Filters: partyWithName: U.S. Geological Survey - ScienceBase (X) > Types: Collection (X)

Folder: ROOT ( Show direct descendants )

Location Folder Show Tree ROOT ScienceBase Catalog Users Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Beth A Middleton John L David Upper Midwest Environmental Sciences Center U.S. Geological Survey Wetland and Aquatic Research Center More... Categories Project (1) Tag Types Theme (1) Place (1) Harvest Set (1) Tag Schemes None (1) ISO 19115 Topic Category (1) Common geographic areas (1) USGS Thesaurus (1) Coastal and Marine Ecological Classification Standard (1) Alexandria Digital Library Feature Type Thesaurus (1) Marine Realms Information Bank (MRIB) keywords (1) View Results as: JSON ATOM CSV Browse Folder

Peat collapse and vegetation shift at Hickory Point This work captures a multi-year progression from 2013 to 2021 of change in the height of the topographic surface and freshwater status of the rooting zone that may indicate impending vegetation transition. Two Surface Elevation Tables (SETs) in a tidal Taxodium distichum swamp at Hickory Point State Forest near Pocomoke City, Maryland were used to collect data on the height of the topographic surface established with respect to a local vertical datum. Annual root production over time was measured by collecting data on ingrowth into mesh root bags. Root bags were collected at 5 set locations within the study area and analyzed to determine the weight in grams of new root production per meter cubed each year. This... Types: Collection; Tags: Chesapeake Bay, Forested Wetland, Hickory Point State Forest, Maryland, Pocomoke City, All tags... Pocomoke River, Relict Tidal Inlet, USGS Science Data Catalog (SDC), United States, biota, climate change, droughts, elevation, environment, freshwater ecosystems, freshwater swamp, global warming, inlandWaters, regime shift, relict forest, wetlands, Fewer tags 2010 Upper Mississippi River Restoration (UMRR) Program Land Cover Data: Mississippi & Illinois Rivers Technology doesn’t stand still and neither does the vegetation mapping program. With 9X9 film and film cameras becoming increasingly rare, the 2010 systemic aerial photo effort will use a digital mapping camera to collect 8”/pixel imagery above Lock & Dam (L&D) 13 and 16”/pixel imagery below L&D 13 and along the Illinois River floodplain. There are two main reasons for this distinction; 1) the floodplain above L&D 13 is narrower and contains a greater amount and diversity of aquatic vegetation, and 2) below L&D 13, the Upper Mississippi River is largely channelized, with less aquatic vegetation, and wider, leveed floodplains dominated by agricultural use. This holds true for much of the Illinois River as well... Categories: Project; Types: Collection