کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4390375 | 1305169 | 2011 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimating biogeochemical and biotic interactions between a stream channel and a created riparian wetland: A medium-scale physical model
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Estimating biogeochemical and biotic interactions between a stream channel and a created riparian wetland: A medium-scale physical model Estimating biogeochemical and biotic interactions between a stream channel and a created riparian wetland: A medium-scale physical model](/preview/png/4390375.png)
چکیده انگلیسی
Straightened channels and altered and drained adjacent riparian wetlands have adversely impacted streams and rivers throughout the US Midwest. This research investigated the biological connection and water quality of a 0.07 ha diversion wetland and adjacent stream at the Olentangy River Wetland Research Park in central Ohio. Before the flowthrough conditions were established, we demonstrated with mark and recapture techniques that the wetland already was a biorefuge for fish under extreme conditions; two species (Centrarchidae) captured in the stream before a total drawdown of the stream were found in the wetland a year later. In addition, water at the bottom remained at around 4 °C over the winter likely due to groundwater input, which possibly provided a warmer shelter for fish. Stream water quality of the lower section, downstream of the wetland outlet, generally improved with hydrologic pulsing in spring after flow-through reconnection due to the trapping of nutrients in the wetland. Mean removal per flood pulse for nitrate-nitrite, total nitrogen (TN), soluble reactive phosphorus (SRP), total phosphorus (TP) were 1.81 g-N mâ2 per pulse, 1.02 g-N mâ2 per pulse, 0.014 g-P mâ2 per pulse, and 0.004 g-P mâ2 per pulse, respectively. The wetland exported 2.8 g-C mâ2 per pulse of organic carbon. A greater attenuation of NO3â and TP occurred in the marshy outlet channel section of the wetland than the open water section. The diversion wetland successfully removed nitrate and phosphorus during storm pulses in spring. Similar designs should be applied to other locations to examine their function under different climatic and hydrological conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 37, Issue 7, July 2011, Pages 1035-1049
Journal: Ecological Engineering - Volume 37, Issue 7, July 2011, Pages 1035-1049
نویسندگان
Jung-Chen Huang, William J. Mitsch, Dave L. Johnson,