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Abstract
The message aims to study the content of animal vital to Ajonat number four on the coast of the Red Sea, and the study of the environment and the geographical distribution of bio-modern - and ancient if any - of these objects, and the study of the chemistry of sediment Ballajonat studied and the factors affecting them. First, the study areas Was chosen for four Ajonat along the Egyptian coast of the Red Sea to conduct the study on them, which is from north to south as follows: 1 - Lagoon Abu Gelawa This lagoon is located 7 km north of Hurghada Marine Biology Station And is characterized by its small size and shape of a rectangle to a certain extent 2 - Lagoon Abu hair Located 5 km north of Hurghada Marine Biology Station (South Lagoon Abu Gelawa distance of 2 km), a shallow lagoon 3 - Lagoon or Huwaitat Located 10 km south of the city of Safaga, and occupies an area of approximately 1500 m 2, and is surrounded by the lagoon of the eastern and southern coral reefs barefoot, and opens on the north side of the sea Second, the study taxonomic The study included taxonomic description and definition imaging Sixty-three species of marine invertebrates: 19 Foraminnifera 0.4 Jmaiat 0.20 Btunkdmyat 0.20 shellfish. A study of the geographical distribution of vital types of knowledge was found to belong to the Indian region - the Pacific, and a few of them also belongs to the Atlantic region - average. The results showed that the Lagoon or Huwaitat recorded the highest concentrations of elements: iron (1051ppm) , manganese (232 ppm) lead (6 ppm) cobalt (1.2 ppm) , copper (0.76 ppm). This is due to increased human activity in this region . While Lagoon Marina Alhuna has recorded the highest concentration of elements: zinc (9.2 ppm) , nickel (3.14 ppm) , cadmium (1.08 ppm), compared to other regions where influenced by the natural abundance of clastic sediment supply . The Lagoon Abu Gelawa As expected, it is at least in the concentration of the elements studied , as a result of direct contact with the open sea and the nature of the oxidized sediments . Record Lagoon or Huwaitat highest concentration of phosphorus (5714 ppm) compared to other regions , owing to the presence of large amounts of suspended solids in the water, resulting from the movement of ships carrying ore phosphate from the port of Abu weakling near them , in addition to increasing human activities out . Scored Lagoon Marina Alhuna less content of phosphorus (3029 ppm). Represent calcium carbonate bulk of the components of the shells of most marine organisms , so the results showed a great similarity in the content of carbonates between study areas , except Lagoon Abu Gelawa which showed the highest concentration of carbonate ( 91.7 % ) due to the abundance of coral reefs surrounding Ballajohn , as well as excellence Roasabh sand vital . According to the classification Maxwell 1968, has filed for Ajohna Gelawa Abu and Abu hair richest areas within carbonate (greater than 80% ), while the mother Ajohna Huwaitat marina Alhuna Within the carbonates is pure ( 60-80% ) . The organic materials such as hydrogen , nitrogen and carbon are deployed in soft sediments , and increase indicates increased clastic sediment supply soft and the abundance of seaweed . The letter showed that the study areas are close with each other in their content of organic materials, where he scored in Marsa Alhuna 3.6 %, while in Huwaitat or 2.2% . Fourth, the relationship between diversity and sediment geochemistry Observed a relationship between the relative diversity and Geochemistry of bottom sediments in the lagoons studied. In the Lagoon or Huwaitat , where the highest concentration values of heavy metals as well as higher content of phosphorous , also scored less and less diversity relative values in the ratio of carbonate content . On the other hand , for the record Ajohna Abu Gelawa marina Alhuna lower concentration of heavy metals and the highest relative diversity and higher carbonate content . This was due mostly to a lack of pollution in Allajohnan , the first result of the openness of the sea and the second because of a lack of human influence where the negative.