Handbook of Inland Aquatic Ecosystem Management (Applied Ecology and Environmental Management)

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Influence of intraannual dynamics of biogenic elements inflow upon functioning of an abstract flowing water reservoir ecosystem.

Ecosystem management at national and international level

Meteorologicheskiy Vestnik, Vol. Tretyakov, M. Simulation of flowing water reservoir eutrophication. Tretyakov, E. Simulation of toxic pollution impact upon functioning of an abstract flowing water reservoir ecosystem, Meteorologicheskiy Vestnik, Vol. Joint effect of eutrophication and toxic contamination of aquatic ecosystems.

Tretyakov, O. Simulation of toxicant dynamics in biocenosis of an abstract flowing water reservoir ecosystem, Meteorologicheskiy Vestnik, Vol. N2 - We consider some experience of computer simulation of within-year cycles of aquatic ecosystems, which has group of lecturers and scientists of St. Petersburg State University. The experience includes designing point, reservoir and spatially non-homogeneous simulation models of aquatic ecosystems functioning, and carrying out numerical experiments with the models. The models are applied forinvestigations in the sphere of ecology, nature protection and nature management.

Main attention in the report is devoted up-to-date state of the simulation. AB - We consider some experience of computer simulation of within-year cycles of aquatic ecosystems, which has group of lecturers and scientists of St. Abstract We consider some experience of computer simulation of within-year cycles of aquatic ecosystems, which has group of lecturers and scientists of St.

The models are applied for investigations in the sphere of ecology, nature protection and nature management. Dmitriev and Yu. Sergeev and V.

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1st Edition

This free service is available to anyone who has published and whose publication is in Scopus. Researcher Academy Author Services Try out personalized alert features. Water scarcity compromises the implementation of water policies and impairs the capacity of taking sound management decisions Poesen and Hooke, ; Baron et al.

Furthermore, current management practices and policies often neglect the influence of multiple stressors on ecosystem services, and fail to appreciate the importance of future water scarcity. The limited information on the biophysical and economic values of ecosystems and the alterations they undergo as a consequence of global change limits the capacity of decision-makers to improve current policies.

Human economy and social equilibrium also depend on the wise management of declining availability of fresh water resources. Therefore, it is urgent to gain scientific information on the potential effects of water scarcity on river ecosystems under multiple stressors, to understand how these will in turn affect ecosystem services, and to transfer all this knowledge into sound policies that can minimise the impacts of ongoing global change. The objectives of this paper are to present an overall picture of the GLOBAQUA project, its structure, and to present an overview of the six river basins studied.

It is active since February and will continue until January It assembles a multidisciplinary team of hydrologists, chemists, biologists, geomorphologists, economists and sociologists, including experts in modelling, in socio-economics and governance science, and in knowledge brokerage and policy advocacy. The team involves researchers, but also practitioners and end-users such as policy-makers and river basin managers.

The main aim of GLOBAQUA is to study the effects of water scarcity in a multiple stressor framework to achieve a better understanding of how current management practices and policies could be improved by identifying their main drawbacks and alternatives Fig. More specifically, the project goals are:. GLOBAQUA assesses the effects of water scarcity on aquatic ecosystems and their services by focusing on six contrasting river basins, and by following a cross-scale approach.

The basic research element is the kilometre-scale river reach, including the river channel, the alluvial plain and the associated groundwater. Two basins from the Mediterranean European region Ebro — Spain and Evrotas — Greece , as well as one north African basin Souss Massa — Morocco , where water scarcity is the main current problem, have been selected to obtain a Mediterranean perspective.

In order to achieve a wider European dimension, one continental Sava, transboundary — Slovenia, Croatia, Bosnia and Herzegovina and Serbia , one Alpine Adige — Italy and one UK river basin Anglian River basin district , where scarcity is a growing issue because of multiple uses and unequal yearly distribution of precipitation, have been included among the case studies. The selected basins encompass a rich set of socio-ecological conditions forested mountainous areas, highly populated regions relying on water transfers, agricultural areas and industrial clusters , and a wide geographic coverage Fig.

