1_vodna-durektuva-es

Element

High status

Good status

Moderate status

Phytoplankton

The taxonomic composition and abundance of phyto-

There are slight changes in the composition and abun-

The composition and abundance of planktonie taxa differ

plankton correspond totally or nearly totally to undis-

dance of planktonic taxa compared to the type-specific

moderately from the type-specific communities.

turbed conditions.

communities. Such changes do not indicate any acceler-

Biomass is moderately disturbed and may be such as to

ated growth of algae resulting in undesirable disturbance

The average phytoplankton biomass is consistent with

produce a significant undesirable disturbance in the con-

to the balance of organisms present in the water body or

the type-specific physico-chemical conditions and is not

dition of other biological quality elements and the physi-

to the physico-chemical quality of the water or sediment.

such as to significantly alter the type-specific transpar-

co-chemical quality of the water or sediment.

ency conditions.

A slight increase in the frequency and intensity of the

A moderate increase in the frequency and intensity of

type specific planktonie blooms may occur.

Planktonic blooms occur at a frequency and intensity

planktonie blooms may occur. Persistent blooms may oc-

which is consistent with the type specific physico-chemi-

cur during summer months.

cal conditions.

Macrophytes

The taxonomic composition corresponds totally or nearly

There are slight changes in the composition and abun-

The composition of macrophytic and phytobenthic taxa

and phytoben-

totally to undisturbed conditions.

dance of macrophytic and phytobenthic taxa compared

differ moderately from the type-specific communities

thos

There are no detectable changes in the average macro-

to the type-specific communities. Such changes do not

and are significantly more distorted than those observed

indicate any accelerated growth of phytobenthos or high-

at good quality.

phytic and the average phytobenthic abundance.

er forms of plant life resulting in undesirable disturbance

Moderate changes in the average macrophytic and the av-

to the balance of organisms present in the water body or

erage phytobenthic abundance are evident.

to the physico-chemical quality of the water.

The phytobenthic community may be interfered with,

The phytobenthic community is not adversely affected

and, in some areas, displaced by bacterial tufts and coats

by bacterial tufts and coats present due to anthropogenic

present as a result of anthropogenic activities.

activity.

Benthic inverte-

The taxonomic composition and abundance correspond

There are slight changes in the composition and abun-

The composition and abundance of invertebrate taxa dif-

brate fauna

totally or nearly totally to the undisturbed conditions.

dance of invertebrate taxa compared to the type-specific

fer moderately from the type-specific conditions.

The ratio of disturbance sensitive taxa to insensitive taxa

communities.

Major taxonomic groups of the type-specific community

shows no signs of alteration from undisturbed levels.

The ratio of disturbance sensitive taxa to insensitive taxa

are absent.

The level of diversity of invertebrate taxa shows no sign of

shows slight signs of alteration from type-specific levels.

The ratio of disturbance sensitive to insensitive taxa, and

alteration from undisturbed levels.

The level of diversity of invertebrate taxa shows slight

the level of diversity, are substantially lower than the

signs of alteration from type-specific levels.

type-specific level and significantly lower than for good

status.

Element

High status

Good status

Moderate status

General condi-

The values of physico-chemical elements correspond to-

Temperature, oxygen balance, pH, acid neutralising ca-

Conditions consistent with the achievement of the values

tions

tally or nearly totally to undisturbed conditions.

pacity, transparency and salinity do not reach levels out-

specified above for the biological quality elements.

Nutrient concentrations remain within the range nor-

side the range established so as to ensure the functioning

of the ecosystem and the achievement of the values speci-

mally associated with undisturbed conditions.

fied above for the biological quality elements.

Levels of salinity, pH, oxygen balance, acid neutralis-

Nutrient concentrations do not exceed the levels estab-

ing capacity, transparency and temperature do not show

lished so as to ensure the functioning of the ecosystem

signs of anthropogenic disturbance and remain within

and the achievement of the values specified above for the

the range normally associated with undisturbed condi-

biological quality elements.

tions.

Specific synthet-

Concentrations close to zero and at least below the limits

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

ic pollutants

of detection of the most advanced analytical techniques

cordance with the procedure detailed in section 1.2.6

specified above for the biological quality elements.

in general use.

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Specific non-

Concentrations remain within the range normally as-

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

synthetic pol-

sociated with undisturbed conditions (background

cordance with the procedure detailed in section 1.2.6 (2)

specified above for the biological quality elements.

lutants

levels = bgl).

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Element

High status

Good status

Moderate status

Phytoplankton

The composition and abundance of the phytoplanktonic

There are slight changes in the composition and abun-

The composition and abundance of phytoplanktonic taxa

taxa are consistent with undisturbed conditions.

dance of phytoplanktonic taxa.

differ moderately from type-specific conditions.

The average phytoplankton biomass is consistent with

There are slight changes in biomass compared to the type-

Biomass is moderately disturbed and may be such as to

the type-specific physico-chemical conditions and is not

specific conditions. Such changes do not indicate any ac-

produce a significant undesirable disturbance in the con-

such as to significantly alter the type-specific transpar-

celerated growth of algae resulting in undesirable distur-

dition of other biological quality elements.

ency conditions.

bance to the balance of organisms present in the water

A moderate increase in the frequency and intensity of

body or to the physico-chemical quality of the water.

