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All the suspended material in water, organic matter or nutrients, such as nitrogen or phosphate. They may occur naturally in water but their concentration increases with human activities (wastewater discharge, agriculture...). In contrast to micropollutants, which are toxic even at low concentration, macropolluants requires higher content to cause bad effects.
Physical and chemical characteristics of water. Inside a water analysis, the observed parameters are quite numerous, and all of these allow to determine the physical-chemical water quality, which determines the maintenance of river biodiversity. These parameters could be for example, temperature, turbidity, concentration of organic matter, mineral, nitrogen, etc.
Articulated invertebrate animal which have the characteristic of breathing through trachea. Some insects have become aquatic (representing 3% of insects) but have retained this aerial breathing.
Animal visible to the naked eye (ie larger than 0.5 mm) that does not have a skeleton, bone or cartilage.
Bon fonctionnement des écosystèmes (au niveau biologique, physique, chimique et sanitaire) permettant un usage durable du milieu marin. Onze descripteurs qualitatifs (annexe 1 de la DCSMM), communs à tous les États membres de l'Union européenne, servent à définir le bon état écologique : Biodiversité ; Espèces non indigènes ; Espèces commerciales ; Réseaux trophiques ; Eutrophisation ; Intégrité des fonds marins ; changements hydrographiques ; Contaminants ; Questions sanitaires ; Déchets marins ; Bruit sous-marin.
Organization in charge of carrying out analyses or coordinating analyses made by subcontractors. The laboratories are stakeholders which generally act as providers under contracts (procurement). They produce data according to the specifications attached to the order.
In the strict sense, it is taking a sample (sampling) for analysis or testing. More generally, water withdrawals include all abstractions related to activities generated by agriculture, industry (including energy), drinking water supply, or others (authorized spring of mineral water, production of artificial snow). In this case, the withdrawals are grouped into 3 subtypes corresponding to the affected environment: surface water withdrawals, groundwater abstractions, seawater withdrawals.
Index for assessing the biological quality of the water of a river through an analysis of macro invertebrates. The value of this index depends on both the quality of the physical environment (bottom structure, habitat diversity, river bank status, etc) and water quality.
A living species which, by its presence or absence, abundance or scarcity, allow to assess the degree of pollution of water or air. (e.g : lichens for the atmosphere, salmonids for rivers, etc.)
Specie or group of species whose observed characteristics (occurrence, abundance, biomass, biological traits, etc.) provide an indication of the level of environmental degradation. A bioindicator is therefore subject to measures to indicate the presence or effects of pollutants and thus allows the quality of the environment in which it is collected to be assessed. It can be considered complementary (especially for the spatial distribution of pollution, the characterization of synergies, the gradual pollution, etc.) of networks of physicochemical measurements.