Freshwater habitat of Atlantic salmon (<i>Salmo salar</i>)

Bardonnet, Agnès; Baglinière, Jean-Luc J.-L.

doi:10.1139/f99-226

Cited by 114 publications

(108 citation statements)

References 65 publications

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“…Potentially important spatial structures can be identified across a wide range of scales, from the properties of individual sediment particles, through the arrangement of biotopes in a reach, to the large-scale spatial context, including the configuration of drainage networks and neighbouring catchments. Salmonids are among the best-studied organisms in the context of spatial structure, because of the long-standing recognition of both their migratory movements and the use of different habitat types for spawning and for different developmental stages (Bardonnet and Baglinere, 2000). The role of barriers } especially artificial features (e.g.…”

Section: The Role Of Spatial Structurementioning

confidence: 99%

Integrating ecology with hydromorphology: a priority for river science and management

Vaughan¹,

Diamond²,

Gurnell³

et al. 2007

Aquatic Conservation

282

217

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ABSTRACT1. The assessment of links between ecology and physical habitat has become a major issue in river research and management. Key drivers include concerns about the conservation implications of human modifications (e.g. abstraction, climate change) and the explicit need to understand the ecological importance of hydromorphology as prescribed by the EU's Water Framework Directive. Efforts are focusing on the need to develop 'ecohydromorphology' at the interface between ecology, hydrology and fluvial geomorphology. Here, the scope of this emerging field is defined, some research and development issues are suggested, and a path for development is sketched out.2. In the short term, major research priorities are to use existing literature or data better to identify patterns among organisms, ecological functions and river hydromorphological character. Another early priority is to identify model systems or organisms to act as research foci. In the medium term, the investigation of patternprocesses linkages, spatial structuring, scaling relationships and system dynamics will advance mechanistic understanding. The effects of climate change, abstraction and river regulation, eco-hydromorphic resistance/ resilience, and responses to environmental disturbances are likely to be management priorities. Large-scale catchment projects, in both rural and urban locations, should be promoted to concentrate collaborative efforts, to attract financial support and to raise the profile of eco-hydromorphology.3. Eco-hydromorphological expertise is currently fragmented across the main contributory disciplines (ecology, hydrology, geomorphology, flood risk management, civil engineering), potentially restricting research and development. This is paradoxical given the shared vision across these fields for effective river management based on good science with social impact. A range of approaches is advocated to build sufficient, integrated capacity that will deliver science of real management value over the coming decades.

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Section: The Role Of Spatial Structurementioning

confidence: 99%

Integrating ecology with hydromorphology: a priority for river science and management

Vaughan¹,

Diamond²,

Gurnell³

et al. 2007

Aquatic Conservation

282

217

View full text Add to dashboard Cite

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“…The increased energy expenditure associated with obstacle passage may translate into a subsequent cost on gonad production and spawning activity. In Atlantic salmon, energetic costs cannot be recovered as adult salmon cease feeding while in fresh water (Mills, 1989;Bardonnet & Baglinière, 2000). Ultimately, energy loss associated with obstacle navigation has the potential to reduce the overall fitness of the individual.…”

Section: Introductionmentioning

confidence: 99%

The impact of a small-scale riverine obstacle on the upstream migration of Atlantic Salmon

et al. 2017

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The behaviour of returning Salmo salar (Linnaeus, 1758) approaching, and attempting to pass low-head weirs remains relatively unknown. A radio telemetry array was created at a low-head weir to enable the behaviour of S. salar (n = 120) to be observed as they approached and attempted to pass the barrier. The majority of fish successfully passed the barrier on their first or second attempt, some individuals required 11 attempts prior to successful passage occurring. Mean delay at the barrier per fish was 47.8 h (±SD 132.0 h), range 15 min to 31 days. Passage success on a fish's initial attempt was significantly predicted by the amount of searching a fish undertook, fork length, and fat content. Fish were more likely to have a successful first passage attempt if it was smaller with a low fat content and exerted a greater effort in searching for a passage channel. Small-scale barriers cause delays and increased energy expenditure in migrating fish. Barriers may be creating an anthropogenic selection pressure for traits which enable passage success. The impact of a delay at a barrier and increased energy expenditure on reproduction and gonad development remains unknown but is likely to be negatively impacted by instream anthropogenic structures.

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“…To build the fuzzy logic Atlantic salmon parr rearing habitat model (Mocq et al, 2013), three of the most important variables defining salmon distribution and abundance, that is depth, velocity and mean substrate diameter (Armstrong, Kemp, Kennedy, Ladle & Milner, 2003;Bardonnet & Baglinière, 2000;Heggenes, 1990), were chosen as input variables, and the Habitat Suitability Index (HSI) as the output variable. Each variable domain was split into three categories defined by combinations of linear membership functions, which constitute the fuzzy sets.…”

Section: Fuzzy Modelmentioning

confidence: 99%

Do habitat measurements in the vicinity of Atlantic salmon (Salmo salar) parr matter?

Mocq

St‐Hilaire

Cunjak

2017

Fisheries Management Eco

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Atlantic salmon, Salmo salar L., parr habitat characterisation is usually performed by in situ measures of key environmental variables taken at the exact fish location if the fishing gear allows precise pinpointing of this location, or in large sampling sections covering a river reach or mesohabitat, often ignoring variability in the immediate vicinity around individual fish. These data may be critically important in the development and validation of habitat preference models. The influences of seven increasing distances of measures, the variation of the number of considered measures and the depth of velocity measurement (bottom or 0.6 of the depth) in the calculations of HSI (Habitat Suitability Index) from a multiple-experts fuzzy model of Atlantic salmon parr habitat were tested. When a parr was present, six measures collected in a 50-cm radius around the fish to provide an average measure as input data and velocity meas-

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Freshwater habitat of Atlantic salmon (Salmo salar)

Cited by 114 publications

References 65 publications

Integrating ecology with hydromorphology: a priority for river science and management

Integrating ecology with hydromorphology: a priority for river science and management

The impact of a small-scale riverine obstacle on the upstream migration of Atlantic Salmon

Do habitat measurements in the vicinity of Atlantic salmon (Salmo salar) parr matter?

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