Planktonic blooms occur at a frequency and intensity

planktonie blooms may occur. Persistent blooms may oc-

which is consistent with the type specific physico-chemi-

A slight increase in the frequency and intensity of the

cur during summer months.

cal conditions.

type specific planktonic blooms may occur.

Macroalgae

The composition of macroalgal taxa is consistent with

There are slight changes in the composition and abun-

The composition of macroalgal taxa differs moderately

undisturbed conditions.

dance of macroalgal taxa compared to the type-specific

from type-specific conditions and is significantly more

There are no detectable changes in macroalgal cover due

communities. Such changes do not indicate any accel-

distorted than at good quality.

erated growth of phytobenthos or higher forms of plant

to anthropogenic activities.

Moderate changes in the average macroalgal abundance

life resulting in undesirable disturbance to the balance of

are evident and may be such as to result in an undesir-

organisms present in the water body or to the physico-

able disturbance to the balance of organisms present in

chemical quality of the water.

the water body.

Angiosperms

The taxonomic composition corresponds totally or nearly

There are slight changes in the composition of angio-

The composition of the angiosperm taxa differs moder-

totally to undisturbed conditions.

sperm taxa compared to the type-specific communities.

ately from the type-specific communities and is signifi-

There are no detectable changes in angiosperm abun-

Angiosperm abundance shows slight signs of distur-

cantly more distorted than at good quality.

dance due to anthropogenic activities.

bance.

There are moderate distortions in the abundance of an-

giosperm taxa.

Element

High status

Good status

Moderate status

General

condi-

Physico-chemical elements correspond totally or nearly

Temperature, oxygenation conditions and transparency

Conditions consistent with the achievement of the values

tions

totally to undisturbed conditions.

do not reach levels outside the ranges established so as to

specified above for the biological quality elements.

Nutrient concentrations remain within the range nor-

ensure the functioning of the ecosystem and the achieve-

ment of the values specified above for the biological qual-

mally associated with undisturbed conditions.

ity elements.

Temperature, oxygen balance and transparency do not

Nutrient concentrations do not exceed the levels estab-

show signs of anthropogenic disturbance and remain

lished so as to ensure the functioning of the ecosystem

within the range normally associated with undisturbed

and the achievement of the values specified above for the

conditions.

biological quality elements.

Specific synthet-

Concentrations close to zero and at least below the limits

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

ic pollutants

of detection of the most advanced analytical techniques

cordance with the procedure detailed in section 1.2.6

specified above for the biological quality elements.

in general use.

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Specific

non-

Concentrations remain within the range normally associ-

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

synthetic pollut-

ated with undisturbed conditions (background levels =

cordance with the procedure detailed in section 1.2.6 (2)

specified above for the biological quality elements.

ants

bgl).

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Element

High status

Good status

Moderate status

Phytoplankton

The composition and abundance of phytoplanktonic taxa

The composition and abundance of phytoplanktonic taxa

The composition and abundance of planktonie taxa show

are consistent with undisturbed conditions.

show slight signs of disturbance.

signs of moderate disturbance.

The average phytoplankton biomass is consistent with

There are slight changes in biomass compared to type-

Algal biomass is substantially outside the range associat-

the type-specific physico-chemical conditions and is not

specific conditions. Such changes do not indicate any

ed with type-specific conditions, and is such as to impact

such as to significantly alter the type-specific transpar-

accelerated growth of algae resulting in undesirable dis-

upon other biological quality elements.

ency conditions.

turbance to the balance of organisms present in the water

A moderate increase in the frequency and intensity of

body or to the quality of the water.

Planktonic blooms occur at a frequency and intensity

planktonie blooms may occur. Persistent blooms may oc-

which is consistent with the type specific physico-chemi-

A slight increase in the frequency and intensity of the

cur during summer months.

cal conditions.

type-specific planktonic blooms may occur.

Macroalgae and

All disturbance-sensitive macroalgal and angiosperm

Most disturbance-sensitive macroalgal and angiosperm

A moderate number of the disturbance-sensitive mac-

angiosperms

taxa associated with undisturbed conditions are present.

taxa associated with undisturbed conditions are present.

roalgal and angiosperm taxa associated with undisturbed

The levels of macroalgal cover and angiosperm abun-

The level of macroalgal cover and angiosperm abundance

conditions are absent.

dance are consistent with undisturbed conditions.

show slight signs of disturbance.

Macroalgal cover and angiosperm abundance is moder-

ately disturbed and may be such as to result in an unde-

sirable disturbance to the balance of organisms present in

the water body.

Benthic inverte-

The level of diversity and abundance of invertebrate taxa

The level of diversity and abundance of invertebrate taxa

The level of diversity and abundance of invertebrate taxa

brate fauna

is within the range normally associated with undisturbed

is slightly outside the range associated with the type-spe-

is moderately outside the range associated with the type-

conditions.

cific conditions.

specific conditions.

