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JC Nelson

Regional Science Coordinator

 

 

Science and Products

Publications

Filter Total Items: 14

Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey

Executive SummaryManagers of our Nation’s resources face unprecedented challenges driven by the convergence of increasing, competing societal demands and a changing climate that affects the stability, vulnerability, and predictability of those resources. To help meet these challenges, the scientific community must take advantage of all available technologies, data, and integrative Earth systems mo
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Ecosystems, Water Resources, Science Analytics and Synthesis (SAS), Energy Resources Program, Geology, Energy & Minerals Science Center, Wetland and Aquatic Research Center , Oregon Water Science Center, Southwest Biological Science Center, Oklahoma-Texas Water Science Center, Upper Midwest Environmental Sciences Center

Habitat selection, movement patterns, and hazards encountered by northern leopard frogs (Lithobates pipiens) in an agricultural landscape

Telemetry data for 59 Northern Leopard Frogs (Lithobates pipiens) breeding in ponds in Houston and Winona Counties, MN; 2001-2002. Agricultural intensification is causing declines in many wildlife species, including Northern Leopard Frogs (Lithobates pipiens). Specific information about frog movements, habitat selection, and sources of mortality can be used to inform conservation-focused land mana
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Ecosystems, Upper Midwest Environmental Sciences Center

Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie

Large lakes provide a variety of ecological services to surrounding cities and communities. Many of these services are supported by ecological processes that are threatened by the increasing prevalence of cyanobacterial blooms which occur as aquatic ecosystems experience cultural eutrophication. Over the past 10 yr, Lake Erie experienced cyanobacterial blooms of increasing severity and frequency,
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Ecosystems, Toxic Substances Hydrology, Great Lakes Science Center, Upper Midwest Environmental Sciences Center

Community for Data Integration 2016 annual report

The Community for Data Integration (CDI) represents a dynamic community of practice focused on advancing science data and information management and integration capabilities across the U.S. Geological Survey and the CDI community. This annual report describes the various presentations, activities, and outcomes of the CDI monthly forums, working groups, virtual training series, and other CDI-sponso
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Earth Resources Observation and Science Center, Science Analytics and Synthesis (SAS), Community for Data Integration (CDI), Earth Resources Observation and Science (EROS) Center , Science Data Management

Do rivermouths alter nutrient and seston delivery to the nearshore?

Tributary inputs to lakes and seas are often measured at riverine gages, upstream of lentic influence. Between these riverine gages and the nearshore zones of large waterbodies lie rivermouths, which may retain, transform and contribute materials to the nearshore zone. However, the magnitude and timing of these rivermouth effects have rarely been measured.During the summer of 2011, 23 tributary sy
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Ecosystems, Upper Midwest Environmental Sciences Center

Spatial variation in biofouling of a unionid mussel (Lampsilis siliquoidea) across the western basin of Lake Erie

Invasion of North American waters by nonnative Dreissena polymorpha and D. rostriformis bugensishas resulted in declines of the Unionidae family of native North American mussels. Dreissenid mussels biofoul unionid mussels in large numbers and interfere with unionid movement, their acquisition of food, and the native mussels' ability to open and close their shells. Initial expectations for the Grea
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Ecosystems, Upper Midwest Environmental Sciences Center

Measuring spatial variation in secondary production and food quality using a common consumer approach in Lake Erie

Lake Erie is a large lake straddling the border of the U.S. and Canada that has become increasingly eutrophic in recent years. Eutrophication is particularly focused in the shallow western basin. The western basin of Lake Erie is hydrodynamically similar to a large estuary, with riverine inputs from the Detroit and Maumee Rivers mixing together and creating gradients in chemical and physical condi
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Ecosystems, Upper Midwest Environmental Sciences Center

Relationships between land cover and dissolved organic matter change along the river to lake transition

Dissolved organic matter (DOM) influences the physical, chemical, and biological properties of aquatic ecosystems. We hypothesized that controls over spatial variation in DOM quantity and composition (measured with DOM optical properties) differ based on the source of DOM to aquatic ecosystems. DOM quantity and composition should be better predicted by land cover in aquatic habitats with allochtho
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Ecosystems, Upper Midwest Environmental Sciences Center

Decision support system development at the Upper Midwest Environmental Sciences Center

A Decision Support System (DSS) can be defined in many ways. The working definition used by the U.S. Geological Survey Upper Midwest Environmental Sciences Center (UMESC) is, “A spatially based computer application or data that assists a researcher or manager in making decisions.” This is quite a broad definition—and it needs to be, because the possibilities for types of DSSs are limited only by t
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Ecosystems, Upper Midwest Environmental Sciences Center

Fatty acid composition at the base of aquatic food webs is influenced by habitat type and watershed land use

Spatial variation in food resources strongly influences many aspects of aquatic consumer ecology. Although large-scale controls over spatial variation in many aspects of food resources are well known, others have received little study. Here we investigated variation in the fatty acid (FA) composition of seston and primary consumers within (i.e., among habitats) and among tributary systems of Lake
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Ecosystems, Upper Midwest Environmental Sciences Center

Rivermouth alteration of agricultural impacts on consumer tissue δ15N

Terrestrial agricultural activities strongly influence riverine nitrogen (N) dynamics, which is reflected in the δ15N of riverine consumer tissues. However, processes within aquatic ecosystems also influence consumer tissue δ15N. As aquatic processes become more important terrestrial inputs may become a weaker predictor of consumer tissue δ15N. In a previous study, this terrestrial-consumer tissue
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Ecosystems, Upper Midwest Environmental Sciences Center

An exploratory investigation of the landscape-lake interface: Land cover controls over consumer N and C isotopic composition in Lake Michigan rivermouths

Rivermouth ecosystems are areas where tributary waters mix with lentic near-shore waters and provide habitat for many Laurentian Great Lakes fish and wildlife species. Rivermouths are the interface between terrestrial activities that influence rivers and the ecologically important nearshore. Stable isotopes of nitrogen (N) and carbon (C) in consumers were measured from a range of rivermouths syste
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Ecosystems, Upper Midwest Environmental Sciences Center

Data Management

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Data Management Training Clearinghouse

The purpose of the Data Management Training (DMT) Clearinghouse project was twofold. First, the project aimed to increase discoverability and accessibility of the wealth of learning resources that have been developed to inform and train scientists about data management in the Earth sciences. Secondly, the project team wanted to facilitate the use of these learning resources by providing descriptiv
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Community for Data Integration (CDI)
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Data Management Training Clearinghouse

The purpose of the Data Management Training (DMT) Clearinghouse project was twofold. First, the project aimed to increase discoverability and accessibility of the wealth of learning resources that have been developed to inform and train scientists about data management in the Earth sciences. Secondly, the project team wanted to facilitate the use of these learning resources by providing descriptiv
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Technology

USGS Earthmap Capacity Assessment Dataset

The U.S. Geological Survey provides a wide range of scientific information to an even wider group of stakeholders. Understanding what capacities are needed and if and or where these capacities exist across the USGS landscape is critical in moving science to the next level of use, implementation, and visualization. The concept behind the groups organized to conduct and interpret the survey that col

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