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دراسة بيئية لبعض انواع صنف بطنية القدم الارضية في ثلاث محافظات وسط العراق == An Ecological Study For Some Terrestrial Gastropoda Species In Three Provinces Middle Iraq
Author name:
ايمان حسين عبد
Supervisor name:
عماد الدين عبد الهادي المختار
General topic:
Biology
Specific topic:
Environment
Degree:
Master
University:
University of Baghdad
Language:
Arabic
University location:
Baghdad
First pages:
24T2870 - p.pdf
Abstract:
اجريت الدراسة الحالية للتعرف على انواع صنف بطنية القدم الارضية المتواجدة في بعض محافظات وسط العراق (بغداد, بابل, كربلاء). اذ تم تسجيل الملاحظات الحياتية والتعرف على بيئاتها المفضلة وقياس العوامل البيئية ذات الاهمية. حيث تم تشخيص ثلاثة انواع وهي : Cornu as | The present study was conducted to identify the terresterial gastropoda species located in some provinces of middle Iraq (Baghdad, Babylon and Karbala). They were record Biological observations on their environment and learn about their prefer environments and to measure the important ecological factors. Three species were diagnosed : Cornu aspersum specie belong to Helicidae family, Monacha cantiana and Candidula gigaxii species belong to Hygromiidae family. Monthly sampling was conducted from (October 2013 - July 2014) of the three provincs on two sites per each provinc, Where the samples were collected randomly by five repeaters of one square meter once a month. The study also included soil ecological properties measuring : soil temperature, soil pH, Electrical conductivity, percentage moisture, organic matter content and soil texture.The results showed soil temperature values ranged between (8 - 30) C?, soil pH (7.33 - 7.96), Electrical conductivity (0.7 - 4.1) ds/m, percentage moisture (9 - 33) % , organic matter content (0.81 - 2.88) %. The results showed percentages rate for clay, silt and sand for Jadiriyah (38.39, 49.18, 12.43)%, Zafaraniya (36.66, 51.53, 11.81)%, Alexandria (37.93, 52.54, 9.53)%, Hindyia dam (40.54, 53.05, 6.41)%, Hosseinie (36.28, 45.81, 17.91)% and Twerij (37.79, 50.20, 12.01)%. Generally soil texture clay silt sandy soil for all study sites. The relative abundance of the studied species was recorded, The lowest value for Candidula gigaxii specie was 7.3 % in March in Hindyia dam, while the highest value was recorded for Cornu aspersum specie 75.0 % in December 2013 in Jadiriyah. Rates of population density (individuals / m 2) were calculated for the studied specimens and the results showed the presence of significant differences when comparing the study sites during research period. The population density rates for species the results showed the lowest value for Candidula gigaxii specie 0.4 (individual/m²) in October 2013 in Jadiriyah, and the highest value for Cornu aspersum specie 19.4 (individual/m²) in Janeuary 2014 in Jadiriyah. The results showed that Candidula gigaxii specie is found in sites (Jadiriyah, Zafaraniya, Hindyia dam(along research period, While the results did not record the presence of it in sites (Alexandria, Hosseinie, Twerij).The study showed presence of positive and negative significant relationships between species and soil ecological properties, as it were for Cornu aspersum specie negative significant relationship with air and soil temperature (0.827, 0.763) respectively, positive significant relationship with moisture and organic matter content (0.703, 0.880) respectively, while the results did not record significant differences with pH and Electrical conductivity (0.096, 0.168) respectively. Monacha cantiana specie has recorded negative significant relationship with air and soil temperature (0.431, 0.553) respectively, positive significant relationship with percentage moisture and organic matter content (0.368, 0.550) respectively, while did not record significant differences for pH and Electrical conductivity (0.214, 0.096) respectively. The results showed for Candidula gigaxii specie negative significant relationship of air and soil temperature (0.504, 0.322) respectively, positive significant relationship with moisture and organic matter content (0.380, 0.569) respectively, While did not record significant differences with pH and Electrical conductivity (0.088, 0.170) respectively.
