Limnology of Lake Annie. Water chemistry parameters of Lake Annie have been collected since 1983. During 1999-00 weekly surface water chemistry samples were collected and analyzed for pH and conductivity. Additional water chemistry parameters (light levels, temperature, dissolved oxygen, and sulfate concentrations) were collected monthly at 2-meter intervals down to 20 meters at the deepest part of the lake. During 1999-00 Lake Annie pH levels varied between 5.10 in the summer to 5.31 in the winter; this is in the normal range.

Hydrology. During 1999-00 the Station continued to collect surface and ground water records (since 1982). With locally heavy rains in 1999, surface and ground water levels were very high with many temporary ponds overflowing onto the sand roads (see photo, this page). However, in 2000, Archbold, and most of peninsular Florida, was in a severe drought (see Climate Information) and many seasonal ponds were dry even in summer. The years 1999-00, therefore presented remarkable hydrological extremes.

Coyote Census. The Florida coyote census is a long-term monitoring program (initiated in 1997) that monitors distribution and population trends of coyotes. Martin B. Main (Univ. Florida, IFAS Center at Immokalee) coordinates this program. To document the presence of coyotes, a scent station is established by placing a Fatty Acid Scent disk in a 1-meter circle in a smoothed area of bare sand. During 1999-00 (in February) both the Station and the Ranch participated in the survey. No coyote visits were recorded at Archbold but four visits were noted at the Ranch.