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SE Alaska Cumulative Yellow-Cedar Decline

Dates

Publication Date
Start Date
2012-08-02
End Date
2012-08-02

Summary

Data represent presence/absence for cedar decline occurrence. Cedar decline refers to the dying or decline of yellow-cedar (Chamaecyparis nootkatensis) forests in Southeast Alaska and is characterized by red or yellow foliage in trees currently dying, or by white-gray snags of old mortality. Mapped snags can be standing dead as long as eighty years. The data were collected via aerial sketch mapping techniques and recorded on 1:250,000 USGS base maps from 500-3000 foot above ground level(AGL) observations. Survey coverage has been most intense for forests adjacent to shorelines and waterways. Data are collected, refined and updated on an annual basis. This data represent not one year's mortality but the cumulative effect seen from the [...]

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Attached Files

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SEAK_yellow_cedar_decline.xml
Potential Metadata Source

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22.12 KB application/fgdc+xml

Purpose

The data were collected as an initial attempt to quantify the acreage affected by cedar decline. The data set gives general locations of cedar decline and provides land managers and researchers a starting point when considering the resource.
Regional overview of the dataset.
Regional overview of the dataset.

Map

Spatial Services

ArcGIS Mapping Service

Communities

  • LC MAP - Landscape Conservation Management and Analysis Portal
  • North Pacific Landscape Conservation Cooperative

Tags

Provenance

Data source
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Additional Information

ArcGIS REST Service Extension

boundingBox
maxY58.41749143893168
maxX-129.69508053782656
minX-136.47609527387695
minY54.6223211550148
urlhttp://seakgis03.alaska.edu/agsv10_rest/services/USFS/USFS_CumulativeYellowCedarDecline/MapServer

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