Establishing the relationship between benthic macroinvertebrates and water level fluctuation in subtropical shallow wetlands

2021 ◽  
Vol 193 (8) ◽  
Author(s):  
Sunita Shrestha ◽  
Ram Devi Tachamo-Shah ◽  
Tanya Doody ◽  
Susan Cuddy ◽  
Deep Narayan Shah
Keyword(s):  
Water Level ◽  
Benthic Macroinvertebrates ◽  
Water Level Fluctuation ◽  
Level Fluctuation ◽  
The Relationship

The relationship between water level fluctuation and distribution of emergent aquatic macrophytes in large, mildly regulated lakes in the Finnish Lake District

2006 ◽  
Vol 29 (3) ◽  
pp. 1160-1166 ◽  
Author(s):  
Sari Partanen ◽  
Antton Keto ◽  
Mika Visuri ◽  
Anne Tarvainen ◽  
Juha Riihimäki ◽  
...  
Keyword(s):  
Water Level ◽  
Aquatic Macrophytes ◽  
Water Level Fluctuation ◽  
Level Fluctuation ◽  
Lake District ◽  
Regulated Lakes ◽  
The Relationship

scholarly journals Analysis of the relationship between water level fluctuation and seismicity in the Three Gorges Reservoir (China)

2017 ◽  
Vol 8 (2) ◽  
pp. 96-102 ◽  
Author(s):  
Lifen Zhang ◽  
Jinggang Li ◽  
Guichun Wei ◽  
Wulin Liao ◽  
Qiuliang Wang ◽  
...  
Keyword(s):  
Water Level ◽  
Three Gorges Reservoir ◽  
Water Level Fluctuation ◽  
Level Fluctuation ◽  
Three Gorges ◽  
The Three Gorges Reservoir ◽  
The Three Gorges ◽  
The Relationship

Study on the Relationship between Factor of Safety and Angle of Dip of Bedding Rock Slope when Exposed to Reservoir Water Level Fluctuation

2012 ◽  
Vol 446-449 ◽  
pp. 3894-3899
Author(s):  
Yao Li ◽  
Shu Ping Wang ◽  
Zhen Hua Zhang ◽  
Shao Jun Li
Keyword(s):  
Water Level ◽  
Water Level Fluctuation ◽  
Field Variation ◽  
Level Fluctuation ◽  
Rock Slopes ◽  
Seepage Field ◽  
Reservoir Water ◽  
Reservoir Water Level ◽  
The Relationship ◽  
Reservoir Water Level Fluctuation

The impoundment and running of Three Gorges Reservoir makes the water level fluctuate between 175m and 145m, and the water level fluctuation has been leading to the seepage field variation of bank slopes, which will bring out the stability change of bank slopes. In order to obtain the relationship between the angles of dip and factors of safety of bedding rock slopes which are generalized slope models from some bedding rock slopes failure in some reservoirs, the finite element method based on Darcy seepage theory was taken to simulate the seepage field variation of this type of bedding rock slopes when exposed to water level fluctuation, then the underground water tables of the bedding rock slopes with different angles of dip were obtained, finally the factors of safety of bedding rock slopes when water level rose and fell at speed of 0.2m/d were calculated by limit equilibrium method. Through the regulation analysis of factors of safety with the increase of angles of dip of bedding rock slopes when exposed to reservoir water level fluctuation, the relationship between factors of safety and angles of dip of bedding rock slopes was obtained.

The importance of water-level fluctuation for the conservation of shallow water benthic macroinvertebrates: an example in the Andean zone of Chile

2007 ◽  
Vol 16 (11) ◽  
pp. 3095-3109 ◽  
Author(s):  
Claudio Valdovinos ◽  
Carolina Moya ◽  
Viviana Olmos ◽  
Oscar Parra ◽  
Bernhard Karrasch ◽  
...  
Keyword(s):  
Shallow Water ◽  
Water Level ◽  
Benthic Macroinvertebrates ◽  
Water Level Fluctuation ◽  
Level Fluctuation

scholarly journals Response of aquatic macrophyte biomass to limnological changes under water level fluctuation in tropical reservoirs

2019 ◽  
Vol 79 (1) ◽  
pp. 120-126 ◽  
Author(s):  
E. G. Moura Júnior ◽  
A. Pott ◽  
W. Severi ◽  
C. S. Zickel
Keyword(s):  
Water Level ◽  
Eichhornia Crassipes ◽  
Aquatic Macrophyte ◽  
Interspecific Interaction ◽  
Water Level Fluctuation ◽  
Northeastern Brazil ◽  
Pistia Stratiotes ◽  
Level Fluctuation ◽  
Tropical Reservoirs ◽  
The Relationship