All the disturbance-sensitive taxa associated with undis-

Most of the sensitive taxa of the type-specific communi-

Taxa indicative of pollution are present.

turbed conditions are present.

ties are present.

Many of the sensitive taxa of the type-specific communi-

ties are absent.

Element

High status

Good status

Moderate status

Tidal regime

The freshwater flow regime and the direction and speed

Conditions consistent with the achievement of the values

Conditions consistent with the achievement of the values

of dominant currents correspond totally or nearly totally

specified above for the biological quality elements.

specified above for the biological quality elements.

to undisturbed conditions.

Morphological

The depth variation, structure and substrate of the coastal

Conditions consistent with the achievement of the values

Conditions consistent with the achievement of the values

conditions

bed, and both the structure and condition of the inter-

specified above for the biological quality elements.

specified above for the biological quality elements.

tidal zones correspond totally or nearly totally to the un-

disturbed conditions.

Element

High status

Good status

Moderate status

General

condi-

The physico-chemical elements correspond totally or

Temperature, oxygenation conditions and transparency

Conditions consistent with the achievement of the values

tions

nearly totally to undisturbed conditions.

do not reach levels outside the ranges established so as to

specified above for the biological quality elements.

Nutrient concentrations remain within the range nor-

ensure the functioning of the ecosystem and the achieve-

ment of the values specified above for the biological qual-

mally associated with undisturbed conditions.

ity elements.

Temperature, oxygen balance and transparency do not

Nutrient concentrations do not exceed the levels estab-

show signs of anthropogenic disturbance and remain

lished so as to ensure the functioning of the ecosystem

within the ranges normally associated with undisturbed

and the achievement of the values specified above for the

conditions.

biological quality elements.

Specific synthet-

Concentrations close to zero and at least below the limits

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

ic pollutants

of detection of the most advanced analytical techniques

cordance with the procedure detailed in section 1.2.6

specified above for the biological quality elements.

in general use.

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Specific

non-

Concentrations remain within the range normally associ-

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

synthetic pollut-

ated with undisturbed conditions (background levels =

cordance with the procedure detailed in section 1.2.6 (2)

specified above for the biological quality elements.

ants

bgl).

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Element

Maximum ecological potential

Good ecological potential

Moderate ecological potential

Biological

qual-

The values of the relevant biological quality elements re-

There are slight changes in the values of the relevant bio-

There are moderate changes in the values of the relevant

ity elements

flect, as far as possible, those associated with the closest

logical quality elements as compared to the values found

biological quality elements as compared to the values

comparable surface water body type, given the physi-

at maximum ecological potential.

found at maximum ecological potential.

cal conditions which result from the artificial or heavily

These values are significantly more distorted than those

modified characteristics of the water body.

found under good quality.

Hydromorpho­

The hydromorphological conditions are consistent with

Conditions consistent with the achievement of the values

Conditions consistent with the achievement of the values

logical elements

the only impacts on the surface water body being those

specified above for the biological quality elements.

specified above for the biological quality elements.

resulting from the artificial or heavily modified character-

istics of the water body once all mitigation measures have

been taken to ensure the best approximation to ecologi-

cal continuum, in particular with respect to migration of

fauna and appropriate spawning and breeding grounds.

Physico-chemi-

cal elements

General

condi-

Physico-chemical elements correspond totally or nearly

The values for physico-chemical elements are within the

Conditions consistent with the achievement of the values

tions

totally to the undisturbed conditions associated with the

ranges established so as to ensure the functioning of the

specified above for the biological quality elements.

surface water body type most closely comparable to the

ecosystem and the achievement of the values specified

artificial or heavily modified body concerned.

above for the biological quality elements.

Nutrient concentrations remain within the range nor-

Temperature and pH do not reach levels outside the rang-

mally associated with such undisturbed conditions.

es established so as to ensure the functioning of the eco-

The levels of temperature, oxygen balance and pH are

system and the achievement of the values specified above

for the biological quality elements.

consistent with the those found in the most closely com-

parable surface water body types under undisturbed con-

Nutrient concentrations do not exceed the levels estab-

ditions.

lished so as to ensure the functioning of the ecosystem

and the achievement of the values specified above for the

biological quality elements.

Element

Maximum ecological potential

Good ecological potential

Moderate ecological potential

Specific synthet-

Concentrations close to zero and at least below the limits

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

ic pollutants

of detection of the most advanced analytical techniques

cordance with the procedure detailed in section 1.2.6

specified above for the biological quality elements.

in general use.

without prejudice to Directive 91/414/EC and Directive

98/8/EC. (<EQS)

Specific

non-

Concentrations remain within the range normally associ-

Concentrations not in excess of the standards set in ac-

Conditions consistent with the achievement of the values

synthetic pollut-

ated with the undisturbed conditions found in the surface

cordance with the procedure detailed in section 1.2.6 (1)

specified above for the biological quality elements.

ants

water body type most closely comparable to the artificial

without prejudice to Directive 91/414/EC and Directive

or heavily modified body concerned (background levels

98/8/EC. (< EQS)

= bgl).