Transfer-bound community college students' biology identity and perception of teaching.

Community colleges are frequently an affordable, accessible entrance to a Science, Technology, Engineering, and Mathematics (STEM) education and career, but the transition from a 2-year program to a 4-year institution can be tumultuous. In this mixed-methods study, we explore the experiences of transfer and prospective transfer students. Through surveys and interviews, we identify the challenges faced by and the supports desired by biology transfer students. We describe how community college students perceive their introductory biology courses, and we compare the biology identity and self-efficacy of these students to peers at a 4-year institution. Students expressed uncertainty about what to expect from the transfer experience, and they benefitted from interventions that made the university experience more concrete or clarified their expectations. We found that community college students are just as interested in biology as peers at a 4-year university, but they are significantly less likely to believe that others recognize them as "biology people" and report less self-efficacy regarding biology courses. Students felt particularly well-prepared for transfer after community college biology courses they described as "rigorous" and "demanding," especially because students expressed that the community college environment helped support them through the challenges of higher education.

Changes in zooplankton community, and seston and zooplankton fatty acid profiles at the freshwater/saltwater interface of the Chowan River, North Carolina.

The variability in zooplankton fatty acid composition may be an indicator of larval fish habitat quality as fatty acids are linked to fish larval growth and survival. We sampled an anadromous fish nursery, the Chowan River, during spring of 2013 in order to determine how the seston fatty acid composition varied in comparison with the zooplankton community composition and fatty acid composition during the period of anadromous larval fish residency. The seston fatty acid profiles showed no distinct pattern in relation to sampling time or location. The mesozooplankton community composition varied spatially and the fatty acid profiles were typical of freshwater species in April. The Chowan River experienced a saltwater intrusion event during May, which resulted in brackish water species dominating the zooplankton community and the fatty acid profile showed an increase in polyunsaturated fatty acids (PUFA), in particular eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The saltwater intrusion event was followed by an influx of freshwater due to high precipitation levels in June. The zooplankton community composition once again became dominated by freshwater species and the fatty acid profiles shifted to reflect this change; however, EPA levels remained high, particularly in the lower river. We found correlations between the seston, microzooplankton and mesozooplankton fatty acid compositions. Salinity was the main factor correlated to the observed pattern in species composition, and fatty acid changes in the mesozooplankton. These data suggest that anadromous fish nursery habitat likely experiences considerable spatial variability in fatty acid profiles of zooplankton prey and that are correlated to seston community composition and hydrodynamic changes. Our results also suggest that sufficient prey density as well as a diverse fatty acid composition is present in the Chowan River to support larval fish production.