| Institution: | 1. Department of Wildlife, Fisheries and Aquaculture, Box 9690, Mississippi State University, Mississippi State, MS 39762, USA;2. Department of Wildlife, Fisheries and Aquaculture, Box 9690, Mississippi State University, Mississippi State, MS 39762, USA
8591 Orchard Road, Unit 3, Pinckney, MI 48169, USA;3. Department of Forestry, Box 9681, Mississippi State University, Mississippi State, MS 39762, USA;4. United States Department of Agriculture, Forest Service, Center for Bottomland Hardwoods Research, P.O. Box 227, Stoneville, MS 38776, USA |
| Abstract: | ABSTRACT 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. |
