Great Lakes Research Vessel Catch (RVCAT) Database

The Great Lakes Research Vessel Catch (RVCAT) database is managed at the Great Lakes Science Center (GLSC). RVCAT has been used as the primary data collection tool aboard the GLSC’s research vessel operations across the Great Lakes. Content: The data set has been collected on various vessel operations on all the Great Lakes and select connecting waterways between the years 1930-2021. Data collection begins in early spring and ends in late fall. Each vessel operation was completed for a specific purpose, or target mission. Data Structure: These data are collected at the GLSC in the RVCAT Oracle database. This database has been broken down into comma separated value (csv) spreadsheets in order to facilitate greater...

Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Larval lake whitefish diets in western Lake Erie during 2018, 2019, and 2021

Recent declines in Lake Whitefish population abundance has prompted research to identify underlying mechanisms controlling survival of early life stages in the Great Lakes. In Lake Erie, the recruitment bottleneck window determining year class strength of Lake Whitefish occurs during the first growing season, suggesting that availability of prey could be controlling year class strength. Therefore, spatial and seasonal larval Lake Whitefish distribution, diet, and environmental zooplankton (potential prey) were collected to evaluate larval Lake Whitefish diets at 31 locations in the western basin during 2017, 2018, and 2021. We removed gut tracks of larval lake whitefish and identified diet items to lowest possible...

Categories: Data; Tags: Aquatic Biology, Coregonus clupeaformis, Ecology, Fish, Great Lakes, All tags... Lake Erie, Lake Whitefish, Limnology, USGS Science Data Catalog (SDC), Western Lake Erie, aquatic biology, biota, diets, ecology, environment, fish, food consumption, inlandWaters, larval fish, zooplankton, Fewer tags

Physical Oceanography for the Northwest Atlantic Marine Ecoregional Assessment

Includes: Seasonal data on Zooplankton - biomass data were obtained from the COPEPOD database (NOAA) for 1977-2007, Chlorophyll - measured to determine phytoplankton concentration, Sea Surface Temperature - data were extracted from three dimensional climatologies representing 28 years from 1980 - 2007, averaged, and interpolated with ordinary kriging to produce a smooth surface, and Stratification - data helps describe the physical environment of the water column near the surface. These data help to understand the seasonal patterns of mixing and stratification that help to determine areas of high productivity and benthic-pelagic coupling.

Categories: Data; Tags: Data, LCC Network Science Catalog, North Atlantic Landscape Conservation Cooperative Data.gov, chlorophyll, completed, All tags... namera, phytoplankton, sea temperature, seasonal, stratification, zooplankton, Fewer tags

Great Lakes Research Vessel Operations 1958-2018: OP. (ver. 3.0, April 2019)

These data have been collected on various vessel operations on the Great Lakes and select connecting waterways. This vessel operations data set is part of and connected to a larger database of Great Lakes research that includes trawl and gillnet catch data, sample information of fish species caught, as well as effort applied, operation conditions, and location details. The larger database also contains data on hydroacoustics, ichthyoplankton, zooplankton, zebra mussel, and benthos samples collected. Multiple operations were conducted on all Great Lakes each year (1958-2016) beginning in early spring and ending in late fall. Each vessel operation was completed for a specific purpose, or target mission, which are...

Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Benthos and Plankton data for Waukegan Harbor Area of Concern, Illinois, and Burns Harbor-Port of Indiana Non-Area of Concern, Indiana, in 2015

During two seasonal sampling events in spring (June) and fall (August) of 2015, the U.S. Geological Survey, in cooperation with the Illinois Department of Natural Resources and the U.S. Environmental Protection Agency, collected benthos (benthic invertebrates) and plankton (zooplankton and phytoplankton) at three sites each in the Waukegan Harbor Area of Concern (AOC) in Illinois and in Burns Harbor-Port of Indiana, a non-AOC, in Indiana. Physical and chemical data were sampled concurrently (specific conductance, temperature, pH, dissolved oxygen, chlorophyll-a, total and volatile suspended solids in water samples; particle size and volatile-on-ignition solids of sediment in benthic grab samples). Benthos were collected...

