Filters: Tags: Biodiversity (X) > Categories: Data (X)
123 results (13ms)
Filters
Date Range
Extensions
Types
Contacts
Categories Tag Types
|
Fifty-one tidal marsh sites across five regions (sub-embayments) were surveyed in the Delta, Suisun Bay, San Pablo Bay, central San Francisco Bay, and South San Francisco Bay. Vegetation surveys spanned ten years, from July 2008 to January 2018. A total of 5,112 plots were surveyed. Plots were positioned on transects along an elevation gradient and evenly distributed across each site, where possible, to capture spatial variability along elevation and distance gradients. At each plot, percent cover of all plant species, bare ground, and litter as well as average height was visually assessed within a 0.25 m2 quadrat. Total plant cover in a plot could exceed 100 percent due to vegetation layering. Bare ground and litter...
Categories: Data;
Tags: Botany,
Ecology,
Ecology,
Emergent Tidal Marsh,
Freshwater and Brackish Tidal Aquatic Vegetation,
Boreal Partners in Flight developed the Alaska Landbird Monitoring Survey (ALMS) primarily to monitor breeding populations of landbirds in the vast off-road areas of Alaska in conjunction with data collected from the roadside North American Breeding Bird Survey (BBS). ALMS is a collaborative program in which agencies and other entities conduct standardized surveys of breeding birds and their habitats on the lands they manage and then provide the data to the U.S. Geological Survey Alaska Science Center for analysis and archiving. The ALMS monitoring program comprises a set of survey blocks that have been selected in a stratified-random design primarily across state and Federal natural resource lands in Alaska with...
|
|