Simulation of seasonal changes in microbial activity of maritime antarctic peat

1982 ◽  
Vol 14 (1) ◽  
pp. 1-12 ◽  
Author(s):  
D.D. Wynn-Williams
Keyword(s):  
Microbial Activity ◽  
Seasonal Changes ◽  
Maritime Antarctic

Seasonal changes in microbial activity in a semiarid soil after application of a high dose of different organic amendments

Geoderma ◽  
2013 ◽  
Vol 206 ◽  
pp. 40-48 ◽  
Author(s):  
Ignacio Jorge-Mardomingo ◽  
Pedro Soler-Rovira ◽  
Miguel Ángel Casermeiro ◽  
María Teresa de la Cruz ◽  
Alfredo Polo
Keyword(s):  
Microbial Activity ◽  
Seasonal Changes ◽  
Organic Amendments ◽  
High Dose

scholarly journals CO2-C losses and carbon quality of selected Maritime Antarctic soils

2012 ◽  
Vol 25 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Juliana Vanir De Souza Carvalho ◽  
Eduardo De Sá Mendonça ◽  
Newton La Scala ◽  
César Reis ◽  
Efrain Lázaro Reis ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Temperature ◽  
Soil Carbon ◽  
Humic Substances ◽  
Microbial Activity ◽  
Chemical Characteristics ◽  
Maritime Antarctic ◽  
Antarctic Soils ◽  
Humification Degree

AbstractPolar Regions are the most important soil carbon reservoirs on Earth. Monitoring soil carbon storage in a changing global climate context may indicate possible effects of climate change on terrestrial environments. In this regard, we need to understand the dynamics of soil organic matter in relation to its chemical characteristics. We evaluated the influence of chemical characteristics of humic substances on the process of soil organic matter mineralization in selected Maritime Antarctic soils. A laboratory assay was carried out with soils from five locations from King George Island. We determined the contents of total organic carbon, oxidizable carbon fractions of soil organic matter, and humic substances. Two in situ field experiments were carried out during two summers, in order to evaluate the CO2-C emissions in relation to soil temperature variations. The overall low amounts of soil organic matter in Maritime Antarctic soils have a low humification degree and reduced microbial activity. CO2-C emissions showed significant exponential relationship with temperature, suggesting a sharp increase in CO2-C emissions with a warming scenario, and Q10 values (the percentage increase in emission for a 10°C increase in soil temperature) were higher than values reported from elsewhere. The sensitivity of the CO2-C emission in relation to temperature was significantly correlated with the humification degree of soil organic matter and microbial activity for Antarctic soils.

Observations on microbial activity in a seasonally anoxic, nutrient-enriched maritime Antarctic lake

Polar Biology ◽  
1988 ◽  
Vol 8 (4) ◽  
pp. 311-318 ◽  
Author(s):  
J. C. Ellis-Evans ◽  
M. W. Sanders
Keyword(s):  
Microbial Activity ◽  
Maritime Antarctic ◽  
Antarctic Lake

Lean and keen: Microbial activity in soils from the Maritime Antarctic

2020 ◽  
Vol 72 (1) ◽  
pp. 413-431 ◽  
Author(s):  
David W. Hopkins ◽  
Paul G. Dennis ◽  
Steven P. Rushton ◽  
Kevin K. Newsham ◽  
Tony G. O'Donnell
Keyword(s):  
Microbial Activity ◽  
Maritime Antarctic

Spreading the Word: Seasonal Changes Mean New Opportunities for Media Coverage

ASHA Leader ◽  
2013 ◽  
Vol 18 (7) ◽  
Keyword(s):  
Media Coverage ◽  
Seasonal Changes ◽  
Swimming Pools

Summer kicking into high gear conjures images of swimming pools and barbeques. But before you book your beach house for the weekend, think about what the changing seasons can mean for you professionally.

Seasonal changes in a ultraviolet structural colour signal in blue tits, Parus caeruleus

2002 ◽  
Vol 76 (2) ◽  
pp. 237-245 ◽  
Author(s):  
JONAS ORNBORG ◽  
STAFFAN ANDERSSON ◽  
SIMON C. GRIFFITH ◽  
BEN C. SHELDON
Keyword(s):  
Seasonal Changes ◽  
Parus Caeruleus ◽  
Structural Colour ◽  
Blue Tits ◽  
Colour Signal

Seasonal changes in nitrogen fractions of Pachysandra terminalis, a forest evergreen chamaephyte

1990 ◽  
Vol 79 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Fumio Yoshie ◽  
Hirohito Arai ◽  
Hideaki Nakashima ◽  
Shoichi Kawano
Keyword(s):  
Seasonal Changes ◽  
Nitrogen Fractions
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