No evidence of aquatic priming effects in hyporheic zone microcosms.

ABSTRACT: The priming effect refers to quantitative changes in microbial decomposition of recalcitrant organic matter upon addition of labile organic matter and is a phenomenon that mainly has been reported and debated in soil science. Recently, priming effects have been indicated in aquatic ecosystems and have received attention due to the potential significance for ecosystem carbon budgets. Headwater stream biofilms, which are important degraders of both allochthonous, presumably recalcitrant, organic matter and labile autochthonous organic matter, may be sites where priming effects are important in aquatic environments. We have experimentally tested for priming effects in stream biofilms within microcosms mimicking the stream hyporheic zone. A (13)C labeled model allochthonous carbon source was u

SUBMITTER: Bengtsson MM 

PROVIDER: S-EPMC4046132 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature