Oscillation of a shallow lake ecosystem upon reduction in external phosphorus load

Rip, Winnie; Ouboter, Maarten; Nes, Egbert H. van; Beltman, B.

doi:10.1127/0003-9136/2005/0164-0387

Cited by 28 publications

(18 citation statements)

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“…The best documented examples that we are aware of are the English lake Alderfen Broad (Moss et al, 1990;Perrow et al, 1994) and the Dutch Lake Botshol (Simons et al, 1994;Rip et al, 2005). Both lakes cycle between the alternative states with a period of approximately 7 years.…”

Section: Cyclic Shifts Between Alternative Statesmentioning

confidence: 99%

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

2007

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Shallow lakes have become the archetypical example of ecosystems with alternative stable states. However, since the early conception of that theory, the image of ecosystem stability has been elaborated for shallow lakes far beyond the simple original model. After discussing how spatial heterogeneity and fluctuation of environmental conditions may affect the stability of lakes, we review work demonstrating that the critical nutrient level for lakes to become turbid is higher for smaller lakes, and seems likely to be affected by climatic change too. We then show how the image of just two contrasting states has been elaborated.

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Section: Cyclic Shifts Between Alternative Statesmentioning

confidence: 99%

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

2007

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“…It has been shown in several European lakes that the macrophyte-dominated state can cyclically shift into the phytoplankton-dominated state and back every several years with no evident external stimuli (Rip et al, 2005;Van Geest et al, 2005;Hargeby et al, 2007;van Nes et al, 2007). A similar phenomenon was observed in Boreal lakes of northern Canada (Bayley et al, 2007).…”

Section: Introductionmentioning

confidence: 51%

“…This might lead to lower resilience of the current clear-water state, and an increased probability of a shift to phytoplankton dominance and turbid water. This mechanism is suggested to be a trigger behind a repeated pattern of shifts between clear and turbid states (Rip et al, 2005;Hargeby et al, 2007;van Nes et al, 2007;RandsaluWendrup et al, 2014). In Lake Kleszczów, no such cyclic shifts were recorded despite a relatively wide range of TP concentrations (19-60 lg l -1 ) over more than 40 years (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Towards a more precisely defined macrophyte-dominated regime: the recent history of a shallow lake in Eastern Poland

et al. 2016

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Archived data and sedimentary macrofossil records of vegetation and invertebrates deposited in a 60-cm long sediment core were analysed to examine if macrophyte dominance was a permanent feature of the recent history of lowland Lake Kleszczów. For the last several centuries, the lake has not been dominated by phytoplankton but by floating-leaved vegetation at strongly reduced water level. Starting from the midnineteenth century, probably as a result of climate fluctuations, vegetation switched at first into submerged angiosperms, and then, in the second half of twentieth century, towards charophytes. Within charophytes there were switches between Chara globularis and C. vulgaris communities, depending on lake productivity or hydrological stress. No symptoms were detected of a switch to a turbid regime as a result of potential internal supply of phosphorus from sediments covered with a dense carpet of charophytes. Our study shows that within a longer period with clear water, the community of macro-vegetation can be highly dynamic. It can be represented by various types of vegetation as a response to different productivity levels and/or hydrological stress, largely determining the composition of other hydrobionts and course of various processes, and as a consequence, the functioning of the ecosystem and its resilience.

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“…In a Dutch shallow lake ecosystem [39], phosphorus concentrations fluctuated strongly relative to variations in the growth of aquatic plants despite the fact that external phosphorus loading was stable. Years with low Cov had higher P concentrations than years with high Cov, the patterns thus being identical with those recorded in Lake Vaeng.…”

Section: Discussionmentioning

confidence: 99%

Repeated Fish Removal to Restore Lakes: Case Study of Lake Væng, Denmark—Two Biomanipulations during 30 Years of Monitoring

Søndergaard

Lauridsen

Johansson

2017

Water

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Biomanipulation by fish removal has been used in many shallow lakes as a method to improve lake water quality. Here, we present and analyse 30 years of chemical and biological data from the shallow and 16 ha large Lake Vaeng, Denmark, which has been biomanipulated twice with a 20-year interval by removing roach (Rutilus rutilus) and bream (Abramis brama). After both biomanipulations, Lake Vaeng shifted from a turbid, phytoplankton-dominated state to a clear, water macrophyte-dominated state. Chlorophyll a was reduced from 60-80 µg·L −1 to 10-30 µg·L −1 and the coverage of submerged macrophytes, dominated by Elodea canadensis, increased from <0.1% to 70%-80%. Mean summer total phosphorus was reduced from about 0.12 to 0.07 mg·L −1 and total nitrogen decreased from 1.0 to 0.4 mg·L −1 . On a seasonal scale, phosphorus and chlorophyll concentrations changed from a summer maximum during turbid conditions to a winter maximum under clear conditions. The future of Lake Vaeng is uncertain and a relatively high phosphorus loading via the groundwater, and the accumulation of a mobile P pool in the sediment make it likely that the lake eventually will return to turbid conditions. Repeated fish removals might be a relevant management strategy to apply in shallow lakes with a relatively high external nutrient loading.

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Oscillation of a shallow lake ecosystem upon reduction in external phosphorus load

Cited by 28 publications

References 0 publications

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

Shallow lakes theory revisited: various alternative regimes driven by climate, nutrients, depth and lake size

Towards a more precisely defined macrophyte-dominated regime: the recent history of a shallow lake in Eastern Poland

Repeated Fish Removal to Restore Lakes: Case Study of Lake Væng, Denmark—Two Biomanipulations during 30 Years of Monitoring

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