Categories: Data; Tags: Burns International Harbor, USGS Science Data Catalog (SDC), Waukegan Harbor, benthos, phytoplankton, All tags... plankton, zooplankton, Fewer tags

Pesticide Concentrations Measured in Zooplankton Samples Collected from the Sacramento River and Yolo Bypass, California, 2017-2020

Zooplankton samples were collected at a site in the Yolo Bypass in Northern California and at a comparison site on the Sacramento River below the city of Sacramento and analyzed for a large suite of current-use pesticides and degradates. Samples were collected biweekly in the summer/fall 2017 and 2018, and from May 2019−March 2020. Samples were collected by towing a 150-micron conical plankton net for 5 minutes by boat at each site. In the laboratory, zooplankton samples were filtered through a 63-micrometer sieve to separate the zooplankton and vegetation/detritus from the water. Large sticks, twigs, rocks, and leaves were rinsed with organic free water into the sieve and then discarded. The remaining mass in the...

Categories: Data; Tags: California, Environmental Health, Hydrology, Sacramento, USGS Science Data Catalog (SDC), All tags... Water Quality, Zooplankton, environment, pesticide and herbicide contamination, Fewer tags

Ocean Biogeographic Information System (OBIS) - USA Dataset Collection

OBIS-USA brings together marine biological occurrence data – recorded observations of identifiable marine species at a known time and place, collected primarily from U.S. Waters or with U.S. funding. Coordinated by the Core Science, Analytics, Synthesis, and Libraries (CSAS&L) Program of the United States Geological Survey (USGS), OBIS-USA, strives to meet national data integration and dissemination needs for marine data about organisms and ecosystems. OBIS-USA is part of an international data sharing network (Ocean Biogeographic Information System, OBIS) coordinated by the Intergovernmental Oceanographic Commission, of UNESCO (United Nations Educational, Science and Cultural Organization International Oceanographic...

Categories: Project; Types: NSDI Cooperative Agreements Program Project; Tags: Arctic Ocean, Atlantic Ocean, Bay of Fundy, Beaufort Sea, Bering Sea, All tags... Bering Strait, Biodiversity, Biological Production, Birds, Bristol Bay, Canada, Caribbean Sea, Census of Marine Life, Chukchi Sea, Commericial Leases, Cook Inlet, Cruise Ships, Distributions, Fishes, Flora, Great Lakes, Gulf of Alaska, Gulf of California, Gulf of Maine, Gulf of Mexico, Habitat, Harvesting Living Resources, Invasive Species, Invertebrates, Kotzebue Sound, Kuskokwim Bay, Mammals, Marine Protected Areas (MPAs), North America, Norton Sound, OBIS, Ocean Biogeographic Information System, Offshore Oil and Gas Production, Pacific Ocean, Puget Sound, Reptiles, Sargasso Sea, Shelikof Strait, South Atlantic Bight, Southern Ocean, Straits of Florida, United States, Wind Energy Production, Yucatan Channel, abundance, algae, animal and plant census, aquatic biology, aquatic ecosystems, benthic ecosystems, benthic habitat, benthos, biodiversity, biogeography, biological productivity, biology, biota, biota, coastal habitat, consumers (organisms), coral reefs, decomposers, ecosystem diversity, ecosystem functions, endemic species, estuarine ecosystems, fisheries management, fishery resources, invasive species, macroinvertebrates, marine animals, marine biology, marine ecosystems, marine mammals, microbes, migratory species, native species, nekton, nonindigenous species, oceans, pelagic habitat, phytoplankton, plankton, plants, plants (organisms), producers (organisms), protected species, reef ecosystems, reef habitat, sea birds, sea turtles, shellfish, species diversity, vegetation, vertebrates, wildlife, zooplankton, Fewer tags

Lake Erie Collaborative Science and Monitoring Initiative 2014

In 2014, the USGS Lake Erie Biological Station participated in the Coordinated Science and Monitoring Initiative (CMSI) program, a program founded by the U.S. Environmental Protection Agency (EPA) and Environment Canada in the 1990s as a means to focus collaborative research attention on one of the five Great Lakes each year (on a rotating schedule) as a means to increase scientific knowledge for Great Lakes restoration. The Lake Erie survey examined the food web across a nearshore to offshore gradient, matching the sampling design the preceding USGS studies of the other four Great Lakes (2010-2013). We sampled all trophic levels in all three lake basins across multiple seasons in order to determine nutrient availability...

Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Lake Erie, Michigan, Nutrient cycling, Ohio, Ontario, All tags... USGS Science Data Catalog (SDC), Zooplankton, aquatic ecosystems, benthic ecosystems, biota, field sampling, fish, food web, inlandWaters, nutrient content (water), population dynamics, Fewer tags

Survey data of larval fish, zooplankton, and aquatic plants collected from the St. Clair River delta, MI (2010-2011)

The St. Clair River delta, part of the St. Clair-Detroit River System (SCDRS), is the most fished coastal wetland area in the Laurentian Great Lakes and provides nursery habitat for a variety of fish species; however, few large-scale surveys of early fish life stages have been performed since the 1980s. Larval fish, zooplankton, and aquatic plants were sampled at 21 sites in delta channels and backwaters of the St. Clair-Detroit River System (SCDRS; USA/CAN) from May to July in 2010 and 2011 to characterize the habitats and resources used by larval fish in the delta. Larval fish were captured using conical nets and light traps, and diets from larval white sucker (Catostomus commersonii) were collected at three sites.

Categories: Data; Tags: Aquatic Biology, Ecology, Great Lakes, Lake St. Clair, USGS Science Data Catalog (SDC), All tags... Zooplankton, animal and plant census, biota, fish, plants (organisms), Fewer tags

Great Lakes Research Vessel Operations 1958-2018. (ver. 3.0, April 2019)

The Great Lakes Research Vessel Operations data release is taken from the Research Vessel Catch (RVCAT) database curated at the Great Lakes Science Center (GLSC). RVCAT has been used as the primary data collection tool aboard the GLSC’s research vessel operations. Content: The data set has been collected on various vessel operations on all the Great Lakes and select connecting waterways between the years 1958-2018. Data collection begins in early spring and ends in late fall. Each vessel operation was completed for a specific purpose, or target mission, which are enumerated in this data set. In addition to vessel operations data, RVCAT collects trawl and gillnet catch data, sample information of fish species caught,...

Types: Citation; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, USGS Science Data Catalog (SDC), Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Zooplankton, phytoplankton, and water-quality data for Nolin Lake, Kentucky during a midwinter swarm by the exotic cladoceran Daphnia lumholtzi, 2016-17

This U.S. Geological Survey Data Release provides data collected from Nolin Lake Kentucky, during 2016 to 2017. Two types of data are reported: zooplankton and phytoplankton data are raw calculated values not rounded to USGS significant figures and continuous water-quality data collected with a multi-parameter sonde. The zooplankton, phytoplankton, and water-quality data describe a swarm of the invasive cladoceran Daphnia lumholtzi (D. lumholtzi) Sars, 1885 in a Kentucky USA reservoir during midwinter 2017.

Categories: Data; Tags: Daphnia lumholtzi, Division, Ecology, Ephippia, Genus, All tags... Invasive Species, Kentucky, Nolin Reservoir, Phytoplankton, Species, Swarm Event, Taxa, USGS Science Data Catalog (SDC), USGS Station ID 03310900, United States, Water Chemistry, Water Quality, Water Resources, Zooplankton, Fewer tags

Phytoplankton and Zooplankton Data for Upper Klamath Lake, Oregon, 2020

This U.S. Geological Survey (USGS) Data Release provides phytoplankton data from Upper Klamath Lake, OR from 5/11/2020 - 9/30/2020 from ten sites and zooplankton data from Upper Klamath Lake, OR from 5/11/2020 - 10/14/2020 from eight sites. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported. Zooplankton data are reported to the lowest possible taxonomic level, biomass and density are also reported.

