Vegetation Classification and Mapping Project Report - USGS
Vegetation Classification and Mapping Project Report - USGS
Vegetation Classification and Mapping Project Report - USGS
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<strong>USGS</strong>-NPS <strong>Vegetation</strong> <strong>Mapping</strong> Program<br />
Colonial National Historical Park<br />
Appendix H. Compositional summary statistics for vegetation associations within Colonial<br />
National Historical Park derived from the analysis of regional quantitative plot data.<br />
Compositional statistics were calculated to evaluate the adequacy of groups recognized in cluster<br />
analysis <strong>and</strong> ultimately to assist in naming <strong>and</strong> describing vegetation associations. Only<br />
associations derived from quantitative analysis of the regional plot data are shown. Total mean<br />
cover <strong>and</strong> total frequency were determined for every taxon across the entire dataset.<br />
Compositional statistics are shown only for prevalent species in each vegetation association,<br />
except for those associations where mean species richness is less than or equal to 10 species.<br />
Prevalence is an attribute assigned to a portion of the species within a vegetation type (Curtis<br />
1959). Prevalence is determined by ranking the species of a vegetation type in order of<br />
descending constancy then, beginning with the most constant species, selecting as prevalent, a<br />
number of species equal to the mean species richness for the vegetation type. Species shaded in<br />
green were chosen as primary nominals in the association name, while those in blue are<br />
parenthetical nominals.<br />
See Methods - <strong>Vegetation</strong> <strong>Classification</strong> <strong>and</strong> Characterization - Summary Statistics section for an<br />
explanation of variables shown in each table.<br />
<strong>Vegetation</strong> associations are presented as follows:<br />
Acidic Oak - Hickory Forest .......................................................................................................... Table H5<br />
Coastal Plain / Piedmont Floodplain Swamp Forest (Green Ash - Red Maple<br />
Type) ..................................................................................................................................... Table H10<br />
Coastal Plain / Piedmont Small-Stream Floodplain Forest ............................................................ Table H9<br />
Coastal Plain Calcareous Seepage Swamp .................................................................................... Table H8<br />
Coastal Plain Depression Wetl<strong>and</strong> (Red Maple - Sweetgum - Willow Oak Type) ..................... Table H11<br />
Coastal Plain Depression Wetl<strong>and</strong> (Swamp Tupelo Type) .......................................................... Table H12<br />
Coastal Plain Dry Calcareous Forest ............................................................................................. Table H7<br />
Coastal Plain Loblolly Pine - Oak Forest ....................................................................................... Table H2<br />
Coastal Plain Mesic Calcareous Ravine Forest .............................................................................. Table H6<br />
Mesic Mixed Hardwood Forest ...................................................................................................... Table H3<br />
Non-Riverine Saturated Forest .................................................................................................... Table H13<br />
Piedmont / Coastal Plain Oak - Beech / Heath Forest ................................................................... Table H4<br />
Piedmont / Low Elevation Mixed Oak / Heath Forest ................................................................... Table H1<br />
Salt Scrub ..................................................................................................................................... Table H22<br />
Tidal Bald Cypress Forest / Woodl<strong>and</strong> ........................................................................................ Table H24<br />
Tidal Freshwater Marsh Table H14<br />
Tidal Mesohaline <strong>and</strong> Polyhaline Marsh (Low Salt Marsh) ........................................................ Table H15<br />
Tidal Mesohaline <strong>and</strong> Polyhaline Marsh (Transitional Marsh) ................................................... Table H16<br />
Tidal Oligohaline Marsh (Big Cordgrass Type) .......................................................................... Table H19<br />
Tidal Oligohaline Marsh (Common Reed Tidal Marsh) .............................................................. Table H17<br />
Tidal Oligohaline Marsh (Interior Depression Marsh) ................................................................ Table H18<br />
Tidal Oligohaline Marsh (Mixed Forbs Type) ............................................................................. Table H20<br />
Tidal Oligohaline Marsh (Saltmeadow Cordgrass - Olney Three-Square Low<br />
Interior Marsh Type) ............................................................................................................. Table H21<br />
Tidal Shrub Swamp (Wax Myrtle Type) ..................................................................................... Table H23<br />
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