It is not just a 'trade-off' indications for sink- and source-limitation to vegetative and regenerative growth in an old-growth beech forest

It is not just a 'trade-off' : indications for sink- and source-limitation to vegetative and regenerative growth in an old-growth beech forest

© 2020 The Authors. New Phytologist © 2020 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 226(2020), 1 vom: 27. Apr., Seite 111-125
1. Verfasser: Mund, Martina (VerfasserIn)
Weitere Verfasser: Herbst, Mathias, Knohl, Alexander, Matthäus, Bertrand, Schumacher, Jens, Schall, Peter, Siebicke, Lukas, Tamrakar, Rijan, Ammer, Christian
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Fagus sylvatica carbon allocation climate forest growth fruit production masting sink or source limitation trade-off mehr... Carbon 7440-44-0
Beschreibung
Zusammenfassung:© 2020 The Authors. New Phytologist © 2020 New Phytologist Trust.
Controls on tree growth are key issues in plant physiology. The hypothesis of our study was that the interannual variability of wood and fruit production are primarily controlled directly by weather conditions (sink limitation), while carbon assimilation (source limitation) plays a secondary role. We analyzed the interannual variability of weather conditions, gross primary productivity (GPP) and net primary productivity (NPP) of wood and fruits of an old-growth, unmanaged Fagus sylvatica forest over 14 yr, including six mast years. In a multiple linear regression model, c. 71% of the annual variation in wood-NPP could be explained by mean air temperature in May, precipitation from April to May (positive influence) and fruit-NPP (negative influence). GPP of June to July solely explained c. 42% of the variation in wood-NPP. Fruit-NPP was positively related to summer precipitation 2 yr before (R2  = 0.85), and negatively to precipitation in May (R2  = 0.83) in the fruit years. GPP had no influence on fruit-NPP. Our results suggest a complex system of sink and source limitations to tree growth driven by weather conditions and going beyond a simple carbon-mediated 'trade-off' between regenerative and vegetative growth
Beschreibung:Date Completed 26.04.2021
Date Revised 26.04.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.16408