It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

The available data does not include the total number of species of both groups in the diatom/dinoflagellate-ratio and therefore cannot be used for the assessment of GES. Species considered as dinoflagellates and diatoms are only species harmful to the environment and organisms directly or indirectly consuming these micro-algae, monitored regularly as part of the national control plan for bivalve molluscs for human consumption.

The frequency of harmful algal bloom events is presented only for characterisation purposes and as an indication of significant increases in abundance of some phytoplankton species. These extreme events reflect an ecosystem, natural or anthropogenic imbalance, which favours the rapid and dominant growth of some species. The series available are short, which makes it difficult to define the terms of reference for the classification of GES, particularly for these habitats, which are subject to natural and anthropogenic change whenever they are difficult to differentiate between them.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.

It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.

It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

The available data does not include the total number of species of both groups in the diatom/dinoflagellate-ratio and therefore cannot be used for the assessment of GES. Species considered as dinoflagellates and diatoms are only species harmful to the environment and organisms directly or indirectly consuming these micro-algae, monitored regularly as part of the national control plan for bivalve molluscs for human consumption.

The frequency of harmful algal bloom events is presented only for characterisation purposes and as an indication of significant increases in abundance of some phytoplankton species. These extreme events reflect an ecosystem, natural or anthropogenic imbalance, which favours the rapid and dominant growth of some species. The series available are short, which makes it difficult to define the terms of reference for the classification of GES, particularly for these habitats, which are subject to natural and anthropogenic change whenever they are difficult to differentiate between them.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.

It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.

It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

The available data does not include the total number of species of both groups in the diatom/dinoflagellate-ratio and therefore cannot be used for the assessment of GES. Species considered as dinoflagellates and diatoms are only species harmful to the environment and organisms directly or indirectly consuming these micro-algae, monitored regularly as part of the national control plan for bivalve molluscs for human consumption.

The frequency of harmful algal bloom events is presented only for characterisation purposes and as an indication of significant increases in abundance of some phytoplankton species. These extreme events reflect an ecosystem, natural or anthropogenic imbalance, which favours the rapid and dominant growth of some species. The series available are short, which makes it difficult to define the terms of reference for the classification of GES, particularly for these habitats, which are subject to natural and anthropogenic change whenever they are difficult to differentiate between them.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.

It cannot be concluded that observed anomalies are indicative of any trend over time, which may be the result of natural fluctuations in the productivity of the pelagic system, associated with highly variability phenomena such as the intensity of upwelling and volume of run-off from the rivers, or from anthropogenic pressures.

Analysis of information does not make it possible to identify time trends in the biovolume, the most obvious sign being its inter-annual variability. On the other hand, the information available does not allow to establish reference conditions for the allocation of the classification of GES.