Description and quantification (mean and standard deviation, median and range) of site and landscape variables at protected and residential sites where bird surveys were conducted (20-m fixed radius point counts) in the Florida Keys during March–May 2004 and 2005.
|Variable||Description||Protected sites||Unprotected sites|
|PCT_HAM||Site variable: percent cover of native hammock canopy with intact understory||96||8||100||65–100||18||30||0||0–100|
|PCT_CAN||Site variable: percent cover of native hammock tree canopy cover with cleared understory||<1||1||0||0–6||18||16||15||0–65|
|PCT_LAWN||Site variable: percent cover of residential lawn (turfgrass, ornamental plantings, pavement, and structures)|| 1||2||0||0–10||10||11||6||0–35|
|PCT_OTHER||Site variable: percent cover of nonhammock vegetation (e.g., marsh, mangroves, pinelands)||<1||2||0||0–8||1||5||0||0–27|
|D2HAM||Landscape variable: distance (m) to closest hammock (if survey site was located within a hammock, D2HAM = 0)||0||0||0||0||59||83||26||0–417|
|SIZEHAM||Landscape variable: size (ha) of closest hammock (if survey site was within a hammock, the size of that hammock was recorded)||29||30||13||1–70||7||19||<1||<1–87|