A synoptic survey of microbial respiration, organic matter decomposition, and carbon efflux in U.S. streams and rivers.

ABSTRACT: We analyzed ecoenzyme activities related to organic matter processing in 1879 streams and rivers across the continental U.S. as part of the USEPA's National Rivers and Streams Assessment. Ecoenzymatic stoichiometry was used to construct models for carbon use efficiency (CUE) and decomposition (-k). Microbial respiration (R_m) was estimated from sediment organic carbon stocks, CUE and -k. The streams and rivers were classified by size (headwaters: 1^st-order; streams: 2^nd-3^rd order; small rivers: 4^th-5^th order; big rivers 6^th-7^th order; and great rivers ≥ 8^th order) and condition class (least, intermediate and most disturbed), and grouped into nine ecoregions. There were ecoregion,

SUBMITTER: Hill BH 

PROVIDER: S-EPMC6178839 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature