Report of Environmental Data from Coastal Areas of the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000 Introduction The aim of the Coastal Water Monitoring Program (CWMP) is to establish a marine monitoring system in the Egyptian coastal waters. The CWMP is part of the EIMP, which is directed by a Steering Committee with representatives from the EEAA and Danish International Development Assistance (Danida). The monitoring is carried out six times a year on a bimonthly basis on a total of 39 stations in the Gulf of Suez (13), Red Sea (15) and Gulf of Aqaba (11). The data presented in this report is from the first campaign carried out in March 2000. On each sampling campaign the following parameters are measured; visual observations (weather condition, oil pollution, and sewage impact…etc), hydrogrphical conditions (water temperature, dissolved oxygen, salinity and pH), bacteriological parameters (total coliform, E. coli and Faecal streptococci bacteria). Furthermore, the following eutrophication parameters (chlorophyll-a, total suspended matter, transparency, total nitrogen, nitrate, nitrite, ammonium, reactive and total phosphate and reactive silicate). All methods are carried out according international standards. Visual observation The visual observation on the beach revered, lumps of old tar in moderate quantities at Ras Gharib City (Su7) and in heavy quantities at Ras Sudr (Su10), whereas their coastal water were almost clean. Oil film was observed on the surface water of Suez (Su3) and Sharm El Sheikh Na-ama bay (Aq3) and in moderate quantities at the surface of Sharm El Sheikh Harbour (Aq2). Old tars and oil contamination was restricted to the beach area of petroleum companies and /or harbour areas. Sewage and its related conditions was found in little magnitude at Suez (Su1), Coral reef –Island Gezr.Gift (Re5), Quseir Middle (Re12) and Bir Shalatin (Re15). Hydrographical conditions The geographical as well as vertical distribution pattern of different hydrographical parameters obtained during March 2000 showed minor variations. Generally, no pronounced variations were found in the horizontal as well as vertical distribution pattern of dissolved oxygen contents in the coastal water in the different investigated regions. The main picture is high and well-oxygenated water column with a tendency towards a slight decrease in oxygen content with increasing depth. The effect of land based sources and/or human activities on the level of different hydrographical conditions are still insignificant. Figure1 showed dissolved oxygen concentrations in the Red Sea Regions in March 2000. 1 12 11 Gulf of Suez Red Sea proper Gulf of Aqaba 10 9 8 7 Figure 1. AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 RE12 RE10 RE8 RE6 RE4 RE2 SU13 SU11 SU9 SU7 SU5 SU3 6 SU1 Dissolved Oxygen, mg/l Dissolved Oxygen concentrations in the Red S ea Regions in March 2000 Dissolved Oxygen concentrations (mg/l) in the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000 Bacteriological Parameters The occurrence of pollution indicator bacteria is used as sanitary parameters for evaluation of water quality. By using the Egyptian Guidelines, which accept the guide values of investigated bacteria by 500 bacterial counts/100ml sea water for coliform bacteria and 100 bacterial count /100ml sea water for E. coli and Faecal streptococci. In general, most of the investigated areas have relative few bacteria, however only eleven stations were found to exceed the acceptable limit in March 2000, while in January 2000 we have only four stations. These stations are Suez (Su1b & Su1c), El-Ataka Harbour (Su3), Ain Sukhna South (Su6), Ras Gharab (Su7), Ras Shkheir (Su9), Hurghada-hotel Sheraton (Re4), Quseir-North (Re11), Bir Shalatin (Re 15) and Marina Sharm (Aq2a) and Taba (Aq11). 2 Suez, Rex (Sub1b) which may affected by the fishing harbour and possible sewage outlets in the area. Suez, Kabanoon beach (Su1c) which affected by the kabanoon drain (slaughter - house discharge) situated Just north the beach (the sampling site). El-Ataka harbor (Su3) exceeded the acceptable level of the three indicator bacteria similar to that in the last campaign. This may be due to the increasing numbers of ships in the harbor, and/or sewage outlets in the area. Ain Sukhna resort (Su6) may be affected by visitors to Ain Sukhna area. Ras Gharib City (Su7) the numbers of investigated bacteria was very high similar to levels found throughout the year 1999 and also in January 2000. Ain Sukhna resort, Ras Shukhier, petrol company GABCO (Su9) may affected by activity of some GABCO ships anchored closed to small maritime platform where the sample was taken. In Hurghada - Sheraton Hotel (Re4) and Qusier, Movenpik resort (Re11) was affected by the high numbers of tourists/ visitors and summers. Bir Shalatin (Re15) the numbers of investigated bacteria was very high, as seen in June 1999 and January 2000. This may be due to fishing activity. Marina Sharm (Aq2a) were high number of Faecal streptococci recorded like those found previously in October and April 1999 and January 2000. These findings may be explained by the large number of boats used for tourist/recreational activities anchored in the area. However in Taba (Aq11) the sample was taken in the south of Sunesta Hotel and near to Elat city, which. May explain the observed bacterial pollution in this area. Bacterial count in the Red Sea Region in March 2000 Red Sea proper coliform Gulf of Aqaba E. Coli Faecal St. RE11 Gulf of Suez 100000 RE7 Bacterial count / 100ml 1000000 10000 1000 100 10 Figure 2. Bacterial counts per 100 ml Sea water in the Gulf of Suez, Red Sea proper and Gulf of Aqaba, (logarithmic scale!) in January 2000. 3 AQ11 AQ9 AQ7 AQ5 AQ3 AQ2-A RE15 RE13 RE9 RE5 RE3-B RE2 SU13 SU11 SU9 SU7 SU5 SU3 SU1-c SU1-a 1 Eutrophication parameters Chlorophyll-a Chlorophyll-a concentrations in the coastal waters of Gulf of Suez showed increased values in the northern part including stations at (Su1-3) in comparison to the rest of the Gulf. The high levels of autotrophic biomass recorded in the upper part of Gulf of Suez may be explained by wastewater discharged to the area, providing nutrients favorable for the growth of phytoplankton. The levels of chlorophyll-a in the Red Sea proper are more or less homogenuous but showed relatively increased values in the northern part of Gulf of Aqaba than its middle and southern parts. Figure 3, represent chlorophyll-a concentration in the surface coastal water of Gulf of Suez, Red Sea proper and Gulf of Aqaba Region in March 2000. Figure 3. AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 Gulf of Aqaba RE12 RE10 RE8 RE6 RE4 SU13 Red Sea proper SU11 SU9 SU7 SU5 SU3 Gulf of Suez RE2 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 SU1 Chlorophyll-a, ug/l Chlorophyll-a concentration in the Red S ea Region in March 2000 Chlorophyll-a concentrations in the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000. Total Suspended Matter (TSM) The high values were recorded at stations (Su1, Su2 and Su3), this may be due to the direct effect of land based sources and human impact on this stations. The relative increase in TSM content in the surface coastal water of Ein El-Sukhna (Su4- Su5) and Ras Gharib city (Re7) was associated with the turbulence in the water column due to strong wind action prevailed at these locations. Relatively high TSM contents obtained at El-Goana Resort (Re1) was accompanied with the increasing numbers of ships and human activities at this location. Meanwhile in Quseir North (Re11) high TSM contents obtained may be due to the direct effect of many phosphate shipping activities from El- Hamraween phosphate Harbour to the extent made the coastal water of this station turbid. Unexpected high TSM contents found at the coastal water of Ras Mohammed (Aq1) could be attributed to the debris of brown sea grasses and algae found in moderate quantities at this position. 