A time series intervention analysis (TSIA) of dendrochronological data to infer the tree growth-climate-disturbance relations and forest disturbance history is described. Maximum likelihood is used to estimate the parameters of a structural time series model with components for climate and forest...
Author(s)
Lee, E. H.; Wickham, C.; Beedlow, P. A.; Waschmann, R. S.; Tingey, D. T.
Publisher
Elsevier GmbH, München, Germany
Citation
Dendrochronologia, 2017, 45, pp 132-144
We utilize a large dendrochronological dataset for Sequoia sempervirens of 1.29 million rings from 5952 series for 278 trees to generate location and regional ring-width chronologies and to investigate constraints on crossdating. Increment cores were collected at regular height intervals along the...
Author(s)
Carroll, A. L.; Sillett, S. C.
Publisher
Elsevier GmbH, Munich, Germany
Citation
Dendrochronologia, 2023, 78,
Understanding sedimentation patterns in small coastal watersheds due to landscape perturbations is critical for connecting hillslope and fluvial processes, in addition to managing aquatic habitats for anadromous fish and other aquatic species in the Oregon Coast Range (OCR). Changes in...
Author(s)
Wetherell, L. R.; Ely, L. L.; Roering, J. J.; Walsh, M. K.; Burchfield, M. J.; Nace, K. E.; Wetherell, M. M.; Struble, W. T.
Publisher
Wiley, Chichester, UK
Citation
Earth Surface Processes and Landforms, 2021, 46, 7, pp 1375-1392
Bedrock landsliding, including the formation of landslide dams, is a predominant geomorphic process in steep landscapes. Clarifying the importance of hydrologic and seismic mechanisms for triggering deep-seated landslides remains an ongoing effort, and formulation of geomorphic metrics that predict ...
Author(s)
Struble, W. T.; Roering, J. J.; Burns, W. J.; Calhoun, N. C.; Wetherell, L. R.; Black, B. A.
Publisher
Wiley, Hoboken, USA
Citation
Journal of Geophysical Research: Earth Surface, 2021, 126, 4,
Large-magnitude earthquakes and hydrologic events in mountainous settings commonly trigger thousands of landslides, and slope failures typically constitute a significant proportion of the damage associated with these events. Large, dormant deep-seated landslides are ubiquitous in the Oregon Coast...
Author(s)
Struble, W. T.; Roering, J. J.; Black, B. A.; Burns, W. J.; Calhoun, N.; Wetherell, L.
Publisher
Geological Society of America, Boulder, USA
Citation
Geological Society of America Bulletin, 2020, 132, 7/8, pp 1775-1791
The late Holocene Bonneville landslide, a 15.5 km2 rockslide-debris avalanche, descended 1000 m from the north side of the Columbia River Gorge and dammed the Columbia River where it bisects the Cascade Range of Oregon and Washington, USA. The landslide, inundation, and overtopping created...
Author(s)
Reynolds, N. D.; O'Connor, J. E.; Pringle, P. T.; Bourdeau, A. C.; Schuster, R. L.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Quaternary Research, 2022, 109, pp 65-82
Due to a suite of environmental changes, Oregon white oak (Quercus garryana Douglas ex Hook; called Gary oak in Canada) associated ecosystems at many North American sites are being encroached upon by Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) and other conifer species....
Author(s)
Gedalof, Z.; Franks, J. A.
Publisher
MDPI AG, Basel, Switzerland
Citation
Forests, 2019, 10, 5, pp 381
We reconstruct pandora moth (Coloradia pandora Blake) outbreaks and climate from a 1572-year (435-2006 CE) ponderosa pine (Pinus ponderosa Dougl. ex Laws.) chronology from a lava flow in central Oregon. We took samples from 128 living trees and remnant logs and crossdated the samples using skeleton ...
Author(s)
Clark, P. W.; Speer, J. H.; Winship, L. J.
Publisher
Laboratory of Tree-Ring Research, University of Arizona, Tucson, USA
Citation
Tree-Ring Research, 2017, 73, 2, pp 113-125
Dry mixed-conifer forests are widespread in the interior Pacific Northwest, but their historical fire regimes are poorly characterized, in particular the relative mix of low- and high-severity fire. We reconstructed a multi-century history of fire from tree rings in dry mixed-conifer forests in...
Author(s)
Heyerdahl, E. K.; Loehman, R. A.; Falk, D. A.
Publisher
NRC Research Press, Ottawa, Canada
Citation
Canadian Journal of Forest Research, 2019, 49, 1, pp 76-86
This study reports the first successful statistical 'crossdating' among many ring width time series from petrified wood, thus providing a replicable continuous annual resolution window into tree growth and environmental influences during the middle Miocene. The petrified samples, of the genus ...
Author(s)
Wright, W. E.; Baisan, C.; Streck, M.; Wright, W. W.; Szejner, P.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Palaeogeography, Palaeoclimatology, Palaeoecology, 2016, 445, pp 38-49