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- Title
Impacts of Nitrogen and Sediment on Restored Wetland Plant Assemblages from an Agricultural Landscape.
- Authors
Shoemaker, Cory M.; Wallace, Lisa E.; Brooks, Christopher P.; DiOrio, Evelyn W.; Ervin, Gary N.
- Abstract
The ability to predict the impact of abiotic stressors on plant assemblage characteristics during habitat restoration is critical in the success of targeted restoration efforts. In an effort to determine wetland plant responses to common agricultural stressors, we seeded 75 mesocosms with soil collected from three restored wetlands in the Mississippi River Alluvial Valley. These mesocosms were subjected to four different combinations of nitrogen and sediment addition and monitored for two growing seasons. Resulting assemblages showed strong effects from site of origin with weaker effects of imposed treatments on assemblage composition. In contrast to species composition, summary metrics of assemblage quality (e.g., richness and diversity) were negatively affected by increased nitrogen and sediment levels, vs. controls. Over time, assemblage phylogenetic relatedness became more clustered, indicating the importance of abiotic filtering on wetland plant assemblages in agricultural landscapes. Our results indicate that agriculturally derived stressors can exert a filtering effect on plant assemblages, impact their perceived quality, and lessen the importance of soil site of origin in restored wetlands in agricultural landscapes.
- Publication
Wetlands, 2022, Vol 42, Issue 7, p1
- ISSN
0277-5212
- Publication type
Article
- DOI
10.1007/s13157-022-01619-6