Connecting the dots: an invariant migration corridor links the Holocene to the present.

Connecting the dots: an invariant migration corridor links the Holocene to the present. Research Abstract Details 

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Connecting the dots: an invariant migration corridor links the Holocene to the present. Abstract Text:

Joel Berger,Steven L Cain,Kim Murray Berger,

Numerous species undergo impressive movements, but due to massive changes in land use, long distance migration in terrestrial vertebrates has become a highly fragile ecological phenomenon. Uncertainty about the locations of past migrations and the importance of current corridors hampers conservation planning. Using archeological data from historic kill sites and modern methods to track migration, we document an invariant, 150 km (one-way) migration corridor used for at least 6000 years by North America's sole extant endemic ungulate. Pronghorn (Antilocapra americana) from the Greater Yellowstone Ecosystem, like other long distant migrants including Serengeti wildebeest (Connochaetes taurinus) and Arctic caribou (Rangifer tarandus), move nearly 50 km d-1, but in contrast to these other species, rely on an invariant corridor averaging only 2 km wide. Because an entire population accesses a national park (Grand Teton) by passage through bottlenecks as narrow as 121 m, any blockage to movement will result in extirpation. Based on animation of real data coupled with the loss of six historic routes, alternative pathways throughout the 60,000 km2 Yellowstone ecosystem are no longer available. Our findings have implications for developing strategies to protect long distance land migrations in Africa, Asia and North America and to prevent the disappearance of ecological phenomena that have operated for millennia.

Connecting the dots: an invariant migration corridor links the Holocene to the present. Publishing Authors By Initials

J Berger,SL Cain,KM Berger,

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Connecting the dots: an invariant migration corridor links the Holocene to the present. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Biology letters

VOLUME: 2

Page Numbers: 528-31

Journal Abbreviation: Biol. Lett.

ISSN: 1744-9561

DAY: 22

MONTH: Dec

YEAR: 2006

Connecting the dots: an invariant migration corridor links the Holocene to the present. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Connecting the dots: an invariant migration corridor links the Holocene to the present.

AFFILIATION: Teton Field Office, Wildlife Conservation Society, PO Box 985, Teton Valley, ID 83455, USA. jberger@wcs.org

Country: England

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MEDLINETA: Biol Lett

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