CatchPanasoffkee (Sumter County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°48'22", Longitude 82°7'26"
Period of record: 81 sampling dates; August 5, 1988 to July 14, 1999
Surface area (Shafer et al. 1986): No data available.
Lake Region (Griffith et al. 1997): Central Valley
Geologic formation (Brooks 1981):
The geology is dominated undifferentiated sand, shell, clay, marl, and peat of the Holocene and limestone consisting of skeletons of fossils in a silt to sand size matrix of the Ocala Limestone Formation.
Physiographic region (Brooks 1981):
The water body lies in the Tsala Apopka Basin division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 4 months sampled:
|
pH |
8.4 |
Sulfate (mg/L) |
23.1 |
|
Total alkalinity (mg/L as CaCO3) |
94.8 |
Calcium (mg/L) |
40.3 |
|
Conductance (µS/cm @ 25 °C) |
234 |
Magnesium (mg/L) |
16.6 |
|
Color (Pt-Co units) |
36 |
Sodium (mg/L) |
5.7 |
|
Chloride (mg/L) |
10.0 |
Potassium (mg/L) |
0.2 |
|
Silicon (mg/L) |
9.3 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 81 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
28 |
125 |
|
Long-term total nitrogen concentrations (µg/L) |
330 |
740 |
1640 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
12.2 |
139.7 |
|
Long-term Secchi depth (ft) |
2.2 |
4.1 |
8.0 |
1999 Florida LAKEWATCH Data
Numbers reported below are monthly averages calculated from 3 stations for total phosphorus (TP, µg/L), total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1999:
|
Date |
TP (µg/L) |
TN (µg/L) |
CHL (µg/L) |
SECCHI (ft |
|
Mar-12-99 |
17 |
570 |
3.3 |
4.2 |
|
Jul-14-99 |
14 |
630 |
5.3 |
3.1 |
|
|
|
|
|
|
|
1999 Average |
15 |
600 |
4.3 |
3.7 |
Panasoffkee (Sumter County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 26, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
94 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
65 |
|
Average emergent plant biomass (kg wet wt/m2) |
6.3 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
3.6 |
|
Average submersed plant biomass (kg wet wt/m2) |
17.5 |
|
Average width of emergent and floating-leaved zone (ft.) |
509 |
|
Average lake depth (m) |
1 |
Frequency that plant species occur in 30 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
coontail |
Ceratophyllum demersum |
100 |
|
hydrilla |
Hydrilla verticillata |
100 |
|
cat-tail |
Typha spp. |
93 |
|
water-pennywort |
Hydrocotyle umbellata |
90 |
|
tapegrass |
Vallisneria americana |
90 |
|
pickerelweed |
Pontederia cordata |
87 |
|
common duckweed |
Lemna minor |
77 |
|
giant bulrush |
Scirpus californicus |
73 |
|
elderberry |
Sambucus canadensis |
70 |
|
southern naiad |
Najas guadalupensis |
67 |
|
willow |
Salix spp. |
67 |
|
evening primrose family |
Onagraceae |
60 |
|
yellow water-lily |
Nymphaea mexicana |
53 |
|
frog's-bit |
Limnobium spongia |
43 |
|
green algae |
Chlorphyta |
40 |
|
water hemlock |
Cicuta mexicana |
40 |
|
duck-potato |
Sagittaria lancifolia |
37 |
|
Illinois pondweed |
Potamogeton illinoensis |
33 |
|
bald cypress |
Taxodium distichum |
27 |
|
para grass |
Brachiaria mutica |
23 |
|
water-lettuce |
Pistia stratiotes |
20 |
|
parrot's-feather |
Myriophyllum aquaticum |
13 |
|
Baldwin flat sedge |
Cyperus globulosus |
13 |
|
slender spikerush |
Eleocharis baldwinii |
10 |
|
fragrant water-lily |
Nymphaea odorata |
10 |
|
elephant-ear |
Colocasia esculenta |
10 |
|
sawgrass |
Cladium jamaicense |
10 |
|
knot grass |
Paspalum distichum |
10 |
|
alligator-weed |
Alternanthera philoxeroides |
7 |
|
smartweed |
Polygonum hydropiperoides |
7 |
|
floating water-hyacinth |
Eichhornia crassipes |
3 |
|
salt-bush |
Baccharis spp. |
3 |
|
water primrose |
Ludwigia octovalvis |
3 |
|
torpedograss |
Panicum repens |
3 |
Panasoffkee (Sumter County)
Electrofishing Data
|
|
|
|
Canfield and Hoyer (1992) Ranges |
||
|
Species1 |
#/hr |
kg/hr2 |
min weight (kg/hr) |
mean weight (kg/hr) |
max weight (kg/hr) |
|
Black crappie |
1 |
0 |
0.1 |
6.4 |
28.7 |
|
Bluefin killifish |
22 |
0 |
0 |
0 |
0.1 |
|
Bluegill |
82 |
1.9 |
0.3 |
50.3 |
447 |
|
Bluespotted sunfish |
5 |
0 |
0 |
0 |
0.1 |
|
Bowfin |
15 |
14.1 |
3 |
54.5 |
225 |
|
Brook silverside |
2 |
0 |
0 |
0.2 |
1.4 |
|
Brown bullhead |
7 |
2 |
0.1 |
14.5 |
72.1 |
|
Chain pickerel |
15 |
1.9 |
0 |
17.5 |
57.1 |
|
Dollar sunfish |
18 |
0.1 |
0 |
0.3 |
0.5 |
|
Eastern mosquitofish |
13 |
5.9 |
0 |
0.14 |
1.97 |
|
Florida gar |
31 |
0.1 |
0.8 |
50.1 |
328.6 |
|
Golden shiner |
59 |
10.6 |
0 |
6.9 |
65 |
|
Lake chubsucker |
35 |
0.8 |
0.1 |
40.7 |
161.9 |
|
Largemouth bass |
2 |
0 |
1.1 |
82 |
284.6 |
|
Redear sunfish |
60 |
0.5 |
0.1 |
24.3 |
183.1 |
|
Seminole killifish |
3 |
0 |
0 |
4.2 |
22.3 |
|
Spotted sunfish |
1 |
0 |
0 |
0.9 |
3.2 |
|
Swamp darter |
3 |
0 |
0 |
0 |
0 |
|
Warmouth |
31 |
1 |
0 |
1.5 |
12 |
|
|
|
|
|
|
|
|
Total |
405 |
38.9 |
|
|
|
1
Total # of species = 19.
Catch
per unit of effort (kg of fish / hour of sampling) versus total chlorophyll (mg/m3) and number of fish species collected versus surface area of lake for 60 Florida lakes sampled by Canfield and Hoyer (1992) (•) and Lake Panasoffkee (Sumter County) electrofishing sampling (o). The lines represent linear regressions for logged values of the 60 Florida lakes.