Complex sentence: Some of the work, such as recent studies on the ecological effects of small dams or the ecological benefits of riparian reforestation, employ most of the center's expertise and capabilities, while other studies may involve only one or a couple of the research programs.
Split into simpler sentences: Some of the work employs most of the center's expertise and capabilities, such as recent studies on the ecological effects of small dams or the ecological benefits of riparian reforestation. Other studies may involve only one or a couple of the research programs.