Categories: Data; Tags: Aquatic Biology, Environmental Health, Oregon, USGS Science Data Catalog (SDC), United States, All tags... Upper Klamath Lake, Water Quality, phytoplankton, species, taxonomy, zooplankton, Fewer tags

Great Lakes Research Vessel Operations 1958-2018: Benthos Ponar. (ver. 3.0, April 2019)

All benthos data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and it’s partners. The Benthos Tables contain data collected from the research vessel deploying various gear used for benthos data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Benthos are: Benthos_Comments.csv, Benthos_Ponar.csv, and Benthos_LF Data Quality: Note that the following data release is a snapshot of the database at the time of release. Some data quality checks are still being undertaken after the time of release. Also, a large section of this database includes legacy data that...

Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Great Lakes Research Vessel Operations 1958-2018: Mysis. (ver. 3.0, April 2019)

All mysis data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Mysis Tables contain data collected from the research vessel deploying various gear used for mysis data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Mysis are: Mysis_Catch.csv, Mysis_IND.csv, Mysis_OP.csv, and MY_IND Data Quality: Note that the following data release is a snapshot of the database at the time of release. Some data quality checks are still being undertaken after the time of release. Also, a large section of this database includes legacy data that if issues...

Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Great Lakes Research Vessel Operations 1958-2018: Trawl. (ver. 3.0, April 2019)

All trawl data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Trawl Tables contain data collected from the research vessel deploying various gear used for trawl data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Trawl are: Bucket.csv, Prey_Length.csv, Prey_Total.csv, TR_Annulus.csv, TR_Catch.csv, TR_Fish.csv, TR_L.csv, TR_LF.csv, TR_LMMB_Fish_Prey.csv, TR_LMMB_Invert_Prey.csv, TR_OP.csv, TR_Prey.csv, TR_Sub.csv, sub_prey_total.csv, and sub_prey_length.csv Data Quality: Note that the following data release is a snapshot of the database...

Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Great Lakes Research Vessel Operations 1958-2018: Reference. (ver. 3.0, April 2019)

The RVCAT database contains data that have been collected on various vessel operations on the Great Lakes and select connecting waterways. This section of Reference Tables specifically handles repetitive or standardized information that is called upon in the main tables of the RVCAT database. Reference tables are used in database design in order to standardize often used values and to make the data file efficient. All of the terms defined in the reference tables have been determined by the United States Geological Survey, Great Lakes Science Center and it’s partners. Data Quality: Note that the following data release is a snapshot of the database at the time of release. Some data quality checks are still being...

Categories: Data; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags... Deepwater, Deepwater Sculpin, Detroit River, Emerald Shiner, Gillnet, Habitat, Hydroacoustic, Ichthyoplankton, Lake Erie, Lake Huron, Lake Michigan, Lake Ontario, Lake Saint Clair, Lake Superior, Lake Trout, Lake Trout Population Dynamics, Laurentian Great Lakes, Mensuration, Mysis, Prey fish, Prey fish population dynamics, Rainbow Smelt, Round Goby, Saint Clair River, Sea Lamprey, Slimy Sculpin, Spoonhead Sculpin, Trawl, Walleye, White Perch, Yellow Perch, Zebra Mussel, Zooplankton, acoustics, age estimation methods, age structure, biogeography, biological sampling, biomass, biota, environment, fall forage fish, field sampling, fishery management, food web, freshwater fishes, geospatial datasets, gillnets, inlandWaters, invasive species, population dynamics, surface water temperature, time series datasets, transect sampling, trawl nets, trawling, water temperature, Fewer tags

Rotifera in Lake Pepin in the Upper Mississippi River from 2012 to 2015: Data

Limited information is known regarding the rotifer community on the Upper Mississippi River (UMR). Studies have shown that rotifers are a common prey for invasive bighead carp (Hypophthalmichthys nobilis) and silver carp (H. molitrix) as well as native fishes of the UMR and there is concern these invasive carp will compete with native fishes for food resources. This study was conducted to provide baseline rotifer community data before range expansion of these invasive carps into the upper reaches of the UMR. Vertical tows were taken to collect rotifer samples over a four year period in Lake Pepin, a natural riverine lake in Pool 4 of the UMR. Four dominant genera (Keratella, Polyarthra, Trichocerca and Brachionus)...

