Enhanced hyporheic exchange flow around woody debris does not increase nitrate reduction in a sandy streambed
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منابع مشابه
Does the Use of In-stream Structures and Woody Debris Increase the Abundance of Salmonids?
Does the use of in-stream structures and woody debris increase the abundance of salmonids? CEE review 05-006 (SR12).
متن کاملWoody debris
1. Maximum rate of cut that would provide a hillslope landslide rate of <20% over background, assuming no areas are protected by no-cut buffers .. Summary Downstream impacts to aquatic environments and property generally occur as cumulative watershed impacts, which are usually caused by changes in the transport of woody debris, water, and sediment through a watershed. The downstream cumulative ...
متن کاملThe influence of streambed heterogeneity on hyporheic flow in gravelly rivers.
Deposits of open-framework gravel occurring in gravelly streambeds can exert a significant influence on hyporheic flow. The influence was quantified using a numerical model of the hyporheic zone. The model included open-framework gravel stratasets represented with commonly observed characteristics including a volume fraction of about one-third of the streambed sediment, a hydraulic conductivity...
متن کاملGeomorphic controls on hyporheic exchange flow in mountain streams
[1] Hyporheic exchange flows were simulated using MODFLOW and MODPATH to estimate relative effects of channel morphologic features on the extent of the hyporheic zone, on hyporheic exchange flow, and on the residence time of stream water in the hyporheic zone. Four stream reaches were compared in order to examine the influence of stream size and channel constraint. Within stream reaches, the in...
متن کاملWoody debris research: Overview
Fallen woody debris, standing dead trees (taller than 1.3 m) and stumps (shorter than 1.3 m) constitute a large portion of total above-ground carbon in tropical and temperate forests (Keller et al. 2004; Rice et al. 2004). In addition to being an important carbon pool, aboveground necromass is important in nutrient cycling, water retention, fuel load, and as resources for many organisms. Despit...
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ژورنال
عنوان ژورنال: Biogeochemistry
سال: 2017
ISSN: 0168-2563,1573-515X
DOI: 10.1007/s10533-017-0401-2