Thinning and in-stream wood recruitment in riparian second growth forests in coastal Oregon and the use of buffers and tree tipping as mitigation

Benda, Lee; Litschert, S. E.; Reeves, Gordon H.; Pabst, Robert J.

doi:10.1007/s11676-015-0173-2

Cited by 15 publications

(15 citation statements)

References 36 publications

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“…The loss of complex habitat harms species like the Northern Spotted Owl, which was listed on the Endangered Species Act in 1990 due to habitat loss and fragmentation from forest management and logging [69]. This loss of woody debris also affects forest streams as many aquatic species rely on in stream wood for habitat [70].…”

Section: Structural and Functional Changesmentioning

confidence: 99%

“…Evenly spaced cuts increase the amount of habitat fragmentations, so clustering cuts and maintaining undisturbed connectivity is an important practice [110] (Figure 2). Cuts can also be used to increase woody debris in streams, improving fish habitat [70]. Another important ecological principle included in new management plans is the inclusion of biological legacies, like old trees and standing dead trees (Figure 2).…”

Section: Thinning To Increase Heterogeneitymentioning

confidence: 99%

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Fire and Forest Management in Montane Forests of the Northwestern States and California, USA

Allen

Chhin

Zhang

2019

Fire

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We reviewed forest management in the mountainous regions of several northwestern states and California in the United States and how it has impacted current issues facing these forests. We focused on the large-scale activities like fire suppression and logging which resulted in landscape level changes. We divided the region into two main forests types; wet, like the forests in the Pacific Northwest, and dry, like the forests in the Sierra Nevada and Cascade ranges. In the wet forests, the history of intensive logging shaped the current forest structure, while fire suppression played a more major role in the dry forests. Next, we looked at how historical management has influenced new forest management challenges, like catastrophic fires, decreased heterogeneity, and climate change. We then synthesized what current management actions are performed to address these issues, like thinning to reduce fuels or improve structural heterogeneity, and restoration after large-scale disturbances. Lastly, we touch on some major policies that have influenced changes in management. We note a trend towards ecosystem management that considers a forest’s historical disturbance regime. With expected climate induced changes in fire frequency, it is suggested that fuel treatments be implemented in dry forests to ensure an understory fire regime is restored in these forest systems. With respect to wet forests in this region, it is suggested that there is still a place for stand-replacing fire regimes. However, these forests will require structural changes incorporating heterogeneity to improve their resiliency and health.

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Section: Structural and Functional Changesmentioning

confidence: 99%

Section: Thinning To Increase Heterogeneitymentioning

confidence: 99%

Fire and Forest Management in Montane Forests of the Northwestern States and California, USA

Allen

Chhin

Zhang

2019

Fire

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“…Such considerations can be incorporated using the same type of terrain analysis of additional topographic and vegetation attributes and other appropriate models and data. For example, intrinsic fish habitat potential can be estimated using channel slope, valley constraint (valley width/channel width), and mean annual flow (e.g., ; large wood supply to streams can be estimated using a tree height layer and tree mortality rates (e.g., Benda et al, 2015b;Flitcroft et al, 2016); and thermal loading to streams and effects of riparian shade can be estimated from a vegetation basal area and height layer and bare earth radiation calculations (e.g., Groom et al, 2011). Ultimately the various characterizations of intrinsic fish habitat, sediment supply, large wood supply, stream temperature, and other parameters of interest can be overlain and combined into a robust analysis to delineate and prioritize the most beneficial restoration locations across watersheds and landscapes (e.g., Benda et al, 2007).…”

Section: Other Considerationsmentioning

confidence: 99%

Delineating incised stream sediment sources within a San Francisco Bay tributary basin

2016

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Abstract. Erosion and sedimentation pose ubiquitous problems for land and watershed managers, requiring delineation of sediment sources and sinks across landscapes. However, the technical complexity of many spatially explicit erosion models precludes their use by practitioners. To address this critical gap, we demonstrate a contemporary use of applied geomorphometry through a straightforward GIS analysis of sediment sources in the San Francisco Bay Area in California, USA, designed to support erosion reduction strategies. Using 2 m lidar digital elevation models, we delineated the entire river network in the Arroyo Mocho watershed (573 km 2 ) at the scale of ∼ 30 m segments and identified incised landforms using a combination of hillslope gradient and planform curvature. Chronic erosion to the channel network was estimated based on these topographic attributes and the size of vegetation, and calibrated to sediment gage data, providing a spatially explicit estimate of sediment yield from incised channels across the basin. Rates of erosion were summarized downstream through the channel network, revealing patterns of sediment supply at the reach scale. Erosion and sediment supply were also aggregated to subbasins, allowing comparative analyses at the scale of tributaries. The erosion patterns delineated using this approach provide land use planners with a robust framework to design erosion reduction strategies. More broadly, the study demonstrates a modern analysis of important geomorphic processes affected by land use that is easily applied by agencies to solve common problems in watersheds, improving the integration between science and environmental management.

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“…due to habitat loss and fragmentation from forest management and logging (Franklin and Gutierres, 2002). This loss of woody debris also affects forest streams as many aquatic species rely on in stream wood for habitat (Benda et al, 2016).…”

Section: Structural and Functional Changesmentioning

confidence: 99%

“…1). Cuts can also be used to increase woody debris in streams, improving fish habitat (Benda et al, 2016). Another important ecological principle included in new management plans is the inclusion of biological legacies, like old trees and standing dead trees (Fig.…”

Section: Thinning To Increase Heterogeneitymentioning

confidence: 99%

Evaluating Post-Fire Plantation Restoration in a Mixed Conifer Forest in the Sierra Nevada

Allen¹

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Thank you to my advisor Dr. Steve Chhin for guidance during my three years of working for him. His advice, patience, and thoughtfulness helped keep me from getting too overwhelmed by graduate school. Thank you to my project's Co-PI, Dr. Jianwei Zhang and the United States Forest Service for providing funding. Dr. Zhang has also dedicated a lot of his time and resources into making this project successful. The other members of my graduate committee, Dr. Kirsten Stephan and Dr. Jamie Schuler, also deserve thanks for providing helpful feedback and project assistance. A big thank you to Natalie Pawlikowski for assisting me with building and calibrating my FVS simulations and providing very constructive edits to my thesis. Thank you to Dr. Michael Premer, Mukti Subedi, and Dr. James McGraw for providing me with guidance in study design and statistical analysis. There is no way this project could have been completed without help in the field from Stephi Dickinson, Kaelyn Finley, Mukti Subedi, Simeon Spottswood, and Clint Albright. Thank you for dealing with hot weather and steep slopes and for all being wonder field partners. Thank you to the staff at the Amador ranger station of the Eldorado National Forest for providing housing and general assistance during my two field seasons. Lastly, thank you to my many mentors during my scientific career, especially Dr. Brian Smithers. Thank you for inspiring my love of field work and forest ecology, challenging me to become a better scientist, showing me how to be a good leader, and the countless letters of recommendation. List of Tables .

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Thinning and in-stream wood recruitment in riparian second growth forests in coastal Oregon and the use of buffers and tree tipping as mitigation

Cited by 15 publications

References 36 publications

Fire and Forest Management in Montane Forests of the Northwestern States and California, USA

Fire and Forest Management in Montane Forests of the Northwestern States and California, USA

Delineating incised stream sediment sources within a San Francisco Bay tributary basin

Evaluating Post-Fire Plantation Restoration in a Mixed Conifer Forest in the Sierra Nevada

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