The name for a scientist who studies ecosystems is an ecologist. Ecologists examine the relationships between living organisms and their environment, focusing on interactions among species as well as between organisms and their physical surroundings. Their work encompasses various levels of biological organization, from individual organisms to populations, communities, and entire ecosystems. Ecologists play a crucial role in understanding biodiversity, ecosystem dynamics, and the impacts of human activities on the environment. Their research informs conservation efforts, helps manage natural resources sustainably, and addresses ecological challenges like climate change and habitat destruction.