View Abstract

CHALLENGES OF CONNECTIVITY WITHIN URBAN LANDSCAPES: EXAMPLES FROM THE BALTIMORE ECOSYSTEM STUDY

Connectivity of urban water bodies has been substantially changed due to hydrological, physicochemical, and biological alterations throughout upland, riparian, and aquatic environments. For example, drainage networks of impervious surface areas often use storm drains to allow runoff to bypass infiltration or riparian zones, causing flashier hydrographs and increases in contaminant loading. In addition to direct effects on water bodies, urbanization can also alter reciprocal connections from aquatic to terrestrial environments. For example, direct connections between wastewater and urban water bodies causes increased pharmaceutical loading in urban streams. While pharmaceuticals have myriad direct effects on ecosystem structure and function within stream ecosystems, they also impact the emergence of aquatic macroinvertebrates, reducing the connection between aquatic and terrestrial ecosystems. In addition, various strategies for rehabilitating urban ecosystem functioning (e.g., retention ponds, floodplain restorations) are often aimed at enhancing connectivity, either explicitly or implicitly. Using results from the Baltimore Ecosystem Study and other work focused on common urban contaminants, we will summarize the impacts of connectivity impairments in urban aquatic ecosystems. In particular, we will focus on how numerous problems associated with urbanization are driven primarily by altered connectivity, and how these problems may be addressed by directly improving connectivity issues across the urban landscape.

Authors

Reisinger, A. J., Cary Institute of Ecosystem Studies, USA, reisingera@caryinstitute.org

Rosi-Marshall, E. J., Cary Institute of Ecosystem Studies, USA, rosimarshalle@caryinstitute.org

Richmond, E., Monash University, Australia, erinn.richmond@monash.edu

Kaushal, S. S., University of Maryland, USA, skaushal@umd.edu

Groffman, P. M., City University of New York, USA, groffmanp@caryinstitute.org

Details

Oral presentation

Session #:075
Date: 03/01/2017
Time: 14:45
Location: 306 B

Presentation is given by student: No