10.5061/DRYAD.1NS1RN8RM
Bengtsson, Fia
0000-0003-0497-8316
Uppsala University
Rydin, Håkan
Uppsala University
Baltzer, Jennifer
Wilfrid Laurier University
Bragazza, Luca
University of Ferrara
Bu, Zhao-Jun
Northeast Normal University
Caporn, Simon
Manchester Metropolitan University
Dorrepaal, Ellen
Umeå University
Flatberg, Kjell Ivar
Norwegian University of Science and Technology
Galanina, Olga
St. Petersburg State University
Gałka, Mariusz
University of Lodz
Ganeva, Anna
Bulgarian Academy of Sciences
Goia, Irina
Babeș-Bolyai University
Goncharova, Nadezhda
Russian Academy of Science
Hajek, Michal
Masaryk University
Haraguchi, Akira
University of Kitakyushu
Harris, Lorna
McGill University
Humphreys, Elyn
Carleton University
Jiroušek, Martin
Masaryk University
Kajukało, Katarzyna
Adam Mickiewicz University in Poznań
Karofeld, Edgar
University of Tartu
Koronatova, Natalia
Siberian Branch of the Russian Academy of Sciences
Kosykh, Natalia
Siberian Branch of the Russian Academy of Sciences
Laine, Anna
University of Eastern Finland
Lamentowicz, Mariusz
Adam Mickiewicz University
Lapshina, Elena
Yugra State University
Limpens, Juul
Wageningen University
Linkosalmi, Maiju
Finnish Meteorological Institute
Ma, Jinze
Northeast Normal University
Mauritz, Marguerite
Northern Arizona University
Mitchell, Edward
University of Neuchâtel
Munir, Tariq
University of Calgary
Natali, Susan
Woods Hole Research Center
Natcheva, Rayna
Bulgarian Academy of Sciences
Philippov, Dmitriy
Russian Academy of Sciences
Rice, Steven
Union College
Robinson, Sean
SUNY Oneonta
Robroek, Bjorn
Radboud University
Rochefort, Line
Laval University
Singer, David
University of Neuchâtel
Stenøien, Hans
Norwegian University of Science and Technology
Tuittila, Eeva-Stiina
University of Eastern Finland
Vellak, Kai
University of Tartu
Waddington, (James) Mike
McMaster University
Granath, Gustaf
Uppsala University
Payne, Richard J.
Environment and Geography, University of York
Environmental drivers of Sphagnum growth in peatlands across the Holarctic
region
Dryad
dataset
2020
Net primary production
peatlands
peat mosses
Net primary production
peatlands
peat mosses
2020-08-25T00:00:00Z
2020-08-25T00:00:00Z
en
687924 bytes
4
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The relative importance of global versus local environmental factors for
growth and thus carbon uptake of the bryophyte genus Sphagnum – the main
peat-former and ecosystem engineer in northern peatlands – remains
unclear. 2) We measured length growth and net primary production (NPP) of
two abundant Sphagnum species across 99 Holarctic peatlands. We tested the
importance of previously proposed abiotic and biotic drivers for peatland
carbon uptake (climate, N deposition, water table depth, and vascular
plant cover) on these two responses. Employing structural equation models,
we explored both indirect and direct effects of drivers on Sphagnum
growth. 3) Variation in growth was large, but similar within and between
peatlands. Length growth showed a stronger response to predictors than
NPP. Moreover, the smaller and denser Sphagnum fuscum growing on hummocks
had weaker responses to climatic variation than the larger and looser S.
magellanicum growing in the wetter conditions. Growth decreased with
increasing vascular plant cover within a site. Between sites,
precipitation and temperature increased growth for S. magellanicum. The
structural equation models indicated that indirect effects are important.
For example, vascular plant cover increased with a deeper water table,
increased nitrogen deposition, precipitation and temperature. These
factors also influenced Sphagnum growth indirectly by affecting moss shoot
density. 4) Synthesis Our results imply that in a warmer climate, S.
magellanicum will increase length growth as long as precipitation is not
reduced, while S. fuscum is more resistant to decreased precipitation, but
also less able to take advantage of increased precipitation and
temperature. Such species-specific sensitivity to climate may affect
competitive outcomes in a changing environment, and potentially the future
carbon sink function of peatlands.