Rangeland Ecology & Management

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Feral horse seasonal habitat use on a coastal barrier spit
Author
Rheinhardt, Richard D.
Rheinhardt, Martha Craig
Publisher
Society for Range Management
Publication Year
2004-05-01
Body

Management of feral horses grazing on Atlantic and Gulf coast barrier islands requires information on seasonal habitat preferences and distribution of important forage species to maintain stable populations and prevent destruction of fragile island ecosystems, particularly as coastal development further restricts free range. Counts from seasonal aerial surveys of Currituck Banks, N.C. were used to determine whether particular habitats were used more or less than would be expected by chance. On-ground observations were used to determine the relative intensity of grazing on vegetation by habitat and season. Feral horses showed seasonal preferences for particular forage species and habitat types. Horses grazed upon at least 16 graminoid and 5 forb species across 6 identified habitat types covering 4,619 ha. In late winter, Maritime Forest was used significantly more than expected while Tidal Freshwater Marsh was used less than expected. In spring, all habitats were used in the proportion expected based on availability. In early summer, Wet Grassland was preferentially used while Dry Grassland was preferentially avoided. The relative degree of exposure from wind may explain why horses spent less time than expected in exposed marshes during winter and more time than expected in forest. The availability of fresh water and hydrophytes may explain why horses spent more time than expected in Wet Grassland in summer and less time than expected in Dry Grassland. Seasonal habitat preferences should be considered when managing for ecosystem sustainability of feral horses on barrier islands. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2111/1551-5028(2004)057[0253:FHSHUO]2.0.CO;2
Additional Information
Rheinhardt, R. D., & Rheinhardt, M. C. (2004). Feral horse seasonal habitat use on a coastal barrier spit. Journal of Range Management, 57(3), 253-258.
IISN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/643533
Journal Volume
57
Journal Number
3
Journal Pages
253-258
Journal Name
Journal of Range Management
Keywords
barrier island
forage
grazing
North Carolina
preferential habitat utilization
seasonal utilization