John A. Young
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View article: Causal inference approaches reveal both positive and negative unintended effects of agricultural and urban management practices on instream biological condition
Causal inference approaches reveal both positive and negative unintended effects of agricultural and urban management practices on instream biological condition Open
Agricultural and urban management practices (MPs) are primarily designed and implemented to reduce nutrient and sediment concentrations in streams. However, there is growing interest in determining if MPs produce any unintended positive ef…
Assessing tradeoffs between current and desired vegetation condition in a National Park using historical maps and high‐resolution lidar data Open
In the United States, National Park Service Civil War battlefield units are managed for both historical accuracy (i.e. to represent landscape conditions at the time of the conflict for historical interpretation), and for natural resource p…
Multispecies approaches to status assessments in support of endangered species classifications Open
Multispecies risk assessments have developed within many international conservation programs, reflecting a widespread need for efficiency. Under the United States Endangered Species Act (ESA), multispecies assessments ultimately lead to sp…
View article: Explainable machine learning improves interpretability in the predictive modeling of biological stream conditions in the Chesapeake Bay Watershed, USA
Explainable machine learning improves interpretability in the predictive modeling of biological stream conditions in the Chesapeake Bay Watershed, USA Open
Anthropogenic alterations have resulted in widespread degradation of stream conditions. To aid in stream restoration and management, baseline estimates of conditions and improved explanation of factors driving their degradation are needed.…
Thirteen novel ideas and underutilised resources to support progress towards a range‐wide American eel stock assessment Open
A robust assessment of the American eel ( Anguilla rostrata ) stock, required to guide conservation efforts, is challenged by the species’ vast range, high variability in demographic parameters and data inadequacies. Novel ideas and underu…
Using expert knowledge to support Endangered Species Act decision‐making for data‐deficient species Open
Many questions relevant to conservation decision‐making are characterized by extreme uncertainty due to lack of empirical data and complexity of the underlying ecologic processes, leading to a rapid increase in the use of structured protoc…
View article: Disentangling the potential effects of land‐use and climate change on stream conditions
Disentangling the potential effects of land‐use and climate change on stream conditions Open
Land‐use and climate change are significantly affecting stream ecosystems, yet understanding of their long‐term impacts is hindered by the few studies that have simultaneously investigated their interaction and high variability among futur…
View article: Assessment of Ambystomatid salamander populations and their breeding habitats in the Delaware Water Gap National Recreation Area
Assessment of Ambystomatid salamander populations and their breeding habitats in the Delaware Water Gap National Recreation Area Open
First posted November 23, 2020 For additional information, contact: Director, Leetown Science Center11649 Leetown RoadKearneysville, WV 25430Contact Pubs Warehouse This report presents abundance and occurrence data for three species of amb…
Investigation of suitable habitat for the endangered plant Ptilimnium nodosum (Rose) Mathias (harperella) using remote sensing and field analysis—Documentation of methods and results Open
First posted November 3, 2020 For additional information, contact: Director, Florence Bascom Geoscience CenterU.S. Geological Survey12201 Sunrise Valley DriveReston, VA 21092Contact Pubs Warehouse Ptilimnium nodosum (Rose) Mathias (harpere…
An Integrated Framework for Ecological Drought across Riverscapes of North America Open
Climate change is increasing the severity and extent of extreme droughts events, posing a critical threat to freshwater ecosystems, particularly with increasing human demands for diminishing water supplies. Despite the importance of drough…
Predicting biological conditions for small headwater streams in the Chesapeake Bay watershed Open
A primary goal for Chesapeake Bay watershed restoration is to improve stream health and function in 10% of stream miles by 2025. Predictive spatial modeling of stream conditions, when accurate, is one method to fill gaps in monitoring cove…
Brook trout distributional response to unconventional oil and gas development: Landscape context matters Open
We conducted a large-scale assessment of unconventional oil and gas (UOG) development effects on brook trout (Salvelinus fontinalis) distribution. We compiled 2231 brook trout collection records from the Upper Susquehanna River Watershed, …
Community for Data Integration fiscal year 2017 funded project report Open
First posted November 16, 2018 For additional information, contact: Director, Science Analytics and SynthesisU.S. Geological Survey108 National Center12201 Sunrise Valley DriveReston, VA 20192 The U.S. Geological Survey Community for Data …
Estrogen Equivalents of Surface Water in the Upper Chesapeake Bay Watershed (2008 - 2011) Open
Intersex in small- and largemouth bass has been observed in the upper Chesapeake Bay Watershed since 2003. This observation is indicative of exposure to estrogenic endocrine disrupting chemicals. In order to complement biological data sets…
Predicting the Occurrence of Cave-Inhabiting Fauna Based on Features of the Earth Surface Environment Open
One of the most challenging fauna to study in situ is the obligate cave fauna because of the difficulty of sampling. Cave-limited species display patchy and restricted distributions, but it is often unclear whether the observed distributio…
USGS lidar science strategy—Mapping the technology to the science Open
First posted January 11, 2016 For additional information, contact: Director, National Geospatial Program U.S. Geological Survey 12201 Sunrise Valley Drive 511 National Center Reston, VA 20192 Email:[email protected] http://www.usgs.gov/ngpo/ h…