42
G. Romanescu et al.
Table 2.7 The minimum frequencies of monitoring the characteristics of surface waters
Elements
Rivers
Lakes
Transitory waters Coastal waters
Biological
Phytoplankton
Biannually
Biannually
Biannually
Biannually
Other aquatic flora
Every 3 years
Every 3 years
Every 3 years
Every 3 years
Macro-invertebrates
Every 3 years
Every 3 years
Every 3 years
Every 3 years
Ichthyofauna
Every 3 years
Every 3 years
Every 3 years
Hydromorphology
Longitudinal profile
Every 6 years
Hydrological
elements
Continually
Monthly
Morphological
elements
Every 6 years
Every 6 years
Every 6 years
Every 6 years
Physical-chemical
Temperature
3 times a year 3 times a year 3 times a year
3 times a year
Oxygen regime
3 times a year 3 times a year 3 times a year
3 times a year
Salinity
3 times a year 3 times a year 3 times a year
3 times a year
Nutrient regime
3 times a year 3 times a year 3 times a year
3 times a year
pH, alkalinity,
bicarbonates,
carbonates, hardness
3 times a year 3 times a year
Other pollutants
3 times a year 3 times a year 3 times a year
3 times a year
Priority substances
Monthly
Monthly
Monthly
Monthly
Table 2.8 The monitoring
frequency for the water
sources in the protected areas
Number of inhabitants
Frequency
<10,000
4 times/year
10,000–30,000
8 times/year
>30,000
12 times/year
on types of hydrotechnical works and their effects on aquatic ecosystems. For the
basins/hydrographical spaces in Romania, the following resulted: 413 highly modified bodies of water (17.6%); 365 bodies of water candidate for highly modified
(15.5%); 1492 bodies of water that are not highly modified (63.6%); 77 artificial
bodies of water (3.3%) [54, 98].
Among the major effects of the impact of human activities on water resources with
significant economic and social implications, the following are worth mentioning:
– The degradation of the quality of waters: 43.7% of the bodies of water risk not
achieving the environmental objectives in conformity with the provisions of the
Framework Directive 2000/60.
G. Romanescu et al.
Table 2.7 The minimum frequencies of monitoring the characteristics of surface waters
Elements
Rivers
Lakes
Transitory waters Coastal waters
Biological
Phytoplankton
Biannually
Biannually
Biannually
Biannually
Other aquatic flora
Every 3 years
Every 3 years
Every 3 years
Every 3 years
Macro-invertebrates
Every 3 years
Every 3 years
Every 3 years
Every 3 years
Ichthyofauna
Every 3 years
Every 3 years
Every 3 years
Hydromorphology
Longitudinal profile
Every 6 years
Hydrological
elements
Continually
Monthly
Morphological
elements
Every 6 years
Every 6 years
Every 6 years
Every 6 years
Physical-chemical
Temperature
3 times a year 3 times a year 3 times a year
3 times a year
Oxygen regime
3 times a year 3 times a year 3 times a year
3 times a year
Salinity
3 times a year 3 times a year 3 times a year
3 times a year
Nutrient regime
3 times a year 3 times a year 3 times a year
3 times a year
pH, alkalinity,
bicarbonates,
carbonates, hardness
3 times a year 3 times a year
Other pollutants
3 times a year 3 times a year 3 times a year
3 times a year
Priority substances
Monthly
Monthly
Monthly
Monthly
Table 2.8 The monitoring
frequency for the water
sources in the protected areas
Number of inhabitants
Frequency
<10,000
4 times/year
10,000–30,000
8 times/year
>30,000
12 times/year
on types of hydrotechnical works and their effects on aquatic ecosystems. For the
basins/hydrographical spaces in Romania, the following resulted: 413 highly modified bodies of water (17.6%); 365 bodies of water candidate for highly modified
(15.5%); 1492 bodies of water that are not highly modified (63.6%); 77 artificial
bodies of water (3.3%) [54, 98].
Among the major effects of the impact of human activities on water resources with
significant economic and social implications, the following are worth mentioning:
– The degradation of the quality of waters: 43.7% of the bodies of water risk not
achieving the environmental objectives in conformity with the provisions of the
Framework Directive 2000/60.