Colonization and succession of submerged macrophytes in shallow Lake Væng during the first five years following fish manipulation

1994 ◽  
pp. 233-242 ◽  
Author(s):  
Torben L. Lauridsen ◽  
Erik Jeppesen ◽  
Martin Søndergaard
Keyword(s):  
Shallow Lake ◽  
Submerged Macrophytes ◽  
Fish Manipulation

Colonization and succession of submerged macrophytes in shallow Lake Væng during the first five years following fish manipulation

Hydrobiologia ◽  
1994 ◽  
Vol 275-276 (1) ◽  
pp. 233-242 ◽  
Author(s):  
Torben L. Lauridsen ◽  
Erik Jeppesen ◽  
Martin Søndergaard
Keyword(s):  
Shallow Lake ◽  
Submerged Macrophytes ◽  
Fish Manipulation

Application of the CNOP Method in the Shallow Lake Ecosystem

2014 ◽  
Vol 1010-1012 ◽  
pp. 658-661 ◽  
Author(s):  
Qian Qian Qi ◽  
Bo Wang
Keyword(s):  
Ecological Restoration ◽  
Shallow Lake ◽  
Submerged Macrophytes ◽  
Finite Amplitude ◽  
Water Transparency ◽  
Lake Ecosystem ◽  
Initial Condition ◽  
Turbid Water ◽  
Variable Model

It is serious on the degradation of the shallow lake ecosystem at present, while the recovery of the macrophytes vegetations and the increase in water transparency have been the main contents of the ecological restoration. Using a two-variable model, we discuss the instability and sensitivity of the ecosystem to the finite-amplitude perturbations related to the initial condition with CNOP-I method. Results show that the linearly stable clear (turbid) water states can be nonlinearly unstable with the finite-amplitude perturbations. The results also demonstrate that the facilitation interactions between the submerged macrophytes and the water transparency are the main trigger for a shift from the turbid to the clear state.

Submerged macrophytes facilitate dominance of omnivorous fish in a subtropical shallow lake: implications for lake restoration

Hydrobiologia ◽  
2016 ◽  
Vol 775 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Jinlei Yu ◽  
Zhengwen Liu ◽  
Hu He ◽  
Wei Zhen ◽  
Baohua Guan ◽  
...  
Keyword(s):  
Shallow Lake ◽  
Lake Restoration ◽  
Submerged Macrophytes ◽  
Omnivorous Fish

scholarly journals Temperature and Circulation Dynamics in a Small and Shallow Lake: Effects of Weak Stratification and Littoral Submerged Macrophytes

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 128 ◽  
Author(s):  
Péter Torma ◽  
Chin Wu
Keyword(s):  
Velocity Profile ◽  
Shallow Lake ◽  
Littoral Zone ◽  
Submerged Macrophytes ◽  
Layer Structure ◽  
Maximum Velocity ◽  
Mean Flow ◽  
Circulation Patterns ◽  
Weak Stratification ◽  
Circulation Dynamics

In this paper, the effects of littoral submerged macrophytes on weak stratification conditions in a small and shallow lake are investigated. Diverse submerged macrophytes occupying a large portion of the littoral zone act as resistance to water motions and affect lake hydrodynamics. Strong solar radiation and mild wind forcing typically occurring during the summer season result in weak stratification characterized by a diurnal cycle with a temperature differential of 1–3 °C. Temperature and circulation dynamics of a small and shallow lake are depicted by extensive field measurements and a three-dimensional non-hydrostatic model with a generic length scale (GLS) approach for the turbulence closure and drag forces induced by macrophytes. Results show that the effects of macrophytes on velocity profiles are apparent. In the pelagic area, the circulation patterns with and without macrophytes are similar. The velocity profile is generally characterized by a two-layer structure with the maximum velocity at both the water surface and the mid-depth. In contrast, inside the littoral zone, the mean flow is retarded by macrophytes and the velocity profile is changed to only one maximum velocity at the surface with a steeper decrease until 2.0 m depth and another slight decrease to the lake bottom. From the whole lake perspective, littoral macrophytes dampen the horizontal water temperature difference between the upwind side and download side of the lake. Macrophytes promote a stronger temperature stratification by retarding mean flows and reducing vertical mixing. Overall, this study shows that the temperature structures and circulation patterns under weak stratification conditions in a small and shallow lake are strongly affected by littoral vegetation.

Phycological investigations of pelagic vs. littoral zones of shallow lake ecosystems

Biologia ◽  
2010 ◽  
Vol 65 (3) ◽  
Author(s):  
Sofia Celewicz-Gołdyn ◽  
Małgorzata Klimko ◽  
Natalia Kuczyńska-Kippen
Keyword(s):  
Shallow Lake ◽  
Submerged Macrophytes ◽  
Diversity Indices ◽  
Typha Angustifolia ◽  
Eutrophic Lakes ◽  
Algal Communities ◽  
Lake Ecosystems ◽  
Phytoplankton Communities ◽  
Littoral Zones ◽  
Ecological Types

AbstractThe main goal of this study was to examine the influence of two aquatic plants representing various ecological types (Chara tomentosa and Typha angustifolia) and comparatively the pelagic zone, on the phytoplankton communities in three shallow and macrophyte-dominated lakes.The stand dominated by Chara tomentosa was characterised by the richest taxonomical structure, the highest biomass of algae (phytoplankton sensu lato), as well as by the highest values biodiversity indices out of all the examined stations. Bacillariophyceae and Chlorophyta dominated in the biomass. There was a numerous group of species that selectively chose the Chara bed among the two groups of phytoplankton, e.g. Cymbella lanceolata (Ehr.) Kirchner, Rhopalodia gibba (Ehr.) O.Müll and Spirogyra sp.It was found that the stand of submerged macrophytes, represented by Chara tomentosa, significantly and specifically influenced the differentiation of the structure of the algal communities of shallow and eutrophic lakes.The aim of the study was to determine differences in algal communities, relating to biomass and diversity indices, between lake zones — eulittoral (with Typha), infralittoral (with Chara meadows) and pelagial.

Distribution of submerged macrophytes along environmental gradients in large, shallow Lake Balaton (Hungary)

2008 ◽  
Vol 88 (4) ◽  
pp. 317-330 ◽  
Author(s):  
Vera Istvánovics ◽  
Márk Honti ◽  
Ádám Kovács ◽  
András Osztoics
Keyword(s):  
Shallow Lake ◽  
Submerged Macrophytes ◽  
Environmental Gradients ◽  
Lake Balaton ◽  
Large Shallow Lake
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