Abstract
The distribution of wetland plant species was described along a standing crop and litter gradient at Wilsons Lake, a nationally significant wetland habitat in Nova Scotia, Canada. Disjunct populations of rare and endangered Atlantic coastal plain species were found to contribute most to total standing crop when biomass was low. A similar distribution for isoetids, a group of stress-tolerant shoreline plants, indicates that low biomass areas are also infertile. The rarity of the coastal plain flora seems to be related to the lack of low biomass/infertile shorelines within the flora's geographical range. Conservation of the flora therefore involves preserving the remaining habitat and maintaining the current processes of flooding, wave wash, and ice scour that are maintaining infertility.
Published Version
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