Glasshouse vs field experiments do they yield ecologically similar results for assessing N impacts on peat mosses?

Glasshouse vs field experiments : do they yield ecologically similar results for assessing N impacts on peat mosses?

© 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 195(2012), 2 vom: 04. Juli, Seite 408-418
1. Verfasser: Limpens, J (VerfasserIn)
Weitere Verfasser: Granath, G, Aerts, R, Heijmans, M M P D, Sheppard, L J, Bragazza, L, Williams, B L, Rydin, H, Bubier, J, Moore, T, Rochefort, L, Mitchell, E A D, Buttler, A, van den Berg, L J L, Gunnarsson, U, Francez, A-J, Gerdol, R, Thormann, M, Grosvernier, P, Wiedermann, M M, Nilsson, M B, Hoosbeek, M R, Bayley, S, Nordbakken, J-F, Paulissen, M P C P, Hotes, S, Breeuwer, A, Ilomets, M, Tomassen, H B M, Leith, I, Xu, B
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Comparative Study Journal Article Nitrogen N762921K75
Beschreibung
Zusammenfassung:© 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.
• Peat bogs have accumulated more atmospheric carbon (C) than any other terrestrial ecosystem today. Most of this C is associated with peat moss (Sphagnum) litter. Atmospheric nitrogen (N) deposition can decrease Sphagnum production, compromising the C sequestration capacity of peat bogs. The mechanisms underlying the reduced production are uncertain, necessitating multifactorial experiments. • We investigated whether glasshouse experiments are reliable proxies for field experiments for assessing interactions between N deposition and environment as controls on Sphagnum N concentration and production. We performed a meta-analysis over 115 glasshouse experiments and 107 field experiments. • We found that glasshouse and field experiments gave similar qualitative and quantitative estimates of changes in Sphagnum N concentration in response to N application. However, glasshouse-based estimates of changes in production--even qualitative assessments-- diverged from field experiments owing to a stronger N effect on production response in absence of vascular plants in the glasshouse, and a weaker N effect on production response in presence of vascular plants compared to field experiments. • Thus, although we need glasshouse experiments to study how interacting environmental factors affect the response of Sphagnum to increased N deposition, we need field experiments to properly quantify these effects
Beschreibung:Date Completed 16.10.2012
Date Revised 16.04.2021
published: Print-Electronic
CommentIn: New Phytol. 2012 Jul;195(2):279-81. - PMID 22702404
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/j.1469-8137.2012.04157.x