International Journal of Ecology / 2011 / Article / Tab 1

Research Article

Species Richness and Diversity of Resident and Migratory Landbirds in Remnant Forest Patches and Residential Areas in the Florida Keys, USA

Table 1

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.

VariableDescriptionProtected sitesUnprotected sites
MeanSDMedianRangeMeanSDMedianRange

PCT_HAMSite variable: percent cover of native hammock canopy with intact understory96810065–100183000–100
PCT_CANSite variable: percent cover of native hammock tree canopy cover with cleared understory<1100–61816150–65
PCT_LAWNSite variable: percent cover of residential lawn (turfgrass, ornamental plantings, pavement, and structures) 1200–10101160–35
PCT_OTHERSite variable: percent cover of nonhammock vegetation (e.g., marsh, mangroves, pinelands)<1200–81500–27
D2HAMLandscape variable: distance (m) to closest hammock (if survey site was located within a hammock, D2HAM = 0)00005983260–417
SIZEHAMLandscape variable: size (ha) of closest hammock (if survey site was within a hammock, the size of that hammock was recorded)2930131–70719<1<1–87

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