Evaluating survey instruments and methods in a steep channel

Scott, Daniel N.; Brogan, Daniel J.; Lininger, Katherine B.; Schook, Derek M.; Daugherty, Ellen E.; Sparacino, Matthew S.; Patton, Annette I.

doi:10.1016/j.geomorph.2016.08.020

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…At each reach, we measured channel geometry and other characteristics using a TruPulse 360 laser rangefinder (Scott et al, 2016), although our measurements were not consistent across all basins because field protocol evolved during the course of the study (Table S1). In the wet glaciogenic basin, we categorized channels by planform and dominant bedform (Montgomery & Buffington, 1997).…”

Section: Reach-scale Field Measurementsmentioning

confidence: 99%

Natural and Anthropogenic Controls on Wood Loads in River Corridors of the Rocky, Cascade, and Olympic Mountains, USA

Scott¹,

Wohl²

2018

Preprint

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Wood in rivers creates habitat, shapes the morphology of valley bottoms, and acts as a pool of organic carbon (OC). Effective riverine wood management depends on a robust understanding of the spatial distribution of wood throughout river networks. This motivates the analysis of wood load in relation to both reach- and basin-scale processes. We present wood load data coupled with precipitation, forest stand characteristic, land use, and geomorphic data across four basins in the Rocky, Cascade, and Olympic Mountains of the western USA. We compare basins with differing land use within the same climatic region and basins in differing climates and statistically model intra-basin wood load variability. Wood load is a function of metrics that generally describe river corridor spatial heterogeneity, metrics that describe wood storage patterns, and, at a broader scale, metrics that relate to wood supply. From this, we generate a conceptual model to describe controls on wood load across spatial scales. We use this model to propose that spatial heterogeneity and wood storage pattern together determine reach-scale wood trapping efficiency. Trapping efficiency in turn regulates how wood supply to valley bottoms determines wood load. We also find that wood in an undisturbed basin stores significant amounts of OC, and that wood load restoration has the potential to restore significant amounts of OC to valley bottoms. This conceptual model of wood load controls may serve as a framework to guide wood load modeling and restoration at multiple scales.

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Section: Reach-scale Field Measurementsmentioning

confidence: 99%

Natural and Anthropogenic Controls on Wood Loads in River Corridors of the Rocky, Cascade, and Olympic Mountains, USA

Scott¹,

Wohl²

2018

Preprint

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“…A fixed array of illumination and sensors facilitates repeatability, diminishing errors caused by these factors in subsequent measurements. Other sources of variability between subsequent measurements or operators would be comparable to other surveying methods and negligible, as suggested by Scott et al (2016).…”

Section: Contribution Of Micromorphometry To the Study Of Bedrock Rivmentioning

confidence: 92%

Morphometric measurements of bedrock rivers at different spatial scales and applications to geomorphological heritage research

Gómez-Heras

Ortega-Becerril

Garrote

et al. 2019

Prog Earth Planet Sci

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Morphometric characterisation is particularly relevant in the study of geomorphological heritage. 3D modelling techniques have been proven as very useful tools to recognise, characterise and valorise geomorphosites. Bedrock rivers account for one of the most outstanding aspects within geomorphological heritage due to the amount of distinctive and attractive geomorphological features associated to them and the high preservation of sculpted forms. Digital elevation models (DEMs) have made it increasingly possible to establish accurate morphometric indices and establish clearer connections between forms and processes. This paper reviews different methodologies to obtain DEMs on bedrock rivers. This review goes from DEM analysis at multiple spatial scales to introduce optical microrugosimeter as the latest technical development to facilitate micromorphometric analysis. Micromorphometric analysis opens the scope for improving the knowledge we have on trans-scale issues in bedrock rivers. Micromorphometric analysis also opens a new layer of information that enriches the public's valuation of geodiversity of geomorphosites by increasing its didactic and interpretative potential.

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“…The field survey protocol consists of initial surveys to describe wood jam characteristics, followed by optional repeat surveys of jam dynamics after high flows. The prescribed measurements can be rapidly, reproducibly, and cheaply collected by a team of two in all fluvial environments using only basic survey equipment (e.g., laser rangefinders; Scott et al, ), a field notebook or mobile device, a GPS‐enabled device, and a camera. The survey procedure generally takes between 5 and 15 min per wood jam for a one to two person team.…”

Section: Wooddam Component Descriptionsmentioning

confidence: 99%

Wood Jam Dynamics Database and Assessment Model (WooDDAM): A framework to measure and understand wood jam characteristics and dynamics

Scott

Wohl

Yochum

2019

River Research & Apps

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Wood jams in rivers and on floodplains play an essential role in shaping valley bottoms, and their dynamics regulate the ecology and morphology of river systems.Although wood jams are commonly used to regulate fluvial geomorphic processes and provide habitat, our inability to predict how wood jams change through time hampers wood restoration efforts. We present the Wood Jam Dynamics Database and Assessment Model (WooDDAM) to improve understanding and management of natural and anthropogenic wood jams in rivers. WooDDAM is composed of a field data collection protocol, an open database of wood jam characteristics and dynamics, machine learning statistical models for predicting wood jam dynamics during high flows, and an online user interface to facilitate collaborative data collection and use. Here, we provide the background and guidance necessary to utilize WooDDAM to make predictions of and contribute to the database describing wood jam dynamics. We present tests of interoperator variability to justify database variable selection. To refine model predictions and improve predictive power, we encourage users to follow simple resurvey procedures and submit observations of wood jam dynamics. WooDDAM provides a management and monitoring tool for the retention or reintroduction of wood jams in rivers and facilitates further research into the interactions between wood jam dynamics and fluvial or ecological processes.

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Evaluating survey instruments and methods in a steep channel

Cited by 13 publications

References 21 publications

Natural and Anthropogenic Controls on Wood Loads in River Corridors of the Rocky, Cascade, and Olympic Mountains, USA

Natural and Anthropogenic Controls on Wood Loads in River Corridors of the Rocky, Cascade, and Olympic Mountains, USA

Morphometric measurements of bedrock rivers at different spatial scales and applications to geomorphological heritage research

Wood Jam Dynamics Database and Assessment Model (WooDDAM): A framework to measure and understand wood jam characteristics and dynamics

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