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Design, evaluation, and applications...

Pearse, Aaron Todd.

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Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi./
Author:	Pearse, Aaron Todd.
Description:	185 p.
Notes:	Advisers: Richard M. Kaminski; Stephen J. Dinsmore.
Contained By:	Dissertation Abstracts International68-03B.
Subject:	Agriculture, Forestry and Wildlife. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3256011

Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi.
Pearse, Aaron Todd.

Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi. - 185 p.

Advisers: Richard M. Kaminski; Stephen J. Dinsmore.

Thesis (Ph.D.)--Mississippi State University, 2007.

Estimates of abundance are critical to manage and conserve waterfowl and their habitats. Most surveys of wintering waterfowl do not use probability sampling; therefore, development of more rigorous methods is needed. In response, I designed and evaluated an aerial transect survey to estimate abundance of wintering ducks in western Mississippi during winters 2002-2004.Subjects--Topical Terms:

783690
Agriculture, Forestry and Wildlife.

Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi.
LDR:03557nam 2200325 a 45 001 974229
005 20110929
008 110929s2007 eng d
035 $a (UMI)AAI3256011
035 $a AAI3256011
040 $a UMI $c UMI
100 1 $a Pearse, Aaron Todd. $3 1298172
245 1 0 $a Design, evaluation, and applications of an aerial survey to estimate abundance of wintering waterfowl in Mississippi.
300 $a 185 p.
500 $a Advisers: Richard M. Kaminski; Stephen J. Dinsmore.
500 $a Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1375.
502 $a Thesis (Ph.D.)--Mississippi State University, 2007.
520 $a Estimates of abundance are critical to manage and conserve waterfowl and their habitats. Most surveys of wintering waterfowl do not use probability sampling; therefore, development of more rigorous methods is needed. In response, I designed and evaluated an aerial transect survey to estimate abundance of wintering ducks in western Mississippi during winters 2002-2004.
520 $a I designed a probability-based survey using stratified random and unequal probability sampling of fixed-width transects. To correct for visibility bias inherent in aerial surveys, I conducted an experiment to model bias and incorporated correction factors into estimation procedures to produce adjusted estimates.
520 $a Bias-corrected estimates were most accurate. Precision of abundance estimates of total ducks met a priori goals (CV ≤ 15%) in 10 of 14 surveys. Based on a simulation study, the implemented survey design provided the most precise estimates, yet certain refinements remained possible.
520 $a I also illustrated potential applications of survey results in the context of conservation and management of wintering waterfowl populations and habitats. I described patterns of abundance within and among winters, including a comparison with surveys conducted during winters 1988-1990 that revealed mallard abundance decreased 65% from the late 1980s. I developed a method to illustrate population abundance spatially for scientific and public education. I attempted to explain temporal variation in abundance estimates relative to variables potentially representing hypotheses explaining regional distributions of ducks. I concluded the data provided stronger support for factors related to energy conservation by ducks than factors related to energy acquisition. Finally, I determined associations between duck distributions and habitat and landscape features in accordance with the habitat-complex conceptual model. Landscapes with greater interspersion and diversity of wetlands attracted increased numbers of ducks, although other factors such as wetland area also were important.
520 $a I concluded that this study advanced methodologies to survey wintering waterfowl. Although improvements were warranted, I recommend this survey design for continued monitoring of wintering ducks in western Mississippi. Furthermore, I suggest habitat management on public and private lands should include complexes of seasonally flooded cropland, moist-soil, forested, and permanent wetlands to potentially increase wintering duck numbers in western Mississippi.
590 $a School code: 0132.
650 4 $a Agriculture, Forestry and Wildlife. $3 783690
650 4 $a Environmental Sciences. $3 676987
690 $a 0478
690 $a 0768
710 2 0 $a Mississippi State University. $3 1017550
773 0 $t Dissertation Abstracts International $g 68-03B.
790 $a 0132
790 1 0 $a Dinsmore, Stephen J., $e advisor
790 1 0 $a Kaminski, Richard M., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3256011