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What is happening at Lake Annie?
Workshop goals:
1) Help us interpret the limnological and other water quality data from
Lake Annie that goes back over the last 20+ years, and
2) Review continuing science: What; additional studies and analyses,
other cross site comparisons, linking modern data with paleo data, or
additional coring, would be fruitful and worthwhile?
Introduction. Lake Annie is a pristine, 90-acre sinkhole lake at the
northern end of the Archbold Biological Station Main Property <http://www.archbold-station.org/abs/regionalecol/lkannie.htm>
. Purchased in 1983, the lake is of exceptional geological and
ecological interest. It lies at 111 feet (33.7 m) above mean sea level,
and is the southernmost of a series of sinkhole lakes extending 200
miles north along and beyond the Lake Wales Ridge. (see Layne 1979 in
Lake Annie bibliography <http://www.archbold-station.org/abs/regionalecol/anniebib.htm>).
The lake is 68 feet (20.7 m) deep and contains at least 36 feet (11 m)
of sediment. Pollen analysis and 14C dating of sediment cores reveal a
record of area vegetation for the past 44,000 years (papers by Watts and
co-authors). The lake is fed by rainfall and groundwater and develops a
thermocline at about 33 feet (10 m) during the summer. Much of the
watershed for Lake Annie, as defined by USGS, lies within the pristine
habitats of the Station, but there are neighboring adjacent land uses of
concern including an asphalt plant to the SE, an “intensive” small
cattle operation to the east, and a citrus grove, planted in the early
1980s, to the west. Limnological studies started in 1980 by Larry Battoe
(see Lake Annie bibliography) have been continued, without break, since
1983, with monthly analyses of various limnological and water quality
parameters. The lake has also been monitored by the
Florida LAKEWATCH
program (Univ. Florida, Inst. Food Agr. Sci.) since 2000.
The stimulus for organizing this workshop is that over the last year
Evelyn Gaiser, Florida International University, has pulled together the
Lake Annie limnological and water quality data collected by Archbold
staff and various other agencies, and she has conducted a preliminary
analyses. The trends are; a marked decline in Secchi Disk transparency
since 1992 and a concomitant increase in light extinction, an increase
in depth to the July thermocline, differences in summer DO profiles, and
an increasingly shallower depth to anoxic conditions over time.
Sulphates rose in the late 1980s and early 1990s and have since fallen
considerably. pH data have proved difficult to verify and we may have
had problems with the probe. Nutrient data are more recent but show
indications of increasing TP levels. Evelyn plans to write up these data
for publication but we both feel it would be very valuable to share
these findings to date and get broader input to assist in
interpretation.--Hilary M. Swain, Executive Director, Archbold
Biological Station.
Agenda
Thursday Evening, 23 June 2005
6:00 Welcome BBQ (outside the Dining Room) SIGN-UP IS REQUIRED
7:30-8:30
1. Hilary M. Swain, Archbold Biological Station, with James N. Layne,
Lake Placid, Florida. Introduction to Lake Annie.
8:30-onwards DISCUSSION and SOCIAL
Friday Morning, 24 June 2005
8:00 FIELD TRIP to Lake Annie
9:45 BREAK
10:00-11:30
2. Evelyn E. Gaiser, Florida International University. Long-term trends
in the Lake Annie dataset. Followed by discussion of results.
11:30-12:00.
3. Roger W. Bachmann, University of Florida, and Evelyn Gaiser, Florida
International University. (Title tentative) General trends; comparing
Lake Annie data with LAKEWATCH data statewide.
12:00-1:00 LUNCH ($6 Charge, SIGN UP, before 10:00, IN MAIN OFFICE)
Friday Afternoon, 24 June 2005
1:00-1:20
4. Jennifer Donze and Clell Ford, Highlands County Department of Natural
Resources. Long-term trends in water quality data from Highlands
County’s Lake Wales Ridge lakes that are similar to Lake Annie.
1:20-1:40
5. Isabela Claret Torres, University of Florida. Biogeochemical
properties and microbial activity of Lake Annie sediments.
1:40-2:00
6. Curtis Pollman, Tetra Tech, Gainesville, Florida. Historical changes
in Mercury accumulation rates in Lake Annie and other ruminations.
