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Sweep-net sampling acorns in forested wetlandsAuthor(s): Mitch D. Weegman; Richard M. Kaminski; Guiming Wang; Michael L. Schummer; Andrew W. Ezell; Theodor D. Leininger
Source: Journal of Wildlife Management 74(8):1931-1933
Publication Series: Scientific Journal (JRNL)
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DescriptionWe are unaware of any previous studies to evaluate using a sweep net to estimate abundance of red oak acorns (Quercus spp.) after they fall from tree crowns, sink to the ground in flooded bottomlands (i.e., sound acorns), and become potential food for animals or propagules for seedlings. We placed known numbers of white-painted red oak acorns of 3 size classes and used a sweep net to recover them in a flooded hardwood bottomland in Noxubee National Wildlife Refuge, Mississippi, USA. We recovered large acorns 1.96 and 1.32 times more often than small and medium acorns, respectively. Mean recovery rate of all marked acorns across size and density classes was 34.0 6 7.0% (SE, n 5 9). Thus, sweep-net sampling for sound acorns in flooded oak bottomlands may yield negatively biased estimates of acorn abundance, and investigators should consider using correction factors.
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CitationWeegman, Mitch D.; Kaminski, Richard M.; Wang, Guiming; Schummer, Michael L.; Ezell, Andrew W.; Leininger, Theodor D. 2010. Sweep-net sampling acorns in forested wetlands. Journal of Wildlife Management 74(8):1931-1933.
Keywordsacorns, bottomland hardwoods, estimation, oak, Quercus, recovery rate, red oak, sweep net, waterfowl
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