Table 2

Means annual of physic-chemical parameters in some Tunisian reservoirs stocked with mullet fingerlings.

  Hydrological basins       Aquatic life Irrigation Raw waters for consumption

  North East  Extreme North Ichkeul  Medjerda  Central west       
 



     
  L BM J S SSM BMt NB SS      
References a b c d c e c f c g h i CEC (1978) FAO (1994) INNORPI (2014) NT 09.13
Cond μS/cm     690   629 621 3250 1700 247     3734   3000 2500
T (°C) 19.7 20.3 22.4 20.08 22.5 20.54 22.4 20 22.6 16.9 21 23.97 22    
O2 (mg/ L) 8.7 9.02   15.6   7.78   8.6   4.58 4.6 8.26 5–9    
pH 8.49 8.5 8   7.9 7.49 7.9 8.07 7.5 8.12 8.1 8.1 6.5–9 6.5–8.4 5.5−9
Turb (NTU)     11.1   19.3 3.56 12.7 4.22 74.5     6.14 10   5000
NO3 (mg/L) 0.72 1.69 6.5 4.7 3.4 0.49 12.7 1.2 3 0.15 0.198 1.6   10 100
NO2 (mg/L) 0,07 0.08 0.01   0.01 0.007 0.01 0.23 0.01 0.039 0.046 0.05 0.01–0.03    
NH4 + (mg/L) 0.58 0.3 0.05 0.074 0.05 0.025 0.05 0.18 0.1 0.03 0.059 0.03 0.04–1.0 5 4
PO4 3 (mg/L) 0.09 0.16   0.13           0.053 0.044     2  
PT (mg/L) 0.18 0.23 0.5 0.95 0.5 0.034 0.5 0.1 0.5 0.057 0.060 0.027     0.7
SO4 2− (mg/L)     108 134.7 79 135.78 574 500 39     1335.93   960 500
Na+ mg/L     55 41.8 62 67.64 507 220 25.1     506.09   920 200
K+ (mg/L)     4 2.63 4.6 1.73 14.6 7.2 2.7     15.56   2  
Ca2+ (mg/L)     68 47.78 53 52.18 183 167 27     386.87   400 200
Mg2+ (mg/L)     19 21.26 16 9.77 65 38 7.9     105.03   60.75 100
Cl (mg/L)     81 83.64 95 75.65 664 237 37     742.30   1062 500
F (mg/L)     0.4   0.3 0.08 0.9   0.3       1.2   1.5
Fe (mg/L)       0.06   0.06             0.03   3
Zn (mg/L)     0.005 0.009 0.005 0.006 0.005           0.03   5
Cu (mg/L)     0.005 0.006 0.005 0.0072 0.005           0.002   3
SAR     1,52 1.26 1.91 2.24 8,19 3.99 1.09     5.88   15  

L: Lebna; BM: Bir Mcherga; J: Joumine; S: Sejnene; SSM: Sidi Salem; BMt: Béni Mtir; NB: Nabhena; SS: Sidi Saâd.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.