How industrial dredging is good for Florida's ecosystem!

florida ecosystem dredgingClay, sand, and silt left behind from industrial dredging are repurposed as marshes and wildlife habitats. Benefits to local wildlife and the environment include the removal of contaminated sediments and their relocation to safe, contained areas, and the improvement of water quality through the restoration of water depth and flow. 

There are notable beneficial improvements from the use of clean maintenance industrial dredgings to enhance mudflat and saltmarsh habitats and to mitigate losses of intertidal land through sea level increase and capital dredging operations.

A few ways industrial dredging is good for Florida’s ecosystem include:

  • Removal of subtidal benthic species and communities. 
  • Short-term increases in the level of suspended sediment can give rise to changes in water quality which can positively affect marine life.
  • After the suspended sediments settle, the result is the smothering of subtidal communities and adjacent intertidal communities, which is used beneficially to raise the level of selected areas to offset sea level rise and erosion.
  • In soft sediment environments recovery of animal communities generally occurs relatively quickly and more rapid recovery of communities has been observed in areas exposed to periodic disturbances, such as maintained channels.
  • In general, recovery times rise in stable gravel and sand habitats dominated by long-lived components with complex biological interactions controlling community structure.

These findings are supported by studies of the Georgia Estuary system, USA, which suggest that industrial maintenance dredging has only a short-term effect on the animal communities of the silt and clay sediments. Although almost complete removal of organisms occurs during dredging, recovery begins within one month, and within two months the communities were reported to be similar to pre-dredge conditions.

What are Dredge Spoils?

Monday, March 4, 2019

Dredging can unearth all kinds of various rock, soil, and shell materials and it's what they call dredge spoils.  These dredge spoils set unconformably on uninterrupted soil and have the potential to form anthropogenic landforms such as lynchets and undulations. Unfortunately, the main dumping spot for dredging spoils is in the middle of the ocean and it can cause a bevy of issues.

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What created the red tide and algae bloom in the first place?

Tuesday, January 8, 2019

Florida is no stranger to weird things happening inside and along the coasts. This time an odd occurrence has raised a lot of concern with those closest to our sunny beaches. Red tide has been in the news frequently as the toxic killer of many types of marine life, their carcasses littering the shores of beaches along the Gulf Coast. 

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