Final answer:
The question falls under the field of Biology, touching on marine biology and the various scientific disciplines a marine ecologist might study, such as physiology and its impact on marine ecosystems. It also indirectly includes the historical aspect of how economics influenced early sociology studies.
Step-by-step explanation:
The subject of the question is Biology, specifically within the context of marine biology. A marine ecologist would include various topics in their studies, such as the physiology of marine organisms, oceanographic processes, interactions within and among species, and the effects of human activities on marine ecosystems. The studies could encompass various branches of science, including but not limited to physiology, which focuses on the function of organisms, and related disciplines such as geophysics and agriculture which could have indirect impacts on marine life.
Regarding the history of sociology, early sociology studies examined several aspects of human society, including economics, highlighting the interplay between social behavior and economic conditions. Notably, the examples provided, such as the works of Norse, E. A. and Crowder, L. B. on marine conservation and those related to food by Ohnuki-Tierney, Emiko and Phillips, Lynne, underline the influence of societal and biological dynamics on historical and contemporary issues.