fundamental The realized niche of an organism niche is smaller than the fundamental niche due to competition, realized predation,parasitism,and niche recruitment limitations fundamental The realized niche of an organism niche is larger than the fundamental niche due to resource realized enhancement,habitat amelioration, niche predation refuge,and recruitment enhancementfundamental fundamental niche realized realized niche The realized niche of an organism The realized niche of an organism is smaller than the fundamental is smaller than the fundamental niche due to competition, niche due to competition, predation, parasitism, and predation, parasitism, and recruitment limitations recruitment limitations fundamental fundamental niche realized realized niche The realized niche of an organism The realized niche of an organism is larger than the fundamental is larger than the fundamental niche due to resource niche due to resource enhancement, habitat amelioration, enhancement, habitat amelioration, predation refuge, and recruitment predation refuge, and recruitment enhancement enhancement