scholarly journals Population dynamics: The foundation of wildlife damage management for the 21st century

1998 ◽  
Vol 18 ◽  
Author(s):  
Richard, A. Dolbeer
Keyword(s):  
Population Dynamics ◽  
21St Century ◽  
Wildlife Damage Management ◽  
Wildlife Damage

Paddlefish Management, Propagation, and Conservation in the 21st Century

2009 ◽  
Keyword(s):  
Growth Rate ◽  
Population Dynamics ◽  
Mortality Rate ◽  
Population Density ◽  
21St Century ◽  
High Growth ◽  
High Growth Rate ◽  
Demographic Groups ◽  
Annual Mortality ◽  
Remnant Population

<em>Abstract</em>.—Paddlefish <em>Polyodon spathula </em>vanished from areas of the upper Tombigbee River basin in Mississippi and Alabama during the 1950s, long before channelization and damming associated with construction of the Tennessee-Tombigbee Waterway (TTW) were completed in 1984. This study was undertaken to assess distribution and population dynamics of any remaining stock. Paddlefish were not captured in upstream impoundments, but an unexploited remnant population was located in the downstream impoundment: Demopolis Lake, Alabama. Paddlefish in Demopolis Lake were characterized by a population density of 2.6 fish/ha, high growth rate relative to more northern populations, and natural annual mortality rate (<em>A </em>= 0.406) similar to other southern populations. Two wintering habitats (cutoff bendways) were heavily utilized by paddlefish. Large males primarily inhabited the more lotic bendway while females and small males were more common in the more lentic bendway, indicating differential importance of habitats among demographic groups. The restricted distribution of TTW paddlefish and demographic differences between habitats suggest that areas heavily utilized by paddlefish should be protected from further degradation. Sedimentation has resulted in reductions of bendway depth and reduced connectivity of backwaters, reducing availability of suitable paddlefish habitat. Restoring connectivity of bendways through dredging could reverse this trend and provide other benefits to fisheries.

APPLICATION OF DISTRIBUTED PARAMETER CONTROL MODEL IN WILDLIFE DAMAGE MANAGEMENT

1992 ◽  
Vol 02 (04) ◽  
pp. 423-439 ◽  
Author(s):  
SUZANNE M. LENHART ◽  
MAHADEV G. BHAT
Keyword(s):  
Temporal Dynamics ◽  
Real Life ◽  
Optimal Solution ◽  
Distributed Parameter ◽  
Parameter Control ◽  
Wildlife Damage Management ◽  
Distributed Parameter Control ◽  
Time Problem ◽  
Wildlife Damage ◽  
Spatio Temporal

A bioeconomic model for optimal control of wildlife damage by migratory small mammal populations is developed under the framework of a nonlinear distributed parameter control problem. The model first simulates the spatio-temporal dynamics of dispersal population by parabolic diffusive Volterra-Lotka partial differential equation and then optimizes a criterion function of present value combined costs of wildlife damage and harvesting. The existence of a unique optimal solution for a finite time problem is proved. An iterative procedure for numerical solution of the Optimality System with parabolic equations of opposite orientations is developed. The theoretical model is applied to a real life problem using biological and economic data for beaver populations under certain simplistic assumptions.

scholarly journals Internet Center for Wildlife Damage Management 2004-2013

2014 ◽  
Vol 26 ◽  
Author(s):  
Stephen , M. Vantassel ◽  
Scott , E. Hygnstrom ◽  
Paul , D. Curtis ◽  
Raj Smith
Keyword(s):  
Wildlife Damage Management ◽  
Wildlife Damage

scholarly journals Innovative Solutions to Human-Wildlife Conflicts: National Wildlife Research Center Accomplishments, 2006

2007 ◽  
Author(s):  
Keyword(s):  
United States ◽  
Scientific Information ◽  
The United States ◽  
Research Center ◽  
Wildlife Damage Management ◽  
Innovative Solutions ◽  
Wildlife Damage ◽  
Information And Communication ◽  
Strategic Program

The National Wildlife Research Center (NWRC) functions as the research arm of Wildlife Services (WS) by providing scientific information on the development of socially acceptable methods for wildlife damage management. NWRC has identified four strategic program goals: (1) developing methods, (2) providing wildlife services, (3) valuing and investing in people, and (4) enhancing information and communication. WS is dedicated to helping meet the wildlife damage management needs of the United States by building on NWRC's strengths in these four key areas. This annual research highlights report is structured around these programs goals.

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