A Process-Based View of Floodplain Forest Patterns in Coastal River Valleys of the Pacific Northwest

Naiman, Robert J.; Bechtold, J. Scott; Beechie, Timothy J.; Latterell, J. J.; Pelt, Robert Van

doi:10.1007/s10021-009-9298-5

Cited by 86 publications

(79 citation statements)

References 121 publications

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“…Wood accumulations contribute to landform development such as the creation of forest patches that are ultimately eroded and recruited as wood to the channel (Fetherston et al 1995;Gurnell et al 2001;Naiman et al 2010). Wood recruitment to large rivers with floodplains depends on the channel migration rate and the density, age, and size of trees on the floodplain surface.…”

Section: Wood Functionmentioning

confidence: 99%

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Wood placement in river restoration: fact, fiction, and future direction

Roni

Beechie

Pess

et al. 2015

Can. J. Fish. Aquat. Sci.

191

211

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Despite decades of research on wood in rivers, the addition of wood as a river restoration technique remains controversial. We reviewed the literature on natural and placed wood to shed light on areas of continued debate. Research on river ecology demonstrates that large woody debris has always been a natural part of most rivers systems. Although a few studies have reported high structural failure rates (>50%) of placed instream wood structures, most studies have shown relatively low failure rates (<20%) and that placed wood remains stable for several years, though long-term evaluations of placed wood are rare. The vast majority of studies on wood placement have reported improvements in physical habitat (e.g., increased pool frequency, cover, habitat diversity). Studies that have not reported improvements in physical habitat often found that watershed processes (e.g., sediment, hydrology, water quality) had not been addressed. Finally, most evaluations of fish response to wood placement have shown positive responses for salmonids, though few studies have looked at long-term watershed-scale responses or studied a wide range of species.Résumé : Malgré des décennies de recherche sur le bois dans les rivières, l'ajout de bois comme technique de restauration demeure controversé. Nous avons passé en revue la documentation sur le bois naturel et mis en place pour faire la lumière sur les enjeux qui font toujours l'objet de débat. La recherche en écologie fluviale démontre que les grands débris ligneux ont toujours constitué une composante naturelle de la plupart des réseaux fluviaux. Si quelques études ont signalé des taux élevés de défaillance structurale (>50 %) des structures en bois mises en place dans des cours d'eau, la plupart des études ont noté des taux de défaillance assez faibles (<20 %) et montré que le bois mis en place dans les cours d'eau demeurait stable pendant plusieurs années, les évaluations à long terme du bois mis en place étant toutefois rares. La grande majorité des études sur la mise en place de bois font état d'améliorations de l'habitat physique (p. ex. fréquences accrues de mouilles, couvert, diversité des habitats). Bon nombre des études n'ayant pas constaté d'amélioration de l'habitat physique notaient que les processus hydrographiques (p. ex. sédiments, hydrologie, qualité de l'eau) n'avaient pas été pris en considération. Enfin, si la plupart des évaluations de la réaction des poissons à la mise en place de bois ont relevé des réactions positives en ce qui concerne les salmonidés, peu d'études ont examiné les réactions à long terme à l'échelle du bassin versant ou étudié un grand éventail d'espèces. [Traduit par la Rédaction]

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Section: Wood Functionmentioning

confidence: 99%

“…Wood recruitment to large rivers with floodplains depends on the channel migration rate and the density, age, and size of trees on the floodplain surface. It is also a function of channel pattern, which controls lateral migration rate (Beechie et al 2006;Naiman et al 2010).…”

Section: Wood Functionmentioning

confidence: 99%

Wood placement in river restoration: fact, fiction, and future direction

Roni

Beechie

Pess

et al. 2015

Can. J. Fish. Aquat. Sci.

191

211

View full text Add to dashboard Cite

show abstract

“…Soil movement and sedimentation are important processes in the development of floodplains and riparian systems (Naiman et al, 2010). Much has been written about the abiotic effects of natural riparian processes on riparian systems, particularly the roles of stream flow and river bank erosion (e.g.…”

Section: Introductionmentioning

confidence: 99%

The geomorphic signature of bare-nosed wombats (Vombatus ursinus) and cattle (Bos taurus) in an agricultural riparian ecosystem

Borchard

Eldridge

2011

Geomorphology

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“…Floodplains are dynamic features of the riverine landscape driven by exchanges of water and sediment mediated by the presence of vegetation (Hupp, 2000;Naiman et al, 2010). This occurs on multiple temporal and spatial scales (Dollar et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Adaptive cycles of floodplain vegetation response to flooding and drying

Thapa¹,

Thoms²,

Parsons³

et al. 2016

Earth Surf. Dynam.

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Abstract.Flooding is a key driver of floodplain vegetation productivity. Adaptive cycles provide a model for examining the productivity of semi-arid floodplain vegetation in response to hydrology. We examined the response of vegetation productivity (measured as NDVI) through a hypothesised adaptive cycle to determine whether the cycle repeats over time and how it is affected by differently sized flood events. The area of floodplain inundation was associated with an adaptive cycle that repeated in four flood events through the following phases: wetting (exploitation phase), wet (conservation phase), drying (release phase) and dry (reorganisation phase). Vegetation productivity responses corresponded to these phases. The area and quality of floodplain vegetation productivity followed the hypothesised pattern of higher-quality vegetation vigour in the wetting and wet phases, lower vigour in the drying phase and lowest vigour in the dry phase. There were more transitions between NDVI classes in the wet phase, which was dominated by two-way transitions. Overall, the wetting, wet and drying phases were dominated by smaller-probability class changes, whereas in the dry phase, higher-probability class changes were more prominent. Although the four flood events exhibited an adaptive cycle the duration of the adaptive-cycle phases, and the nature of vegetation productivity response, differed with the character of the flood event. Vegetation response in two of the adaptive-cycle phases -the release and reorganisation phases -were as hypothesised, but in the exploitation and conservation phases, changes in vegetation productivity were more dynamic. The character of vegetation response through the adaptive cycle also indicates that semi-arid floodplain vegetation productivity is more vulnerable to changing state during the conservation and release phases and not during the exploitation and reorganisation phases as resilience theory suggests. Overall, the adaptive cycle represents a new model to improve our understanding of the complexity of change in semi-arid floodplain vegetation productivity through cycles of flooding and drying. Changes in vegetation productivity could initiate structural changes in floodplain vegetation communities, with commensurate influences on floodplain sediment dynamics.

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A Process-Based View of Floodplain Forest Patterns in Coastal River Valleys of the Pacific Northwest

Cited by 86 publications

References 121 publications

Wood placement in river restoration: fact, fiction, and future direction

Wood placement in river restoration: fact, fiction, and future direction

The geomorphic signature of bare-nosed wombats (Vombatus ursinus) and cattle (Bos taurus) in an agricultural riparian ecosystem

Adaptive cycles of floodplain vegetation response to flooding and drying

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