Using stratified random sampling technique, 1552 adolescent school age boys and girls in Abha city, southwestern Saudi Arabia, were screened for mental health using Arabic validated version of SCL-90-R. The overall prevalence of mental disorders amounted to 15.5%. The most frequent mental symptoms were phobic anxiety (17.3%), interpersonal sensitivity (14.7%), and obsessive compulsive (14.5%). In logistic regression analysis, some sociodemographic conditions (father education, mother working status, ranking among brothers and sisters, and type of school) were significantly affecting mental health. General practitioners and other primary care workers need to be educated to better engage young people, to recognize mental disorders, and to deliver simple treatments, including supportive counseling, and cognitive behavior therapy. There is a need for a national program in the country to integrate youth mental-health interventions with all existing youth programs, including those in health and education.

This study aims to investigate the phytoplankton dynamics (distribution, composition) and their relation to water quality parameter in Ismailia canal and Abbassa fish farm (inlet, outlet and the fish ponds).The study was carried out from April, 2014 to May, 2015. Physical, chemical parameters and phytoplankton estimation were measured in situ and laboratory. The results showed that, the physico-chemical parameters of water were significantly varied among different seasons and the studied sites. Phytoplankton communities are represented by eight phyla namely; Chlorophyta, Cyanophyta, Euglenophyta, Bacillariophyta, Chrysophyta, Dinophyta, Cryptophyta and Xanthophyta. Their major number (22724 Org./ml) was detected at the fishponds (site C), while their minor number (9374 Org./ml) was detected at the main feeder (MF), (site A). Chlorophyceae was the predominant class at all studied sites except at (MF) where; Bacillariophyceae occupied the first predominant position. Results demonstrated that occurrence of 247 taxa of phytoplankton at (MF), 273 taxa at (inlet), 304 taxa at fishponds and 292 taxa at outlet. Also, Shannon and Weaver diversity index (H -) was studied and the results showed that the mean range of the phytoplankton diversity index (H -) was low (< 2.0) at all the studied sites and this is indication of moderate pollution. It is concluded that, both seasonal variations and physico-chemical parameters of water have great impact on phytoplankton dynamics and its biological diversity.

The present study was carried out to evaluate the primary productivity (gross, net and respiration) and its relation to some water quality parameters at Al-Abbassa fish farm (inlet, outlet and the fish ponds) and Ismailia canal which is the main feeder of this area. The study extended from April, 2014 to May, 2015. Physicochemical parameters, gross primary production (GPP), net primary production (NPP) and community respiration (CR) were measured through dissolved oxygen determination in situ and laboratory. The results showed that, the Physico-chemical parameters of water were significantly different among different seasons and the studied sites. Concerning BOD annual mean results, all the studied sites are located in the clean range. Results of (GPP), (NPP) and (CR) are higher in the fishponds compared to the other studied sites. It is concluded that the primary productivity and trophic nature were affected by increased levels of nutrients in fish ponds, where they exhibited a heterotrophic nature compared to the other sites.