Identification and synthetic modeling of factors affecting American black duck populations
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| Format: | Buch |
| Sprache: | English |
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Bethesda, Md.
Wildlife Soc.
2002
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| Schriftenreihe: | Wildlife monographs
150 |
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| 245 | 1 | 0 | |a Identification and synthetic modeling of factors affecting American black duck populations |c by Michael J. Conroy, Mark W. Miller, and James E. Hines |
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Datensatz im Suchindex
| _version_ | 1819622117216354304 |
|---|---|
| adam_text | Titel: Identification and synthetic modeling of factors affecting American black duck populations
Autor: Conroy, Michael J.
Jahr: 2002
Contents
INTRODUCTION........................................................3
Acknowledgments...................................................3
EVIDENCE FOR THE BLACK DUCK DECLINE .......3
REVIEW OF POPULATION FACTORS .....................7
Breeding Ground Habitat........................................8
Breeding Habitats and Habitat Selection...................8
Habitat Quantity ....................................................9
Beaver Populations ..............................................10
Acidic Precipitation..............................................10
Summary of breeding ground habitat factors ..........11
Wintering Ground Habitat.....................................11
General Habitat Features .....................................11
Food ...................................................................11
Habitat Quantity .................................................11
Habitat Quality....................................................12
Environmental Contaminants ................................12
Winter Climate and Body Condition ......................13
Summary of wintering habitat factors ....................13
Harvest .................................................................14
Summary of harvest factors...................................14
Interactions with Mallards .....................................15
The Mallard Increase ...........................................15
Hybridization ......................................................15
Competition .........................................................16
Type I Evidence of Competition .............................16
Type II Evidence of Competition ............................17
Type III Evidence .................................................17
Summary of mallard effects ...................................17
Parasites and Disease..........................................17
Summary of Effects of Disease ..............................18
Conclusions from the Literature Review...............18
SYNTHETIC POPULATION MODEL FOR
AMERICAN BLACK DUCKS....................................19
Introduction ...........................................................19
Model Formulation ................................................19
Reproduction Submodel ........................................20
Survival Submodel................................................20
Relation of Model Parameters to Population Factors..^
PARAMETER ESTIMATION AND MODEL
EVALUATION ...........................................................22
Philosophy and General Approach.......................22
Methods................................................................23
Breeding Period ...................................................23
Harvest/Winter Period ..........................................26
Model Synthesis ...................................................29
Model Calibration and Prediction .........................31
Dynamic Behavior of Models ................................32
Sensitivity Analysis ...............................................32
RESULTS.................................................................33
Reproduction Submodel .......................................33
Survival Submodel................................................34
Model Calibration and Prediction..........................36
Dynamic Behavior of Models................................38
Sensitivity Analysis ...............................................38
DISCUSSION ..........................................................45
SUMMARY ...............................................................46
DEVELOPMENT OF AN ADAPTIVE MANAGEMENT
PROTOCOL FOR AMERICAN BLACK DUCKS .......47
Objective Function ................................................47
Decision Alternatives ............................................48
Definition of State Space......................................49
Alternative Models and Model Updating...............49
Other Data Needs.................................................52
GENERAL CONCLUSIONS AND
RECOMMENDATIONS ............................................52
LITERATURE CITED ...............................................53
APPENDICES...........................................................59
|
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| id | DE-604.BV016518212 |
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| indexdate | 2024-12-23T16:09:49Z |
| institution | BVB |
| language | English |
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| physical | 64 S. Ill., graph. Darst. Author index 144 - 150 |
| publishDate | 2002 |
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| publishDateSort | 2002 |
| publisher | Wildlife Soc. |
| record_format | marc |
| series | Wildlife monographs |
| series2 | Wildlife monographs |
| spellingShingle | Conroy, Michael J. Miller, Mark W. Hines, James E. Identification and synthetic modeling of factors affecting American black duck populations Wildlife monographs Eenden gtt Mathematisches Modell Ökologie Animals, Wild Bird populations Canada Mathematical models Bird populations United States Mathematical models Black duck Ecology Canada Mathematical models Black duck Ecology United States Mathematical models Ducks Populationsdynamik (DE-588)4046803-3 gnd Dunkelente (DE-588)4730042-5 gnd |
| subject_GND | (DE-588)4046803-3 (DE-588)4730042-5 (DE-588)4078704-7 |
| title | Identification and synthetic modeling of factors affecting American black duck populations |
| title_auth | Identification and synthetic modeling of factors affecting American black duck populations |
| title_exact_search | Identification and synthetic modeling of factors affecting American black duck populations |
| title_full | Identification and synthetic modeling of factors affecting American black duck populations by Michael J. Conroy, Mark W. Miller, and James E. Hines |
| title_fullStr | Identification and synthetic modeling of factors affecting American black duck populations by Michael J. Conroy, Mark W. Miller, and James E. Hines |
| title_full_unstemmed | Identification and synthetic modeling of factors affecting American black duck populations by Michael J. Conroy, Mark W. Miller, and James E. Hines |
| title_short | Identification and synthetic modeling of factors affecting American black duck populations |
| title_sort | identification and synthetic modeling of factors affecting american black duck populations |
| topic | Eenden gtt Mathematisches Modell Ökologie Animals, Wild Bird populations Canada Mathematical models Bird populations United States Mathematical models Black duck Ecology Canada Mathematical models Black duck Ecology United States Mathematical models Ducks Populationsdynamik (DE-588)4046803-3 gnd Dunkelente (DE-588)4730042-5 gnd |
| topic_facet | Eenden Mathematisches Modell Ökologie Animals, Wild Bird populations Canada Mathematical models Bird populations United States Mathematical models Black duck Ecology Canada Mathematical models Black duck Ecology United States Mathematical models Ducks Populationsdynamik Dunkelente Kanada USA |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010207820&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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