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Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest

The number of spots to monitor to evaluate soil respiration (R(s)) is often chosen on an empirical or conventional basis. To obtain an insight into the necessary number of spots to account for R(s) variability in a Mediterranean pine-dominated mixed forest, we measured R(s) all year long on sixteen...

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Autores principales: Pantani, Ottorino-Luca, Fioravanti, Fabrizio, Stefanini, Federico M., Berni, Rossella, Certini, Giacomo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000697/
https://www.ncbi.nlm.nih.gov/pubmed/32019975
http://dx.doi.org/10.1038/s41598-020-58664-6
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author Pantani, Ottorino-Luca
Fioravanti, Fabrizio
Stefanini, Federico M.
Berni, Rossella
Certini, Giacomo
author_facet Pantani, Ottorino-Luca
Fioravanti, Fabrizio
Stefanini, Federico M.
Berni, Rossella
Certini, Giacomo
author_sort Pantani, Ottorino-Luca
collection PubMed
description The number of spots to monitor to evaluate soil respiration (R(s)) is often chosen on an empirical or conventional basis. To obtain an insight into the necessary number of spots to account for R(s) variability in a Mediterranean pine-dominated mixed forest, we measured R(s) all year long on sixteen dates with a portable gas-analyser in 50 spots per date within an area 1/3 ha wide. Linear mixed-effects models with soil temperature and litter moisture as descriptors, were fitted to the collected data and then evaluated in a Monte Carlo simulation on a progressively decreasing number of spots to identify the minimum number required to estimate R(s) with a given confidence interval. We found that monitoring less than 14 spots would have resulted in a 10% probability of not fitting the model, while monitoring 20 spots would have reduced the same probability to about 5% and was the best compromise between field efforts and quality of the results. A simple rainfall index functional to select sampling dates during the summer drought is proposed.
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spelling pubmed-70006972020-02-11 Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest Pantani, Ottorino-Luca Fioravanti, Fabrizio Stefanini, Federico M. Berni, Rossella Certini, Giacomo Sci Rep Article The number of spots to monitor to evaluate soil respiration (R(s)) is often chosen on an empirical or conventional basis. To obtain an insight into the necessary number of spots to account for R(s) variability in a Mediterranean pine-dominated mixed forest, we measured R(s) all year long on sixteen dates with a portable gas-analyser in 50 spots per date within an area 1/3 ha wide. Linear mixed-effects models with soil temperature and litter moisture as descriptors, were fitted to the collected data and then evaluated in a Monte Carlo simulation on a progressively decreasing number of spots to identify the minimum number required to estimate R(s) with a given confidence interval. We found that monitoring less than 14 spots would have resulted in a 10% probability of not fitting the model, while monitoring 20 spots would have reduced the same probability to about 5% and was the best compromise between field efforts and quality of the results. A simple rainfall index functional to select sampling dates during the summer drought is proposed. Nature Publishing Group UK 2020-02-04 /pmc/articles/PMC7000697/ /pubmed/32019975 http://dx.doi.org/10.1038/s41598-020-58664-6 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Pantani, Ottorino-Luca
Fioravanti, Fabrizio
Stefanini, Federico M.
Berni, Rossella
Certini, Giacomo
Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title_full Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title_fullStr Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title_full_unstemmed Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title_short Accounting for soil respiration variability – Case study in a Mediterranean pine-dominated forest
title_sort accounting for soil respiration variability – case study in a mediterranean pine-dominated forest
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000697/
https://www.ncbi.nlm.nih.gov/pubmed/32019975
http://dx.doi.org/10.1038/s41598-020-58664-6
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