Modelling future hydroclimatic effects on the &amp;lt;i&amp;gt;Coregonus migratorius&amp;lt;/i&amp;gt; spawning migration in the Selenga River and Lake Baikal

Moreydo, Vsevolod; Millionshchikova, T. D.; Chalov, Sergey

doi:10.5194/piahs-381-113-2019

Cited by 3 publications

(4 citation statements)

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“…Модель позволяет с высокой точностью воспроизводить по данным метеорологического реанализа ряды наблюденного речного стока, в том числе тренды в течение последнего маловодного периода (рис. 1), и может быть использована для оценки влияния современных и будущих многолетних изменений климата на водный режим [5,10]; на экологическое состояние бассейна Селенги, например на гидрологические условия нереста Байкальского омуля (Coregonus migratorius; [8]); и влияния естественной и антропогенной составляющих изменения климата на речной сток [7]. Анализ чувствительности гидрологической системы бассейна р. Селенги к изменению климатических параметров показал, что при росте температуры воздуха коэффициенты вариации максимального стока увеличиваются.…”

Section: применения модели формирования речного стока Ecomag в байкал...unclassified

“…Для оценки воздействия изменения климата на гидрологические условия нереста Байкальского омуля (Coregonus migratorius) в р. Селенге использовался мультимодельный подход: гидрологическая модель, прогнозирующая будущие гидрологические условия, а для оценки нерестового поведениярегрессионная модель преимущественного расположения нерестилищ в зависимости от уровня воды реки Селенги [3]. Полученные прогнозы изменения речного стока указывают на то, что границы расположения нерестилищ байкальского омуля будут проходить значитель-но выше по течению от дельты реки Селенги (почти в 2 раза) в более благоприятные для нереста с экологической точки зрения места [8]. Несмотря на этот возможный положительный эффект, прогнозируемое общее снижение водности Селенги в XXI веке, а также усиление изменчивости стока, могут негативно отразиться на качестве воды, что также является лимитирующим фактором в нерестовом цикле байкальского омуля.…”

Section: применения модели формирования речного стока Ecomag в байкал...unclassified

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Application of the Ecomag Hydrological Model in the Lake Baikal Region

Moreido¹,

Millionshchikova²,

Kalugin³

2022

Ecological Problems of Lake Baikal Basin

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Inflow into the Baikal Lake from its tributaries draining some 571 000 sq. km is highly vulnerable to regional aspects of global climate change. The main tributary to Lake Baikal -the Selenga River basin -has been experiencing severe drought conditions for more than two decades since 1995, and has only recently started recovering from the decreasing trend in annual runoff. We discuss the applications of hydrological model developed at the Water Problems Institute of the Russian Academy of Sciences, ECOMAG, to assessing the current and future conditions of runoff and its aspects regarding the attribution to natural and anthropogenic variability, and implications on the state of the ecosystem. Several projections for the XXI century demonstrate the intensified drought conditions, which can be attributed to anthropogenic influence to global climate, and the positive and negative effects of this on the spawning of fish communities in the Selenga River.

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Section: применения модели формирования речного стока Ecomag в байкал...unclassified

Application of the Ecomag Hydrological Model in the Lake Baikal Region

Moreido¹,

Millionshchikova²,

Kalugin³

2022

Ecological Problems of Lake Baikal Basin

View full text Add to dashboard Cite

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“…A number of recent studies have indicated the impact of modified flows on various species of aquatic ecosystems: from primary producers diatoms and macrophytes [24], butterflies, grasshoppers, vascular plants [25], to birds [26]. However, much of the literature pays particular attention to the multiple impacts of altered flow characteristics on fish communities [27][28][29][30][31][32][33][34][35], because fish are the most affected by hydrological disturbances among other groups of aquatic organisms [36,37].…”

Section: Introductionmentioning

confidence: 99%

The Combined Impact of Hydropower Plants and Climate Change on River Runoff and Fish Habitats in Lowland Watersheds

Akstinas

Virbickas

Kriaučiūnienė

et al. 2021

Water

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Aquatic ecosystems are particularly vulnerable to anthropogenic activity and climate change. The changes in flow regimes in Lithuanian lowland rivers due to the operation of hydropower plants (HPPs) and the impact of altered flow on some fish species have already been studied. The impact of climate change on future natural river runoff and the structure of fish assemblages was also investigated. However, it is still unknown how the combined effect of climate change and flow regulation related to hydropower generation may affect fish assemblages in the downstream river reaches below the Lithuanian HPPs. In this study, the physical habitat modelling system MesoHABSIM was used to simulate spatial and temporal changes in aquatic habitats availability for different fish species under the influence of HPP at different climate change scenarios. Changes in the available habitat were assessed for common fish species in four HPP-affected rivers representing different hydrological regions of Lithuania. The modelling results showed that the operation of HPP under climate change conditions in most rivers could be beneficial for small benthic fish species such as gudgeon Gobio gobio and stone loach Barbatula barbatula. Meanwhile, for larger fish species (e.g., chub Squalius cephalus and vimba Vimba vimba) the alteration in the temporal availability of suitable habitat was relatively higher.

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“…Therefore, it is important to monitor, evaluate, and take steps to improve these processes in the areas of natural, social, and economic importance. It is important to study ecohydrological processes changes in the most sensitive areas, one of which is the Lake Baikal Basin [4,5].…”

Section: Introductionmentioning

confidence: 99%

Study on Relationship of Land Cover Changes and Ecohydrological Processes of the Tuul River Basin

et al. 2021

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The Tuul River Basin is the most important socioeconomic and political base area of Mongolia. Therefore, studying the interrelationships between changes in the ecohydrological processes of this basin and its land cover is of great importance for maintaining sustainability and the environment. This study investigated the annual average air temperature, total annual precipitation, and river discharge variability, and land cover changes at selected stations of the basin by using the hydrometeorological analysis, satellite analysis, and land cover determination statistical analysis. During the study period, the average annual air temperature rose from −1.5 °C to +0.3 °C (1.8 °C 361 °C). The average annual precipitation exhibits relatively low change during this period. River discharge varied during the study period. A significant decreasing trend in river discharge was observed at the Terelj (φ = −2.72) and Ulaanbaatar (φ = −5.63) stations, whereas the other stations, Altanbulag, Lun, and Orkhontuul, showed a significant increasing trend. During the study period, changes in land cover were directly related to main hydrometeorological parameters. Between 2000 and 2020, the amount of grassland decreased by 319.67 km2, while the area of water bodies increased by 28.36 km2. In the study area, mainly water bodies and sensitive areas of the land cover types were changed due to changes in precipitation. Studies in the arid and semiarid regions of Central Asia show that changes of ecohydrological processes have a significant impact on land cover changes.

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Modelling future hydroclimatic effects on the <i>Coregonus migratorius</i> spawning migration in the Selenga River and Lake Baikal

Cited by 3 publications

References 38 publications

Application of the Ecomag Hydrological Model in the Lake Baikal Region

Application of the Ecomag Hydrological Model in the Lake Baikal Region

The Combined Impact of Hydropower Plants and Climate Change on River Runoff and Fish Habitats in Lowland Watersheds

Study on Relationship of Land Cover Changes and Ecohydrological Processes of the Tuul River Basin

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