Tree defence and bark beetles in a drying world: carbon partitioning, functioning and modelling
| Autor: | Amy M. Trowbridge, Jonathan Gershenzon, Chonggang Xu, Henry D. Adams, Almuth Hammerbacher, Markus Kautz, Jianbei Huang, Dineshkumar Kandasamy, Rupert Seidl, Kenneth F. Raffa, Arjan J. H. Meddens, Devin W. Goodsman, Henrik Hartmann |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Biogeochemical cycle climate changes Physiology Climate Change Plant Biology & Botany Climate change Plant Science Forests 01 natural sciences Trees 03 medical and health sciences Theoretical Models Bark (sound) Animals Computer Simulation Ecosystem Plant Diseases Agricultural and Veterinary Sciences secondary metabolites Ecology Sustainable resources Vegetation Biological Sciences Models Theoretical vegetation models nonstructural carbohydrate storage Carbon Droughts Coleoptera Tree (data structure) 030104 developmental biology Disturbance (ecology) carbon allocation insects and pathogens tree mortality Plant Bark bark beetles Environmental science 010606 plant biology & botany |
| Zdroj: | New Phytologist The New phytologist, vol 225, iss 1 |
| ISSN: | 1469-8137 0028-646X |
| DOI: | 10.1111/nph.16173 |
| Popis: | Drought has promoted large-scale, insect-induced tree mortality in recent years, with severe consequences for ecosystem function, atmospheric processes, sustainable resources and global biogeochemical cycles. However, the physiological linkages among drought, tree defences, and insect outbreaks are still uncertain, hindering our ability to accurately predict tree mortality under on-going climate change. Here we propose an interdisciplinary research agenda for addressing these crucial knowledge gaps. Our framework includes field manipulations, laboratory experiments, and modelling of insect and vegetation dynamics, and focuses on how drought affects interactions between conifer trees and bark beetles. We build upon existing theory and examine several key assumptions: (1) there is a trade-off in tree carbon investment between primary and secondary metabolites (e.g. growth vs defence); (2) secondary metabolites are one of the main component of tree defence against bark beetles and associated microbes; and (3) implementing conifer-bark beetle interactions in current models improves predictions of forest disturbance in a changing climate. Our framework provides guidance for addressing a major shortcoming in current implementations of large-scale vegetation models, the under-representation of insect-induced tree mortality. |
| Databáze: | OpenAIRE |
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