| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by harmful plants virus diseases forest weeds |
| Location: | Alaska |
| Description: | Lower portion of slope completely dominated by 8-10 yr. old Alder Brush. At break in slope Alder was thinner but spruce & hemlock reproduction very sparse. Most young spruce had been browsed back by porcupine or deer. |
| Date: | 7/12/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska; Helm Bay |
| Description: | 12" spruce completely girdled at base. Helm Bay, Cleveland Peninsula. |
| Date: | 7/12/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska; Helm Bay |
| Description: | Extensive chewing around base of 38" hemlock (McGregor). Hel Bay, Cleveland Peninsula. |
| Date: | 7/12/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska; Helm Bay |
| Description: | Gnawed patch near base of spruce. Helm Bay, Cleveland Peninsula. |
| Date: | 7/12/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska; Helm Bay |
| Description: | Patches of bark removed in top of 14" spruce, Helm Bay, Cleveland Peninsula. |
| Date: | 7/12/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals insects megaloptera |
| Location: | Alaska; Porcupine River |
| Description: | Porcupine River, Alaska. Bank cutting-dislodged w. spruce become breeding material for lps interpuctus. |
| Date: | 6/22/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals insects megaloptera |
| Location: | Alaska; Porcupine River |
| Description: | Porcupine River, Alaska. Under cutting bank and dislodged w. spruce trees serve as breeding material for lps interpuctus. |
| Date: | 6/22/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska |
| Description: | Kresien & Ravensborg laying out 1-acre plot for continuous census of small mammals. Stakes are being placed on grid established by strings. 100 stake-marked trapping sites per acre. |
| Date: | 5/18/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection forest fires predisposing factors and causes fire danger fire behaviour weather |
| Location: | Alaska; Annette Island |
| Description: | Fire weather Bureau, first order station. Annette Island AFRC fuel moisture sticks are exposed on wire rack immediately behind right hand tower leg. |
| Date: | 4/29/1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection damage by animals mammals wild mammals |
| Location: | Alaska; Prince of Wales Island; Maybeso Valley |
| Description: | Maybeso clear cut. |
| Date: | 1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection injuries from inorganic agencies (excluding fire) electrical and cosmic influences lightning |
| Location: | Alaska; Prince of Wales Island; Harris River |
| Description: | Hot spot at base of live cull. Note large pile of green limbs at base shattered from bole by lightning. At mouth of Harris River. |
| Date: | 1957 |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection injuries from inorganic agencies (excluding fire) electrical and cosmic influences lightning |
| Location: | Alaska; Prince of Wales Island; Harris River |
| Description: | Live cull hemlock struck by lightning during thunder storm, 1957. Burning in tip when discovered following morning. At mouth of Harris River. |
| Date: | 1957 |