<descriptor thcode="62"><thesaurus thcode="62" name="Coastal and Marine Ecological Classification Standard" scope="Categories of ecosystems for coastal, estuarine, and marine environments." creator="FGDC" rights="public domain" date="2017-05-10" codetype="alpha" prefix="cmecs" uri="https://www2.usgs.gov/science/CMECS" tblname="cmecs" root_code="root" contact="pschweitzer"><category><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/></category><altlabel><altlabel>CMECS</altlabel><altlabel>CMECS</altlabel><altlabel>Coastal and Marine Ecological Classification Standard (CMECS)</altlabel><altlabel>Coastal and Marine Ecological Classification Standard (CMECS)</altlabel></altlabel></thesaurus><term thcode="62" code="BC-553" name="Freshwater Irregularly Flooded Tidal Lichen Zone" parent="BC-430" scope="Biotic Group: Tidal areas that are irregularly flooded (less often than daily) by tidal or non-tidal floods. ..."/><bt><term thcode="62" code="BC-430" name="Freshwater Tidal Lichens" parent="BC-393" scope="Biotic Subclass: Freshwater tidal areas dominated by salt-intolerant lichen species that form patches or visible patterns on the surface of the substrate. Freshwater lichen Biotic Groups are based on a modification of Gilbert and Giavarini (1997)."/><term thcode="62" code="BC-393" name="Moss and Lichen Communities" parent="BC-389" scope="Biotic Class: Tidal areas dominated by submerged or emergent mosses or lichens. ..."/><term thcode="62" code="BC-389" name="Benthic/Attached Biota" parent="BC-C002" scope="Biotic Setting: This biotic setting describes areas where biota lives on, in, or in close association with the seafloor or other substrates (e.g., pilings, buoys), extending down into the sediment to include the sub-surface layers of substrate that contain multi-cellular life. ..."/><term thcode="62" code="BC-C002" name="Biotic" parent="root"/><term thcode="62" code="root" name="CMECS" scope="Coastal and Marine Ecological Classification Standard: Category terms encompassing waters from the head of tide or inland incursion of ocean salinity to the splash zone of the coasts to the deepest portions of the oceans and the deep waters of the Great Lakes."/></bt></descriptor>