Yellow-Cedar Decline Cumulative Survey 1998

This data set is a polygon representation that estimates the geographic area in which cedar decline is occurring. Cedar Decline refers to the dying or decline of yellow-cedar (Chamaecyparis nootkatensis) forests of southeast Alaska and is characterized by red foilage 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 was collected via aerial sketch mapping techniques and recorded on 1:250,000 from 500-3000 foot above ground level(AGL). Survey coverage has been most intense for forests adjacent to shorelines and waterways. Data is collected, refined and updated on an annual basis.

Data and Resources

Field Value
access_constraints ["Use Constraints: It is not recommended the data be used at a scale larger than 1:250000. Any hardcopies or published datasets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by Alaska Department of Natural Resources.", "Access Constraints: To ensure distribution of the most current public information, please refer requests for data or products to the Alaska Department of Natural Resources, Information Resource Management."]
bbox-east-long 180.000000
bbox-north-lat 76.786171
bbox-south-lat 42.509211
bbox-west-long -180.000000
contact-email dnr.gispub@alaska.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "1998-09-15"}]
frequency-of-update annually
licence ["\nThe State of Alaska makes no express or implied warranties (including warranties of merchantability\nand fitness) with respect to the character, function, or capabilities of the electronic services\nor products or their appropriateness for any users purposes. In no event will the State of Alaska\nbe liable for any incidental, indirect, special, consequential or other damages suffered by the\nuser or any other person or entity whether from the use of the electronic services or products,\nany failure thereof or otherwise, and in no event will the State of Alaska s liability to the\nrequestor or anyone else exceed the fee paid for the electronic service or product.\n"]
metadata-date 2011-05-31
metadata-language eng; USA
metadata_type geospatial
progress planned
resource-type dataset
responsible-party [{"name": "AK Department of Natural Resources - Information Resource Management", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-180.0, 42.509211], [180.0, 42.509211], [180.0, 76.786171], [-180.0, 76.786171], [-180.0, 42.509211]]]}
spatial_harvester true
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • aerial
  • alaska
  • alexander-archipelago
  • amerigeo
  • amerigeoss
  • cedar
  • ckan
  • damage
  • forest
  • geo
  • geoss
  • inside-passage
  • national
  • north-america
  • southeast
  • survey
  • tongass
  • united-states
  • yellow-cedar
isopen False
metadata_created 2025-11-22T04:24:30.661808
metadata_modified 2025-11-22T04:24:30.661813
notes This data set is a polygon representation that estimates the geographic area in which cedar decline is occurring. Cedar Decline refers to the dying or decline of yellow-cedar (Chamaecyparis nootkatensis) forests of southeast Alaska and is characterized by red foilage 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 was collected via aerial sketch mapping techniques and recorded on 1:250,000 from 500-3000 foot above ground level(AGL). Survey coverage has been most intense for forests adjacent to shorelines and waterways. Data is collected, refined and updated on an annual basis.
num_resources 2
num_tags 19
title Yellow-Cedar Decline Cumulative Survey 1998