Vegetation of the European mountain river gravel bars: A formalized classification

2020 ◽  
Author(s):  
Veronika Kalníková ◽  
Kryštof Chytrý ◽  
Claudia Biţa‐Nicolae ◽  
Francesco Bracco ◽  
Xavier Font ◽  
...  
Keyword(s):  
Mountain River ◽  
Gravel Bars ◽  
European Mountain

Islands in a European mountain river: Linkages with large wood deposition, flood flows and plant diversity

Geomorphology ◽  
2013 ◽  
Vol 202 ◽  
pp. 115-127 ◽  
Author(s):  
Paweł Mikuś ◽  
Bartłomiej Wyżga ◽  
Ryszard J. Kaczka ◽  
Edward Walusiak ◽  
Joanna Zawiejska
Keyword(s):  
Plant Diversity ◽  
Mountain River ◽  
Large Wood ◽  
European Mountain ◽  
Flood Flows

scholarly journals Bioaccumulations of heavy metals in submerged macrophytes in the mountain river Biała Lądecka (Poland, Sudety Mts.)

2015 ◽  
Vol 41 (4) ◽  
pp. 81-90 ◽  
Author(s):  
Przemysław Pokorny ◽  
Joanna Pokorny ◽  
Wojciech Dobicki ◽  
Magdalena Senze ◽  
Monika Kowalska-Góralska
Keyword(s):  
Heavy Metals ◽  
Submerged Macrophytes ◽  
Catchment Management ◽  
Mountain River ◽  
Mountain Rivers ◽  
Submerged Plants ◽  
Fontinalis Antipyretica ◽  
Bioconcentration Factors ◽  
European Mountain ◽  
Cu And Zn

Abstract The study was conducted on the Biała Lądecka River which is a mountain river. It is similar to many European mountain rivers in terms of hydromorphology and catchment management. The aim of this study was to determine the bioconcentration factors of heavy metals (Pb, Cd, Hg, Ni, Cr, Cu and Zn) in Ranunculus aquatile (L.) Dumort., Fontinalis antipyretica (L. ex Hedw.), and Lemanea fluviatilis (L.) C.Ag. The content of metals in water, sediment, and submerged plants was determined. The metal concentrations in plants can be arranged as follows: Hg < Cd < Cr < Ni < Cu < Pb <Zn. The highest concentrations of Hg, Ni, Cr, and Cu were observed in F. antipyretica, but the highest concentrations of Pb, Cd, and Zn were in R. aquatile. L. fluviatilis always contained the least amounts of heavy metals. Bioconcentration factors (BCFs) were lowest in L. fluviatilis and highest in F. antipyretica. Among the analyzed metals, plants accumulated the highest amount of Zn, and the least of Hg. The BCFs for Zn were from 24111 (in L. fluviatilis) to 97574 (in R. aquatile), and BCFs for Hg were from 29 (in L. fluviatilis) to 226 (in F. antipyretica).

scholarly journals Insights on the Impacts of Hydroclimatic Extremes and Anthropogenic Activities on Sediment Yield of a River Basin

Earth ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 32-50
Author(s):  
Rocky Talchabhadel ◽  
Jeeban Panthi ◽  
Sanjib Sharma ◽  
Ganesh R. Ghimire ◽  
Rupesh Baniya ◽  
...  
Keyword(s):  
Suspended Sediment ◽  
River Basin ◽  
Extreme Precipitation ◽  
Suspended Sediment Concentration ◽  
Anthropogenic Activities ◽  
Sediment Concentration ◽  
Sediment Flux ◽  
Mountain River ◽  
Ecological Processes ◽  
Precipitation Indices

Streamflow and sediment flux variations in a mountain river basin directly affect the downstream biodiversity and ecological processes. Precipitation is expected to be one of the main drivers of these variations in the Himalayas. However, such relations have not been explored for the mountain river basin, Nepal. This paper explores the variation in streamflow and sediment flux from 2006 to 2019 in central Nepal’s Kali Gandaki River basin and correlates them to precipitation indices computed from 77 stations across the basin. Nine precipitation indices and four other ratio-based indices are used for comparison. Percentage contributions of maximum 1-day, consecutive 3-day, 5-day and 7-day precipitation to the annual precipitation provide information on the severity of precipitation extremeness. We found that maximum suspended sediment concentration had a significant positive correlation with the maximum consecutive 3-day precipitation. In contrast, average suspended sediment concentration had significant positive correlations with all ratio-based precipitation indices. The existing sediment erosion trend, driven by the amount, intensity, and frequency of extreme precipitation, demands urgency in sediment source management on the Nepal Himalaya’s mountain slopes. The increment in extreme sediment transports partially resulted from anthropogenic interventions, especially landslides triggered by poorly-constructed roads, and the changing nature of extreme precipitation driven by climate variability.

Reach-scale channel geometry of a mountain river

2004 ◽  
Vol 29 (8) ◽  
pp. 969-981 ◽  
Author(s):  
Ellen Wohl ◽  
Jessica N. Kuzma ◽  
Nancy E. Brown
Keyword(s):  
Mountain River ◽  
Channel Geometry

The Demise of European Mountain Pastoralism: Spain 1500–2000

2009 ◽  
Vol 13 (2) ◽  
pp. 124-145 ◽  
Author(s):  
Fernando Collantes
Keyword(s):  
European Mountain

scholarly journals A novel, multipartite, negative-strand RNA virus is associated with the ringspot disease of European mountain ash (Sorbus aucuparia L.)

2007 ◽  
Vol 88 (4) ◽  
pp. 1337-1346 ◽  
Author(s):  
Nicole Mielke ◽  
Hans-Peter Muehlbach
Keyword(s):  
Rna Virus ◽  
Plant Viruses ◽  
Glycoprotein Precursor ◽  
Structure Comparison ◽  
Viral Rnas ◽  
Pathogenic Virus ◽  
Mountain Ash ◽  
The Family ◽  
European Mountain ◽  
Novel Virus

Four RNAs from a new plant-pathogenic virus, which we have tentatively named European mountain ash ringspot-associated virus (EMARAV), were identified and sequenced completely. All four viral RNAs could be detected in previous double-stranded RNA preparations. RNA 1 (7040 nt) encodes a protein with similarity to the RNA-dependent RNA polymerase of different members of the Bunyaviridae, a family containing five genera with viruses infecting invertebrates, vertebrates and plants. RNA 2 (2335 nt) encodes a 75 kDa protein containing a conserved motif of the glycoprotein precursor of the genus Phlebovirus. Immunological detection indicated the presence of proteins with the expected size of the precursor and one of its processing products. The amino acid sequence of protein p3 (35 kDa) encoded by RNA 3 shows similarities to a putative nucleocapsid protein of two still unclassified plant viruses. The fourth viral RNA encodes a 27 kDa protein that has no significant homology to any known protein. As is typical for members of the family Bunyaviridae, the 5′ and 3′ ends of all viral RNAs are complementary, which allows the RNA to form a panhandle structure. Comparison of these sequences demonstrates a conserved terminal part of 13 nt, similar to that of the bunyaviral genus Orthobunyavirus. Despite the high agreement of the EMARAV genome with several characteristics of the family Bunyaviridae, there are a few features that make it difficult to allocate the virus to this group. It is therefore more likely that this plant pathogen belongs to a novel virus genus.

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