Maryland

Filter Total Items: 96
Date published: January 24, 2017
Status: Active

USGS contributes to new STAC report on designing sustainable coastal habitats

The purpose of the Designing Sustainable Coastal Habitats workshop and the approach the workshop steering committee used to bring together scientists, habitat restoration partners, and policy makers to address three goals.  The three workshop goals or themes were to:  

1. Assess the current status and trending condition of coastal ecosystems in the Chesapeake Bay watershed; 

2....

Date published: January 24, 2017

USGS contributes to new STAC report on designing sustainable coastal habitats

The purpose of the Designing Sustainable Coastal Habitats workshop and the approach the workshop steering committee used to bring together scientists, habitat restoration partners, and policy makers to address three goals.  The three workshop goals or themes were to:  

1. Assess the current status and trending condition of coastal ecosystems in the Chesapeake Bay watershed; 

2....

Date published: January 24, 2017
Status: Active

USGS works with academic and CBP partners to summarize science on water-quality

Pollution-reducing practices can improve water quality in the Chesapeake Bay and its rivers and streams, according to new research from the Chesapeake Bay Program partnership. In a report released today, a number of case studies show that “best management practices”—including upgrading wastewater treatment plants, lowering vehicle and power plant emissions and reducing runoff from farmland—...

Date published: December 19, 2016
Status: Active

Spatial Capture-Recapture Models to Estimate Abundance and Density of Animal Populations

The Challenge: For decades, capture-recapture methods have been the cornerstone of ecological statistics as applied to population biology.  While capture-recapture has become the standard sampling and analytical framework for the study of population processes (Williams, Nichols & Conroy 2002) it has advanced independent of and remained unconnected to the spatial structure of the population...

Date published: December 19, 2016
Status: Active

Hierarchical Models for Estimation of Population Parameters

The Challenge: Much of wildlife research consists of the description of variation in data. Some of the variation results from spatial and temporal change in populations, while some results from biologically irrelevant sampling variation induced by the process of data collection. Distinguishing relevant from irrelevant variation is the first task of statistical analysis, but the job does not...

Date published: December 19, 2016
Status: Active

Managing Free-Roaming Cats at the Patuxent Research Refuge

The Challenge: Free-roaming cats (Felis catus) are nonnative predators of small mammals, songbirds and gamebirds, reptiles, amphibians, and insects. They are also competitors of native predators and vectors for diseases to human and wildlife. The US Fish and Wildlife Service is authorized to remove cats from National Wildlife Refuges. Presently cat trapping on Refuge lands is conducted...

Date published: December 14, 2016
Status: Active

Development of Computer Software for the Analysis of Animal Population Parameters

Biologists at USGS Patuxent, as well as cooperating agencies are constantly looking for new ways of answering questions about the status of animal populations and how animal populations change over time. To address these questions, data are collected on captures and or sightings of animals which can be used to estimate parameters which affect the population using legacy software. Over time,...

Contacts: James Hines
Date published: October 4, 2016
Status: Active

Structured Decision Making: Methods, Applications, and Capacity-Building

The Challenge: The field of decision analysis is a rich and mature discipline that provides robust methods for helping decision makers understand the nature of their decisions, involve stakeholders and scientists in appropriate steps of the process, and develop transparent records for the public. The use of these structured approaches is emerging in natural resource management, and there is...

Date published: September 28, 2016

Geomorphic Responses to Stream Channel Restoration at Minebank Run, Baltimore County, Maryland

Urban streams frequently undergo severe incision and erosion due to flashy streamflows caused by impervious surfaces in the watershed. The study was designed to investigate the hydrodynamics and geomorphology of a selected reach of Minebank Run before and after stream restoration, in order to determine the effect that stream restoration had on sediment processes in the stream.

Date published: September 28, 2016

Surge, Wave, and Tide Hydrologic (SWaTH) Network in Maryland, Delaware, and the District of Columbia

Many U.S. Geological Survey Water Science Centers have responsibilities for coastal regions within their mission areas. The integrated Surge, Wave, and Tide Hydrologic (SWaTH) Network has been developed in the wake of Hurricane Sandy to support model development and verification for coastal regions, detection of hydrologic trends, and early warning of hydrologic hazards in the northeast from...

Date published: September 20, 2016
Status: Active

USGS science contributes to "Water quality improves, pollution falls in the Chesapeake Bay"

Data show significant drop in nutrient and sediment loads

Date published: September 20, 2016
Status: Active

Improving Our Ability to Forecast Tidal Marsh Response to Sea Level Rise

Our overall objective is to understand what controls the vulnerability of coastal marshes to risks associated with global change drivers and rising sea levels. Fundamental questions pertaining to coastal wetland vulnerability still need to be addressed. What factors explain spatial and geographic variation in tidal wetland vulnerability? How do short term climatic events (storms) influence the...