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African pediatric surgery (PS) faces multiple challenges. Information regarding existing resources is limited. We surveyed African pediatric surgeons to determine available resources and clinical, educational, and collaborative needs.Members of the Pan-African Pediatric Surgical Association (PAPSA) and the Global Pediatric Surgery Network (GPSN) completed a structured email survey covering PS providers,...
How food abundance affects (1) whether or not individuals defend territories and (2) what size of territory is defended are crucial to understanding the role that territoriality plays in regulating the population size of stream-dwelling salmonids. The threshold model of feeding territoriality predicts that territorial defence will be most intense at intermediate levels of food abundance, whereas optimal...
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