Kansas State University
205 Leasure Hall
Manhattan, KS 66506-3501
Phone: (785)532-6070
Fax: (785)532-7159
kscfwru@ksu.edu

Homepage

About the Unit
Cooperators
Mission Statement
History
Unit News
Courses
Publications

Facilities

People
Faculty and Staff
Graduate Students

Research
Current Projects
Completed Projects
Technical Assistance

Resources and Employment
Graduate School
Graduate Applications

Forms and Manuals
Assistantships and Positions
Careers

Movements, Habitat Use, Survival, and potential implications of Climate Change on Mottled Ducks (Anas fulvigula)
in the Texas Chenier Plain Region


Investigators:
Jena Moon, Ph.D. Student, Stephen F. Austin State University

Project Supervisors:
Dr. David Haukos
Dr. Warren Conway

Funding:
Migratory Bird Office, Region 2, U.S. Fish and Wildlife Service
National Wildlife Refuges, Region 2, U.S. Fish and Wildlife Service

Cooperators:
Patrick Walther
Dr. Dan Collins


Jena Moon holding a female mottled duck outfitted with a satellite transmitter.

Location: Chenier Plain of the upper Texas and western Louisiana Gulf Coast

Completion: May 2014

Status:
Completed

Objectives:
(1) Determine movements of adult female mottled ducks during all major life stages, climatic events, high disturbance periods, and landscape habitat changes.
(2) Document course and fine scale habitat use during all major life stages.
(3) Model survival rates in relation to breeding periods, hunt periods, molting periods, and climatic events.
(4) Determine home range size for adult female mottled ducks.

Progress and Results:

The mottled duck is a species of waterfowl that is increasingly less common along the Gulf Coast. Population levels of this species are currently below goal numbers established by the Gulf Coast Joint Venture. As a focal species for Strategic Habitat Conservation, the mottled duck has been established as an indicator species to coastal marsh health and function. Currently, biologists have a relatively poor understanding of mottled duck habitat use, regional movements, response to habitat management, and movements between Refuge lands, State Wildlife Management Areas, and private lands. Habitat quality/quantity and disturbance maybe important factors dictating mottled duck movements both spatially and temporally. We have attached 18-gram solar PTT radios (satellite radios) to 15 mottled duck hens in the summer of 2009, and 30 in 2010, and 45 in 2011. The PTT radios are needed to document movements, in particular when hens depart Federal property along the Texas Gulf Coast. Other objectives of the monitoring effort will include documenting coarse and fine scale habitat use (i.e., aerial classified into habitat coverage's using ERDAS), documenting seasonal movements of mottled ducks, and examining variability of responses in relation to climatic events, landscape habitat conditions (i.e., wetland availability assessed by utilizing Landsat data), and disturbance. We will also be examining potential impacts of climate change, though assessing home range level habitat changes from current conditions to projected conditions in 2050 and 2100 by the Sea Level Affecting Marshes Model (SLAMM). This information is important to resource managers along the upper Texas Coast and across the mottled duck range. It is needed to refine and improve habitat management practices (e.g., burning, grazing, hydrology manipulation, herbicide applications, mechanical treatments, etc.) to allow for adaptive management across the mottled duck's range.

Products:
Haukos, D.A., J. Moon, and W. Conway. 2013. Survival of Mottled Ducks in the Texas Chenier Plain Region. 6th North American Duck Symposium, Memphis, Tennessee.

Moon, J.A., D.A. Haukos, W. Conway, and P. Walther. 2013. Movements of mottled ducks in the Texas Chenier Plain Region. 6th North American Duck Symposium, Memphis, Tennessee.

Moon, J.A., D.A. Haukos, W. Conway, and P. Walther.. 2013. Habitat selection of mottled ducks in the Texas Chenier Plain. 6th North American Duck Symposium, Memphis, Tennessee.

Moon, J.A., D.A. Haukos, W. Conway, and P. Walther. 2013. Potential implications of climate change on the mottled duck. 6th North American Duck Symposium, Memphis, Tennessee. Poster

Moon, J., D.A. Haukos, W. Conway, and P. Walther. 2011. Habitat use and movements of adult mottled ducks on the Texas Chenier Plain. Annual Meeting of The Texas Chapter of The Wildlife Society, San Antonio, Texas.

Moon, J.A., D.A. Haukos, and W. Conway. 2012. Potential climate change impacts to mottled ducks on the Chenier Plain Region of Texas. Texas Chapter of The Wildlife Society, Fort Worth, Texas.