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Filter Total Items: 175505

Phenotypic homogenization and potential fitness constraints following non-native introgression in an endemic sportfish Phenotypic homogenization and potential fitness constraints following non-native introgression in an endemic sportfish

Introgressive hybridization may lead to contrasting evolutionary outcomes that are difficult to predict since they depend on the fitness effects of endogenous genomic interactions and environmental factors. Conservation of endemic biodiversity may be more effective with require direct measurement of introgressed ancestry and fitness in wild populations, especially for keystone taxa at...
Authors
Joe C. Gunn, Sarah J. Clements, Grant Adams, Edward M. Sterling, Michael J. Moore, Taylor N. Volkers, Lori S. Eggert

Climate-smart agriculture for Ukraine: Winter wheat breeding for food security and climate adaptation Climate-smart agriculture for Ukraine: Winter wheat breeding for food security and climate adaptation

Since the onset of the COVID-19 pandemic in early 2020, people have experienced food insecurity challenges because of increased prices of staple food commodities and loss of income or livelihood. Globally, countries with limited capacity to adapt have struggled to recover from pandemic-related disruptions and are further challenged to address adverse effects of climate change on...
Authors
Veronica Romero, August Raleigh Schultz, Kathryn Powlen, Sachin D. Shah

Converting non-standard data to standardized data Converting non-standard data to standardized data

Fishery biologists spend considerable effort over multiple years collecting data on fish population and community status using a particular sampling method or set of methods. However, new (and often more effective) sampling methods and technologies are continuously being developed. To incorporate these new sampling techniques, fishery biologists need a means for converting fish sampling...
Authors
James T. Peterson, Derrick T. de Kerckhove, Henrique C. Giacomini, Craig Paukert

Coldwater fish in wadeable streams Coldwater fish in wadeable streams

Although we are consistent with the past edition of this volume regarding standard sampling techniques for wadeable, coldwater streams, this edition reflects recent literature, advances in calibrating numbers, and obtaining lengths of fish collected and provides additional clarity regarding effort. We also specify a minimum of two netters and one electrofisher operator for backpack...
Authors
Jeffrey A. Falke, Jason Dunham, Amanda E. Rosenberger, Russell F. Thurow, Andrew Dolloff, Philip J. Howell, W. Carl Saunders

An introduction to standardized sampling An introduction to standardized sampling

In 2009, the first edition of Standard Methods for Sampling North American Freshwater Fishes was published. This was the first time in the history of fisheries science that standardization of methods and equipment had taken place on such a large geographic scale. Since its publication, the methods have been used extensively across North America by local, state, and federal agencies...
Authors
Scott A. Bonar, Joseph D. Conroy, Salvador Contreras-Balderas, Alison C. Iles

A strategic and science-based framework for management of invasive annual grasses in the sagebrush biome A strategic and science-based framework for management of invasive annual grasses in the sagebrush biome

In the last 20 years, the North American sagebrush biome has lost over 500,000 ha of intact and largely intact sagebrush plant communities on an annual basis. Much of this loss has been associated with expansion and infilling of invasive annual grasses (IAGs). These species are highly competitive against native perennial grasses in disturbed environments, and create fuel conditions that...
Authors
Chad S. Boyd, Megan K. Creutzburg, Alexander V. Kumar, Joseph T. Smith, Kevin E. Doherty, Brian A. Mealor, John B. Bradford, Matthew Cahill, Stella M. Copeland, Cameron A. Duquette, Lindy Garner, Martin C. Holdrege, Bill Sparklin, Todd B. Cross

Effect of invasive plant removal on the density of Peromyscus sonoriensis (western deer mice) in Point Reyes National Seashore, California, USA. Effect of invasive plant removal on the density of Peromyscus sonoriensis (western deer mice) in Point Reyes National Seashore, California, USA.

Non-native plants can affect communities through direct competition, and by providing refuge to seed predators, creating apparent competition with native plants. Ammophila arenaria (European beachgrass) has been introduced to coastal dune habitats throughout the western United States where it forms dense monocultures, stabilizes dunes, and alters abiotic and biotic conditions. The...
Authors
Jonathan P. Rose, Lorraine S Parsons, Patrick M. Kleeman, Brian J. Halstead

Statistical analysis Statistical analysis

Effective monitoring of populations is critical for assessing the efficacy of conservation and management activities, determining the conservation status of a species, and examining trends over time. However, far too often, monitoring efforts fall short of adequately describing the population. Poorly defined problems and objectives, a lack of standard operating procedures, a poor...
Authors
David R Stewart, Kristin M Broms, Ken G Gerow, Micheal A Allen, Michael C. Quist

Standard data management practices Standard data management practices

Accomplishing data management in a standardized and practical way begins with an understanding of what data management is. The Data Management Association defines data management as “the development, execution, and supervision of plans, policies, programs, and practices that deliver, control, protect, and enhance the value of data and information assets throughout their lifecycles”...
Authors
Rebecca Krogman, Jennifer M. Bayer, Arthur Cooper, Jeff Kopaska, Nancy J. Leonard, Jeremy Pritt, Colleen Roe, Erin Tracy, Paul A. Venturelli, Daniel J. Wieferich, Dana M. Infante

Standardizing electrofishing power Standardizing electrofishing power

No abstract available.
Authors
Leandro E. Miranda, J.B. Reynolds, J.C. Dean, C.R. Dolan, J.D. Buckwalter

U.S. Geological Survey Karst Interest Group proceedings, Nashville, Tennessee, October 22-24, 2024 U.S. Geological Survey Karst Interest Group proceedings, Nashville, Tennessee, October 22-24, 2024

Karst hydrogeologic systems represent challenging and unique conditions to scientists studying groundwater flow and contaminant transport. Karst terrains are characterized by distinct and beautiful landscapes, caverns, and springs, and many of the exceptional karst areas are designated as national or state parks. The range and complexity of landforms and groundwater flow systems...

Warmwater fish in small standing waters Warmwater fish in small standing waters

No abstract available.
Authors
M.K. Flammang, D.E. Shoup, P.H. Michaletz, Kevin L. Pope
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