EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021

(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)

5/21/2019 | 9:45 AM - 10:00 AM | PAST RESTORATION: SUCCESS OR FAILURE? AND WHAT ARE THE CRITERIA? | 150 G

PAST RESTORATION: SUCCESS OR FAILURE? AND WHAT ARE THE CRITERIA?

Stream restoration has become commonplace for managing watersheds such as the Delaware Basin. Collaboration between managers, practitioners, and researchers is key; from identifying priority areas, to planning and implementing appropriate management actions, and monitoring conditions surrounding the work. We assessed paired sites at 18 stream and bank restorations that had been implemented in the Delaware and Chesapeake Watersheds in Pennsylvania in the last 7-20 years. Our aim was to use bioindicators and habitat to determine whether these projects had the desired effects of improving ecosystem integrity. Across all sites sampled for diatoms, macroinvertebrates and fish communities, we did not find statistically significant differences in the assemblages (biological communities) between pairs of restored and unrestored reaches, but we see more value in the site-by-site observations of change than the statistical analyses of the whole dataset. Our team worked closely with county conservation districts in southeast PA to identify priorities for what types of projects to study and specific site selection to ensure the utility of study findings to managers. Certain environmental variables indicate improvement, but it is difficult to decide which indicators must show improvement to label a project as "successful."

Invertebrate
Aquatic-terrestrial Linkage
Algae

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Presenters/Authors

Stefanie Kroll (), Academy of Natural Sciences of Drexel University, sak345@drexel.edu;