scholarly journals THE ROLE OF TECTONICS IN THE FORMATION OF SMALL WATER OBJECTS

2018 ◽  
Author(s):  
Е.В. Кюль ◽  
Л.И. Канкулова
Keyword(s):  
Large Scale ◽  
Practical Importance ◽  
Water Bodies ◽  
Small Water ◽  
Fault Type ◽  
Aquifer Systems ◽  
Tectonic Disturbances ◽  
Almost All ◽  
First Time ◽  
Small Water Bodies

В статье приведены результаты площадной оценки распределения малых водных объектов на территории КБР. При инвентаризации описаны 83 объекта, 75 из которых составляют родники. Практически все они приурочены к таким типам водоносных систем, как трещинно-жильные воды и воды зон тектонических нарушений. Прослеживается чёткая взаимосвязь между разрывными тектоническими нарушениями, оползневыми массивами и родниками трещинно-тектонического (разломного) типа. Масштабные работы по данной проблеме исследований на территории КБР проводятся впервые и имеют достаточно большое практическое значение. В дальнейшем, при определении рационального использования малых водных объектов в хозяйственных целях необходимо проведение комплекса специализированных (гидрохимических, экологических и др.) исследований. The article presents the results of an area assessment of the distribution of small water bodies in the KBR. The inventory describes 83 objects, 75 of which are springs. Almost all of them are confined to such types of aquifer systems as fractured-vein water and water zones of tectonic disturbances. The correlation between the discontinuous tectonic faults, landslides arrays and education of the springs are fracture-tectonic(fault) type. Large – scale work on this problem of research on the territory of the KBR is carried out for the first time and are of great practical importance. Further, in determining the rational use of small water bodies for economic purposes it is necessary to conduct complex specialized investigations (hydrochemical, environmental, etc.).

scholarly journals Gyraulus chinensis (Dunker, 1848) – a new greenhouse species for the Czech Republic (Gastropoda: Planorbidae)

2006 ◽  
Vol 5 ◽  
pp. 25-28 ◽  
Author(s):  
Luboš Beran ◽  
Peter Glöer
Keyword(s):  
Czech Republic ◽  
East Asia ◽  
Water Bodies ◽  
The Czech Republic ◽  
Small Water ◽  
First Time ◽  
Small Water Bodies

Gyraulus chinensis (Dunker, 1848), a planorbid snail native to South and East Asia and living in small water bodies, has been found in two greenhouses, the first time in the Czech Republic. Its occurrence in other greenhouses in the Czech Republic is possible. Survival of this snail in nature is considered unlikely, but it might be possible in artificially heated environments

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

2009 ◽  
Vol 38 (2) ◽  
Author(s):  
Natalia Kuczyńska-Kippen ◽  
Barbara Nagengast ◽  
Tomasz Joniak
Keyword(s):  
Water Bodies ◽  
Small Water ◽  
Biometric Parameters ◽  
Zooplankton Communities ◽  
The Impact ◽  
Small Water Bodies

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

Exploring the potential of small water bodies as an integrative management tool for fisheries production

2021 ◽  
Author(s):  
Christopher Mulanda Aura ◽  
Ruth Lewo Mwarabu ◽  
Chrisphine S. Nyamweya ◽  
Horace Owiti ◽  
Collins Onyango Ongore ◽  
...  
Keyword(s):  
Water Bodies ◽  
Management Tool ◽  
Small Water ◽  
Small Water Bodies ◽  
Integrative Management

scholarly journals Estimation of Chlorophyll-a Concentrations in Small Water Bodies: Comparison of Fused Gaofen-6 and Sentinel-2 Sensors

2022 ◽  
Vol 14 (1) ◽  
pp. 229
Author(s):  
Jiarui Shi ◽  
Qian Shen ◽  
Yue Yao ◽  
Junsheng Li ◽  
Fu Chen ◽  
...  
Keyword(s):  
Machine Learning ◽  
Chlorophyll A ◽  
Water Bodies ◽  
Gradient Boosting ◽  
Learning Models ◽  
Small Water ◽  
Extreme Gradient Boosting ◽  
Machine Learning Models ◽  
Sentinel 2 ◽  
Small Water Bodies

