Research Data Leeds Repository

Citation

Moody, Catherine and Worrall, Fred (2021) DOC nutrient addition experiments. University of Leeds. [Dataset] https://doi.org/10.5518/1015

Dataset description

Peatlands are typically rich in labile dissolved and particulate organic matter (DOM and POM) but poor in nutrients; as these peatland waters flow through a catchment they mix with more nutrient-rich but organic matter (OM) poor waters. These new sources of nutrients may lead to increased OM degradation, driving further release of CO2 to the atmosphere. The aim of this study was to discover if the addition of nutrients changed the rates of peat-derived dissolved and particulate organic carbon (DOC and POC) degradation, or if the additional nutrients were incorporated into the OM structure. The DOM and POM extracted from a peatland stream was characterised at the beginning of the experiment, and after 70-hours and 10-days, from water with and without additional nutrients. Results showed adding nutrients to the water had no significant impact on the rate of degradation of DOC or POC over a 10 day period. There were significant differences in the N content and C:N ratios, as well as other composition variables, of the DOM in the treatments with additional nutrients showing that N was incorporated into the DOM structure, but that nutrient addition did not stimulate significant extra DOM or DOC loss. The N content of POM was not impacted, and isotope analysis, supported the conclusion that DOM turnover was occurring even if there was no net change in DOC concentration due to nutrient addition.

Keywords:	organic carbon; organic matter; peatland
Subjects:	F000 - Physical sciences > F700 - Science of aquatic & terrestrial environments
Divisions:	Faculty of Environment > School of Geography
Related resources:	Location Type https://doi.org/10.1029/2021JG006331 Publication https://eprints.whiterose.ac.uk/173246/ Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	01 Jul 2021 16:36
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/862
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Moody, Catherine https://orcid.org/0000-0002-0371-7416 University of Leeds https://ror.org/024mrxd33 ror Worrall, Fred https://orcid.org/0000-0002-4139-1330 Durham University https://ror.org/01v29qb04 ror Type of data: Dataset Publication date: 2021 Resource language: English Metadata language: English Publisher: University of Leeds Contact email: c.s.moody@leeds.ac.uk Last Modified: 09 Jul 2024 10:46

Files

Data

Water chemistry [39kB] Water chemistry [39kB] Water chemistry [39kB] Security: Anyone File name: Dataset_01_Water_Chem_C_Moody_F_Worrall_2021_DOC_nutrient_addition_experiments.xlsx Content type: Data Description: POC, DOC and ion concentrations (in mg/l) for all treatments, sample times and months. Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 39kB

DOM compostion data [22kB] DOM compostion data [22kB] DOM compostion data [22kB] Security: Anyone File name: Dataset_02_DOM_Comp_C_Moody_F_Worrall_2021_DOC_nutrient_addition_experiments.xlsx Content type: Data Description: Elemental, isotopic and finctional group composition of DOM samples Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 22kB

POM compostion data [16kB] POM compostion data [16kB] POM compostion data [16kB] Security: Anyone File name: Dataset_03_POM_Comp_C_Moody_F_Worrall_2021_DOC_nutrient_addition_experiments.xlsx Content type: Data Description: Elemental, isotopic and finctional group composition of POM samples Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 16kB