Effects of experimental temperature elevation on high-arctic soil microarthropod populations

Polar Biology ◽  
1996 ◽  
Vol 16 (2) ◽  
pp. 147-153 ◽  
Author(s):  
S. J. Coulson ◽  
I. D. Hodkinson ◽  
N. R. Webb ◽  
W. Block ◽  
J. S. Bale ◽  
...  
Keyword(s):  
High Arctic ◽  
Experimental Temperature ◽  
Temperature Elevation ◽  
Arctic Soil ◽  
Soil Microarthropod

Effects of experimental temperature elevation on high-arctic soil microarthropod populations

Polar Biology ◽  
1996 ◽  
Vol 16 (2) ◽  
pp. 147-153 ◽  
Author(s):  
S. J. Coulson ◽  
I. D. Hodkinson ◽  
C. Wooley ◽  
N. R. Webb ◽  
W. Block ◽  
...  
Keyword(s):  
High Arctic ◽  
Experimental Temperature ◽  
Temperature Elevation ◽  
Arctic Soil ◽  
Soil Microarthropod

A High Arctic soil ecosystem resists long-term environmental manipulations

2011 ◽  
Vol 17 (10) ◽  
pp. 3187-3194 ◽  
Author(s):  
ERIC G. LAMB ◽  
SUKKYUN HAN ◽  
BRIAN D. LANOIL ◽  
GREG H. R. HENRY ◽  
MARTIN E. BRUMMELL ◽  
...  
Keyword(s):  
High Arctic ◽  
Soil Ecosystem ◽  
Arctic Soil

scholarly journals Effects of Field Warming on a High Arctic Soil Bacterial Community:A Metagenomic Analysis

2018 ◽  
Vol 115 (9) ◽  
pp. 1697
Author(s):  
P. P. J. Lim ◽  
K. K. Newsham ◽  
P. Convey ◽  
H. M. Gan ◽  
W. C. Yew ◽  
...  
Keyword(s):  
High Arctic ◽  
Metagenomic Analysis ◽  
Arctic Soil ◽  
Soil Bacterial

Amorphous Si and Ca affect microbial community structure in arctic permafrost soils

2021 ◽  
Author(s):  
Peter Stimmler ◽  
Jörg Schaller
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
High Arctic ◽  
The Arctic ◽  
Gram Positive Bacteria ◽  
Arctic Soil ◽  
Permafrost Soils ◽  
Low Arctic ◽  
Amorphous Si

<p>Arctic warming affects the permafrost soils in different ways. Increase soil temperature and thawing of deeper horizons modifies the release of greenhouse gases (GHG) by release of nutrients. A lot of research was done about nutrient cycling of C, N and P, but little is known about the influence of Ca and amorphous Si (ASi) on this elements. To show the potential of this two elements in the Arctic systems, we analysed the effect of ASi and Ca on microbial community structure with next generation sequencing and qPCR. We analyzed fungal and bacterial community structure in two different soils from Greenland after incubation with different levels of ASi and Ca. Microbial community reacted differently in the high Arctic (Peary Land) and low Arctic soil (Disko Island) to changing concentrations of ASi and Ca. We found a significant change with linear correlation from gram-negative to gram-positive bacteria classes with increasing Ca and/or ASi levels. Further, abundance of Ascomycota and Basidiomycota changed. We postulate this changes as an important factor for changed GHG production as potential response to modified nutrient availability.</p>

High‐Arctic Soil CO2 and CH4 Production Controlled by Temperature, Water, Freezing and Snow

2008 ◽  
pp. 441-472 ◽  
Author(s):  
Bo Elberling ◽  
Claus Nordstrøm ◽  
Louise Grøndahl ◽  
Henrik Søgaard ◽  
Thomas Friborg ◽  
...  
Keyword(s):  
High Arctic ◽  
Soil Co2 ◽  
Ch4 Production ◽  
Arctic Soil ◽  
Temperature Water

Optimum liquid density in separation of the physically uncomplexed organic matter in Arctic soils

2011 ◽  
Vol 91 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Maxime Charles Paré ◽  
Angela Bedard-Haughn
Keyword(s):  
Organic Matter ◽  
High Arctic ◽  
Liquid Density ◽  
Density Fractionation ◽  
Arctic Soils ◽  
Arctic Soil ◽  
Low Arctic ◽  
The Difference ◽  
Heavy Fractions ◽  
The Right

Paré, M. C. and Bedard-Haughn, A. 2011. Optimum liquid density in separation of the physically uncomplexed organic matter in Arctic soils. Can. J. Soil Sci. 91: 65–68. Using an appropriate density to separate the soil light fraction (LF) and heavy fraction (HF) is an important aspect of the density fractionation technique. The effect of liquid density when separating the physically uncomplexed Arctic soil organic matter (SOM) was tested on three Arctic sites: High-Arctic, Low-Arctic, and Sub-Arctic. Our results showed that selecting the right density to use for Arctic soils is not unequivocal. Nevertheless, based on these two criteria: (1) the difference between the C:N values of the LF and HF needs to be as large as possible, and (2) the C:N value of the whole soil needs to be different from the C:N values of the LF and HF, the optimum density for all of our Arctic sites was between 1.49 and 1.55 g mL−1. We concluded that 1.55g mL−1 was the conservative optimum liquid density to use to separate Arctic SOM light and heavy fractions.

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