Philip E. Higuera, Melissa L. Chipman, Jennifer L. Barnes, Michael A. Urban, and Feng Sheng Hu. 2011. Variability of tundra fire regimes in Arctic Alaska: millennial-scale patterns and ecological implications. Ecological Applications 21:3211–3226.


Supplement

Pollen counts for the past 3000 years for Raven, Uchugrak, Poktovik, and Little Isac lakes.
Ecological Archives
A021-144-S4
.

Copyright


Authors
File list (downloads)
Description


Author(s)

Philip E. Higuera
College of Natural Resources
Box 441133
University of Idaho
Moscow, ID 83844-1133
USA
E-mail: phiguera@uidaho.edu

Melissa L. Chipman
Department of Plant Biology
University of Illinois
505 South Goodwin Avenue
Urbana, IL 61801
USA

Jennifer L. Barnes
National Park Service
4175 Geist Road
Fairbanks, AK 997009
USA

Michael A. Urban
Department of Plant Biology
University of Illinois
505 South Goodwin Avenue
Urbana, IL 61801
USA


File list

LI07_pollenCounts.csv
PO07_pollenCounts.csv
RA07_pollenCounts.csv
UC07_pollenCounts.csv

Description

File names reference site codes, where "XX" is a place holder for the site codes for Raven (RA), Uchugrak (UC), Poktovik (PO) and Little Isac (LI) lakes, all collected in 2007. Each file contains information on sample depth, sample age, tracers added, tracer concentration, and tracers counted (for calculating pollen accumulation rates). Rows = samples. Columns = sample identification OR taxon, as follows, with all units as counts, unless otherwise indicated below:

finalTopCm [cm]
calYrBP [cal. yr BP]
sedVol [cm3]
tracersAdded [count]
meanTracer [count] Mean number of tracers per tablet.
stdTracer [count] Standard deviation for mean number of tracers per table.
tracersCounted [count] Number of tracers counted in sample.
AlnusIncana
AlnusViridis
Alnus
Betula
Picea
Populus
Salix
Apiaceae
Artemsia
Brassicaceae
Caryophyllaceae
Chenopodiaceae
Cyperaceae
Drosera
Epilobium
Ericaceae
Fabaceae
Liguliflorae
Lilliaceae
Poaceae
Polemoniaceae
Polygonaceae
Ranunulaccea
Rosaceae
Saussurea
Saxifragaceae
Scriohaleriaceae
Tubuliflorae
Urticaceae
Calitriche
Equisetum
Isoetes
Myriophyllum
Nymphaea
Pediastrum
Potomogetan
Sparganium
Typha
Sphagnum
Lycopodium
Botryococcus
MonoleteSpore
TrileteSpore
Degraded
Aquatic Sum [count] Total aquatic grains counted.
Terrestrial Sum [count] Total terrestrial grains counted.

Missing values: none.

Checksum values:

LI07_pollenCounts.csv: 9 rows (with headers), 53 columns
Column 1 (final depth top (cm)): 259.25
Column 2 (cal BP): 13896.17
Column 7 (TRACERS): 469
Column 10 (Alnus): 534
Column 20 (Cyperaceae): 510
Column 30 (Ranunculaceae): 10
Column 40 (Myriophyllum): 11
Column 50 (trilete spore): 9
PO07_pollenCounts.csv: 10 rows (with headers), 53 columns
Column 1 (final depth top (cm)): 282.84
Column 2 (cal BP): 11462.43
Column 7 (TRACERS): 531
Column 10 (Alnus): 866
Column 20 (Cyperaceae): 569
Column 30 (Ranunculaceae): 3
Column 40 (Myriophyllum): 14
Column 50 (trilete spore): 7
RA07_pollenCounts.csv: 10 rows (with headers), 53 columns
Column 1 (final depth top (cm)): 405.91
Column 2 (cal BP): 14434.45
Column 7 (TRACERS): 1199
Column 10 (Alnus): 757
Column 20 (Cyperaceae): 624
Column 30 (Ranunculaceae): 12
Column 40 (Myriophyllum): 10
Column 50 (trilete spore): 22
UC07_pollenCounts.csv: 16 rows (with headers), 53 columns
Column 1 (final depth top (cm)): 890.5
Column 2 (cal BP): 23349.75
Column 7 (TRACERS): 551
Column 10 (Alnus): 1484
Column 20 (Cyperaceae): 1116
Column 30 (Ranunculaceae): 8
Column 40 (Myriophyllum): 17
Column 50 (trilete spore): 57