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Natural Communities of Lake Jackson Aquatic Preserve Quick Topics
Wet prairie

Cattle gap

Wet Prairie

Wet prairies are communities of non-woody vegetation found on continuously wet, but not inundated soils on flat gentle slopes. They are dominated by dense wiregrass in dry areas and a mixture of wiregrass and sedges in the wetter portions. Wet prairies in North Florida are some of the most diverse communities in the United States with an average of more than 20 species per square meter. These communities are very sensitive to alterations to the soil surface which can alter the hydrology. Wet prairies are prevalent in the northern section of Lake Jackson near the "cattle gap".


Clastic Upland Lake

Clastic upland lakes are generally characterized as shallow to relatively deep, irregular -shaped depressions or basins occurring in uplands on substrates. They have surface inflows, but are often without significant outflows. Water is generally dissippated through evaporation and transpiration, but it may also disappear through sinks that connect with the aquifer, especiallyduring prolonged droughts.


An exposed sinkhole



The karst topography of north Florida produces numerous sinkholes from the dissolution of the underlying limestone. The Lake Jackson has small to medium-sized sinkholes scattered across the bottom. The natural drawdown and refill cycles of the lake are determined by the activity of these sinks and the amount of rainfall to the area. The sinkholes are important to the lake's ecosystem because natural periodic draining creates a cleansing effect for the lake, allowing invasive vegetation to die off and exposing organic sediments which eventually dry out.



Last updated: March 22, 2016

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