Aerobic respiration in riparian exchange zones of regulated river corridors

2021 ◽  
Author(s):  
Stephen B. Ferencz ◽  
M. Bayani Cardenas ◽  
Bethany T. Neilson
Keyword(s):  
Regulated River ◽  
Aerobic Respiration ◽  
River Corridors

scholarly journals Effects of River Regulation on Plant Dispersal and Vegetation

2015 ◽  
Vol 16 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Oksana Omelchuk ◽  
Bohdan Prots
Keyword(s):  
Alien Species ◽  
River Regulation ◽  
Regulated River ◽  
Plant Dispersal ◽  
Vegetation Zones ◽  
River Bed ◽  
Negative Effect ◽  
River Corridors ◽  
Herbaceous Perennial ◽  
Effective Distribution

Abstract This study compares the vegetation and seed deposits of free-flowing parts of a river with those regulated by straightening, as well as identifying the correlation between the breadth of the river-bed, existent vegetation and distribution of plant species along the river corridor. The 31 sampling plots in the Ukrainian Carpathians, at an equal distance of four km from each other, were positioned across different vegetation zones. Vegetation and seed bank data were collected. The study showed that effective distribution of plants has a place in native (non-regulated) river-corridors with a river-bed breadth of 15-30 m. The reduction and straightening of the river-bed decrease the number of species that can be dispersed along river. The percentage of seeds of alien species greatly increases, from 0.1% in the free-flowing to 10% in the regulated parts of rivers. River regulation causes transformation of native vegetation communities in these plots into associations of invasive herbaceous perennial species; such as associations of Helianthus tuberosus and Solidago gigantea. The analyses do not show a clear link between the breadth of the river-bed and number of invasive species in the vegetation community. The research suggests that river regulation has a clear negative effect on vegetation by decreasing the resistance of plant communities to alien species

scholarly journals Small-scale spatial analysis of river corridor plants distribution in the San River valley (SE Poland)

2014 ◽  
Vol 34 (1) ◽  
pp. 53-64
Author(s):  
Rafał Krawczyk
Keyword(s):  
Habitat Preferences ◽  
River System ◽  
River Valley ◽  
Regulated River ◽  
Medium Size ◽  
Small Scale ◽  
Grid Cells ◽  
Se Poland ◽  
River Corridors ◽  
River Corridor

Abstract Spatial distribution and habitat preferences of 55 river corridor plant species were analyzed on a local scale in the valley of a medium-size regulated river. The analysis was based on the results of a detailed mapping on a 50 km-long section of the Lower San River valley (366 cartogram cells of 1 square km). Selected species were divided into two groups: (1) strictly and (2) loosely confined to river corridors. River corridor plants were found throughout the valley (river channel, active and historical floodplain, older terraces, slopes); however, their frequency was diverse in particular areas. The highest concentrations were observed on the floodplain. Their number decreased towards the border areas of the valley. Species which were less confined to rivers were found more frequently in the valley (one species occupied, on average, 12.9% of grid cells), than plants strictly confined to the river system (one species occupied, on average, 5.9% of grid cells); however, the ranges of species of the second group were more restricted to the Holocene part of the valley, especially to the floodplain. River corridor plants were, ecologically, a highly diversified group. In the San river valley, they were found in riparian forests, pioneer ephemeral communities on the banks of water bodies, dry grasslands, meadows and old river beds; a lot of them grew in ruderal habitats.

Assessing and valuing ecosystem services for managing hydropower constructed rivers systems

2020 ◽  
Author(s):  
Hannu Marttila ◽  
Faisal Ashraf ◽  
Ali Torabi Haghighi ◽  
Seppo Hellsten ◽  
Maria Kopsakangas-Savolainen ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Regulated River ◽  
Migratory Fish ◽  
Benefit Analysis ◽  
Short Term ◽  
Hydropower Production ◽  
Increasing Demand ◽  
River Corridors

<p>Rivers developed for hydropower production are important electricity generators with an increasing role as a balancing power source in new wind-power dominated energy systems. However, hydropower constructed rivers also provide many ecosystem services, such as habitats for migratory fish species and opportunities for recreational activities. Currently, we see drastic changes in needs from society to use regulated river corridors for multiple purposes, and therefore, new approaches are needed to support the sustainable management of river resources. In our new EcoRiver-project we develop an integrated assessment framework and examine cost and benefits provided by hydropower constructed rivers. We use hydrodynamic modelling to quantify the ecosystem services and variability during short-term regulation practices (hydropeaking). Hydropower and energy markets modelling is used to examine the impacts of increasing demand flexibility on hydropower. Environmental valuation methods are applied to evaluate the ecosystem services monetarily. Finally, we integrate these methods for cost-benefit analysis in order to support well-informed decision making for river management.</p>

Population Characteristics and Feeding of Roach Rutilus rutilus in Small Regulated River of the Kyiv Polissya

2020 ◽  
Vol 56 (1) ◽  
pp. 42-48
Author(s):  
Ye. A. Gupalo ◽  
I. I. Abramyuk ◽  
S. A. Afanasyev ◽  
O. V. Manturova ◽  
Ye. V. Savchenko
Keyword(s):  
Rutilus Rutilus ◽  
Population Characteristics ◽  
Regulated River ◽  
Roach Rutilus Rutilus

PENGARUH KONDISI EKOSISTEM DARAT KORIDOR SUNGAI TERHADAP DANAU RAWA PENING

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
E. Hanggari Sittadewi
Keyword(s):  
Water Quality ◽  
Water Hyacinth ◽  
River Corridors ◽  
River Corridor ◽  
Environment Degradation

Environment degradation in Rawa Pening’s lake is caused of descend lake’s functions for some potentions and activities around the lake. Some problems in the Rawa Pening’s lake has emerged i.e : decrease water quality of lake, abundance of water hyacinth growth and increase sediment in the bottom lake. A research about infl uences of land ecosystem on Panjang and Galeh river corridors for Rawa Pening’s lake has been done. Two rivers named Galeh and Panjang are the largest water contribution in Rawa Pening’s lake. That caused the land characteristic ecosystem of that river corridors gives infl uences in the Rawa Pening’s lake.Key words: land ecosystem, river corridor, water contribution, Rawa Pening Lake.

A New Life for the St. Croix River

1988 ◽  
Vol 23 (4) ◽  
pp. 568-577
Author(s):  
Harold S. Bailey
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Discharge Rate ◽  
Paper Mill ◽  
Regulated River ◽  
Secondary Treatment ◽  
Pulp And Paper Mill ◽  
Oxygen Regime ◽  
Oxygen Concentrations

Abstract The water quality of the upper 110 kilometres of the St. Croix River is considered to be pristine. A major industrial discharge renders the lower 14 kilometres of the river a water quality limited segment. Prior to 1970 the Georgia-Pacific Pulp and Paper Mill at Woodland, Maine, discharged untreated effluent directly into the river causing dissolved oxygen concentrations to drop well below 5 mg/L, the objective chosen in the interest of restoring endemic fish populations. Since 1972, the Mill has installed primary and secondary treatment, regulated river discharge rate and effluent composition which has greatly improved the summer dissolved oxygen regime. By 1980, dissolved oxygen concentrations were generally above 5.0 mg/L and restocking the river with Atlantic Salmon (Salmo salar) was initiated.

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