Study

Rehabilitation of impounded estuarine wetlands by hydrologic reconnection to the Indian River Lagoon, Florida (USA)

  • Published source details Brockmeyer R.E., Rey J.R., Virnstein R.W., Gilmore R.G. & Earnest L. (1996) Rehabilitation of impounded estuarine wetlands by hydrologic reconnection to the Indian River Lagoon, Florida (USA). Wetlands Ecology and Management, 4, 93-109

Actions

This study is summarised as evidence for the following.

Action Category

Facilitate tidal exchange to restore degraded brackish/salt marshes

Action Link
Marsh and Swamp Conservation

Use prescribed fire to maintain or restore disturbance: brackish/salt marshes

Action Link
Marsh and Swamp Conservation
  1. Facilitate tidal exchange to restore degraded brackish/salt marshes

    A before-and-after study in 1993–1996 of a coastal marsh in Florida, USA (Brockmeyer et al. 1996) found that following restoration of tidal exchange and prescribed burning, species richness and cover of salt-tolerant vegetation increased, whilst species richness and cover of freshwater vegetation decreased. Within three years of tidal restoration, the number of salt-tolerant plant species in the marsh increased from seven to eight. Cover of salt-tolerant vegetation significantly increased (by 1,056%). The number of freshwater plant species decreased from thirteen to one. Cover of freshwater vegetation significantly decreased (by 74%). There was a non-significant 56% decline in southern cattail Typha domingensis cover. Methods: In 1993, thirteen culverts were built to restore tidal exchange to a degraded, impounded, cattail-invaded marsh. In February 1995, the marsh was burned. The study does not distinguish between the effects of these interventions. Vegetation was surveyed along fifteen 15-m transects in October 1993 (before culverts were built) and March 1996.

    (Summarised by: Nigel Taylor)

  2. Use prescribed fire to maintain or restore disturbance: brackish/salt marshes

    A before-and-after study in 1993–1996 of a coastal marsh in Florida, USA (Brockmeyer et al. 1996) found that following a prescribed burn along with restoration of tidal exchange, species richness and cover of salt-tolerant vegetation increased, whilst species richness and cover of freshwater vegetation decreased. Within three years of tidal restoration, the number of salt-tolerant plant species in the marsh increased from seven to eight. Cover of salt-tolerant vegetation significantly increased (by 1,056%). The number of freshwater plant species decreased from thirteen to one. Cover of freshwater vegetation significantly decreased (by 74%). There was a non-significant 56% decline in southern cattail Typha domingensis cover. Methods: In 1993, thirteen culverts were built to restore tidal exchange to a degraded, impounded, cattail-invaded marsh. In February 1995, the marsh was burned. The study does not distinguish between the effects of these interventions. Vegetation was surveyed along fifteen 15-m transects in October 1993 (before culverts were built) and March 1996.

    (Summarised by: Nigel Taylor)

Output references

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