USGS
South Florida Information Access
SOFIA home
Help
Projects
by Title
by Investigator
by Region
by Topic
by Program
Results
Publications
Meetings
South Florida Restoration Science Forum
Synthesis
Information
Personnel
About SOFIA
USGS Science Strategy
DOI Science Plan
Education
Upcoming Events
Data
Data Exchange
Metadata
geer > 2000 > poster > molluscan faunal distribution in florida bay, past and present: an integration of down-core and modern data > modern field data

Molluscan Faunal Distribution in Florida Bay, past and present: An integration of down-core and modern data

[ Disclaimer ]

Introduction and Methods | Modern Field Data | Core Data | Water Quality and Salinity | Vegetation | Diversity and Abundance | Conclusion and Future Directions

Modern Field Data

plot of temperature versus salinity

[larger image]
Temperature (ºC) versus salinity (ppt) recorded at sites from February 1996 through July 1999. Histogram on x axis shows frequency of observations in 5 ppt increments. Histogram on y axis shows frequency of observations in 5ºC increments. Bimodal nature of temperature readings reflects seasonality.

salinity gradient and cluster designation map for February 1996 salinity gradient and cluster designation map for February 1997
salinity gradient and cluster designation map for February 1998 salinity gradient and cluster designation map for February 1999
salinity gradient and cluster designation map for July 1996 salinity gradient and cluster designation map for July 1997
salinity gradient and cluster designation map for July 1998 salinity gradient and cluster designation map for July 1999
[click on images to view larger version]

Maps showing 5 ppt salinity gradients and the prominent cluster designations from the presence-absence Q-mode analysis for the sampling periods from February 1996 through July 1999. Note the change that occurs in February 1998. Due in part to the strong ENSO effects, February 1998 looks more like a summer or "wet season" pattern, and July 1998 and 1999 look more like a winter or "dry season" pattern.

Map below is a composite of clusters illustrated for four year period shown in individual seasonal maps above. Composite shows maximum extent of cluster during period analyzed.
A Batillaria minima and/or Melongena corona Assemblage
C Brachidontes exustus Assemblage
D Pteria longisquamosa [= Pinctada radiata] and Modulus modulus Assemblage
F Turbo castanea, Tegula fasciata and Columbella spp., Assemblage
G Pinnidae Assemblage
map of composite of clusters
[larger image]

Next: Core Data

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

Related information:

SOFIA Project: Ecosystem History: Florida Bay and the Southwest Coast

[ 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/mollusc_dist/fielddata.html
Comments and suggestions? Contact: Heather Henkel - Webmaster
Last updated: 23 December, 2004 @ 08:13 AM (KP)