Ueyama, Masahito

27 items:

Latitudinal gradient of spruce forest understory and tundra phenology in Alaska as observed from satellite and ground-based data The latitudinal gradient of the start of the growing season (SOS) and the end of the growing season (EOS) were quantified in Alaska (61°N to 71°N) using satellite-based and ground-based datasets. The Alaskan evergreen needleleaf forests are sparse and the understory vegetation has a substantial impact on the satellite signal. We evaluated SOS and EOS of understory and tundra vegetation using time-lapse camera images. From the comparison of three SOS algorithms for determining SOS from two satellite datasets (SPOT-VEGETATION and Terra-MODIS), we found that the satellite-based SOS timing was consistent with the leaf emergence of the forest understory and tundra vegetation. The ensemble average of SOS over all satellite... Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Baseline 1-High resolution land cover imaging, Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems
Response of the carbon cycle in sub-arctic black spruce forests to climate change: Reduction of a carbon sink related to the sensitivity of heterotrophic respiration [electronic resource] Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: P2-Changes in Plant and Animal Species Due to Climate Change
Response of the carbon cycle in sub-arctic black spruce forests to climate change: Reduction of a carbon sink related to the sensitivity of heterotrophic respiration [electronic resource] Categories: Publication; Types: Citation; Tags: P2-Changes in Plant and Animal Species Due to Climate Change
Does summer warming reduce black spruce productivity in interior Alaska? Categories: Publication; Types: Citation; Tags: M1-Flora, P3b-Vegatation Productivity Changes Due to Temperature change
Growing season and spatial variations of carbon fluxes of Arctic and boreal ecosystems in Alaska (USA) Categories: Publication; Types: Citation; Tags: Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems

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