Effects of post-wildfire erosion on channel environments, Boise River, Idaho

Benda, Lee; Miller, Daniel; Bigelow, Paul; Andras, Kevin

doi:10.1016/s0378-1127(03)00056-2

Cited by 162 publications

(130 citation statements)

References 44 publications

Supporting

Mentioning

127

Contrasting

Order By: Relevance

“…In the intermediate to longterm temporal scale, wildfire can alter diets of stream fish (Koetsier et al 2007), influence the distribution of fish and amphibians (Dunham et al 2007), alter ecosystem metabolism (Tuckett 2007), affect leaf litter processing rates (this study), and reconfigure a stream's physical and geomorphological characteristics (Benda et al 2003, Meyer and Pierce 2003, Robinson et al 2005. To best manage fish, wildlife, and timber resources, an understanding of how wildfire affects biotic processes over the long term is essential.…”

Section: ]mentioning

confidence: 85%

“…From our reconnaissance survey, we found that, based on wildfire patterns and soil instability, these systems were good examples of 3 stream conditions found throughout the Boise River basin: (1) unburned (UB), streams that were not burned by fire within the last century; (2) burned only (BO), streams that though burned, retained much of the vegetation's belowground structures; and (3) burned/scoured (B/S), streams that less than a year after the fire experienced major erosion, movement, and redeposition of bed material, which removed most of the riparian belowground vegetative structures (see Benda et al 2003 for a detailed fire history of this area).…”

Section: Fire History and Sampling Methodsmentioning

confidence: 99%

“…), and water birch (Betula occidentalis)-each type with an associated understory of mixed shrubs, grasses, and forbs. The regional climate is continental, with an average precipitation of 500 mm per year (Benda et al 2003). The bedrock substrate in the basin is dominated by moderately to well-weathered coarsegrained quartz monzonite, typical of much of the Idaho Batholith.…”

Section: Study Areamentioning

confidence: 99%

“…Recent studies show that, based on underlying geology, soil type, and burn intensity, some tributaries are prone to massive debris flows and channel reorganization when riparian vegetation is removed by fire (Benda et al 2003, Dwire and Kauffman 2003, Wondzell and King 2003, Dunham et al 2007, Tuckett 2007. Such debris flows may periodically reoccur under moderate to heavy rainfall events.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Present Effects of Past Wildfires on Leaf Litter Breakdown in Stream Ecosystems

Koetsier

Krause

Tuckett

2010

Western North American Naturalist

View full text Add to dashboard Cite

Section: ]mentioning

confidence: 85%

Section: Fire History and Sampling Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Present Effects of Past Wildfires on Leaf Litter Breakdown in Stream Ecosystems

Koetsier

Krause

Tuckett

2010

Western North American Naturalist

View full text Add to dashboard Cite

“…Repeated hydrologic disturbance decreases channel stability, reduces the availability and quality of fish habitat such as course woody debris and can decimate benthic invertebrate food resources (Rinne, 1996;Gresswell, 1999;Benda et al, 2003;Vaz et al 2011;. The increase in suspended sediments and associated sedimentation can cause fish and invertebrate mortalities and can entomb benthic eggs and larvae (Rieman and Clayton, 1997;Cooper et al 2015).…”

Section: Discussionmentioning

confidence: 99%

The impact of wildfire on stream fishes in an Atlantic-Mediterranean climate: evidence from an 18-year chronosequence

Monaghan

Machado

Wrona

et al. 2016

Knowl. Manag. Aquat. Ecosyst.

