Experimental Reintroduction of Beach Pea (Lathyrus japonicus) to the Indiana Dunes National Lakeshore

摘要: Reintroduction of plants has become an increasingly important restoration tool as more natural landscapes are impacted by urban development. Beach pea ( Lathyrus japonicus ) is early successional plant growing in foredunes throughout the Great Lakes, U.S.A. This species sensitive to trampling and recreational use currently endangered Indiana. We reintroduced 350 into seven reintroduction sites (50 plants/site) three locations at Indiana Dunes National Lakeshore (INDU) 2008. Experimental design each site comprised ten, 1 m2 quadrats grouped five blocks, with block consisting a quadrat without supplemental watering times/week. transplanted quadrat. To decrease transplant mortality from sand burial, we installed barriers windward transect. By end October, 56 (16%) survived. used logistic regression backwards stepwise elimination analyze effects predictor variables (watering treatment, percent open canopy, distance lake, foredune/blowout, stem length, precipitation) on probability survival. Supplemental watering, closer proximity longer length were associated higher rates Quadrats had soil water than non-watered quadrats, decreased accretion near transplants. recommend initiating future reintroductions mature transplants lower blowouts. Blowouts can also act refuges stochastic events such high lake or ocean levels related climate change.