floodplain scour of legacy sediment. Three USGS streamgages were installed and water-quality monitoring began in water year 2009, prior to the legacy sediment removal from the restoration area. The legacy sediment was removed from approximately 4.6 acres within the Big Spring Run study area in the fall of 2011. Monitoring has continued in the post-restoration period. This study was conducted in cooperation with the Pennsylvania Department of Environmental Protection, Franklin and Marshall College, and the US Environmental Protection Agency and examines...
Categories: Data,
Data Release - Revised;
Types: Citation;
Tags: Big Spring Run,
Lancaster,
Legacy sediment,
Pennsylvania,
Sedimentation,
Suspended-sediment concentration, percent by mass finer than 0.0625 millimeters, instantaneous stream discharge, and suspended-sediment discharge for seven sites in the Lower Mississippi-Atchafalaya River Basin have been revised following a program review. This dataset provides the pre- and post-review revised values, along with supporting information as described in the associated publication (Norton and others, 2018). Data are included for October 1989 through February 2015 at seven sites, represented by nine sampling stations. The stations are located near the Old River Control Complex and the lower Atchafalaya River. The original data were collected as part of a cooperative program between the U.S. Geological...
Categories: Data;
Types: Citation;
Tags: Atchafalaya River,
Lower Atchafalaya River,
Mississippi River,
Old River,
Old River Control Complex,
Invasion of North American waters by Dreissena polymorpha and D. rostriformis bugensis has resulted in declines in native North American Unionoida mussels. Dreissenid mussels biofoul unionid mussels in large numbers and interfere with unionid movement, acquisition of food and ability to open and close their shells. Initial expectations for the Great Lakes were that unionids would be extirpated where they co-occur with dreissenids, but recently adult and juvenile unionids have been found alive in several apparent refugia. These unionid populations may persist due to reduced dreissenid biofouling in these areas, and/or due to processes that remove biofoulers. For example, locations inaccessible to veligers may reduce...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Ecological process monitoring,
Lake Erie,
Ohio,
USGS Science Data Catalog (SDC),
biofouling
This posting contains the stream flow and load data used to run the SWAT model in the Tuckahoe subwatershed of the Choptank River watershed, Maryland.
This metadata record provides the latitude, longitude, and a unique ID value (PRISMID) for all raster cells used by the PRISM group at Oregon State University to characterize climate throughout the conterminous United States. The three column format of comma-separated data can be readily joined to the comma-separated climate and water-balance variables described in the associated metadata file "Water Balance Model Inputs and Outputs for the Conterminous United States".
Water temperature and the availability of cold-water refugia are important parameters during summer baseflows when stream water temperatures are at their maximum. The U.S. Geological Survey measured near-streambed and surface water temperatures along the lower Quinault River, on the Olympic Peninsula, Washington between August 9-12, 2016, during summer baseflow conditions. The survey occurred downstream from Lake Quinault from approximately River Kilometer (RK) 4 to approximately RK 49 (45 kilometers total). Near-streambed temperatures and water depths were measured at 1-second intervals, which occur on average at an approximately 1-meter water surface distance interval. Near-streambed temperature and depth were...
Categories: Data;
Types: Citation;
Tags: Olympic Peninsula,
Quinault River,
USGS Science Data Catalog (SDC),
Water Quality,
cold water refugia,
Crustacean zooplankton were collected, enumerated, identified, and measured within the St. Clair-Detroit River System (SCDRS). Collections were made using a 0.5 m diameter 153 um zooplankton net. Nets were lowered to ~0.5 m from bottom depth and retrieved. Nets were utilized with a General Oceanics flowmeter to calculate the distance the net traveled. At sites of collection, both temperature (degrees C) and Secchi depth (m) were collected for abiotic influencing factors of the zooplankton community. Collected specimens were narcotized in sugar formalin. Specimens were enumerated, identified, and measured under a dissection microscope. Volumetric estimates (m^-3) were obtained by applying the distance traveled and...
