Journal article
Effects of Small Ponds on Stream Water Chemistry
Lake and reservoir management, v 22(4), pp 321-330
01 Dec 2006
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In many regions, small constructed ponds greatly exceed natural lakes in number and aggregate area. Many of these ponds are impoundments of small streams. Their effect in modifying stream water chemistry, however, remains poorly understood. Here we compare 19 physicochemical variables upstream vs. downstream of 11 ponds, sampled in March, May and July. The ponds greatly reduced inflow concentrations of SiO
2
(by 71%), NO
3
−
(by 82%) and PO
4
3−
(by 46%), while exporting water of higher pH, alkalinity and dissolved oxygen content, and much higher quantities of particulate and dissolved organic C, N and P than were present upstream. Higher % removals of NO
3
−
and SiO
2
were observed in ponds with longer hydraulic residence times. Based on ambient N:P ratios, algal periphyton below the ponds were likely P limited, but differential transformations of the components of total N vs. total P within the ponds greatly reduced N:P ratios downstream.
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Details
- Title
- Effects of Small Ponds on Stream Water Chemistry
- Creators
- G. Winfield Fairchild - West Chester UniversityDavid J. Velinsky - Drexel University
- Publication Details
- Lake and reservoir management, v 22(4), pp 321-330
- Publisher
- Taylor & Francis Group
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000243555900005
- Scopus ID
- 2-s2.0-33846411864
- Other Identifier
- 991019168181004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Limnology
- Marine & Freshwater Biology
- Water Resources