Relevant bibliographies by topics / Urban wetlands

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Academic literature on the topic 'Urban wetlands'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 January 2023

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Journal articles on the topic "Urban wetlands"

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Hutto, David, and Kyle Barrett. "Do urban open spaces provide refugia for frogs in urban environments?" PLOS ONE 16, no. 1 (January 22, 2021): e0244932. http://dx.doi.org/10.1371/journal.pone.0244932.

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Urbanization is among the largest threats to wildlife populations through factors such as fragmentation, isolation, and habitat destruction. Urban open spaces, such as parks and golf courses, have the potential to provide wildlife with suitable habitat within an urbanized matrix. These refugia may be particularly important for amphibians, which represent one of the most endangered and least vagile vertebrate groups on earth. During the spring and summer of 2018, we conducted surveys to determine the presence of anurans at 51 wetland sites within the Piedmont ecoregion of South Carolina. Nearly one-third of these wetlands were located within urban open spaces, one-third in low development areas, and one-third in highly developed areas. Impervious surface and total road length surrounding the wetlands were measured at two scales, a core habitat scale (300 m) and average maximum migration scale (750 m), and we measured several within-wetland habitat variables. Urban Open Space wetlands had levels of surrounding impervious surface similar to High Urbanization wetlands at the larger scale and were intermediate between Low and High Urbanization wetlands at the smaller scale. The total length of road segments occurring within buffers (at both scales) surrounding our study wetlands was higher for Urban Open Space compared to Low and High Urbanization sites. Among the within-wetland variables measured, Low Urbanization sites had higher canopy cover and were more likely to have a terrestrial buffer zone relative to the other categories. Species richness decreased significantly as total road length increased among all wetlands. Wetland category was not a significant driver explaining species richness, but β-diversity was more variable among Urban Open Space wetlands than either Low or High Urbanization wetlands. Urban Open Space wetlands did not appear to increase suitability for anurans relative to High Urbanization wetlands. Urban Open Space wetlands had higher variability in species composition, which was perhaps attributable to the diversity among sites represented in the Urban Open Space category.
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Kai Xu, Chunfang Kong, Gang Liu, Chonglong Wu, Hongbin Deng, Yi Zhang, and Qianlai Zhuang. "Changes of urban wetlands in Wuhan, China, from 1987 to 2005." Progress in Physical Geography: Earth and Environment 34, no. 2 (March 30, 2010): 207–20. http://dx.doi.org/10.1177/0309133309360626.

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Urban wetlands play a significant role in the sustainable development of the urban eco-environment. However, accelerated urbanization has caused rapid changes in urban wetland landscape patterns, which may seriously affect their functions. Based on land-use maps, TM images, and field data from the Wuhan wetlands, the spatiotemporal evolution and wetland landscape pattern were quantitatively analyzed, with reference to landscape ecology indices of diversity, fragmentation, dominance, shape, and dimension. The results showed that: (1) the natural wetland area decreased: lake wetlands and marsh wetlands decreased by 18.71% and 50.3% from 1987 to 2005, respectively; (2) artificial wetland area increased by 47.75% in Wuhan over the same period; (3) the lake wetland area of Wuhan declined due to the conversion of large lakes to smaller ones; (4) the value of the diversity index (H), evenness index (E), and fragmentation index (F) decreased, while the value of the dominance index (D) increased from 1987 to 2005; (5) the landscape shape index (LSI) and fractal dimension (FD) of the river wetlands, lake wetlands, bottomland wetlands, and marsh wetlands decreased, while the LSI and FD of the reservoir and pond wetlands increased from 1987 to 2005; and (6) natural, societal, and economic, as well as human, activities are major factors for the structural changes in the Wuhan wetland landscape, as revealed by canonical correlation analysis. Results suggest that the ecological environment of urban wetlands should be protected to maximize the services of urban wetland ecosystems in Wuhan, China.
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Gilbert, Nicolas, Roberta Fulthorpe, and Andrea E. Kirkwood. "Microbial diversity, tolerance, and biodegradation potential of urban wetlands with different input regimes." Canadian Journal of Microbiology 58, no. 7 (July 2012): 887–97. http://dx.doi.org/10.1139/w2012-066.

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Though microbial transformations are the primary mechanism of contaminant attenuation in wetlands, much remains to be known about microbial communities in urban wetlands. In this study, the microbial communities from urban wetlands with different runoff regimes (i.e., a contaminated remnant wetland, a constructed wetland, and a remnant wetland) were assessed for their capacity to attenuate and tolerate typical urban runoff pollutants. Results from denaturing gradient gel electrophoresis of 16S rRNA genes showed relatively high similarity in community composition among the wetlands. Community-level physiological profiles had similar results but exhibited within-site variation in both the contaminated remnant and remnant wetlands. All wetland communities were less tolerant to copper than 2,4-dichlorophenoxyacetic acid; however, the contaminated remnant wetland had the highest tolerance. All study wetlands had a limited capacity to biodegrade model chlorinated aromatic compounds (e.g., 2,4-dichlorophenoxyacetic acid and 3-chlorobenzoate). Though having different input regimes and contaminant exposure histories, the study wetlands were generally similar with respect to microbial community diversity and function. Additionally, the generally low capacity for these wetlands to biodegrade mobile chlorinated organic contaminants offers preliminary insight into the limited ecosystem services these wetlands may provide in urban environments.
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Husband, Danielle M., and Nancy E. McIntyre. "Urban Areas Create Refugia for Odonates in a Semi-Arid Region." Insects 12, no. 5 (May 11, 2021): 431. http://dx.doi.org/10.3390/insects12050431.

