论文信息 - The effect of tidal exclusion on salt marsh vegetation in Baja California, México

The effect of tidal exclusion on salt marsh vegetation in Baja California, México

Changes in salt marsh vegetation were analyzed over a two-year period (November 1984–November 1986) following the construction of a dike in the southwest corner of Punta Banda Estuary, Baja California, México. Changes included: increased interstitial soil salinity, reduced soil moisture, increased mortality of Spartina foliosa and decreased middle marsh species diversity due to the elimination of annual and short-lived species. The sea-side edge of the middle marsh shifted its boundary to a lower elevation. By the end of 1986, dominant species were Salicornia virginica, Batis maritima and Frankenia grandifolia. By October 1988, only a few patches of S. foliosa persisted at the water edge, and it appeared that the community was not yet stable. The potential future of the estuary is evaluated.

Silvia E. Ibarra-Obando | Miriam Poumian-Tapia

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