Each basin focuses on a specific set of stressors to illustrate different management scenarios. In four of them Adige, Sava, Ebro and Evrotas extensive field work will be done, while in two of them Anglian River basin district and Souss Massa the existing data will be used to evaluate different management scenarios.

Hydrology is markedly seasonal, with high flow peaks and long periods of low flow, and is severely affected by water scarcity. Abstraction of ground and surface water, together with agricultural and industrial activities, and the impact of waste-water treatment plants WWTPs , has deteriorated soil and water quality of some areas.


The abundant information gathered by the river basin authorities makes it an excellent basin for controlled experiments. Although the river is not within a dry region, it is periodically affected by water scarcity. Climate is characterized by dry winters, snowmelt in the spring and humid summers and falls. The main stressors in the basin are glacier melting, hydropower and pollution, especially associated to touristic activities.

Earlier snow melting, due to climate change, is already reducing water resources during the irrigation period June—August , while increased temperatures in summer months are expected to cause an increase in water demand and to accelerate glacier melting Huss et al. Diffuse pollution by agriculture in the central and lower course of the Adige River represents a relevant environmental pressure factor.

Furthermore, hydropeaking can have severe consequences on the transport of contaminant loads. Additional potential stressors may include the release of pollutants accumulated in the glaciers, and the release of emerging pollutants from WWTPs. It is a transboundary river, and its management is therefore collaborative between the countries in the basin Slovenia, Croatia, Bosnia and Herzegovina and Serbia. Although the pressures are similar to the Ebro, the hydrology is less variable. The population in the basin is about 8. The upper reaches of the Sava basin are affected by hydromorphological pressures, the middle reaches by agricultural activities and eutrophication, and the lower reaches by industrial and urban pollution.

The data available on the environmental status of the Sava River is currently limited to certain river sections or to particular variables Torsten et al. Although not regulated, it is affected by overexploitation of water resources for irrigation, agro-industrial wastes mainly oil mills , agrochemical pollution and geomorphological modifications.

Overexploitation of groundwater aquifers and abstraction from surface waters result in the artificial desiccation of parts of the main stream and a number of tributaries Skoulikidis et al. The time of desiccation and the hydroperiod of the remaining pools are critical for management and conservation purposes.

Only one WWTP exists in the basin city of Sparta , while villages are served by traditional permeable and impermeable cesspools. The amount of data available in the basin is very small. The quality of water resources is affected by pollution from different sources domestic, industrial, agricultural , thus resulting in a severe scarcity of water resources.

This results in over one fifth of the basin being susceptible to coastal and surface flooding. The area has intense horticulture and pig and poultry farming. Building is the largest economic sector in the basin, followed by manufacturing. The negative effects of water abstraction are exacerbated by a rapidly growing population.

There is considerable background knowledge of this basin Environment Agency, ; Collins et al. The case-study work within GLOBAQUA starts with the collection of existing data, so that the relation between stressors and ecological status can be assessed. The most suitable river reaches are being identified based on the information available on water scarcity, main stressors and specific ecosystem services.

Three different strategies are combined within GLOBAQUA: descriptive field campaigns, controlled field experiments, and manipulative experiments in the laboratory and in artificial streams. General information from the case-study basins will be gathered by means of simultaneous field sampling on pollutants, biodiversity and ecosystem functioning.

In a subsequent step, field experiments will be performed on selected river segments to test the effect of combined stressors e. They will be complemented with manipulative laboratory experiments, which will also address specific questions such as the interaction between water temperature and concentration of pharmaceutical concentrations. Combining field and lab experiments will allow understanding of the mechanisms behind the interactions between stressors as well as their effects on the different receptors. Validated methods for chemical analysis of a broad spectrum of metals, priority and emerging pollutants in water, sediment and biota algae, mussels, small aquatic organisms and fish are already available.

In addition, immunoassays and non-target screening will be used for the rapid characterization of contaminants. Quantitative sampling will be carried out on algae, macrophytes, invertebrates and fish, paying special attention to invasive species, and the weight of the different stressors on the community structure will be assessed by multivariate statistical tools. Ecosystem functioning will be evaluated by means of integrative processes such as retention of nutrients, removal of pollutants, whole-ecosystem metabolism, and decomposition of organic matter, which differ in the temporal and spatial scales at which they respond Aristi et al.