4 Total suspended matter concentration in the Red S ea Region in March 2000 20 TSM, mg/l Gulf of Suez Red Sea proper Gulf of Aqaba 15 10 5 Figure 4. AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 RE12 RE10 RE8 RE6 RE4 RE2 SU13 SU11 SU9 SU7 SU5 SU3 SU1 0 Total Suspended Matter concentrations in the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000. Transparency Transparency values reached the whole depth of most stations of Gulf of Suez, Red Sea proper and Gulf of Aqaba, except the upper part of Gulf of Suez. These may be due to the effect of sewage discharge in the upper part of Gulf of Suez. Ammonia In Gulf of Suez, ammonia is found in relative high levels in the surface coastal water of the upper part (Su2, Su2 & Su3) in comparison to the lower part of the Gulf of Suez. The levels of ammonia were generally low in the Red Sea proper and Gulf of Aqaba surface coastal waters. There is a tendency towards increasing ammonia values at Safaga (Re8) in comparison to the samples taken in January 2000. Ammonia that found in the surface coastal water of Gulf of Aqaba was relatively very low. Figure 4, represent ammonia concentration in the surface coastal water of Gulf of Suez, Red Sea proper and Gulf of Aqaba Regions in March 2000. 5 Ammonia concentrations in the Red S ea Region in March 2000 3.5 Gulf of Suez NH4-N, uM 3.0 Red Sea proper Gulf of Aqaba 2.5 2.0 1.5 1.0 0.5 AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 RE12 RE10 RE8 RE6 RE4 RE2 SU13 SU11 SU9 SU7 SU5 SU3 SU1 0.0 Ammonia concentrations (μmol/l NH4-N) in the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000. Figure 4. Nitrite + Nitrate The general distribution pattern of nitrite + nitrate in the Gulf of Suez, show that the upper part of the Gulf sustained relatively high nitrite + nitrate values. This area is an exception to the Red Sea Region. In general the level of nitrate were relatively low at most stations of the Red Sea proper and Gulf of Aqaba. These levels made the northern side of the Gulf of Suez classified under highly eutrophied region and reflect the principle role of untreated discharged wastes in this area with different inorganic nitrogen forms. As for ammonia, there is a tendency of increasing nitrite + nitrate values at Safaga (Re8) of the Red Sea proper. Figure 5, represent Nitrite + Nitrate concentration in the surface coastal water of Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000. Nitrite + Nitrate concentrations in the Red S ea Region in March 2000 Nitrite + Nitrate 12 Gulf of Suez Red Sea proper Gulf of Aqaba 10 8 6 4 2 Figure 5. Nitrite + Nitrate concentrations at different sites of the Gulf of Suez, Red Sea proper and Gulf of Aqaba in March 2000. 6 AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 RE12 RE10 RE8 RE6 RE4 RE2 SU13 SU11 SU9 SU7 SU5 SU3 SU1 0 Reactive phosphate (PO4-P) The level of reactive phosphate in the investigated regions revealed very low concentrations or below the detection limit at most locations. Few exceptions of higher levels were found at Ras Gharib (Su8), as in January 2000. This may be due to discharge of sewage at the area including detergents and decomposition of organic matter, which is a general component of urban sewage, may be important sources of reactive phosphate. Also high level was recorded in El-Tur (Su13). In the Red Sea proper, a relative increase in phosphorus was observed in the middle and southern part as compared to its northern part of the region. The high levels of reactive phosphate were recorded in the central part, which is characterised by increasing levels of phosphate shipping activity, since this area includes Red Sea Abo Tartour and El-Hamrawein (Re10) phosphate harbours. In Quseir (Re11), high level of phosphate may be due to hotel located in that area. While in Bir El-Shalatin (Re15) this may be due to the increasing of human activity in the fishing harbour of Bir El-Shalatin. Higher phosphorus concentration than normal was obtained from the surface coastal water of Mersa Muqibila (Aq10). Meanwhile, slight increase in reactive phosphate was also detected in the surface