Review Article

A Habitat-Based Framework for Communicating Natural Resource Condition

Table 1

Sources of data used in the Rock Creek Park resource condition assessment.

Metrics (by habitat)AgencyReference/sourceSitesSamplesPeriod

Forest
 Exotic tree/shrub densityNPS I & M[38, 39]342006-2007
 Presence of forest pest speciesNPS I & M[38, 39]332005–2007
 Presence of forest interior dwelling species (FIDS) of birdsDC Birdscape II; NPS I & M[40, 41]Park32003–2008
 Deer densityNPS I & M[42]Park82000–2007
 Native seedling regenerationNPS I & M[38, 39]552006-2007
 Critical connectivity (Dcrit; within Park)UMCES; NPS[27]Park12001-2002
 Proportion of impervious surface (within Park)UMCES; NPSNCRN I & MPark12000

Wetland (inland)
 Total phosphorusNPS I & M[43]132302005–2007
 SalinityNPS I & M[43]132192005–2007
 Aqueous nitrateNPS I & M[43]132342005–2007
 Dissolved oxygenNPS I & M[43]132412005–2007
 Benthic index biological integrity (BIBI)NPS I & M, Montgomery County[44] Montgomery County, DEP662000–2004
 Proportion of area occupied (PAO) by amphibiansNPS I & M[45]Park92005–2007
 Physical habitat index (PHI)NPS I & M, Montgomery County[44] Montgomery County, DEP382000–2004

Artificial-terrestrial
 Deer densityNPS I & M[42]Park82000–2007
 Proportion of impervious surface (within Park)UMCES; NPSNCRN I & MPark12000
 PM2.5 concentrationIMPROVEhttp://vista.cira.colostate.edu/improve/ 3 152000–2004
 OzoneEPA & NPS ARDhttp://www.epa.gov/castnet/ 2 82000–2003
 Wet SO4 depositionNADPhttp://nadp.sws.uiuc.edu/ 3 102000–2007
 Total NO3 deposition (cultivated)NADPhttp://nadp.sws.uiuc.edu/ 3 102000–2007
 Hg depositionMDN-NADPhttp://nadp.sws.uiuc.edu/mdn/ 1 862004–2006

DEP: Department of Environmental Protection; EPA: US Environmental Protection Agency; I & M: Inventory and Monitoring; MBSS: Maryland Biological Stream Survey; MDN: Mercury Deposition Network; NADP: National Atmospheric Deposition Program; NCRN: National Capital Region Network; NPS: National Park Service; UMCES: University of Maryland Center for Environmental Science.