What is the fine-grained topic of the following text: I worked as a biologist/consultant for BHE Environmental Inc. in Cincinnati from 2006 to 2009 doing endangered species work all over the U.S. From 2009 to the present, I have worked as an Environmental Specialist 2/Biologist with ODNR Division of Mineral Resources Management AMD Program studying the impacts of acid mine drainage on the biological water quality of Ohio's streams. Only return the topic.
Professional experience in environmental biology and consulting