Journal of ecohydraulics最新文献_第2页

Forecasting green tide events in a semi-closed tidal flat using artificial intelligence and environmental big data 基于人工智能和环境大数据的半封闭潮滩绿潮事件预测

Journal of ecohydraulics Pub Date : 2023-04-27 DOI: 10.1080/24705357.2023.2204107

Eiji Yauchi, Shun Wakabayashi, R. Oda

引用次数: 0

Evaluating Apple iPhone LiDAR measurements of topography and roughness elements in coarse bedded streams 评估苹果iPhone激光雷达测量的地形和粗糙元素在粗层状溪流

Journal of ecohydraulics Pub Date : 2023-04-23 DOI: 10.1080/24705357.2023.2204087

A. Monsalve, E. Yager, D. Tonina

引用次数: 1

Flood impacts on vegetation and hydraulics in ephemeral channels and dynamics of recovery 洪水对短暂河道植被和水力学的影响及恢复动力学

Journal of ecohydraulics Pub Date : 2023-03-23 DOI: 10.1080/24705357.2023.2189168

J. Hooke

{"title":"Flood impacts on vegetation and hydraulics in ephemeral channels and dynamics of recovery","authors":"J. Hooke","doi":"10.1080/24705357.2023.2189168","DOIUrl":"https://doi.org/10.1080/24705357.2023.2189168","url":null,"abstract":"Abstract Vegetation can have a particularly strong effect on hydraulics and processes in dryland, ephemeral channels, where plants often occupy the channel bed. To understand the hydraulics, feedback effects and ecological dynamics for use in modelling and management, data on flow effects and vegetation dynamics are needed. Evidence from sites in southeast Spain, monitored for decades, is analysed here in relation to an extreme flood in September 2012 to identify thresholds for damage and destruction of plants, to assess rates of recovery, and to quantify effects of varying vegetation density and height on channel hydraulics. Repeated quadrat measurements provide data on vegetation cover, health and heights of plants, and were analysed in relation to measured flow stage and cross-section topographic surveys before, after and since the 2012 flood. Much of the vegetation was destroyed in the flood event, including the dominant Retama, resetting the vegetation. Threshold levels of shear stress for mortality and removal of the plants have been calculated. Rates of recovery have varied spatially, with little regrowth in main channels or on elevated floodplains, but strong growth occurring on bars. The different degrees of vegetation cover and height are calculated to have a very large effect on the flow hydraulics. The results support the proposal that dense vegetation cover can be highly effective in channel management by slowing flow, reducing erosion and increasing sedimentation.","PeriodicalId":93201,"journal":{"name":"Journal of ecohydraulics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82017089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wall diffuser velocity effects on American Shad (Alosa sapidissima) inside a fishway entrance channel 鱼道入口通道内壁面扩散器速度对美洲鲥鱼的影响

Journal of ecohydraulics Pub Date : 2023-03-09 DOI: 10.1080/24705357.2023.2176376

Kevin B. Mulligan, M. Rojas, B. Towler, B. Lake, R. Palmer

引用次数: 0

How to build vegetation patches in hydraulic studies: a hydrodynamic-ecological perspective on a biological object 如何在水力学研究中建立植被斑块:一个生物对象的水动力生态学视角

Journal of ecohydraulics Pub Date : 2023-02-13 DOI: 10.1080/24705357.2023.2176375

Loreta Cornacchia, Garance Lapetoule, S. Licci, Hugo Basquin, S. Puijalon

{"title":"How to build vegetation patches in hydraulic studies: a hydrodynamic-ecological perspective on a biological object","authors":"Loreta Cornacchia, Garance Lapetoule, S. Licci, Hugo Basquin, S. Puijalon","doi":"10.1080/24705357.2023.2176375","DOIUrl":"https://doi.org/10.1080/24705357.2023.2176375","url":null,"abstract":"Abstract Vegetation in freshwater and coastal ecosystems modifies flows, retains sediment, protects banks and shorelines from erosion. Hydraulic laboratory studies with live vegetation or artificial plant mimics, or numerical models with abstracted patches, are often used to quantify the effects of vegetation on water flow and sedimentation. However, the choice of plant and patch characteristics is often not supported by field observations of patch dimensions, density or spacing between consecutive patches. The discrepancy between plants in natural conditions and in flume experiments or numerical studies may affect the relevance of these findings for natural ecosystems. In this study, we provide guidelines for building realistic vegetation patches in hydraulic studies. We collected data on four species of fully submerged freshwater aquatic macrophytes that can grow into well-defined patches. We considered three relevant levels: individual plants (inside patches), isolated patches and multiple neighbouring patches. At the plant level, we observed significant differences in biomechanical traits (Young’s modulus, flexural stiffness), resulting in stem Cauchy numbers ranging from 85.25 to 325.84, and leaf Cauchy numbers from 163.81 to 2003.97. At the patch level, we found significant relationships between patch length, width and height, showing covariation among different patch characteristics. The relationships among patch dimensions differed significantly among sampling sites for three of the four species, suggesting high intraspecific variability in patch sizes. By providing a first set of guidelines for choosing correct and ecologically relevant plant characteristics, this dataset aims to improve our understanding of the complex processes occurring inside and around submerged vegetated patches.","PeriodicalId":93201,"journal":{"name":"Journal of ecohydraulics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80356030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Chinook Salmon habitat evolution following river restoration, drought, and flood 奇努克鲑鱼栖息地在河流恢复、干旱和洪水后的演变

Journal of ecohydraulics Pub Date : 2023-01-16 DOI: 10.1080/24705357.2022.2162987

Rocko A. Brown, K. Sellheim, Jesse T. Anderson, J. Merz

引用次数: 0

Exploring willow decline in an over-greening riparian corridor (River Jarama, Spain) 探索过度绿化的河岸走廊中柳树的衰落(西班牙，贾拉马河)

Journal of ecohydraulics Pub Date : 2023-01-04 DOI: 10.1080/24705357.2022.2162988

D. García de Jalón, Daniel Díaz-Alba, V. Martínez-fernández, Paula Lucía-Núñez, M. González del Tánago

引用次数: 0

Quantifying fluvial habitat changes due to multiple subsequent floods in a braided alpine reach 高山辫状河段多次洪水后河流生境变化的定量分析

Journal of ecohydraulics Pub Date : 2022-08-26 DOI: 10.1080/24705357.2022.2105755

Erik van Rooijen, A. Siviglia, D. Vetsch, R. Boes, D. Vanzo

引用次数: 3

A scaled Denil fishway for upstream passage of Arctic Grayling 北极灰鲑上游通道中有鳞的丹尼尔鱼道

Journal of ecohydraulics Pub Date : 2022-08-10 DOI: 10.1080/24705357.2022.2105756

Katey Plymesser, Matt Blank, Megan Conley, K. Kappenman, J. Cahoon, David R. Dockery, A. Zale

引用次数: 4

Characterizing egg transport of Chondrostoma nasus (L.): a combined laboratory and field experiment 鼻窦软骨瘤(L.)卵细胞运输的特征:实验室和野外联合实验

Journal of ecohydraulics Pub Date : 2022-07-25 DOI: 10.1080/24705357.2022.2102089

Susanne Scherbaum, Christoffer Nagel, Y. Fuchs, J. Geist

引用次数: 0