Photograph-based seed cone counts of white spruce (Picea glauca) trees from treeline field sites across the Brooks Range, Alaska 2019-2022
收藏NSF Arctic Data Center2023-01-01 更新2026-05-11 收录
下载链接：
https://arcticdata.io/catalog/view/doi:10.18739/A2NS0M02D
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资源简介：
Photograph-derived counts of seed cones on white spruce (Picea glauca) trees at elevational (alpine) & lower (arctic) treelines at 19 research sites along a west-east gradient in Alaska's Brooks Range. Photographs are from a single angle and thus represent a "cone production index" rather than a complete count of all the cones on a tree. The general purpose of the sampling was to examine west-east variation in white spruce growth and reproduction responses to changes in climatic gradients and ongoing climate change.
提供机构：
Alaska Pacific University; University of Alaska Anchorage; Amherst College
创建时间：
2023-01-01
