Restoration of dead wood in Basque stream channels: effects on brown trout population

Antón, Álvaro; Elosegi, Arturo; García-Arberas, L.; Díez, José Ramón; Rallo, Ana

doi:10.1111/j.1600-0633.2010.00482.x

Cited by 29 publications

(13 citation statements)

References 41 publications

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“…Fish were sampled by electrofishing in June and December the year before and the 2 years after the restoration activity (Anton et al 2011). The entire reach was surveyed in the smaller streams (1-3), whereas only 100-m-long reaches were surveyed in the largest one (stream 4).…”

Section: F I S H P O P U L a T I O N Smentioning

confidence: 99%

Does it make economic sense to restore rivers for their ecosystem services?

Acuña

Díez

Flores

et al. 2013

Journal of Applied Ecology

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Summary1. Temperate forests managed to maximize sustainable yield of wood products can reduce the availability of dead wood on the forest floor and in adjacent streams, which in turn can impair ecological processes such as retention and transformation of organic matter. Lack of tools to link ecological processes with their effects on human well-being leads forest managers to ignore the cost on other services from terrestrial and aquatic ecosystems. 2. We examine how adding dead wood to restore stream channel complexity affects the provision and value of selected ecosystem services, mainly related to the retention and transformation of matter and cycling of nutrients, as well as to the effects on aquatic biota. Specifically, we evaluated the cost-effectiveness of stream restoration through a comparative analysis of four reach-scale projects in streams flowing through temperate forest and into a drinking water reservoir and two scenarios of active and passive restoration at the basin scale. 3. Results indicate that the lack of dead wood in streams has an important economic cost because of the effects on fish provisioning, opportunities for recreation and tourism, water purification and erosion control. Active reach-scale restoration resulted in a 10-to 100-fold increase in the monetary benefits provided by streams, accounting as much as 1Á8 € per metre of restored river length each year. Results of the reach-scale cost-benefit analyses estimated that the time required to recover the active restoration investment ranged from 15 to 20 years in low-to middle-order streams. 4. Synthesis and applications. Our study showed that restoration of natural wood loading in streams greatly increases the ecosystem services they provide. The benefits in terms of the analysed services surpass the costs of active restoration over realistic timeframes, whereas this was not the case for passive restoration. Inclusion of other ecosystem services such as conservation of biodiversity might make restoration more economically profitable. Overall, our study provides a decision framework for managing temperate riparian forests in the context of ecological services.

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Section: F I S H P O P U L a T I O N Smentioning

confidence: 99%

Does it make economic sense to restore rivers for their ecosystem services?

Acuña

Díez

Flores

et al. 2013

Journal of Applied Ecology

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“…Stream salmonids may not only seek shelter in the streambed but also use stream wood, at least at temperatures of 1–13 °C (Culp, Scrimgeour & Townsend, ; Enefalk & Bergman, ; Enefalk et al ., ). Generally, the use of wood shelters is related to fish size, with salmonids <10 cm long using fine stream wood (FW < 10 cm in diameter; Culp et al ., ; Enefalk & Bergman, ) and avoiding large wood (>10 cm in diameter; Antón et al ., ; Langford, Langford & Hawkins, ). The effect of large stream wood on salmonid behaviour is relatively well described in the literature (Fausch & Northcote, ; Gustafsson, Greenberg & Bergman, ) while fewer studies have examined the effect of FW (but see e.g.…”

Section: Introductionmentioning

confidence: 99%

Winter sheltering by juvenile brown trout (Salmo trutta) – effects of stream wood and an instream ectothermic predator

et al. 2016

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Summary In boreal streams, juvenile salmonids spend substantial amounts of time sheltering in the streambed and in stream wood, presumably as a means of protection against the physical environment and from terrestrial endothermic predators. Relatively little is known about sheltering by salmonids in response to instream ectothermic predators. We tested the effects of burbot (Lota lota) on the winter sheltering behaviour of PIT‐tagged 0+ brown trout (Salmo trutta) in daylight and darkness. Sheltering in the streambed by trout was studied in the presence and absence of fine wood bundles. We found that the use of streambed and fine wood was lower in darkness than in daylight. Availability of fine wood significantly decreased sheltering in the streambed, and this effect was more pronounced in daylight than in darkness. The presence of a burbot significantly decreased sheltering in the streambed, had no effect on use of fine wood and resulted in a higher number of exposed trout. Our results indicate that juvenile brown trout decrease streambed sheltering in response to a burrowing, ectothermic predator.

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“…Moreover, salmonid responses to wood seem partly to be the result of an interplay between fish size and the dimension of the wood, as large wood (LW) attracts brown trout ( Salmo trutta ) ≥10 cm (Fausch & Northcote ; Antón et al. ; White et al. ), whereas a low abundance of small brown trout (<7 cm) is reported for LW accumulations (Langford et al.…”

Section: Introductionmentioning

confidence: 99%

Effect of fine wood on juvenile brown trout behaviour in experimental stream channels

Enefalk

Bergman

2015

Ecology of Freshwater Fish

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In-stream wood can increase shelter availability and prey abundance for stream-living fish such as brown trout, Salmo trutta, but the input of wood to streams has decreased in recent years due to harvesting of riparian vegetation. During the last decades, fine wood (FW) has been increasingly used for biofuel, and the input of FW to streams may therefore decrease. Although effects of in-stream FW have not been studied as extensively as those of large wood (LW), it is probably important as shelter for small-sized trout. In a laboratory stream experiment, we tested the behavioural response of young-of-the-year wild brown trout to three densities of FW, with trout tested alone and in groups of four. Video recordings were used to measure the proportion of time allocated to sheltering, cruising and foraging, as well as the number of aggressive interactions and prey attacks. Cruising activity increased with decreasing FW density and was higher in the four-fish groups than when fish were alone. Foraging decreased and time spent sheltering in FW increased with increasing FW density. Our study shows that juvenile trout activity is higher in higher fish densities and that trout response to FW is related to FW density and differs from the response to LW as reported by others.

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Restoration of dead wood in Basque stream channels: effects on brown trout population

Cited by 29 publications

References 41 publications

Does it make economic sense to restore rivers for their ecosystem services?

Does it make economic sense to restore rivers for their ecosystem services?

Winter sheltering by juvenile brown trout (Salmo trutta) – effects of stream wood and an instream ectothermic predator

Effect of fine wood on juvenile brown trout behaviour in experimental stream channels

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