Home Archived October 29, 2018
(i)

South Florida Information Access (SOFIA)


geer > 2000 > poster > synthesis on the impact of 20th century water-management and land-use practices on the coastal hydrology of southeastern florida > impact on the marine ecosystem

Synthesis On The Impact of 20th Century Water-Management And Land-Use Practices On The Coastal Hydrology Of Southeastern Florida

[ Disclaimer ]

Abstract | Saltwater Intrusion | Land Use and Land Use Cover | Surface Water Conveyance System | Municipal Water Use | Agricultural Water Use | Ground-Water Flow System | Canal Stage and Discharge | Impact on Ecosystem

Changes To Flow System And Its Impact On The Marine Ecosystem In Biscayne Bay

map of Biscayne Bay region and location of corehole sites MB1 and FB1
[larger image]
Map showing the Biscayne Bay region and the location of corehole sites MB1 and FB1. Arrows are used to highlight the landward effect of marine waters from the Atlantic Ocean and coastward direction of fresh surface and ground water toward the Bay. The FB1 site is strongly influenced by the influx of Atlantic marine waters whereas MB1, the coastal site, is strongly impacted by changes in freshwater deliveries.


FB-1
MB-1
Elphidium galvestonense / Ammonia parkinsoniana
graph of temporal species distribution in corehole FB-1 graph of temporal species distribution in corehole MB-1
[larger image]

Graph shows temporal species distribution plots in coreholes FB1 and MB1. These data illustrate that regardless of the difference in corehole location, typical marine species have similar distribution patterns. These distribution plots suggest that changes in the ecosystem can be correlated despite differences in marine environments. The coastal MB1 site exhibits high-amplitude faunal fluctuations in response to changes in salinity. The open-bay FB1 site illustrates ecosystem changes that have been buffered by the influence of the Atlantic Ocean.


FB-1
MB-1
Articulina mucronata
plot of Articulina mucronata at FB-1 plot of Articulina mucronata at MB-1
Archaias angulatus
plot of Archaias angulatus at FB-1 plot of Archaias angulatus at MB-1
Miliolinella circularis
plot of Miliolinella circularis at FB-1 plot of Miliolinella circularis at MB-1
[larger image]

Plot of foraminiferal species, Elphidium galvestonense and Ammonia parkinsoniana showing the sensitivity of site MB1 to variations in salinity. Salinity indicators are generally absent in the open-bay corehole (FB1-1) record.


Click here for a printable version of this page (note: document will open in a new browser window)

For more information contact:

Bob Renken
U.S. Geological Survey
9100 N.W. 36th Street Suite 107,
Miami, FL, 33178
Phone: (305) 717-5822
Fax: (305) 717-5801
EMAIL: rarenken@usgs.gov

Related information:

SOFIA Project: Synthesis on the impact of 20th Century water-management and land-use practices on the coastal hydrology of southeast Florida

[ Disclaimer ]



| Disclaimer | Privacy Statement | Accessibility |

U.S. Department of the Interior, U.S. Geological Survey
This page is: http://sofia.usgs.gov/geer/2000/posters/use_impact/ecosystem.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 04 September, 2013 @ 02:07 PM (KP)