Abstract We evaluated the response of the biomass of aquatic macrophytes under limnological changes after water level fluctuation (WLF) of two tropical reservoirs (R1 and R2), located in northeastern Brazil. Initially we tested the hypothesis that post-WLF limnological conditions and biomass of macrophytes increase or decrease, depending on the variable or species. We monitored a 4 × 50 m permanent plot, in four expeditions per period (pre- or post-WLF), assessing species biomass and 10 limnological variables. We utilized 0.25 × 0.25 m quadrats for biomass. Once the effect of WLF in limnological variables and species biomass was confirmed, we utilized Canonical Correspondence Analysis to understand the relationship between limnological variables and species biomass. The abundant and/or dominant species in pre-WLF of R1 ( Pistia stratiotes, Eichhornia crassipes and Salvinia auriculata) and R2 (Paspalidium geminatum and S. auriculata) reduced their biomass post-WLF and were correlated with temperature, total phosphorous and nitrate. The reduced biomass of P. stratiotes, E. crassipes and S. auriculata in post-WLF widened resource availability, allowing coexistence of species. Therefore, we suggest that the change of limnological conditions in post-WLF in artificial lakes acts only as a moderator factor of the interspecific interaction (especially coexistence), without direct relation between these conditions and species biomass.

scholarly journals The relationship between water-level fluctuation factors and the distribution of Carex in floodplain grassland around Poyang Lake

2018 ◽  
Vol 30 (6) ◽  
pp. 1672-1680
Author(s):  
YU Wenqi ◽  
◽  
DAI Xue ◽  
YANG Ying ◽  
WAN Rongrong ◽  
...  
Keyword(s):  
Water Level ◽  
Poyang Lake ◽  
Water Level Fluctuation ◽  
Level Fluctuation ◽  
The Relationship

The relationship between seasonal water level fluctuation and habitat availability for wintering waterbirds at Shengjin Lake, China

2018 ◽  
Vol 29 (1) ◽  
pp. 100-114 ◽  
Author(s):  
CHUNLIN LI ◽  
YANG YANG ◽  
ZHEN WANG ◽  
LING YANG ◽  
DONGMEI ZHANG ◽  
...  
Keyword(s):  
Water Level ◽  
Deep Water ◽  
Yangtze River ◽  
Water Level Fluctuation ◽  
Habitat Availability ◽  
Level Fluctuation ◽  
River Floodplain ◽  
Waterbird Species ◽  
Suitable Habitats ◽  
The Relationship

SummaryConservation plans for waterbirds in periodically flooded wetlands should be based on a deep understanding of the relationship between habitat availability and the hydrological regime. Using waterbird surveys and remotely sensed images, we investigated how habitat availability for wintering waterbirds was regulated by seasonal water level fluctuation at Shengjin Lake in the lower Yangtze River floodplain, which is an important wintering area along the East Asian-Australasian Flyway. We recorded 52 waterbird species during three field surveys, and categorised them into four groups based on their foraging preferences: grassland, mudflats, shallow water, or deep water. Habitat availability for the four groups was significantly influenced by fluctuations in water level. Habitat for deep-water feeders dominated the lake throughout the year, despite contracting during the wintering season. Water recession during winter exposed more diverse riparian habitats that showed high spatial heterogeneity at the landscape level, with the Upper Lake providing the most suitable habitats for the most diverse and abundant waterbirds. It is worth noting that the water level was regulated highly for aquaculture during the early wintering period, impeding access to suitable habitats for the early-arriving waterbirds that foraged in the riparian mudflats and grassland. Furthermore, rapid water recession from the opening of a sluice gate allowed the exposed moist mudflats to dry up quickly, reducing its suitability for shorebirds and cranes. For effective wintering waterbird conservation in the ephemeral lacustrine wetlands in the Yangtze River floodplain, we suggest stepwise water recession plans, together with the recovery of the aquatic vegetation community and reduction in high-density aquaculture, to synchronise the exposure of foraging habitats with the migration phenology of different waterbird species.

EFFECTS OF WATER LEVEL FLUCTUATION ON REPRODUCTION AND SPAWNING HABITS OF FISH SPECIES IN LAKE BALATON

2007 ◽  
Vol 6 (5) ◽  
pp. 467-471 ◽  
Author(s):  
Gabor Paulovits ◽  
Gabor Borbely ◽  
Laszlo G. Toth ◽  
Nora Kovats
Keyword(s):  
Water Level ◽  
Fish Species ◽  
Water Level Fluctuation ◽  
Lake Balaton ◽  
Level Fluctuation
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