The social media network Facebook™ was used to gather information on the occurrence and geographical distribution of dusky grouper dermatitis, a skin lesion affecting the dusky grouper, Epinephelus marginatus. Dusky grouper are common targets for spear fishermen in the Mediterranean and by monitoring spearfishing activity in Libyan waters, it was possible to document skin lesions from their entries on Facebook. Thirty-two Facebook accounts and 8 Facebook groups posting from 23 Libyan coastal cities provided a retrospective observational data set comprising a total of 382 images of dusky grouper caught by spearfishing between December 2011 and December 2015. Skin lesions were observable on 57/362 fish, for which images were of sufficient quality for analysis, giving a minimal prevalence for lesions of 15.75%. Only dusky grouper exceeding an estimated 40 cm total length exhibited lesions. The ability to collect useful data about the occurrence and geographical distribution of pathological conditions affecting wild fish using social media networks demonstrates their potential utility as a tool to support epidemiological studies and monitor the health of populations of aquatic animals. To our knowledge, this represents the first time that such an approach has been applied for assessing health in a wild population
Jamila taher ahmed rizgalla(1-2017)

مجلة العلوم الأساسية والتطبيقية 2007 وزن الميلاد والوزن عند عمر 70 يوم ووزن الفطام وما بعد الفطام في الضأن البربري الليبي عبدالكريم أحتاش و عياد مجيد و محمد صنام و نورالدين الجعودي الملخص: تضمنت الدراسة سجلات لمعدلات النمو لعدد 514 رأساً من حملان الضأن البربري الليبي التابعة لمحطة بئر الغنم البحثية (مركز بحوث الثروة الحيوانية). تهدف هذه الدراسة إلى تقييم معدلات النمو في حملان البربري الليبي من خلال الوزن عند الميلاد والوزن عند عمر 70 يوماً والوزن عند الفطام والوزن الشهري ما بعد الفطام لمدة ثلاثة شهور، بالاضافة إلى دراسة تأثير جنس الحيوان في هذه الصفات. بينت نتائج الدراسة أن متوسط الوزن عند الميلاد والوزن عند عمر 70 يوم والوزن عند الفطام والأوزان الشهرية ما بعد الفطام لحملان البربري الليبي كان 3.17 كجم و 15.99 كجم و 23.48 كجم و 25.71 كجم و 28.86 كجم و 34.28 كجم على التوالي. وكان معدل الزيادة اليومية قبل الفطام لحملان البربري الليبي 169 جم/ اليوم. وكان تأثير جنس الحيوان معنويا على جميع الصفات المدروسة، حيث تفوقت الحملان الذكور على الإناث في وزن الميلاد بـ 0.120 كجم والوزن عند عمر 70 يوم بـ 1.40 كجم والوزن عند الفطام بـ 2.700 كجم. arabic 153 English 2
عبدالكريم امحمد احمد احتاش, عياد مجيد, محمد صنام, نورالدين الجعودي(10-2007)

Sodicity and salinity can adversely affect soil structure and are common constraints to plant growth in arid regions. Current remote sensing techniques cannot distinguish between the various classes of salt-affected soils. Field and laboratory measurements of salt-affected soils are time-consuming and expensive. Mapping of the salt-affected soils can be used in soil conservation planning to identify regions with different degrees of limitations. There is a need to use existing field and laboratory measurements to create maps of classes of salt-affected soils. The objectives of this study are to classify salt-affected soils, use existing field data to interpolate and validate geospatial predictions of the classes of salt-affected soils using Geographic Information Systems (GIS), and create maps showing the different classes and distribution of salt-affected soils. The classification framework for salt-affected soils is based on electrical conductivity (ECe), soil pH and the sodium adsorption ratio (SAR), and provides four degrees of limitations to salt-affected soils: slight (normal soils), moderate (saline soils), severe (sodic soils), and extreme (saline-sodic soils). Spatial interpolation of the field data from northwestern Libya was verified by cross-validation, and maps of the salt-affected soils in the region were created. The majority of soils in this region of Libya are normal (slight degree of limitation). Twenty percent of the topsoil is saline-sodic (extreme degree of limitation). Land use recommendations and rehabilitation strategies can be developed from such maps of salt-affected soil classes. The methodology followed in this study can be applied to other arid regions around the world, particularly in developing countries where budgetary constraints limit detailed field and laboratory measurements of sodicity and salinity. arabic 11 English 70
Hamdi Zurqani, Elena Mikhailova, Christopher Post, Mark Schlautman, Julia Sharp(2-2018)