View full text Add to dashboard Cite

-The predicted increase in wildfires associated with climate change poses a risk to freshwater biodiversity that may be exacerbated by river regulation. We studied the effects of wildfire and river management on the fish assemblages of Atlantic-Mediterranean streams in northern Portugal. Employing a chronosquence survey covering an 18-year gradient of impact-recovery from major fire events (ca. 100% catchment burnt), we assessed the ecological response with respect to time since wildfire, interpreting fish assemblages in the context of species traits and characteristics of the river habitat. Non-burnt sites (N = 18; surveyed 4 years previously) were compared to burnt sites (N = 14), two of which were part of the non-burnt set, thus providing a Before-After Impact comparison (BAI; N = 2). Across burnt sites richness and abundance were not related to time since wildfire. BAI revealed a contrast in the response of different species that corresponded to descriptive evidence from the chronosequence of burnt sites. As resource specialists, Salmo trutta were negatively impacted by wildfire; Iberian endemic cyprinids, characterized by generalist traits, demonstrated resistance. Habitat structure was a key determinant of wildfire-impact, increasing with channel slope and the degree of channelization. The low abundance of migratory taxa (S. trutta and Anguilla anguilla) at burnt sites suggested the importance of fish mobility to post-fire recovery. These data demonstrate that trait profiles and habitat descriptions provide pragmatic information for the management of rivers in fire-susceptible regions and suggest that the rehabilitation of these upland stream habitats might enhance ecological resistance and resilience to catchment wildfire. Key-words:wildfire / fishes / species traits / Mediterranean streams / river habitat / conservation management Résumé -L'impact des incendies sur les poissons des cours d'eau en climat atlantique-méditerranéen : étude d'une chronoséquence de 18 ans. L'augmentation prévue des incendies associés au changement climatique pose un risque pour la biodiversité d'eau douce, qui peut être aggravé par la régulation de la rivière. Nous avons étudié les effets des feux et de la gestion de la rivière sur les peuplements de poissons de cours d'eau dans le nord du Portugal. Étudiant la chronoséquence d'un suivi couvrant une durée de 18 ans d'impact-récupération d'incendies majeurs (environ 100 % du bassin versant brûlé), nous avons évalué la réponse écologique temporelle à un incendie, en analysant les assemblages de poissons dans le contexte des traits d'espèces et des caractéristiques de l'habitat de la rivière. Les sites non brûlés (N = 18 ; suivis 4 ans auparavant) ont été comparés à des sites brûlés (N = 14), dont deux faisaient partie de l'ensemble non brûlé, offrant ainsi une comparaison avant-après l'impact (BAI ; N = 2). Parmi les sites brûlés la richesse et l'abondance ne sont pas liées au temps depuis l'incendie. BAI a révélé un contraste dans la réponse des différentes espèces qui...

show abstract

Morphodynamic response of a variable‐width channel to changes in sediment supply

Nelson

Brew

Morgan

2015

Water Resources Research

View full text Add to dashboard Cite

River channels commonly exhibit downstream variations in channel width, which can lead to the development of alternating shallow and deep areas known as riffle-pool sequences. The response of these channels to variations in sediment supply remains largely unexplored. Here we investigate the morphodynamic response of a variable-width channel to changes in sediment supply through laboratory experiments conducted in a straight flume in which we imposed sinusoidal variations in width. We first developed equilibrium conditions under a constant sediment supply and then eliminated the sediment feed to create a degraded, armored bed. This sediment-starved bed was subjected to two types of sediment supply increases: a return to the initial constant supply, and the introduction of a well-sorted sediment pulse (analogous to gravel augmentation). Riffles and pools formed in wide and narrow areas, respectively, and the location of and relief between riffles and pools remained the same throughout all experimental runs, regardless of the sediment supply. The primary channel response to changes in supply was adjustment of the overall slope. The sediment pulse evolved primarily through dispersion rather than translation, which contrasts with prior gravel augmentation experiments conducted in constant-width channels and suggests that width variation and resulting riffle-pool topography enhances pulse dispersion. Our results indicate that width variation is a primary control on the location and relief of riffles and pools in straight channels, and sediment supply changes are unlikely to affect riffle-pool morphology when bank geometry is fixed and water discharge is steady.

show abstract

Effects of post-wildfire erosion on channel environments, Boise River, Idaho

Cited by 162 publications

References 44 publications

Present Effects of Past Wildfires on Leaf Litter Breakdown in Stream Ecosystems

Present Effects of Past Wildfires on Leaf Litter Breakdown in Stream Ecosystems

The impact of wildfire on stream fishes in an Atlantic-Mediterranean climate: evidence from an 18-year chronosequence

Morphodynamic response of a variable‐width channel to changes in sediment supply

Contact Info

Product

Resources

About