coastal water of Taba City (Aq11), as in January 2000. This was accompanied with high nitrate concentrations indicating possible sewage contamination. Except these locations phosphorus concentrations were almost near depletion or below the detection limit at most locations of the investigated regions. Figure 6, represent reactive phosphate concentration in the surface coastal water of Gulf of Suez, Red Sea proper and Gulf of Aqaba region in March 2000. Figure 6. AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 Gulf of Aqaba RE12 RE10 RE8 RE6 RE4 SU13 SU11 Red Sea proper SU9 SU7 SU5 SU3 Gulf of Suez RE2 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 SU1 PO4-P, uM Reactive phosphate concentrations in the Red S ea Region in March 2000 Reactive phosphate (μmol/l PO4 – P) concentrations at different sites of the Gulf of Suez, Red sea proper and Gulf of Aqaba in March 2000. 7 Silicate (SiO4 – Si) Silicate is a good indicator of fresh water dispersion and of the potential for diatom blooms. Silicate content when compared with those of the previous data showed noticeable changes in the Gulf of Suez and slight variations in the Red Sea proper and Gulf of Aqaba. S ilicate concentrations in the Red S ea Region in March 2000 SiO4-Si, uM 6 Gulf of Suez 5 Red Sea proper Gulf of Aqaba 4 3 2 1 Figure 7. AQ11 AQ9 AQ7 AQ5 AQ3 AQ1 RE14 RE12 RE10 RE8 RE6 RE4 RE2 SU13 SU11 SU9 SU7 SU5 SU3 SU1 0 Silicate concentrations at different sites of the Gulf of Suez., Red Sea proper and Gulf of Aqaba in March 2000. Conclusion: The northern part of the Gulf of Suez (Su1, Su2 and Su3) is in general heavily influenced by wastewater discharge whereas the Red Sea region in general reveals low levels of the measured parameters. However, few stations in the southern part of in the Red Sea proper still reveal higher levels of reactive phosphate (Re10 to 13). In the northern part of the Gulf of Suez the levels of nutrients like nitrate-nitrite, ammonia and total-N are significantly higher in comparisons to the rest of the Gulf of Suez, including also the Red Sea proper and the Gulf of Aqaba. The biological response to these high levels of nutrients is found in the relative higher levels of phytoplankton biomass in the area measured as chlorophyll-a. The high levels of total suspended matter and low levels of transparency also support these findings in the vicinity of the city of Suez. The likely explanations to these findings are the discharge of untreated or partly untreated waster water form the city of Suez and the heavy maritime transportation in the area. Bacterial contamination is found in several areas in both the Gulf of Suez and the Red Sea proper. The affected areas are specifically; Su1b & c, Su3 and Su6, Su7 and Su9 in the Gulf of Suez whereas the affected areas in the Red Sea proper are Re4, Re11 and Re15. In the Gulf of Aqaba contamination is found specifically in Marina Sharm and Aq11 close to Taba. 8 Table 1 summarized the most important points for Red Sea Regions in March 2000. Station Su1 Su2 Su3 Su4 Su5 Su6 Su7 Su8 Su9 Su10 Su11 Su12 Su13 Re1 Re2 Re3 Re4 Re5 Re6 Re7 Re8 Re9 Re10 Re11 Re12 Re13 Re14 Re15 Aq1 Aq2a Aq2b Aq3 Aq4 Aq5 Aq6 Aq7 Aq8 Aq9 Aq10 Aq11 Name Suez Suez Suez Ain Sukhna Ain Sukhna Ain Sukhna Ras Gharib Ras Gharib Ras Shukheir Ras Sudr Abu Zenima Ras Budran El Tur Abu Shar Hurghada Hurghada NIOF Hurghada beach Hurghada Sheraton Gifton Island Sahl Hashish Safaga Safaga Safaga El-Hamarawein Quseir Quseir Quseir Marsa Alam Bir El-Shalatin Sharm El-Sheikh Ras Mohamed Sharm El-Sheikh Harbour Sharm El-Sheikh Harbour Sharm El-Sheikh Naeama bay Nahlat Al Tel Dahab Ras Mamlah Hibeiq-Ras Nabar Nuweiba, El-Saidin Nuweiba Mersa Muqibila Taba Remarks 2, 3 , 6, 7 2, 3, 4, 5, 6, 7 1, 2, 3 , 5, 6, 7 6 2, 6 1 4 7 2 5 4 1, 4 2 1, 5 4 4 Notes: 9 1. 2. 3. 4. 5. 6. 7. Bacteria above acceptable level. High Levels of chlorophyll-a High levels of nitrate High Levels of reactive phosphate High levels of ammonia High levels of total suspended matter High level of Silicate 10