Categories: Data,
Data Release - Revised;
Types: Citation;
Tags: Detroit River,
Lake Erie,
Lake Huron,
Lake Saint Clair,
Saint Clair River,
c) We examined effects of flooding on supply rates of 14 nutrients in floodplain areas invaded by Phalaris arundinacea (reed canarygrass), areas restored to young successional forests (browsed by white-tailed deer and unbrowsed), and remnant mature forests in the Upper Mississippi River floodplain. Plant Root Simulator ion-exchange probes were deployed for four separate 28-day periods. The first deployment occurred during flooded conditions, while the three subsequent deployments were conducted during progressively drier periods. Time after flooding corresponded with increases in NO3--N, K+ and Zn+2, decreases in H2PO4--P, Fe+3, Mn+2, and B(OH)4-B, a decrease followed by an increase in NH4+-N, Ca+2, Mg+2 and Al+3,...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Herbivory,
Mississippi River,
Navigation Pool 8,
Nutrient cycles,
USGS Science Data Catalog (SDC),
Snail weights and lengths for an apple snail growth study. Large snails were individually weighed to the 100th of a gram and measured to 10th of a mm. Smaller snails were weighed in groups of variable number and then the average weight of the snails in the group recorded. Age of the snails is from hatching data.
Categories: Data;
Types: Citation;
Tags: Louisiana,
Pomacea,
USGS Science Data Catalog (SDC),
apple snails,
growth dynamics
Lake Mead National Recreational Area (LMNRA) serves as critical habitat for several federally listed species and supplies water for municipal, domestic, and agricultural use in the Southwestern U.S. Contaminant sources and concentrations vary among sub-basins within LMNRA. To investigate whether environmental contaminant exposure is associated with alterations in male common carp (Cyprinus carpio) gamete quality and endocrine- and reproductive parameters, data were collected among sub-basins (n = 7) over 7 years (1999 to 2006). Endpoints included the sperm quality parameters of motility, viability, mitochondrial membrane potential, count, morphology, and DNA fragmentation; plasma components were vitellogenin (VTG),...
Categories: Data;
Types: Citation;
Tags: Aquatic Biology,
Boulder Basin,
Callville Bay,
DNA fragmentation,
Echo Bay,
This data set is derived from the original 2005 data collected over the southern San Andreas and San Jacinto fault zones in southern California, USA. These data have provided a fundamental resource for study of active faulting in southern California since they were released in 2005. However, these data were not classified in a manner that allowed for easy differentiation between bare ground surfaces and the objects and vegetation above that surface. This reprocessed (classified) dataset allows researchers easy and direct access to a "bare-earth" digital elevation data set as gridded half-meter resolution rasters (elevation and shaded relief), "full-feature" digital elevation models as gridded one-meter resolution...
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: California,
LiDAR,
USGS Science Data Catalog (SDC)
This U.S. Geological Survey (USGS) data release consists of daily mean base flow, daily precipitation and slug test data collected for a study to determine whether a relation exists between the extent of forest cover and the magnitude of base flow at two sets of paired drainage basins in the highlands of the municipalities of Adjuntas and Utuado within the mountainous interior of Puerto Rico. One set of paired basins includes the Río Guaónica and Río Tanamá, both tributaries of the Río Grande de Arecibo. The other set includes two smaller basins in the drainage basin of the Río Coabey, which is a tributary of the Río Tanamá. The paired basins in each set have similar rainfall patterns, geologic substrate, and aspect;...
Categories: Data;
Types: Citation;
Tags: Adjuntas,
Puerto Rico,
Río Guaónica,
Río Tanamá,
USGS Science Data Catalog (SDC),
A field survey of the lower Cedar River from Landsburg to Renton, WA was conducted on 29 April 2010 from a raft using real-time kinetic global positioning system to determine horizontal location and water surface elevation and a pressure transducer to measure depths along the thalweg of the river. These data were averaged over 100 m intervals to generate water surface elevations, river bed elevations, and depths at regular 10-meter intervals. The water surface and river bed gradients were calculated using the water surface elevations 10 m upstream and 10 m downstream of each point. Each point was assigned as a pool, riffle, or other type. Observations of salmon redds during the fall of 2010 are indicated.
Categories: Data;
Types: Citation;
Tags: Cedar River, King County, Washington,
fluvial geomorphology
This posting contains the source stream flow and load data used to run the SWAT model in the Greensboro subwatershed of the Choptank River watershed, Maryland.
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