March 2011

Archived R5 Science Seminar Series 2011
Quicktime Movie or MP3 File

WHAT: Science Seminar Series - Archived webinar accessible using the link above
WHEN: March 10, 2011 12:00 - 1:00 p.m.
WHO: David R. Smith, USGS Leetown Science Center, Kearneysville, WV
TITLE: Adaptive management of horseshoe crabs in Delaware Bay: linking harvest to shorebird conservation

ABSTRACT: Each spring millions of horseshoe crabs spawn on the beaches of Delaware Bay, which is the epicenter of the American horseshoe crab distribution. Density-dependent numbers of eggs are brought to the beach surface and consumed by migrating shorebirds. Until recently management of Delaware Bay horseshoe crabs and migrant shorebirds had followed traditional species-specific assessments with only qualitative linkages between them. During that time the management process has been marked by dispute and ad hoc decision making. Recently, a group of managers and researchers developed an adaptive management framework that explicitly accounts for multispecies linkages and uncertainties. The decision is now structured as a harvest problem with conservation constraints defined by horseshoe crab and red knot population size. Predictive multispecies models have been developed to predict consequences of harvest actions under uncertainty. Optimal harvest actions are being identified through stochastic dynamic programming. Recently, the Atlantic States Marine Fisheries Commission has endorsed the adaptive management framework. In this talk, we highlight the successes and challenges encountered, as well as the challenges that lie ahead.


Science In Action Series 2011 Archived Recording
Quicktime Movie or MP3 File

WHAT: Science in Action Seminar
WHEN: March 24, 2011 12:00 - 1:00 p.m.
WHO: Margaret Byrne, U.S. Fish and Wildlife Service Region 5 and University of Massachusetts Amherst, Hadley, MA
TITLE: Nanoparticles in the Environment: Identification of Hazards and Opportunities for a Proactive Approach

ABSTRACT: The issue of nanoparticles in the environment exemplifies the need for proactive management and research. Nano-sized chemicals, called nanoparticles, generally exhibit novel chemical characteristics compared to their regular-sized counterparts. Nanoparticles of many different chemicals are used in consumer products and have been linked to negative environmental consequences. Nanosilver particles, used in consumer products to kill germs or reduce odor, negatively impacts bacteria in aquatic ecosystems. Exposure has also been linked to reduced survival and brain damage in fathead minnows. Nanoparticles of iron and other metals are injected into groundwater to break down persistent contaminants. However, the long term impacts of nanoremediation have not been studied. This analysis identifies some hazards of nanoparticles in the environment and opportunities for a proactive approach.

MARGARET BYRNE'S BIO: Margaret Byrne received a MS in environmental health and toxicology at the University of Minnesota School of Public Health. She has worked in the field of environmental health research and communication through The Strategic Counsel on Corporate Accountability, The Investor Environmental Health Network, The Corporate Toxics Information Project, CommunicateHealth, and Clean Water Action's Alliance for a Healthy Tomorrow. She will graduate in May 2011 from the University of Massachusetts Center for Public Policy and Administration, where her studies have focused on the regulation of emerging technologies such as nanotechnology, and communications in environmental policy. Her current internship with the Northeast Region as an Outreach Assistant in the External Affairs and Ecological Services programs focuses on increasing public awareness of contaminants issues.

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