Beyond the Plankton Ecology Group (PEG) Model: Mechanisms Driving Plankton Succession

Annual Review of Ecology Evolution and Systematics, Journal Year: 2012, Volume and Issue: 43(1), P. 429 - 448

Published: Sept. 14, 2012

The seasonal succession of plankton is an annually repeated process community assembly during which all major external factors and internal interactions shaping communities can be studied. A quarter a century ago, the state this understanding was described by verbal ecology group (PEG) model. It emphasized role physical factors, grazing nutrient limitation for phytoplankton, food fish predation zooplankton. Although originally targeted at lake ecosystems, it also adopted marine ecologists. Since then, suite ecological previously underestimated in importance have become research foci: overwintering key organisms, microbial web, parasitism, quality as limiting factor extended higher order predators. review impact these novel on reveals limited effects gross biomass patterns, but strong species replacements.

Language: Английский

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Climate change impacts on lakes: an integrated ecological perspective based on a multi-faceted approach, with special focus on shallow lakes

Journal of Limnology, Journal Year: 2014, Volume and Issue: 73(s1)

Published: April 8, 2014

Freshwater ecosystems and their biodiversity are presently seriously threatened by global development population growth, leading to increases in nutrient inputs intensification of eutrophication-induced problems receiving fresh waters, particularly lakes. Climate change constitutes another threat exacerbating the symptoms eutrophication species migration loss. Unequivocal evidence climate impacts is still highly fragmented despite intensive research, part due variety uncertainty models underlying emission scenarios but also different approaches applied study its effects. We first describe strengths weaknesses multi-faceted that available for elucidating effects lakes, including space-for-time substitution, time series, experiments, palaeoecology modelling. Reviewing combined results from studies based on various approaches, we likely changes biological communities, trophic dynamics ecological state further discuss potential mitigation adaptation measures counteract lakes and, finally, highlight some future challenges face improve our capacity successful prediction.

Language: Английский

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Persistent internal phosphorus loading during summer in shallow eutrophic lakes

Hydrobiologia, Journal Year: 2012, Volume and Issue: 710(1), P. 95 - 107

Published: April 4, 2012

Language: Английский

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A systematic literature review of forecasting and predictive models for cyanobacteria blooms in freshwater lakes

Water Research, Journal Year: 2020, Volume and Issue: 182, P. 115959 - 115959

Published: May 22, 2020

Language: Английский

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Modelling eutrophication in lake ecosystems: A review

The Science of The Total Environment, Journal Year: 2018, Volume and Issue: 651, P. 2985 - 3001

Published: Sept. 26, 2018

Language: Английский

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A General Lake Model (GLM 3.0) for linking with high-frequency sensor data from the Global Lake Ecological Observatory Network (GLEON)

Geoscientific model development, Journal Year: 2019, Volume and Issue: 12(1), P. 473 - 523

Published: Jan. 29, 2019

Abstract. The General Lake Model (GLM) is a one-dimensional open-source code designed to simulate the hydrodynamics of lakes, reservoirs, and wetlands. GLM was developed support science needs Global Ecological Observatory Network (GLEON), network researchers using sensors understand lake functioning address questions about how lakes around world respond climate land use change. scale diversity types, locations, sizes, expanding observational datasets created need for robust community model dynamics with sufficient flexibility accommodate range scientific management relevant GLEON community. This paper summarizes basis numerical implementation algorithms, including details sub-models that surface heat exchange ice cover dynamics, vertical mixing, inflow–outflow dynamics. We demonstrate suitability different types vary substantially in their morphology, hydrology, climatic conditions. supports dynamic coupling biogeochemical ecological modelling libraries integrated simulations water quality ecosystem health, options integration other environmental models are outlined. Finally, we discuss utilities analysis outputs uncertainty assessments, operation within distributed cloud-computing environment, as tool learning participants.

Language: Английский

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How to make ecological models useful for environmental management

Ecological Modelling, Journal Year: 2019, Volume and Issue: 411, P. 108784 - 108784

Published: Sept. 3, 2019

Understanding and predicting the ecological consequences of different management alternatives is becoming increasingly important to support environmental decisions. Ecological models could contribute such predictions, but in past this was often not case. are developed within research projects rarely used for practical applications. In synthesis paper, we discuss how strengthen role modeling supporting decisions with a focus on methodological aspects. We address mainly modellers also potential users results. Various approaches can be predict response ecosystems anthropogenic interventions, including mechanistic models, statistical machine learning approaches. Regardless chosen approach, outline better align decision making process, identify six requirements that believe increase usefulness support, especially if need justified public. These cover: (i) understanding regarding causality, (ii) alignment model input output decision, (iii) appropriate spatial temporal resolutions, (iv) uncertainty quantification, (v) sufficient predictive performance, (vi) transparent communication. challenges synthesize suggestions addressing these points.

Language: Английский

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A Dynamical Systems View of Psychiatric Disorders—Theory

JAMA Psychiatry, Journal Year: 2024, Volume and Issue: 81(6), P. 618 - 618

Published: April 3, 2024

Importance Psychiatric disorders may come and go with symptoms changing over a lifetime. This suggests the need for paradigm shift in diagnosis treatment. Here we present fresh look inspired by dynamical systems theory. theory is used widely to explain tipping points, cycles, chaos complex ranging from climate ecosystems. Observations In view, propose healthy state has basin of attraction representing its resilience, while are alternative attractors which system can become trapped. Rather than an immutable trait, resilience this approach property. Recent work demonstrated universality generic indicators that now employed globally monitor risks collapse systems, such as tropical rainforests elements system. Other tools ecology science infer causality time series. Moreover, experiences ecological restoration confirm theoretical prediction under some conditions, short interventions invoke long-term success when they flip into attraction. All implies practical applications psychiatry, discussed part 2 article. Conclusions Relevance Work field points novel ways inferring quantifying Those approaches have been tried tested range systems. The same help monitoring managing well psychiatric disorders.

Language: Английский

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Mechanistic theory and modelling of complex food‐web dynamics in Lake Constance

Ecology Letters, Journal Year: 2012, Volume and Issue: 15(6), P. 594 - 602

Published: April 18, 2012

Abstract Mechanistic understanding of consumer‐resource dynamics is critical to predicting the effects global change on ecosystem structure, function and services. Such severely limited by mechanistic models’ inability reproduce multiple populations interacting in field. We surpass this limitation here extending general network theory complex a specific comprised seasonal biomass production patterns pelagic food web large, well‐studied lake. parameterised our allometric trophic model 24 guilds 107 feeding relationships using lake’s initial spring biomasses body‐masses. Adding activity respiration, detrital loop, minimal abiotic forcing, prey resistance several empirically observed rates substantially increased model's fit size‐abundance distribution. This process illuminates promising approach towards improving food‐web dynamic models habitats.

Language: Английский

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A multi-lake comparative analysis of the General Lake Model (GLM): Stress-testing across a global observatory network

Environmental Modelling & Software, Journal Year: 2018, Volume and Issue: 102, P. 274 - 291

Published: Feb. 14, 2018

Language: Английский

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