Examination of multiple working hypotheses to address reproductive failure in reintroduced Whooping Cranes
| Autor: | Sarah J. Converse, Anne E. Lacy, Jeb A. Barzen, Peter H. Adler, Andrew P. Gossens, Elmer W. Gray |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
education.field_of_study Hatching Applied ecology Population Captivity Grus (genus) Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences 010601 ecology Fishery Nest Wildlife refuge Animal Science and Zoology education Black fly Ecology Evolution Behavior and Systematics |
| Zdroj: | The Condor. 120:632-649 |
| ISSN: | 1938-5129 0010-5422 |
| DOI: | 10.1650/condor-17-263.1 |
| Popis: | Understanding multiple challenges that restrict conservation success is a central task of applied ecology, especially when resources are limited and actions are expensive, such as with reintroduction programs. Simultaneous consideration of multiple hypotheses can expedite identification of factors that most limit conservation success. Since 2001, reintroduction of a migratory population of Whooping Cranes (Grus americana) has been under way in eastern North America. Hatching success, however, has been extremely low. In our study area, in and near Necedah National Wildlife Refuge in central Wisconsin, USA, we simultaneously tested 3 hypotheses explaining poor hatching success: harassment of incubating birds by black flies (Simuliidae), effects of captivity, and inexperience of breeders. When black flies were experimentally suppressed, hatching probability doubled. Daily nest survival for Whooping Cranes was strongly and negatively related to an index of black fly abundance, particularly of Simuliu... |
| Databáze: | OpenAIRE |
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