Showing papers in "Ecological Engineering in 2006"

TL;DR: In this paper, the effect of initial nitrogen and phosphorus concentrations on nutrient removal performance of microalgae Chlorella vulgaris and to determine biokinetic coefficients such as k ; reaction rate constant, K m, half saturation constant, and Y, yield coefficient by using Michaelis-Menten rate expression.

TL;DR: In this article, the physical and chemical mechanisms controlling algal bloom and hypoxia dynamics were examined using the eutrophic Neuse River Estuary (NRE), North Carolina, USA, as a case study.

TL;DR: In this article, the authors investigated the interactions of wetland age, water temperature, organic carbon, macrophytic type and density, hydraulic conditions on denitrification rates in field and laboratory experiments.

TL;DR: An ecological and hydrologic restoration of the Mississippi-Ohio-Missouri (MOM) Basin in the United States is proposed as the solution to the reccurring hypoxic conditions in the Gulf of Mexico as discussed by the authors.

TL;DR: In this paper, the authors tested the contribution of artificial aeration on pollutant removal in horizontal subsurface flow constructed wetlands, with a combination of planted, unplanted, aerated and non-aerated mesocosms treating a reconstituted fish farm effluent.

TL;DR: In this paper, the performance of a mixture of river sand and dolomite (10:1, w/w) used as substrate in vertical-flow constructed wetlands in removal of phosphates was evaluated.

TL;DR: In this article, the authors explore restoration concepts, examples, and challenges from the Pacific and Gulf coasts and review the concepts of ecosystem trajectories, alternative restoration approaches, and the ideal attributes of functional self-sustaining restoration in the context of realities of restoration planning, design, and implementation.

TL;DR: The constructed wetland (CW) as mentioned in this paper was developed as a pilot integrated system for the capital city's old sanitary landfill site, which consisted of three interconnected beds, two of vertical flow and one of horizontal flow stage, filled with sand media and planted with reeds and cattails.

TL;DR: In this article, the authors conducted a summer (July-September) and a long-term (12-month) experiment that measured decomposition rates and release of chemical constituents from dominant aquatic macrophytes in a constructed wetland located in south Florida.

TL;DR: In this article, the authors compared the nutrient and metal removal of a free water surface constructed wetland, compares it with the previous small-scale prototype and discusses the observed differences.

TL;DR: In this paper, the authors developed a model, capable of predicting the performance of stormwater wetlands, ponds, vegetated swales, sediment basins and biofilters, with a single algorithm.

TL;DR: A full-scale constructed wetlands system with a total area of 80 hectares and treatment capability of 2.0 × 104 m3 d−1 was completed in 1998 in Rongcheng, Shandong Province, China.

TL;DR: In this article, it was suggested that surfactant accumulation in the soil due to greywater irrigation can create water-repellent soils, thereby affecting their flow patterns and productivity, and a flow pattern typical of hydrophobic soil was noted when the imbibition of fresh water into sands pre-treated with laundry detergent solution was tested.

TL;DR: In this paper, a short review of the last 40 years in China's ecological engineering works is presented, which includes the introduction of Spartina anglica and the measure of ecological engineering that is possible through skillfully using Spartina plantations.

TL;DR: In this article, five tropical treatment wetlands dominated by floating aquatic plants and constructed to deal with a variety of wastewaters were compared for their effectiveness in treating organic matter and nutrients in the Parismina River Basin.

TL;DR: In this article, the authors examined efforts underway or in planning to restore and manage two major coastal ecosystems, the Chesapeake Bay (Chesapeake Bay Program) and coastal Louisiana (Louisiana Coastal Area Plan and Gulf Hypoxia Action Plan), with respect to these four principles.

TL;DR: In this paper, the authors evaluated the environmental effects of a straw checkerboard through field experimental observation and found that the straw checkboard enhanced the capacity of dune systems to entrap dust deposition, leading to the accumulation of soil organic matter and nutrients and to the development of soil formation.

TL;DR: In this paper, the authors examined how dissolved oxygen levels impact sediment release of ammonia in 12 lakes and reservoirs and found that under oxic conditions, ammonia release was negligible in sediments from oligotrophic and mesotrophic sites and generally lower or reversed in eutrophic sites.

TL;DR: In this article, seasonal and temporal changes in C degradation and emissions of CH 4 and N 2 O of a boreal wetlands used to purify peat mining runoff waters 5 and 15 years after construction.

TL;DR: In this paper, hydrology typical of floodplains in the Midwestern USA was simulated in two experimental riparian marshes, with and without emergent vegetation in which soils were intermittently exposed and inundated, and in permanently inundated wetland areas.

TL;DR: In this paper, two agricultural runoff wetlands, W1 and W2, intercepting surface and tile drainage in the Lake Bloomington, Illinois, watershed were constructed in 1996 on forest soils (alfisols) between upland cropland and lake Bloomington.

TL;DR: In this paper, a survey was conducted on five slopes of differing slope integrity along the North-South Expressway, Malaysia, to study the effects of vegetation cover on slope stability.

TL;DR: In this paper, multi-temporal satellite images coupled with an NDVI-based index were used to extract landslides and assess the changes in the area after the Chi-Chi earthquake.

TL;DR: In this article, the effect of the initial concentration of settled piggery wastewater in the range from 250 to 1100mg COD/l on a mixed culture of Chlorella vulgaris and bacteria was carried out using 1-l batch culture bottles.

TL;DR: In this article, the authors assess the economics of algal turf scrubber treatment technology at the farm-scale for a hypothetical 1000-cow dairy and find that the overall operational costs per cow, per kg N and per kg P were $454, $6.20, $31.10, and $0.70, respectively.

TL;DR: In this article, a new compact wastewater treatment system for use in single houses has been constructed in eastern Norway, which consists of a septic tank followed by an aerobic biofilter succeeded by an upflow saturated filter.

TL;DR: In this article, the authors tested the hypothesis that the composition of vegetation formed during primary succession in basalt quarries is affected by the distance to, and area of, conservation-valuable biotopes of surrounding xerophilous grasslands.

TL;DR: In this paper, a methodology for evaluating fishway designs in terms of the swimming capabilities of the target species is presented, which constitutes an effective means of taking fish swimming capabilities into account at the fishway design stage.

TL;DR: The first year results from a project studying plant growth, nutrient cycling and microbial processes in a 5-year-old constructed wetland in South Bohemia, Czech Republic were reported in this paper.

TL;DR: In this article, a one-dimensional hydraulic river model is coupled with a collection of GIS routines programmed into the ArcGIS ® interface for calculating spatial distributions of depth, velocity, and spawning habitat suitability for walleye in a section of the river.