Archbold Biological Station, Biennial Report 1997-1998



Sandhill vegetation on Red Hill, Archbold Biological Station. This slash pine-turkey oak association was photographed on 4 February 1993 (upper) and on 22 January 1998 (lower) at photo point 166NE on the TO2 grid, J10. This long-unburned (+65 years) site was burned (prescribed burn 93-4) on 25 May 1993; photos by Kevin Main.


Environmental and Biological Monitoring

Land Manager: Kevin N. Main
Research Assistant: Nancy D. Deyrup
Hydrology Volunteer: Charles A. Webster

Coyote Census Volunteers: Helen W. Obenchaine, Michael A. McMillian

[Biennial Contents | Biennial 95-96]

Environmental and biological monitoring are essential to provide background data for Station projects. These long-term data sets are used frequently by both staff and visiting scientists. Some Station datasets (see Climatological Information) go back more than 60 years. Station staff continue data collection for a variety of long-term projects.

     Hydrology and Limnology. The Station has been collecting various surface and ground water records since 1982. Surface-water levels for Lake Annie, the Price Tract on Lake Placid, and at three sites on the Station’s main property, are recorded weekly. The depth to water table in 3 wells and surface-water levels in 25 of the Station’s seasonal ponds (since 1989) are recorded twice monthly. In collaboration with Lawrence E. Battoe (St. Johns Water Management District), surface water chemistry parameters of Lake Annie are collected (since 1983) weekly for pH and conductivity analysisand monthly for standard water chemistry parameters.

     Plant Studies. The phenology of over 100 Station plant species is recorded weekly or bimonthly (since 1992). Data recorded include time of flower-budding, flowering, fruiting, and new-leaf flush. Photo points, (started in 1992), are taken every 5 years at 200 points around the Station. The second full set, over 800 images, of photo points was photographed during 1997-98 (see photo this page). Additional photos are taken at points in or adjacent to recent fires up to 2 years postfire.

     Coyote Census. During 1997-98 (Feb. & March), the Station and the Ranch participated in a Coyote Scent-Station Survey organized by Pat Walsh (Avon Park Air Force Range) to document the distribution of coyotes in Florida. A commercial attractant, Fatty Acid Scent (FAS) in disk form is placed in a 1 meter circle, raked smooth to detect tracks. Scent stations were located 1 mile apart in a grid. Coyotes were recorded in 14 of 19 counties, including both years at the Ranch, but not on the Station. Recently, coyotes have been heard calling near the Station.

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Archbold Biological Station, 12 April 2000
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blkball.gif (842 bytes) Archbold Biological Station, P.O. Box 2057, Lake Placid, Florida 33862 USA
Phone: 863-465-2571, FAX: 863-699-1927, email