Mapping the spatial and temporal distributions of woody debris in streams of the Greater Yellowstone Ecosystem, USA

Marcus, W. Andrew; Marston, Richard A.; Colvard, Charles R; Gray, Robin D.

doi:10.1016/s0169-555x(01)00181-7

Cited by 145 publications

(163 citation statements)

References 22 publications

Supporting

Mentioning

152

Contrasting

Unclassified

Order By: Relevance

“…This threshold is most likely between 75-100 km 2 . Marcus et al (2002) suggest a conceptual model of large wood on the floodplain over the longitudinal gradient where headwaters streams are transport-limited but move to a dynamic equilibrium downstream and then become supply-limited in-streams with bankfull widths larger than ~200 m. Coupled with our results on the reduction of large wood flux in larger rivers, the pattern that larger streams generally have less large wood is supported (Benda et al, 2003;Seo et al 2008). …”

Section: Export and Transport Thresholdssupporting

confidence: 76%

“…Data suggest that export rates are relatively higher in small watersheds (this dataset) with more in-stream storage (Marcus et al 2002;). Downstream watersheds have less hillslope recruitment and more long-term floodplain storage of large wood (Latterell and Naiman, 2007).…”

Section: Discussionmentioning

confidence: 71%

“…Significant recruitment from upstream hillslopes coupled with episodic floods that cause bank erosion and transport capacity downstream could synergistically increase upstream rate of export while decreasing the export rate with downstream changes to the floodplain dynamics (Marcus et al 2002;Reeves et al 2003;Seo and Nakamura, 2009;Wohl and Jaeger, 2009). …”

Section: Explanation 3 -No Significant Increase Of Recruitmentmentioning

confidence: 99%

“…In addition, a separate threshold was suggested in the literature at around 20 km 2 relating to transport capacity, or a transport threshold (Martin and Benda, 2001;Marcus et al, 2002;Brummer et al 2006). This threshold relates the relative sizes of wood and channel widths.…”

Section: Export and Transport Thresholdsmentioning

confidence: 99%

See 3 more Smart Citations

Watershed controls on the export of large wood from stream corridors

Fremier¹,

Seo²,

Nakamura³

2010

Geomorphology

View full text Add to dashboard Cite

Large wood maintains in-channel and floodplain habitats by influencing the biophysical character of the river corridor. Large wood dynamics in a river corridor are a product of both watershed-wide processes but also of local recruitment, transport, and storage. This complexity of scales added to the logistical constraints in taking measurements limits our understanding of large wood dynamics through the watershed. To begin to unravel this issue, we compiled a dataset of the volume of large wood deposited annually into 131 reservoirs across Japan, and compared large wood export to both flow discharge and watershed characteristics (watershed size, latitude, channel slope, percent forest, and forest type). We found that large wood was predominately transported during peak flow events. Large wood export increased logarithmically with watershed area. The decreasing export rate of large wood per watershed area is interpreted as a combination of annual export variability in upper watersheds, a non-significant increase in large wood recruitment along the longitudinal gradient (potentially human influenced), the increase in long-term storage on adjacent large floodplains, and significant decay/fragmentation downstream. Watersheds <10-20 km 2 had a highly variable large wood export pattern, conforming generally to previously published work that suggest transport limitation in smaller watersheds. The data suggest that there is an export threshold (~75 km 2 ) where large wood export is no longer related to watershed size. Export across all watershed sizes was controlled by watershed characteristics (slope, percent forested, etc.) and peak discharge events. The connection with upstream watersheds and laterally with the floodplain increases the net flux of large wood through downstream transport and reFremier, Page 3 of 39 transport of buried logs. Identifying rates of large wood transport due to watershed connectivity as a potential key input process will improve our basic understanding of geomorphic and ecological patterns within the watershed. These results highlight the importance of understanding both the local and watershed scale dynamics of large wood in creating and maintaining more heterogeneous riparian and aquatic habitat along the river corridor.

show abstract

Section: Export and Transport Thresholdssupporting

confidence: 76%

Section: Discussionmentioning

confidence: 71%

Section: Explanation 3 -No Significant Increase Of Recruitmentmentioning

confidence: 99%

Section: Export and Transport Thresholdsmentioning

confidence: 99%

See 2 more Smart Citations

Watershed controls on the export of large wood from stream corridors

Fremier¹,

Seo²,

Nakamura³

2010

Geomorphology

View full text Add to dashboard Cite

show abstract

“…Montgomery et al (2003a) surmised that the relative immobility of large wood, its impounding of sediment, and the concomitant shielding of the underlying bedrock decrease the effective bedrock erodibility and, hence, steepen the longitudinal channel profile. These effects are likely greater further upstream because (a) debris flows richer in wood deposit further upstream (May, 2002;Lancaster et al, 2003) and (b) large wood has lower mobility in smaller channels (Marcus et al, 2002). Boulders, which are typically deposited by debris flows but essentially immovable by fluvial processes, have similar effects (figure 2).…”

Section: Introductionmentioning

confidence: 99%

Debris dams and the relief of headwater streams

Lancaster

Grant

2006

Geomorphology

View full text Add to dashboard Cite

Wood dispersal in braided streams: Results from physical modeling

Welber

Bertoldi

Tubino

2013

Water Resources Research

View full text Add to dashboard Cite

[1] Wood is a key feature of riverine systems, playing a significant role in their morphodynamics and ecology. Wood dynamics have been widely investigated in singlethread streams, but limited information is available about wood transport and deposition in large multithread rivers. In this work, we used a large (3 3 25 m) physical model to provide a quantitative description of wood dispersal processes in braided systems. Deposition patterns were characterized in terms of downstream distribution and accumulation size and linked to wood piece properties (diameter, length, and presence of a rootwad) and flow stage. Statistical analysis of observed wood patterns showed that relative log diameter strongly reduces wood mobility, with travel distance dropping for diameters exceeding 50% of median channel depth. Wood tended to form small, sparse accumulations, with large log jams occurring for large log length, complex piece shape, and moderate flow discharge. Flow stage had a dual effect on mobility as both channel conveyance and the availability of retentive sites increased with discharge for the tested range of flow conditions. Additionally, wood deposition was strongly linked to bed morphology. In particular, 40-60% of transported wood was stored at bar apex, with more than 30% of wood deposited on the first bar downstream of the input point, highlighting the crucial role of local-scale morphology in wood dispersal.

show abstract

Mapping the spatial and temporal distributions of woody debris in streams of the Greater Yellowstone Ecosystem, USA

Cited by 145 publications

References 22 publications

Watershed controls on the export of large wood from stream corridors

Watershed controls on the export of large wood from stream corridors

Debris dams and the relief of headwater streams

Wood dispersal in braided streams: Results from physical modeling

Contact Info

Product

Resources

About