EFFECT OF SUPPLEMENTAL COVER ON SURVIVAL OF SNOWSHOE HARES AND COTTONTAIL RABBITS IN PATCHY HABITAT

Citation
Ew. Cox et al., EFFECT OF SUPPLEMENTAL COVER ON SURVIVAL OF SNOWSHOE HARES AND COTTONTAIL RABBITS IN PATCHY HABITAT, Canadian journal of zoology, 75(9), 1997, pp. 1357-1363
Citations number
41
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Zoology
Journal title
ISSN journal
0008-4301
Volume
75
Issue
9
Year of publication
1997
Pages
1357 - 1363
Database
ISI
SICI code
0008-4301(1997)75:9<1357:EOSCOS>2.0.ZU;2-S
Abstract
We examined mortality patterns of sympatric snowshoe hares (Lepus amer icanus) and cottontail rabbits (Sylvilagus floridanus) on sites with a nd without brush piles to evaluate the protective role of cover in the fragmented habitat typical at the range limits of both species. Treat ment sites received greater than or equal to 2 oak brush piles per hec tare in August and September 1994. Leporids used a minimum of 56% of c reated brush piles, but we failed to detect a difference in survivorsh ip between animals occupying treatment and control sites, suggesting t hat brush plies may not have served as effective refugia to leporids o f either species. Coyotes (Canis latrans) killed leporids in understor y cover similar in mean density to that of study sites, whereas raptor kills occurred in areas with sparser understory than the average for the study sites or at coyote kills. We concluded that other methods of habitat alteration may be more effective means of increasing numbers of snowshoe hares and cottontail rabbits.