Landscape Reading for Alpine Rivers: A Case Study from the river Biya

Schmalfuß, Lisa; Hauer, Christoph; Yanygina, L. V.; Schletterer, Martin

doi:10.24057/2071-9388-2022-046

Cited by 4 publications

(1 citation statement)

References 86 publications

(86 reference statements)

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“…The middle course extends to river kilometer 410, where the Sumulta River joins the Katun on the orographic right. The lower course extends from Sumulta River to the confluence with the Biya where both rivers from the Ob near the town of Biysk (Sapozhnikov 1949;Schmalfuß et al 2022). The flow regime of the Katun can be described according to FOEN (2013) as glacio-nival.…”

Section: Study Areamentioning

confidence: 99%

Large-Scale Hydromorphological Characteristics Of The Proglacial River Katun (Ob Headwaters)

Seidl¹,

Reisenbüchler²,

Rutschmann³

et al. 2023

GES

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During the industrialization in Europe, rivers were straightened and designed to fit human activities, thus nowadays only a few natural river systems remain as reference conditions as well as guiding principles for river restoration projects. Therefore, the natural state of some river types is often described using historic records and maps. This study aims to analyze the key characteristics of a pristine proglacial river Katun in the Altai mountains and contribute to the knowledge about reference conditions. For this purpose, hydromorphological characteristics like slope, sinuosity and river width of the river Katun were analysed and summarized using different GIS techniques. Additionally, pebble counts were carried out to assess the changing sediment composition along the longitudinal continuum. Combined with River Habitat Surveys and a one-dimensional flow simulation using HEC-RAS it was possible to give a holistic overview of the dynamic fluvial system Katun in its upper, middle and lower reaches. The results confirmed the relationship between the river and its surrounding topography as they clearly show the lateral development of the Katun. As shown for the individual parameters (e.g., slope, width, depth, flow velocity, shear stress), they influence each other and are strongly dependent and characteristic for each river section. In the context of revitalisation of straightened and / or channelized river courses, it is important to focus on the processes of this interaction and provide suitable space for lateral expansion. The study can be seen as a recommendation on how to analyse hydromorphological characteristics of fluvial systems as well as to establish guiding principles in river restoration using remote sensing.

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Section: Study Areamentioning

confidence: 99%

Large-Scale Hydromorphological Characteristics Of The Proglacial River Katun (Ob Headwaters)

Seidl¹,

Reisenbüchler²,

Rutschmann³

et al. 2023

GES

Self Cite

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Macroinvertebrates reveal environmental gradients: methods and method development in the Ob River basin

Yanygina,

Schletterer

2023

Hydrobiologia

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The Ob is the seventh longest river in the world and its length (including the largest tributary Irtysh) is 5410 km. The huge size of the Ob River catchment and diverse natural resources of the region give rise to numerous anthropogenic factors affecting aquatic ecosystems. The patterns of longitudinal changes in the composition aquatic communities are still uncertain, especially for large rivers. To assess the role of environmental factors in the structure of communities, we analyzed longitudinal changes in the species richness, abundance, and biomass of macroinvertebrate communities along a 3363-km section of the Ob River. The trends of longitudinal changes in macroinvertebrate communities differed significantly on sandy, silty, and rocky substrates. For sandy substrates, an important factor in the separation of communities was the Novosibirsk Reservoir, for rocky substrates—the influence of the Altai Mountains, and for silty substrates—the location of large cities. The results emphasize the importance of taking into account the differences in bottom sediments and the patterns of longitudinal changes in bottom communities for bio-assessment of the ecological status of large rivers. Overall, we propose macroinvertebrates for bioindication along the Ob River, with regard to type, anthropogenic impact, stress factors, and response of benthic communities.

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Zooplankton as an indicator of hydrological connectivity of the main channel and the floodplain in a large river system

Yanygina,

Burmistrova,

Kotovshchikov

et al. 2023

Hydrobiologia

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The connectivity of the river–floodplain system during floods plays a decisive role in organisms/matter contribution to the ecosystems of large lowland rivers. We hypothesized that the direction of water-level trends during flood was crucial for zooplankton release from the floodplain into the river channel. The seven-year study of zooplankton in the large plain Ob river suggest that at the inundated floodplain even a slight water level fall brings to plankton release from the floodplain into the river thus causing its abundance boom in the main channel. At water-level stabilization or rise, zooplankton communities of floodplain become isolated from the channel that ceases the recruits’ inflow from the floodplain and brings to a sharp drop in number of river zooplankton. Therefore, it is necessary to take into account dynamics trends (i.e., fall or rise) in river water level when assessing zooplankton density in large lowland rivers. The analysis of such trends should become the basis for predicting of river zooplankton abundance and assessing changes in feeding conditions of fish during the growing season.

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Landscape Reading for Alpine Rivers: A Case Study from the river Biya

Cited by 4 publications

References 86 publications

Large-Scale Hydromorphological Characteristics Of The Proglacial River Katun (Ob Headwaters)

Large-Scale Hydromorphological Characteristics Of The Proglacial River Katun (Ob Headwaters)

Macroinvertebrates reveal environmental gradients: methods and method development in the Ob River basin

Zooplankton as an indicator of hydrological connectivity of the main channel and the floodplain in a large river system

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