Skip to main content
Advanced Search

Filters: Types: Map Service (X)

Folders: ROOT > ScienceBase Catalog > US Fish and Wildlife Service (USFWS) > Programs > Migratory Birds > Region 7 U.S. Fish and Wildlife Service Migratory Bird Management > USFWS MBM Alaska Quantitative Ecology and Science Support Program > Arctic Coastal Plain Waterfowl and Waterbird Spatial and Temporal Trends ( Show all descendants )

5 results (26ms)   

Location

Folder
ROOT
_ScienceBase Catalog
__US Fish and Wildlife Service (USFWS)
___Programs
____Migratory Birds
_____Region 7 U.S. Fish and Wildlife Service Migratory Bird Management
______USFWS MBM Alaska Quantitative Ecology and Science Support Program
_______Arctic Coastal Plain Waterfowl and Waterbird Spatial and Temporal Trends
View Results as: JSON ATOM CSV
thumbnail
This is an SQLite GeoPackage simple feature linestring vector database of the Arctic Coastal Plain survey flow tracks in coordinate reference system EPSG:4326. There is one layer for each year 2007 to 2023. The field”Year” gives the calendar year that the transects were flown, “Stratum” gives the strata name, “NavTransect” gives the transect identifier used for navigation by the pilot (this is not necessarily the same as the design transect), and the “geom” field gives the simple feature Well Known Text geometry data of the approximate flight path recreated from bird observations. See the GitHub site https://github.com/USFWS/ACP-Mapping for more information. This product was produced from the file ACPmapping.R and...
thumbnail
This is an SQLite GeoPackage simple feature vector database of spectacled eider relative densities predicted from a generalized additive model across the Arctic Coastal Plain. These density are “relative” because year- or observer-specific detection is not incorporated. However, the estimation model include observer as a random effect and predictions are made after removing the effect of observer (i.e., at the average observer). Each year is a separate layer named by year. Predictions are gridded into cells 750m per side but are trimmed to the ACP survey area, so some cells are smaller. For each year, the variable ‘fit’ gives the expected density, ‘se.fit’ gives the standard error of the fit, ‘Sample.Label’ is an...
thumbnail
This is an SQLite GeoPackage simple feature multilinestring vector database of the Arctic Coastal Plain survey transects in coordinate reference system EPSG:4326. There is one layer for each year 2007 to 2023, although in general the there is a four panel rotation that varies each year. All years are provided because implementation of the panel design varied through time. The field”Year” given the calendar year that the transects were implemented, “Stratum” gives the strata name, “Transect” gives the transect identifier, and the “geom” field gives the simple feature Well Known Text geometry data. Note that these transect are the idealized design and are not an exact record of the true flight path or survey effort....
thumbnail
This is an SQLite GeoPackage simple feature multipolygon vector database of the Arctic Coastal Plain survey area transect density strata. There is only one layer that gives the strata boundaries in EPSG:4326. The field “Statra” gives the strata name and the “geom” field gives the simple feature Well Known Text geometry data. See the GitHub site for more information. This product was produced from the file ACPmapping.R and is simplified from the original strata files distributed at https://www.sciencebase.gov/catalog/item/65419a58d34ee4b6e05bd001.
thumbnail
The code repository for the quality controll processing, data creation, modelling, and mapping or trend estimation is at https://github.com/USFWS/ACP-Mapping. The full history of the quality control process and issues is documented in R code file in this repository. Please report any addition errors to https://github.com/USFWS/ACP-Mapping/issues and follow update of this repositiry to keep track of new errors and updates to data sets, maps, or trend estimates.
    map background search result map search result map Arctic Coastal Plain Aerial Survey Design Strata Arctic Coastal Plain Aerial Survey Design Transects Arctic Coastal Plain Aerial Survey Approximate Fight Lines Arctic Coastal Plain Aerial Survey Spectacled Eider Density Estimates, 2007-2023 Arctic Coastal Plain Aerial Survey Github Code Repository Arctic Coastal Plain Aerial Survey Design Strata Arctic Coastal Plain Aerial Survey Design Transects Arctic Coastal Plain Aerial Survey Approximate Fight Lines Arctic Coastal Plain Aerial Survey Spectacled Eider Density Estimates, 2007-2023 Arctic Coastal Plain Aerial Survey Github Code Repository