2:00-3:00
7. Discussion about future data needs and approaches. Break-out groups
organized around different topics; publications, proposals, & continuing
science.
3:00-3:15 BREAK
3:30- 4:30
7. (Continued) Discussion about future data needs and approaches.
Break-out groups organized around different topics; publications,
proposals, & continuing science.
4:30 onwards OPTIONAL
Reconvene at Lake Annie for a social, continued discussions, and a swim
for those who want to dip in the waters!
Invited
Participants
|
Participant
Name |
Address |
Phone/Fax |
Email |
|
William
Anderson |
Florida
International University, SERC/Earth Sciences, 11200 SW 8th
Street, Miami, FL 33199 |
305-348-2693
305-348-3877
fax |
William.Anderson@fiu.edu |
|
Roger
Bachmann |
University of
Florida
P. O. Box
110600
Gainesville,
FL 32653-3071 |
352-392-9617 |
rbach@ufl.edu |
|
Larry Battoe |
St. Johns
Water Management District
Assistant
Division Director,
Environmental
Sciences Div., P. O. Box 1429,
Palatka, FL
32178-1428 |
386-329-4398
386-329-4329
fax |
lbattoe@sjrwmd.com |
|
Isabela
Claret Torres |
Wetland
Biogeochemistry Lab, Soil and Water Science Dept., University of
Florida
P. O. Box
110510, Gainesville, FL 32611-0510 |
352-392-1804
x334
352-392-3399
fax |
ictorres@ufl.edu |
|
Nancy Deyrup |
Archbold
Biological Station
P. O. Box
2057
Lake Placid,
FL 33862 |
863-465-2571
863-699-1927
fax |
ndeyrup@archbold-station.org |
|
Jennifer
Donze |
Highlands
County Natural Resources Dept., 4505 George Boulevard, Sebring,
FL 33875-5837 |
863-402-6545
863-385-7028
fax |
Jdonzebcc.co.highlands.fl.us |
|
Evelyn Gaiser |
Florida
International University
Biological
Sciences
11200 SW 8th
Street
Miami, FL
33199 |
305-348-6145
305-348-4096
fax |
Evelyn.Gaiser@fiu.edu |
|
Eric Grimm |
Illinois
State Museum
Spring and
Edwards Streets
Springfield,
IL 62706-5000 |
217-785-4846
217-785-2857
fax |
grimm@museum.state.il.us |
|
Timothy K.
Kratz |
University of
Wisconsin – Madison
Limnology
Laboratory
680 North
Park Street
Madison, WI
53706 |
715-356-9494 |
tkkratz@facstaff.wisc.edu |
|
Jim Layne |
Archbold
Biological Station
P. O. Box
2057
Lake Placid,
FL 33862 |
863-465-4240 |
Jlayne@strato.net |
|
Curtis D.
Pollman |
Tetra Tech,
Inc.
408 W.
University Avenue
Suite 301
Gainesville,
FL 32608 |
352-379-2757
352-379-2771
fax |
cpollman@worldnet.att.net |
|
Amanda
Quillen |
Florida
International University
11200 SW 8th
Street
Miami, FL
33199 |
305-348-6167 lab
786-877-8163 cellular |
amanda.quillen@fiu.edu |
|
Hilary Swain |
Archbold
Biological Station
P. O. Box
2057
Lake Placid,
FL 33862 |
863-465-2571
863-699-1927
fax |
hswain@archbold-station.org |
|
Serge Thomas |
Florida
International University, 11200 SW 8th Street, Maimi,
FL 33199 |
305-348-7479
305-348-4096
fax |
thomasse@fiu.edu |
|
Robert
Ulanowitz |
University of
Maryland System , Chesapeake Biological Lab., P.O. Box 38 ,
Solomons, MD 20688-0038 |
(410)
326-7266
(410)
326-7378 fax |
ulan@cbl.umces.edu
|
|
Catherine
Wolden |
South Florida
Water Management District,
, 601 U.S. HWY.
301 N., Tampa, FL 33637 |
813-985-7481,
Ext. 2117
|
Catherine.Wolden@swfwmd.state.fl.us
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Last update
11 October 2005 © Archbold Biological Station,
June 2005