ENVS 010 Lecture Notes - Lecture 4: Aposematism, Species Richness, Herbivore

• School: SJSU
• Department: Environmental Studies, Department of
• Course: ENVS 010
• Professor: Laizzer

Document Summary

Relative abundance: what percentage each species make up. Specialist species: one that takes advantage of extreme/unique conditions, weather patterns for habitats, found in limited areas. Generalists: can survive in dif. habitats, temperatures, conditions, & can eat dif. things, can survive in dif. If smth happens to their environment, there"s nowhere for them to go. If things change, there isn"t much they can do. Long-term evolutionary adjustments of species to one another. Herbivory is also a type of predation. Passive defenses: camouflage, hiding, accumulating toxins from food sources, warning coloration. Active defenses: fleeing, fighting back, alarm calls, mobbing, distraction displays. Mimicry: copycat adaptation to look like a different species. Symbiosis: 2 or more species living together in a direct contact. Parasitism: one organism benefits, while the other is harmed. Ex. eel & shrimp [shrimp cleans the eel (shrimp gets food/eel gets clean)] Importance/influence is disproportionately greater compared to its relative abundance (ex.