Chlorophyll-a concentrations in water bodies are one of the most important environmental evaluation indicators in monitoring the water environment. Small water bodies include headwater streams, springs, ditches, flushes, small lakes, and ponds, which represent important freshwater resources. However, the relatively narrow and fragmented nature of small water bodies makes it difficult to monitor chlorophyll-a via medium-resolution remote sensing. In the present study, we first fused Gaofen-6 (a new Chinese satellite) images to obtain 2 m resolution images with 8 bands, which was approved as a good data source for Chlorophyll-a monitoring in small water bodies as Sentinel-2. Further, we compared five semi-empirical and four machine learning models to estimate chlorophyll-a concentrations via simulated reflectance using fused Gaofen-6 and Sentinel-2 spectral response function. The results showed that the extreme gradient boosting tree model (one of the machine learning models) is the most accurate. The mean relative error (MRE) was 9.03%, and the root-mean-square error (RMSE) was 4.5 mg/m3 for the Sentinel-2 sensor, while for the fused Gaofen-6 image, MRE was 6.73%, and RMSE was 3.26 mg/m3. Thus, both fused Gaofen-6 and Sentinel-2 could estimate the chlorophyll-a concentrations in small water bodies. Since the fused Gaofen-6 exhibited a higher spatial resolution and Sentinel-2 exhibited a higher temporal resolution.

Suppression of Alga Blooming by Zooplankton Filter Feeders in Small Water Bodies

2018 ◽  
Vol 45 (2) ◽  
pp. 199-204 ◽  
Author(s):  
T. N. Gerasimova ◽  
P. I. Pogozhev ◽  
A. P. Sadchikov
Keyword(s):  
Water Bodies ◽  
Small Water ◽  
Filter Feeders ◽  
Small Water Bodies

Remote Sensing of Surface Water Dynamics Between 2015 and 2020 in the Prairie Pothole Region 

2021 ◽  
Author(s):  
Stefan Schlaffer ◽  
Marco Chini ◽  
Wouter Dorigo
Keyword(s):  
Surface Water ◽  
Prairie Pothole Region ◽  
Water Area ◽  
Water Bodies ◽  
Water Dynamics ◽  
Drought Indices ◽  
Prairie Pothole ◽  
Small Water ◽  
Wide Range ◽  
Small Water Bodies

<p>The North American Prairie Pothole Region (PPR) consists of millions of wetlands and holds great importance for biodiversity, water storage and flood management. The wetlands cover a wide range of sizes from a few square metres to several square kilometres. Prairie hydrology is greatly influenced by the threshold behaviour of potholes leading to spilling as well as merging of adjacent wetlands. The knowledge of seasonal and inter-annual surface water dynamics in the PPR is critical for understanding this behaviour of connected and isolated wetlands. Synthetic aperture radar (SAR) sensors, e.g. used by the Copernicus Sentinel-1 mission, have great potential to provide high-accuracy wetland extent maps even when cloud cover is present. We derived water extent during the ice-free months May to October from 2015 to 2020 by fusing dual-polarised Sentinel-1 backscatter data with topographical information. The approach was applied to a prairie catchment in North Dakota. Total water area, number of water bodies and median area per water body were computed from the time series of water extent maps. Surface water dynamics showed strong seasonal dynamics especially in the case of small water bodies (< 1 ha) with a decrease in water area and number of small water bodies from spring throughout summer when evaporation rates in the PPR are typically high. Larger water bodies showed a more stable behaviour during most years. Inter-annual dynamics were strongly related to drought indices based on climate data, such as the Palmer Drought Severity Index. During the extremely wet period of late 2019 to 2020, the dynamics of both small and large water bodies changed markedly. While a larger number of small water bodies was encountered, which remained stable throughout the wet period, also the area of larger water bodies increased, partly due to merging of smaller adjacent water bodies. The results demonstrate the potential of Sentinel-1 data for long-term monitoring of prairie wetlands while limitations exist due to the rather low temporal resolution of 12 days over the PPR.</p>

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