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USFS Logo Research Data Archive
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35 year old alder stand with spruce-hemlock understory. In old cutting area on Helm Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
angiospremae:dicotyledoneae
Location: Alaska; Helm Bay
Description: 35 year old alder stand with spruce-hemlock understory. In old cutting area on Helm Bay.
Date: 7/12/1957

James determining total age of conifer understory at Helm Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
angiospremae:dicotyledoneae
Location: Alaska; Helm Bay
Description: James determining total age of conifer understory at Helm Bay.
Date: 7/12/1957

Tsuga heteropylla. Two-year-old hemlock seedlings removed from Area 3, plot 2 of seed bed study.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae: natural regeneration: preparatory measures for securing natural regeneration
Location: Alaska
Description: Tsuga heteropylla. Two-year-old hemlock seedlings removed from Area 3, plot 2 of seed bed study.
Date: 5/1957