Special effort will be made to combine the different models, climatic, hydrologic, hydromorphologic and so on, crossing the barriers among disciplines. An integrated methodology for identifying the environmentally and socioeconomically sustainable management of water resource ecosystem services will be performed in each case study. All WPs will be implemented in all six case-study river basins, although fieldwork will not be performed in all of them to the same extent.

WP1-DATA manages data either internally generated by the project or acquired from external sources, and conveys them to a Hub platform to share the data among project members, and eventually among potential users, either scientists or managers. Comparisons will focus on the time horizon — versus the reference climatology — The climate model data will further be bias-corrected to sufficiently reproduce the reference climatology.

WP3-HYDROL uses existing modelling approaches to link surface and subsurface hydrological fluxes and the impact of water scarcity on the ecological status of streams, including hyporheic, riparian and floodplain zones.

Handbook of Inland Aquatic Ecosystem Management: 1st Edition (Hardback) - Routledge

Flow and transport processes are upscaled from point to basin and regional scales, accounting for the sources of uncertainty of the model outputs. Historical data series are analysed to disentangle the effect of multiple human impacts on water resources along time and across space. WP4-GEOMORPH analyses the effects of changing hydrology, land use, and climate on sediment transport, channel morphology, physical habitat, and pollutant fluxes in rivers. It analyses the occurrence, fate and behaviour of priority and emerging pollutants in rivers heavy metals, halogenated and organophosphate compounds, pharmaceuticals and hormones, personal care products, pesticides, perfluorinated compounds and nanomaterials , and identifies the effects of water scarcity across study basins.

This WP combines general sampling surveys, field and laboratory experiments to test the effects of multiple pressures on the fate and behaviour of microcontaminants. It pays special attention to the impairment of key habitats as it can reduce species resistance capacity and promote the spreading of invasive species Rahel, On-site analyses are combined with field and mesocosm experiments, studying the changes induced by pathogens, micropollutants and invasive species on biodiversity in each study basin.

Additionally, whole-river metabolism is reconstructed from historical data on oxygen concentration to determine the effects of climatic variation and new human stressors of known occurrence on river ecosystem functioning. The historical perspective of human occupancy and land use change is assessed through analyses of historic adjustment of river channels. Thus, it provides objective tools for decision systems to evaluate the effects of planned management interventions and to help planners manage the river basin as a whole, taking decisions to counteract the effects of multiple stressors on ecosystem attributes such as ecological or chemical status.

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This WP analyses how biophysical changes in ecosystems are affecting human well-being, taking into account the users' perspective and valuation of ecosystem services. Therefore, it integrates across disciplines, from biophysical to the socio-economic fields, addressing the complex of abiotic and biotic interacting as ecosystem functions, and across scales, from river reach to basin and regional scale, towards a pan-European view. WPPOLICY connects the impact of scarcity with water policy, following a systems approach that acknowledges the critical role of socio-economic policy instruments and investment for WFD implementation, and building on the findings of all WPs.

Therefore, this WP defines the current EU context, identifies opportunities to assist policy making, and will produce recommendations for improvement. For this, a special External Advisory Board is established, which will peer review the results, control the quality of deliverables, and suggest how to improve the outputs of the project to the needs of stakeholders. Water scarcity already exerts strong environmental pressures in many European regions, and is a serious cause of concern in many more, according to scenarios of future environmental change. Therefore, it is crucial to gain sound scientific information on the ways water scarcity interacts with other stressors in freshwater ecosystems, in order to understand its environmental and socio-economical consequences, and to convey this information to managers, stakeholders and policymakers in order to minimise impacts, to adapt to oncoming changes, and to improve our management and policies.

These are the main tasks of GLOBAQUA, a project that brings together a large group of researchers, stakeholders, and policy makers across a wide range of disciplines. The added value of this collaboration lies in the possibility of addressing the problems arising from the scarcity and multiple stressors, as well as their effects on the ecosystem services and the overall effects of global changes. Hopefully, the close collaboration between scientist and stakeholders in GLOBAQUA, will allow implementing the approaches proposed in pilot sub-basins within the study areas, and to better fulfil water needs of both human and nature.