Date of Award
Program or Major
Master of Science
Piped streams, or streams that run underground, are common features in urban areas. However, there is little empirical evidence regarding their ecological structure and function. This study measured ecosystem metabolism, nutrient uptake, and related characteristics of Pettee Brook -- an urban stream that flows through several pipes under impervious surfaces near the UNH (Durham) campus.
Piped and open reaches of Pettee Brook had similar water quality, nutrient uptake, and ER. However, the absence of light in piped reaches led to their complete loss of GPP. Benthic AFDM and chlorophyll a biomass were also significantly reduced in piped reaches. For both open and piped reaches, spring metabolism and nutrient uptake were elevated compared to summer rates.
The results suggest that ecological conditions in piped streams may be degraded beyond the extent of other urban stream reaches. However, piped stream reaches may still offer some ecosystem services such as nutrient uptake during ER.
Hope, Amanda, "Ecosystem structure and function in an urban, piped stream" (2012). Master's Theses and Capstones. 701.