|
CALM SITE U40b |
TANADA MUSKEG Wrangell – St. Elias National Park
and Preserve, Alaska |
|
Site code |
U40B |
|
Site name |
Mentasta Fen |
|
CAPS I Metadata form |
NA |
|
CAPS II Metadata form |
NA |
|
Responsible for data submission |
Trey Simmons |
|
Email Address |
“Trey_Simmons”-at-“nps.gov”
|
|
Institution/Organization |
NPS Central Alaska Inventory and Monitoring Network |
|
Location description |
Alaska, Wrangell – St. Elias National Park and
Preserve |
|
Location Lat. |
N 62° 31.879’ |
|
Location Lon. |
W143° 21.707’ |
|
Elevation avg. (m) |
968 |
|
Methods Grid |
100 |
|
Methods Other |
Air
Temperature, Soil temperature |
|
Landscape Description |
Valley toe-slope to valley bottom |
|
Vegetation /Classification |
boreal lowland tussock – scrub bog |
|
Soils (or Material) |
organic-rich soils overlying glacial deposits, glaciofluvial outwash, and lacustrine deposits |
|
Thaw depth
measurements (year started)
|
2009 |
|
Air temp.
measurements (year started) |
2009 |
|
Snow cover
measurements (year started) |
NA |
|
soil temp. measurements (year started) |
2009 |
|
soil
moisture measurements (year started) |
2009 |
|
general
description of soil moisture (dry, moist, wet, saturated) |
NA |
|
soil texture:
if non organic describe texture, if organic indicate thickness of organic
layer (cm) |
Moderate thickness organic-rich horizon and peat
overlying lacustrine clay, |
DESCRIPTION OF AREA CONTAINING SITE:
Valley
toe-slope to valley bottom boreal lowlands with organic-rich soils overlying
glacial deposits, glaciofluvial outwash, and lacustrine deposits (Ecotype: boreal lowland tussack – scrub bog)
SOIL DESCRIPTION: (predominant texture, i.e.,
‘sand’, ‘gravel’, ‘peat’, etc.): Typic Historthels, Terric Hemistels, Typic Aquorthels, Typic
Fibristels.
SAMPLING DESIGN AND METHOD:
1 ha grid consists of a square array
of surveyed permanent stakes separated by 10 m, yielding an 11 × 11 array
of sampling nodes on each grid. Thaw depth and snow sampling was conducted
twice by manual probing at each stake. The two values for each sampling point
are averaged, yielding a maximum of 121 data points per grid per probing date.
The active layer was not measured at locations where grid points intersect
rocks or deep water.
4-channel temperature loggers (HOBO U12 with HOBO TMC6-HD temperature
sensors) installed to 10, 50, 100, 150 cm depth logging at 4 hr intervals. Shallow well installed with pressure
transducer (HOBO U20-001) to record water level and temperature at 4 hr
interval.
REFERENCES:
Only thaw depth data determined by
mechanical probing is reported on CALM website. For additional data contact
site investigators directly