The first post on this topic established that the Salton Sea is an ecological oasis and one of the last existing stops in southern California for migratory birds along the Pacific Flyway. However, it was mentioned previously that there are many factors which are threatening this avian Eden. Each of these threats will be addressed in more detail individually, with the first being avian botulism toxin.
Avian botulism toxin is produced by the bacteria Clostridium botulinum. While the bacteria is commonly found in soils and wetlands, it will not produce the botulism toxin unless certain environmental conditions are met. In order for the bacteria to produce the toxin, it needs an anaerobic environment, warm temperatures, and a protein source. Do these conditions sound familiar? In the summer, low dissolved oxygen levels, high temperatures, and the presence of dead algae (protein source) in the Salton Sea provide an ideal environment for the growth of C. botulinum and the subsequent production of avian botulism toxin. Continue reading “The Bird is the Word, Part 2”