Sentences with phrase «microbial activity beneath»

Limited direct impacts of atmospheric CO2 on nitrogen - fixation have been found in soil biological crusts (Billings et al., 2003), but soil microbial activity beneath shrubs has been observed to increase, thus reducing plant - available nitrogen (Billings et al., 2002).

Not exact matches

«The temperature is still around 0 (Celsius), so microbial activity continues to take place, producing carbon and methane, but it's trapped beneath the surface ice.

However, the researchers would need to measure the microbial activity in wet sediments beneath the ice sheets to firm up their hypothesis, Siegert says.