Summary: 521
Ecological Applications, 15(2), 2005, pp. 521­531
2005 by the Ecological Society of America
VIABILITY OF BELL'S SAGE SPARROW (AMPHISPIZA BELLI SSP. BELLI):
ALTERED FIRE REGIMES
H. RES¸ IT AKC¸ AKAYA,1,5
JANET FRANKLIN,2
ALEXANDRA D. SYPHARD,3
AND JOHN R. STEPHENSON4
1
Applied Biomathematics, 100 North Country Road, Setauket, New York 11733 USA
2Department of Biology, San Diego State University, San Diego, California 92182-4614 USA
3Department of Geography, San Diego State University, San Diego, California 92182-4493 USA
4U.S. Fish and Wildlife Service, 20310 Empire Ave., Bend, Oregon 97701 USA
Abstract. We modeled the viability of a Bell's Sage Sparrow (Amphispiza belli ssp.
belli) metapopulation under different fire regimes in the foothills and mountains of San
Diego County, California, USA. The approach integrates a landscape model, which predicts
the vegetation composition and age under three fire regimes, a habitat model, which in-
terprets the resulting landscape in terms of its suitability for the Sage Sparrow, and a
metapopulation model, which predicts the viability of the species based on a dynamic

Source: Akçakaya, H. Resit - Department of Ecology and Evolution, SUNY at Stony Brook

Collections: Biology and Medicine; Environmental Sciences and Ecology