A national tree-ring data repository for Canadian forests (CFS-TRenD): structure, synthesis, and applications
- 1 June 2021
- journal article
- review article
- Published by Canadian Science Publishing in Environmental Reviews
- Vol. 29 (2), 225-241
- https://doi.org/10.1139/er-2020-0099
Abstract
Understanding the magnitude and cause of variation in tree growth and forest productivity is central to sustainable forest management. Measurements of annual growth rings allow assessments of individual-tree, tree population, and forest ecosystem vulnerabilities to drought stress or other changing forest disturbance regimes (insects, diseases, fire), which can be used to identify areas at greatest risk of forest losses. Given a heightened demand for tree-ring data, we consolidated and synthesized tree-ring studies and datasets gathered over the past 30 years in Canada by scientists with the Canadian Forest Service and research partners. We incorporated these datasets into a data repository that currently contains tree-ring measurements from 40 206 tree samples from 4594 sites and 62 tree species from all Canadian provinces and territories. Through our synthesis, we demonstrate the value of such large ensembles of tree-ring data for identifying patterns in tree growth over large spatial scales by mapping pan-Canadian drought sensitivity. Overall, we found high coherence in the samples analyzed; low coherence was generally limited to data-poor regions and species. Drought sensitivity was widespread across species and regions: 34% of sampled trees displayed a significant positive relationship between annual growth increment and summer soil moisture index. Dependence upon water availability in species Picea mariana (Mill.) BSP, Pinus banksiana Lamb., Pinus contorta Douglas ex Loudon, and Pseudotsuga menziesii (Mirb.) Franco was more strongly expressed in the warmest regions of the species’ range; for species Picea glauca (Moench) Voss and Populus tremuloides Michx., drought sensitivity was stronger in the driest regions. This unprecedented consolidation and synthesis of tree-ring data will enable new research initiatives (e.g., meta-analyses) aimed at improved understanding of the drivers, patterns, and implications of changes in tree growth, as well as facilitating new research collaborations in earth and environmental sciences. Among other things, there is a need for expanding the spatial distribution of sites across Canada’s northern regions, increasing the number of samples collected from older stands and angiosperm species, and integrating datasets from studies that evaluate the effects of silvicultural experiments, including provenance and progeny trials, on tree growth.Keywords
This publication has 108 references indexed in Scilit:
- Detecting evidence for CO2 fertilization from tree ring studies: The potential role of sampling biasesGlobal Biogeochemical Cycles, 2012
- Inter-annual variability of ecosystem production in boreal jack pine forests (1975–2004) estimated from tree-ring data using CBM-CFS3Ecological Modelling, 2012
- Climate impacts on lodgepole pine (Pinus contorta) radial growth in a provenance experimentForest Ecology and Management, 2011
- A generic structure for plant trait databasesMethods in Ecology and Evolution, 2010
- Uncertainty in detecting climate change impact on the projected yield of black spruce (Picea mariana)Forest Ecology and Management, 2010
- Ponderosa pine mortality during a severe bark beetle (Coleoptera: Curculionidae, Scolytinae) outbreak in southern British Columbia and implications for wildlife habitat managementForest Ecology and Management, 2009
- Response of tree growth to a changing climate in boreal central Canada: A comparison of empirical, process-based, and hybrid modelling approachesEcological Modelling, 2008
- Trembling aspen responses to drought and defoliation by forest tent caterpillar and reconstruction of recent outbreaks in OntarioCanadian Journal of Forest Research, 2007
- Historical and spatial characteristics of spruce budworm Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae) outbreaks in northeastern British ColumbiaForest Ecology and Management, 2002
- Dynamics of eastern larch stands and its relationships with larch sawfly outbreaks in the northern Clay Belt of QuebecCanadian Journal of Forest Research, 2002