Development of tools for ecological quality assessment in Polish marine areas according to the Water Framework Directive. Part I - Nutrients

Author(s):  
Elżbieta Łysiak-Pastuszak ◽  
Włodzimierz Krzymiński ◽  
Łukasz Lewandowski

Development of tools for ecological quality assessment in Polish marine areas according to the Water Framework Directive. Part I - NutrientsAssessment of the ecological status of an aquatic environment according to the European Union Water Framework Directive (WFD) requires the determination of a link between the observed status of the marine ecosystem and catchment loading as well as the establishment of criteria for ecological status definitions. This article presents the results of a study identifying links between environmental pressures in the Polish sector of the Baltic Sea and state parameters applied in the assessment of eutrophication. Strong, statistically significant correlations were found between riverine loads of nutrients and their marine concentrations even in relatively short time data series.

Author(s):  
Elżbieta Łysiak-Pastuszak ◽  
Włodzimierz Krzymiński ◽  
Łukasz Lewandowski

Development of tools for ecological quality assessment in polish marine areas according to the Water Framework Directive. Part II — Chlorophyll-To implement the EU Water Framework Directive (WFD) it is necessary to establish tools enabling ecological status quantification on the basis of biological indicators, and to assess reference conditions and relevant environmental pressures for the construction of response curves. This study focuses on the Polish sector of the Baltic Sea. A number of statistically significant linear correlations, linking chlorophyll-


Author(s):  
Elżbieta Łysiak-Pastuszak ◽  
Włodzimierz Krzymiński ◽  
Łukasz Lewandowski

Development of tools for ecological quality assessment in polish marine areas according to the Water Framework Directive. Part III — Secchi depthThe implementation of the EU Water Framework Directive (WFD) requires ecological status quantification on the basis of biological and physico-chemical parameters, and an assessment of reference conditions and relevant environmental pressures for the construction of response curves. In this study the linking of water transparency, a proposed eutrophication indicator, to environmental pressure parameters was examined in the Polish sector of the Baltic Sea. Statistically significant linear correlations were detected between nutrient concentrations in sea water and Secchi depth, and between nutrient riverine loads and Secchi depth. The magnitude of acceptable deviation from reference conditions is also discussed.


2012 ◽  
Vol 41 (3) ◽  
pp. 1-10 ◽  
Author(s):  
Andrzej Osowiecki ◽  
Elżbieta Łysiak-Pastuszak ◽  
Lidia Kruk-Dowgiałło ◽  
Magdalena Błeńska ◽  
Paulina Brzeska ◽  
...  

AbstractA set of classification methods was developed for the Polish coastal and transitional waters regarding the biological quality elements — phytoplankton, macrophytes and macroinvertebrates as required by the EU Water Framework Directive. Mean summer chlorophyll-a and total summer biomass of phytoplankton were proposed as indicators in the phytoplankton assessment. Macrophytes were assessed by the Macrophyte Quality Assessment Index, including biomass and percent bottom coverage of the selected taxa. Macroinvertebrate assessment was based on a biotic index comprising abundance, dominance structure, taxonomical richness and species sensitivity/tolerance to eutrophication. A preliminary assessment of the ecological status revealed that the coastal and transitional waters failed to reach a ‘good’ ecological status.


2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Aldo Marchetto ◽  
Tommaso Sforzi

The Water Framework Directive asks to all Member States of the European Union to classify the ecological quality of significant waterbodies on the basis of the biological communities they host. One of the biological communities that must be used for the ecological quality assessment is the periphytic community, mainly composed by diatoms. In Italy, diatom-based lake quality assessment is performed using a specific index, named EPI-L, based on the method of weighted averages. For each species, a trophic score and an indicator weight were calculated.  In order to reduce the complexity of the lake quality assessment, we calibrated a variant of EPI-L, using diatoms genera instead of species, and we compared the performance of these two variants in terms of correlation with the nutrient level and of different classification of each lake.


Author(s):  
Rossano Bolpagni ◽  
Mattia M. Azzella ◽  
Chiara Agostinelli ◽  
Andrea Beghi ◽  
Eugenia Bettoni ◽  
...  

<p>The existence of strong potential synergies between the Water Framework Directive (WFD) and the Habitats Directive (HD) is widely acknowledged. Indeed, ensuring favourable conservation conditions for aquatic habitats and species of conservation concern is closely related to the achievement of a good ecological status in water bodies. However, since these two sets of European laws are generally applied without any coordination, an inefficient use of resources may adversely affect their goals. The main negative outcome is an increase in the cost of monitoring programs for collecting data in nature (<em>i.e.</em>, physical and chemical parameters, species and habitats, plant communities). The use of macrophytes as a bioindicator, as imposed by the WFD, may instead help to integrate data on aquatic EU habitats and enhance knowledge of such habitats outside the Natura 2000 network. The aim of present study was to evaluate the usefulness of data collected in WFD monitoring surveys as a means of inferring the occurrence and the distribution of lacustrine aquatic habitats in countries belonging to the European Union (EU). The main aim of the analysis was to identify the depth gradient distribution of diagnostic macrophyte <em>taxa</em> in two EU habitats (3140, <em>i.e.</em>, <em>Chara</em>-dominated benthic communities, and 3150, <em>i.e.</em>, natural eutrophic lakes) using data collected in lakes in Lombardy (northern Italy), some of which are included in the Natura 2000 network (10 out 16). While recognizing the limitations of the data collected within the two frameworks, the results confirmed the marked usefulness of WFD data as a means of enhancing the knowledge available on lacustrine aquatic habitats in the EU. WFD data can actively help to improve the basic information on aquatic habitats, thereby more effectively supporting regional strategies for biodiversity conservation as well as recovery programs.</p><p> </p>


Author(s):  
Giancarlo Bellissimo ◽  
Benedetto Sirchia ◽  
Vincenzo Ruvolo

In the frame of the European Water Framework Directive (WFD, 2000/60/EC), a macroalgae based index (CARLIT) was applied along the Sicilian coastal water bodies (WBs) in order to assess for the first time their ecological status and collect accurate information on the distribution and abundance of shallow-water communities, especially of those most sensitive. The ecological quality ratio values, sensu WFD, showed “high”/“good” levels in all WBs with lushy forests of Cystoseira amentacea except two with “moderate” level due to the presence of stress-tolerant species related to local factors.


Water Policy ◽  
2021 ◽  
Author(s):  
Duncan Liefferink ◽  
Morten Graversgaard ◽  
Helle Ørsted Nielsen ◽  
Daan Boezeman ◽  
Ann Crabbé ◽  
...  

Abstract Realising the goals of the European Union (EU) Water Framework Directive is difficult. The differentiation of water policies according to local conditions enjoys increasing attention and may be necessary to achieve good ecological status in all European waters. This paper seeks to explore to what extent and how local water quality determines the degree of coercion, i.e. the extent to which differentiated policies are voluntary or rather imposed upon policy addressees, of spatially differentiated water policies. It does so on the basis of seven cases in five EU Member States. For highly polluted waters, spatially differentiated policies tend either to make the use of authoritative policy instruments, i.e. coercion by way of formal regulation, or to rely on the threat to introduce such regulation. For preventing the deterioration of relatively ‘clean’ waters, voluntary instruments based on information and persuasion dominate, often supported by subsidies and/or the direct input of public resources. In relation to the spatial differentiation of water policies, issues of data demand, equality and legitimacy have to be taken into account.


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