. Bulletins of American paleontology. Hydrology, Vegetation, and Climate: Winkler et al. 79 LIGNUM VIIAE KEY, Flondo LV-2 Hiller Core Diolom Percentages M. Winkler. Anolysl 210 ± 25 I 250 t JO I ^1 2290 1 50 I 10, 15 20 ^ 25 30- 35- *0 45 If 50 ^ 55 I 60H 65 70 75 85- 90 95 100 *^^ ,nS> ,<f o y^^ .i^,.'!^"..V* â ^.-V V*. 20 40 DIATOM PERCENTAGES Z'^'^^^*'' #1^^ .^v- .<.*'\^" 20 40 60 80 100 Text figure 12.âLignum Vitae Key. Florida. LV2 Diatom Percentage Diagram. Radiocarbon dates are placed to the left of the diagram. Oldest sediment is at the bottom of the column. and Pin
. Bulletins of American paleontology. Hydrology, Vegetation, and Climate: Winkler et al. 79 LIGNUM VIIAE KEY, Flondo LV-2 Hiller Core Diolom Percentages M. Winkler. Anolysl 210 ± 25 I 250 t JO I ^1 2290 1 50 I 10, 15 20 ^ 25 30- 35- *0 45 If 50 ^ 55 I 60H 65 70 75 85- 90 95 100 *^^ ,nS> ,<f o y^^ .i^,.'!^"..V* â ^.-V V*. 20 40 DIATOM PERCENTAGES Z'^'^^^*'' #1^^ .^v- .<.*'\^" 20 40 60 80 100 Text figure 12.âLignum Vitae Key. Florida. LV2 Diatom Percentage Diagram. Radiocarbon dates are placed to the left of the diagram. Oldest sediment is at the bottom of the column. and Pinnularia species, as well as more alkaline Am- phora. Anomoneis. Nitzschia. Cocconeis, and Diplo- iieis spp. A study by Wood and Maynard (1974) may illuminate reasons for the unexpected presence of Eu- notia and Pinnularia diatoms at this site. These inves- tigators analyzed algae trapped in air nets placed on the 7-mile fire tower in ENP. They found that aside from marine algae which had traveled more than 64 km from the sea, there were several species of acid and circumneutral Eiinotia and Pinnularia diatoms in the traps which had probably been airborne from northern and central Florida sites. Eunotia and Pin- nularia are frequently found growing in lakes under- lain by acidic sands in northcentral Florida (Sweets et 1989; Whitmore, 1989; Sweets et ai. 1990). Other aerophilic diatoms found in the air nets included Mas- togloia. Amphora. Nitzschia. and Hantzschia species, and Asterionella formosa (Wood and Maynard, 1974). They also analyzed ENP surface water foams which contained diatoms and theorized that these foams were easily picked up, shredded, and transported by the wind to colonize or recolonize distant sites. The pres- ence of Hurricane Andrew debris at several Everglades sites during our fieldwork in February 1993 (Winkler, personal observation) illustrates the importance of wind as a factor for distribution of diatoms and other organisms in storm-swept south
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