SAV Home > 2013 SAV Report > Species and Ground Surveyors Key

SPECIES

Zm Zostera marina (eelgrass)
Rm Ruppia maritima (widgeon grass)
C Chara sp. (muskgrass)
Cd Ceratophyllum demersum (coontail)
Cl Callitriche sp. (water-starwort)
Ec Elodea canadensis (common elodea)
Ed Egeria densa (water-weed)
Hd Heteranthera dubia (water stargrass)
Hv Hydrilla verticillata (hydrilla)
Ms Myriophyllum spicatum (Eurasian watermilfoil)
N Najas sp. (naiad)
Nfl Najas flexilis (northern naiad)
Ngr Najas gracillima (slender naiad)
Ngu Najas guadalupensis (southern naiad)
Nm Najas minor
Nt Nitella sp. (muskgrass)
Pcr Potamogeton crispus (curly pondweed)
Pe Potamogeton epihydrus (leafy pondweed)
Pn Potamogeton nodosus (American pondweed)
Ppc Stuckenia pectinata (sago pondweed)(Potamogeton pectinatus)
Ppf Potamogeton perfoliatus (redhead-grass)
Ppu Potamogeton pusillus (slender pondweed)
S Sparganium sp. (bureed)
Tn Trapa natans (water chestnut)
Va Vallisneria americana (wild celery)
Zp Zannichellia palustris (horned pondweed)
U Unknown species composition

GROUND SURVEYORS

Baltimore County Department of Environmental Protection and Resource Management
Citizen
Chesapeake College
District of Columbia Fisheries and Wildlife Division
Maryland Coastal Bays Program
Maryland Department of Natural Resources
Maryland Environmental Service
Multiple Surveyors
National Oceanic and Atmospheric Administration
National Park Service
United States Fish and Wildlife Service
University of Maryland Center for Environmental Science
United States Geological Survey
University of Virginia
Virginia Department of Game and Inland Fisheries
Virginia Institute of Marine Science

2013 SAV Density Class Key
 0 - 10%
 10- 40%
 40 - 70%
 70 - 100%

 

2013 Comparison Map Key
  2013 SAV
  2012 SAV
  SAV both years

Each bed is identified with an unique two letter (A,B,C,...,AA,BA,CA,...) and one number (1-4) designation. The numbers represent the density classification discussed in the text, i.e., 1 = <10%; 2= 10-40%; 3= 40-70%; 4= 70-100%.