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Wildlife management is science based: Myth or reality?
In the January/February issue of The Wildlife Professional, a group of wildlife leaders discussed what they considered "myths" in wildlife management and invited other wildlife professionals to contribute their favorites. Here, five wildlife professionals take up that theme with their discussions of the scientific basis of wildlife management.Decker, Daniel J.; Organ, John F.; Forstchen, Ann; Schiavone, Michael V.; Fuller, Angela K.
Comparison of a prepositioned areal electrofishing device and fixed underwater videography for sampling riverine fishes
Prepositioned areal electrofishing devices (PAEDs) are used to evaluate microhabitat use by fishes because they minimize fright biases associated with traditional electrofishing techniques (e.g., boat electrofishing). Similarly, fixed underwater videography (FUV) is commonly used to minimize the effect of observers on fish behavior. The specific...Branigan, Philip R.; Quist, Michael C.; Shepard, Bradley B.; Ireland, Susan C.
Message in a bottle: The story of drifting plastic in the eastern Mediterranean Sea
The Mediterranean Sea is a closed basin with limited water exchange through the Strait of Gibraltar, and sites along its shores show the greatest densities of marine debris in the world. Plastic bottles, which are a growing concern due to high consumption of soft drinks and bottled water, constitute most of the floating marine debris. In this...Pasternak, Galia; Zviely, Dov; Ariel, Asaf; Spanier, Ehud; Ribic, Christine
Animal movement models for migratory individuals and groups
Animals often exhibit changes in their behaviour during migration. Telemetry data provide a way to observe geographic position of animals over time, but not necessarily changes in the dynamics of the movement process. Continuous‐time models allow for statistical predictions of the trajectory in the presence of measurement error and during periods...Hooten, Mevin B.; Scharf, Henry R.; Hefley, Trevor J.; Pearse, Aaron T.; Weegman, Mitch D.
Historical sediment mercury deposition trends for South Dakota lakes
PurposeSelect South Dakota, USA water bodies, including both natural lakes and man-made impoundments, were sampled and analyzed to assess mercury (Hg) dynamics and historical patterns of total Hg deposition.Materials and methodsSediment cores were collected from seven South Dakota lakes. Mercury concentrations and flux profiles were determined...Squillace, Maria K.; Sieverding, Heidi L.; Betemariam, Hailemelekot H.; Urban, Noel R.; Penn, Michael R.; DeSutter, Thomas M.; Chipps, Steven R.; Stone, James J.
Nonbreeding duck use at Central Flyway National Wildlife Refuges
Within the U.S. portion of the Central Flyway, the U.S. Fish and Wildlife Service manages waterfowl on numerous individual units (i.e., Refuges) within the National Wildlife Refuge System. Presently, the extent of waterfowl use that Refuges receive and the contribution of Refuges to waterfowl populations (i.e., the proportion of the Central Flyway...Andersson, Kent; Davis, Craig A.; Harris, Grant; Haukos, David A.
Evaluating outcomes of management targeting the recovery of a migratory songbird of conservation concern
Assessing outcomes of habitat management is critical for informing and adapting conservation plans. From 2013 – 2019, a multi-stage management initiative aims to create >25,000 ha of shrubland and early-successional vegetation to benefit Golden-winged Warblers (Vermivora chrysoptera) in managed forested landscapes of the western Great Lakes...Streby, Henry M.; Kramer, Gunnar R.; Peterson, Sean M.; Andersen, David
Are waterfowl food resources limited during spring migration? A bioenergetic assessment of playas in Nebraska's rainwater basin
Accurate bioenergetic carrying capacity estimates of wetlands on public and private lands, as well as those managed for crop production are important for managing waterfowl populations and habitats. Given the importance of wetlands in the Rainwater Basin region of Nebraska for spring migrating waterfowl, we quantified and compared seed and...Schepker, Travis J.; LaGrange, Ted; Webb, Elisabeth B.
Avian response to shade‐layer restoration in coffee plantations in Puerto Rico
Documenting the evolving processes associated with habitat restoration and how long it takes to detect avian demographic responses is crucial to evaluate the success of restoration initiatives and to identify ways to improve their effectiveness. The importance of this endeavor prompted the U.S. Fish and Wildlife Service and the USDA Natural...Irizarry, Amarilys D.; Collazo, Jaime A.; Pacifici, Krishna; Reich, Brian J.; Battle, Kathryn E.
Chasing a changing climate: Reproductive and dispersal traits predict how sessile species respond to global warming
AimStudies of species' range shifts have become increasingly relevant for understanding ecology and biogeography in the face of accelerated global change. The combination of limited mobility and imperilled status places some species at a potentially greater risk of range loss, extirpation or extinction due to climate change. To assess the ability...Archambault, Jennifer M.; Cope, W. Gregory; Kwak, Thomas J.
Genetic population structure of Shoal Bass within their native range
Endemic to the Apalachicola River basin of the southeastern USA, the Shoal Bass Micropterus cataractae is a fluvial‐specialist sport fish that is imperiled because of anthropogenic habitat alteration. To counter population declines, restorative stocking efforts are becoming an increasingly relevant management strategy. However,...Taylor, Andrew T.; Tringali, Michael D.; Sammons, Steven M.; Ingram, Travis R.; O'Rouke, Patrick M.; Peterson, Douglas L.; Long, James M.
Groundwater flux estimation in streams: A thermal equilibrium approach
Stream and groundwater interactions play an essential role in regulating flow, temperature, and water quality for stream ecosystems. Temperature gradients have been used to quantify vertical water movement in the streambed since the 1960s, but advancements in thermal methods are still possible. Seepage runs are a method commonly used to quantify...Zhou, Yan; Fox, Garey A.; Miller, Ron B.; Mollenhauer, Robert; Brewer, Shannon K.