Introduction to the Wood in World Rivers special issue

Wohl, Ellen; Iroumé, Andrés

doi:10.1002/esp.5081

Cited by 4 publications

(3 citation statements)

References 117 publications

(180 reference statements)

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“…By substituting M and I into Equation (6), we calculated the rotational motion of the wood pieces. The Equations (1), (2) and (6) indicate that the driving force for the motion of the wood piece is only the drag force from the hydrodynamic calculation, neglecting the collision of the individual wood pieces and interaction between the wood and bed surface. The former assumption is critical for logjam formation, and the latter might be problematic for wood piece deposition.…”

Section: Driftwood Model: Lagrangian Approachmentioning

confidence: 99%

“…from mountainous areas to the ocean. As one such material being transported in rivers, driftwood has recently received considerable attention in various research and engineering studies (e.g., [1,2]). This is because the large pieces of wood have many roles in river systems; they can provide a large variety of flow and sediment transport fields thereby creating rich habitats for many aquatic species [3], have a non-negligible effect on the landscapes [4,5], and increase flood risks [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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The Role of Large-Scale Bedforms in Driftwood Storage Mechanism in Rivers

Okitsu

Iwasaki

Kyuka

et al. 2021

Water

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The quantification of driftwood deposition in rivers is important for understanding the total budget of driftwood at the watershed scale; however, it remains unclear how such driftwood storage in rivers contributes to the overall system because of the difficulties in undertaking field measurements. Herein, we perform numerical simulations of driftwood deposition within an idealized river reach with a sand-bed, to describe the role of large-scale bedforms, more specifically, alternate bars, multiple bars, and braiding, in driftwood storage in rivers. The numerical model we propose here is a coupling model involving a Lagrangian-type driftwood model and an Eulerian two-dimensional morphodynamic model for simulating large-scale bedforms (i.e., bars and braiding). The results show that the channel with a braiding pattern provides a wide area with enhanced capacity for deposition of driftwood, characterized by exposed mid-channel or in-channel bars, leading to high driftwood storage. The alternate bar is also a large bedform representing a sediment depositional element in rivers; however, because of the narrow exposed bar area and its downstream-migrating feature during floods, the alternate bars seem to contribute less to driftwood deposition in rivers. This suggests that the role of multiple bars and braiding is critically important for the driftwood deposition in rivers.

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Section: Driftwood Model: Lagrangian Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Role of Large-Scale Bedforms in Driftwood Storage Mechanism in Rivers

Okitsu

Iwasaki

Kyuka

et al. 2021

Water

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“…Land plants are some of the most effective biogeomorphic agents on Earth today, modifying physical processes and landforms by complex and diverse means that include: roots increasing substrate shear strength and resistance to erosion; canopies and litter reducing the efficacy of raindrop impact and surface runoff; plant-and fungal symbiont-induced weathering and modification of the critical zone; the provision of organic matter that can change sediment properties such as cohesiveness; baffling and binding of sediment to promote the accretion of landforms; or acting as obstacles to flowing air and water and changing turbulence properties through friction and drag effects (e.g., Corenblit et al, 2007Corenblit et al, , 2015Corenblit et al, , 2020Phillips, 2016;Horton et al, 2017;Kleinhans et al, 2018;Larsen, 2019). Trees in particular are effective ecosystem engineers, promoting landscape heterogeneity not only through their physical presence, but also due to the hydrodynamic resistance of their arborescent form and deeper rooting systems, their role in the hydraulic redistribution of groundwater, their propensity for uprooting release of sediment and creation of microhabitats, and the production of large woody debris that can modify landscapes through island formation or log-jamming of streams (e.g., Harmon et al, 1986;Jones et al, 1994;Gurnell et al, 2002;Gurnell, 2003;Wohl, 2013Wohl, , 2017Gurnell, 2014;Davidson et al, 2015;Kramer and Wohl, 2015;Pawlik et al, 2016;Sullivan et al, 2016;Wohl and Iroumé, 2021).…”

Section: Devonian Vegetation and Sedimentationmentioning

confidence: 99%

The Devonian landscape factory: plant–sediment interactions in the Old Red Sandstone of Svalbard and the rise of vegetation as a biogeomorphic agent

Davies

Berry

Marshall

et al. 2021

JGS

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The Devonian Period was a crucial interval in the evolution of plants. During its 60 myr duration, it witnessed the successive evolution of roots, wood, trees and forests, and many of the biogeomorphic phenomena that operate in modern terrestrial environments came online for the first time. The Old Red Sandstone (ORS) of Svalbard consists of a near-continuous Silurian to Late Devonian record of land plant-colonized sedimentary environments and provides a perfect natural laboratory to aid understanding of the facies signatures and evolution of these phenomena. Here we describe and illustrate a catalogue of ORS features that provide evidence for the stepwise appearance of novel plant-sediment interactions, including: preserved plant material and rooting structures, early large woody debris accumulations, cannel coal deposits, and the oldest known vegetation-induced sedimentary structures, in addition to vegetation-influenced motifs of elevated mudrock content and complex alluvial sand bodies. These characteristics are combined to reconstruct changes to non-marine environments in this Devonian ‘landscape factory’. In addition to tectonic and climate influences, plant evolution first served as a control on the construction of the sedimentary record during this period and has persisted as a fundamental influence on Earth surface processes and landforms ever since.

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Plants and river morphodynamics: The emergence of fluvial biogeomorphology

Gurnell,

Bertoldi

2024

River Research & Apps

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In this article, we track the evolution of fluvial biogeomorphology from the middle of the 20th century to the present. We consider the emergence of fluvial biogeomorphology as an interdisciplinary research area that integrates knowledge drawn primarily from fluvial geomorphology and plant ecology, but with inputs from hydrology and landscape ecology. We start by assembling evidence for the emergence of the field of fluvial biogeomorphology with a keyword search of the Web of Science and a detailed analysis of papers published in two scientific journals: a geomorphology journal—Earth Surface Processes and Landforms; a multidisciplinary river science journal—River Research and Applications. Based on this evidence, we identify three distinct time periods in the development of fluvial biogeomorphology: the ‘early years’ before 1990; the transitional decade of the 1990s; and the period of rapid expansion and diversification in themes, methods and investigation scales since 2000. Because the literature is vast, we can only summarize developments in each of these time periods, but we refer to recent in‐depth reviews and conceptual perspectives on relevant topics. Thus, rather than a full and deep review, we present an annotated bibliographic overview of the development of fluvial biogeomorphology, whereby the text describes broad trends but is supported by tables of citations that can deliver greater detail. We end with a brief consideration of likely future developments.

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Introduction to the Wood in World Rivers special issue

Cited by 4 publications

References 117 publications

The Role of Large-Scale Bedforms in Driftwood Storage Mechanism in Rivers

The Role of Large-Scale Bedforms in Driftwood Storage Mechanism in Rivers

The Devonian landscape factory: plant–sediment interactions in the Old Red Sandstone of Svalbard and the rise of vegetation as a biogeomorphic agent

Plants and river morphodynamics: The emergence of fluvial biogeomorphology

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