Categories: Data; Tags: Lake Pepin, Lake Pepin, Rotifers, USGS Science Data Catalog (SDC), Upper Mississippi River, All tags... biota, invasive carp, zooplankton, Fewer tags

Geochemical data for water, sediment, and biota in Lake Combie, California, 2017-2021

This dataset includes field measurements and laboratory analyses of surface water, bottom water (sediment-water interface), surficial (0-2 cm) sediment, pore water (0-2 cm), and biota collected in Lake Combie, California, from September 2017 through August 2021. The study area includes six sites within the reservoir where discrete samples of surface water, bottom water, sediment, and pore water were taken along the length of the reservoir at the following distances from the spillway: 0.07 miles, 0.5 miles, 0.9 miles, 1.2 miles, 1.3 miles, and 1.4 miles. The within-reservoir sites were sampled during September 2017, February 2018, and May 2018, prior to a large sediment removal operation, and again during September...

Categories: Data; Tags: California, Geochemistry, Hydrology, Lake Combie, Limnology, All tags... USGS Science Data Catalog (SDC), Upper Bear, Water Quality, Zooplankton, bioaccumulation, biota, chemical analysis, dissolved metals, environment, field sampling, fish, geoscientificInformation, inlandWaters, mercury, mercury analysis, mercury contamination, methyl mercury, methylmercury, optical methods, reservoir, sediment analysis, suspended material (water), water chemistry, water properties, water quality, Fewer tags

Exploring nearshore-offshore linkages in energy transfer within Great Lakes food webs: implications for fish production in Lake Michigan in support of CSMI 2015

Description of Work Since the early 2000s, the LaMP has proposed adding nutrients (specifically phosphorus) to its “pollutant of concern” list, given that excessive nutrients were believed to cause impairments in the nearshore waters. Since that time, scientists have highlighted the “shunting” of nutrients to the nearshore, owing to the ability of invasive dreissenid mussels to capture some portion of allochthanous phosphorus that enters the lake through tributaries. These changes are believed to underlie a series of changes in the nearshore, including increased biomass of cladophora and hypothesized increases in benthic and pelagic biomass, including zooplankton and fish. As an extension, this model proposes the...

Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Accountability, CSMI, Ecosystem health, GLRI, Great Lakes Restoration Initiative, All tags... Great Lakes Restoration Initiative, Invasive species, Lake, Lake:Lake Michigan, Template 52, Template 74, Trend analysis, Watershed, Watershed:Lake Michigan Basin, bethos, dreissenid mussels, fish production, nearshore, phosphorus, size spectrum, zooplankton, Fewer tags

Spatial and temporal dynamics of suspended particle characteristics and composition in Navigation Pool 19 of the Upper Mississippi River data

Suspended particles are an essential component of large rivers influencing channel geomorphology, biogeochemical cycling of nutrients, and food web resources. The Upper Mississippi River (UMR) is a large floodplain river that exhibits pronounced spatiotemporal variation in environmental conditions and biota, providing an ideal environment for investigating dynamics of suspended particles in large river ecosystems. Here we investigated two questions: (1) How do suspended particle characteristics (e.g., size and morphology) vary temporally and spatially? and (2) What environmental variables have the strongest association with particle characteristics? Water sampling was conducted in June, August, and September of...

Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Keokuk, Lock and Dam 18, Lock and Dam 19, Mississippi River, Navigation Pool 19, All tags... Upper Mississippi River, discharge, nutrients, phytoplankton, plankton, suspended particle characteristics, zooplankton, Fewer tags