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Sweep‐Net Sampling Acorns in Forested Wetlands
Author(s) -
Weegman Mitch D.,
Kaminski Richard M.,
Wang Guiming,
Schummer Michael L.,
Ezell Andrew W.,
Leininger Theodor D.
Publication year - 2010
Publication title -
the journal of wildlife management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.94
H-Index - 111
eISSN - 1937-2817
pISSN - 0022-541X
DOI - 10.2193/2009-496
Subject(s) - acorn , forestry , environmental science , hardwood , wildlife refuge , wildlife , ecology , biology , geography
We 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 ± 7.0% (SE, n = 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.