Why It Is Time to Put PHABSIM Out to Pasture
The Physical Habitat Simulation System (PHABSIM) was developed in the 1970s to fill an important void in instream flow assessment. Read More
News
Fisheries News & Science
Examining One State’s Regulation Development Process to Manage Alien Crayfish Introductions
We present a case study of our state agency’s approach to collecting data to support regulation development and accompanying educational efforts in Missouri. We studied other agencies’ approaches, industry pathways, and stakeholder groups to develop and support regulations. Read More
Pacific Salmon Prespawn Mortality: Patterns, Methods, and Study Design Considerations
Adult Pacific salmon may reach spawning grounds but perish before reproducing, a phenomenon known as “prespawn mortality." Read More
Conservation Leverage: Ecological-Design Culverts also Return Fiscal Benefits
“Ecological design” culverts have perceived fiscal limitations that have prevented widespread implementation and consequently hampered conservation and remediation of stream ecosystems. We addressed these perceived fiscal limitations using cost–benefit analysis to estimate the lifetime fiscal net benefits of ecological design culverts over hydraulic culverts Read More
Assessing the Utility of a Smartphone App for Recreational Fishery Catch Data
There is a need to improve the management of recreational fisheries, and some organizations have begun piloting and implementing opt-in, self-reporting smartphone and tablet apps to further that goal. We began the process of developing a methodology for assessing the utility of these apps for management by comparing the Snook and Gamefish Foundation’s iAngler app... Read More
Environmental DNA Effectively Monitors Aquatic Species Populations
Environmental DNA (eDNA), the nuclear or mitochondrial DNA shed from an organism into its environment, is a rapidly evolving tool for monitoring the distribution of aquatic species. A new study published in Transactions of the American Fisheries Society discusses the ability of eDNA to accurately predict the presence, relative abundance, and biomass of wild Brook... Read More
Graphical Function Mapping as a New Way to Explore Cause-and-Effect Chains
Graphical function mapping provides a simple method for improving communication within interdisciplinary research teams and between scientists and nonscientists. Read More
Emergency Fish Passage at a Fractured Mainstem Columbia River Dam
On February 24, 2014, a hydro mechanic from Grant County Public Utility District (PUD) discovered an anomaly in the handrail and track on the deck of Wanapum Dam. Read More
Stakeholder Views of Management and Decision Support Tools to Integrate Climate Change into Great Lakes Lake Whitefish Management
Decision support tools can aid decision making by systematically incorporating information, accounting for uncertainties, and facilitating evaluation between alternatives. Read More
Ecological and Economic Consequences of Ignoring Jellyfish: A Plea for Increased Monitoring of Ecosystems
Gelatinous zooplankton can dominate the dynamics of marine ecosystems; can have major ecological, social, and economic impacts; are often indicative of broader ecosystem perturbations; and are increasingly being harvested by humans. Read More