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West Ashley Library
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Folly Beach Library
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Edgar Allan Poe/Sullivan's Island Library
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Wando Mount Pleasant Library
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Village Library
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John's Island Library
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Survival and harvest of ruffed grouse in central Maine, USA
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- Author(s): Davis, Samantha R. B.; Mangelinckx, Joelle; Allen, R. Bradford; Sullivan, Kelsey; Blomberg, Erik J.
- Source:
Journal of Wildlife Management; August 2018, Vol. 82 Issue: 6 p1263-1272, 10p - Source:
- Additional Information
- Abstract: Understanding population dynamics is central to population management, particularly for game species that experience human harvest and non‐harvest mortality. Ruffed grouse (Bonasa umbellus) are a widely distributed and common game species in North America that have experienced population declines along their southern range margins, including portions of New England, primarily in response to forest succession and habitat loss. In the state of Maine, ruffed grouse are generally considered abundant, but there is a lack of state‐specific knowledge of ruffed grouse survival and harvest rates to inform harvest management. We estimated seasonal and annual survival rates, harvest rates, and documented cause‐specific mortality of 248 radio‐marked ruffed grouse at 2 study areas in central Maine from 2014 to 2016. We used Program MARK to evaluate sources of spatial, temporal, and individual variation that may affect ruffed grouse survival and harvest. Survival was lowest during October and during winter, and adult ruffed grouse had a higher survival probability than juveniles throughout the year with mean annual survival probabilities of 0.28 ± 0.01 (SE) and 0.13 ± 0.003, respectively. Harvest rates were greater in a state‐owned Wildlife Management Area and were lower within commercially managed private forest that was open to public hunting. Harvest results suggest harvest (H) was greatest at the beginning of the hunting season (Oct; Frye Mountain HOct= 0.14 ± 0.02; Stud Mill HOct= 0.07 ± 0.02), and was lower later in the season (Nov and Dec; Frye Mountain HNov‐Dec= 0.07 ± 0.02; Stud Mill HNov‐Dec= 0.03 ± 0.01). Pooled across all years and study areas, the ruffed grouse harvest rate was 0.16 (95% CI = 0.14–0.18). Our results are comparable to other range‐wide studies and suggest that current hunting regulations for ruffed grouse in Maine are consistent with sustainable population management. © 2018 The Wildlife Society. During our 3‐year study, patterns in survival of ruffed grouse in Maine appeared to be like other populations, especially those within the eastern portion of the species’ range. Our results suggest that late‐season harvest is not excessive, and current hunting regulations resulted in rates of harvest that fell within the range of values reported in other studies.
- Abstract:
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