Declining Diversity in Natural and Restored Salt Marshes: A 30-Year Study of Tijuana Estuary

Zedler, J.B. and J.M. West

Publication Date:

In a 2000 restoration site, planting mortality was high for five species, but Sv recruited voluntarily and dominated by 2005. We attribute recent vegetation changes to frequent catastrophic storms, flooding, and sedimentation, which contrasted strongly with the benign conditions of decades prior to 1974. Sediment blocked tidal channels in 1984 and gradually elevated the marsh plain, degrading the diverse salt marsh and hindering efforts to restore it. Future restoration efforts will require even greater control over sediment inflows plus contouring sites to include natural topographic features that appear critical to sustaining high species richness and evenness.

Resource Type:
Peer-reviewed Article

Restoration Ecology