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In western Texas, most wetlands are fed from precipitation runoff, making them sensitive to drought regimes, anthropogenic land-use activities in their surrounding watersheds, and the interactive effect between these two factors. We surveyed adult odonates in 133 wetlands (49 in grassland settings, 56 in cropland, and 28 in urban areas) in western Texas from 2003–2020; 33 species were recorded. Most species were widespread generalists, but urban wetlands had the highest species richness, as well as the most unique species of any of the three wetland types. Non-metric, multidimensional scaling ordination revealed that the odonate community in urban wetlands was distinctly different in composition than the odonates in non-urban wetlands. Urban wetlands were smaller in surface area than the other wetland types, but because they were fed from more consistently available urban runoff rather than seasonal precipitation, they had longer hydroperiods, particularly during a multi-year drought when wetlands in other land-cover contexts were dry. This anthropogenically enhanced water supply was associated with higher odonate richness despite presumably impaired water quality, indicating that consistent and prolonged presence of water in this semi-arid region was more important than the presence of native land cover within which the wetland existed. Compared to wetlands in the regional grassland landscape matrix, wetlands in agricultural and urban areas differed in hydroperiod, and presumably also in water quality; these effects translated to differences in the regional odonate assemblage by surrounding land-use type, with the highest richness at urban playas. Odonates in human environments may thus benefit through the creation of a more reliably available wetland habitat in an otherwise dry region.
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Li, Tianjie, Yang Jin, and Yan Huang. "Water quality improvement performance of two urban constructed water quality treatment wetland engineering landscaping in Hangzhou, China." Water Science and Technology 85, no. 5 (February 21, 2022): 1454–69. http://dx.doi.org/10.2166/wst.2022.063.

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Abstract For typical wastewater treatment processes of urban sewage, plants are often noneffective to improve water qualities of lightly polluted domestic sewage, and urban constructed water quality treatment (WQT) wetlands designed with engineering landscape methods are utilized to optimize both water qualities and landscape values in recent years. The research determines the effects of two typical ecological engineering landscaping projects of urban constructed WQT wetlands by analysing their effects of wastewater quality improvements. Differences of water quality indicators (WQI) respectively among different treatment stages of wetlands includes surface flow wetland, vertical flow wetland, floating wetland islands etc., which have been measured and compared. Evaluation of urban constructed WQT wetlands engineering landscaping has been concluded based on comparisons among hydrological indicators and water quality indicators, i.e. pH, DO, NH3-N, CODCr, TP. Removal effects of individual indicators, includes NH3-N, CODCr and TP during different treatment stages have been quantitatively analysed. In accordance with quantitative analysis, benefits and deficiencies of practical landscape design of urban constructed WQT wetlands are concluded. By adapting proper principles in engineering landscaping, environmental and economic benefits can be achieved to create sustainable landscapes of urban constructed WQT wetlands.
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Kabiri, Stella, Molly Allen, Juduth Toma Okuonzia, Beatrice Akello, Rebecca Ssabaganzi, and Drake Mubiru. "Detecting wetland encroachment and urban agriculture land classification in Uganda using hyper-temporal remote sensing." AAS Open Research 3 (February 16, 2022): 18. http://dx.doi.org/10.12688/aasopenres.13040.2.

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Background: Urbanization is an important indicator of economic growth and social change but is associated with environmental degradation, which threatens the sustainable growth of African cities. One of the most vulnerable ecosystems in urban areas are wetlands. In Uganda, wetlands cover an area of 11% of the country’s land area. Half of the wetland areas in Ugandan cities have been converted to industrial and residential areas, and urban agriculture. There is limited information on the extent of wetland conversion or utilization for urban agriculture. The objective of this study was to investigate the extent of wetlands lost in two Ugandan cities, Wakiso and Kampala, in the last 30 years. Secondly, we extracted crop agriculture in the wetlands of Kampala and Wakiso from hyper-temporal satellite image analysis in an attempt to produce a spatial detail of wetland encroachment maps of urban agriculture using a reproducible mapmaking method. Methods: Using a field survey and free remote sensing data from Landsat TM 1986 and Landsat ETM 2016 we classified the rate of wetland loss and encroachment between the years 1986 and 2016. We used MODIS NDVI 16-day composites at a 500-meter spatial resolution to broaden the analysis to distinguish distinctive crops and crop mixtures in the encroached wetlands for urban agriculture using the ISODATA clustering algorithm. Results: Over 30 years, 72,828 ha (73%) of the Wakiso-Kampala wetlands have been lost meanwhile agriculture areas have doubled. Of this 16,488 ha (23%) were converted from wetlands. All cultivated agriculture in Kampala was in the wetlands while in Wakiso, 73% of crop agriculture was in the wetlands. The major crops grown in these urban wetlands were banana (20%), sugarcane (22%), maize (17%), Eucalyptus trees (12%), sweet potatoes (10%), while ornamental nurseries, pine trees, vegetables, and passion fruits were each at 5%.
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Wang, Ming, Dehua Mao, Yeqiao Wang, Kaishan Song, Hengqi Yan, Mingming Jia, and Zongming Wang. "Annual Wetland Mapping in Metropolis by Temporal Sample Migration and Random Forest Classification with Time Series Landsat Data and Google Earth Engine." Remote Sensing 14, no. 13 (July 2, 2022): 3191. http://dx.doi.org/10.3390/rs14133191.

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Wetlands provide various ecosystem services to urban areas, which are crucial for sustainable urban management. With intensified urbanization, there has been marked loss of urban natural wetland, degradation, and related urban disasters in the past several decades. Rapid and accurate mapping of urban wetland extent and change is thus critical for improving urban planning toward sustainability. Here, we have developed a rapid method for continuous mapping of urban wetlands (MUW) by combining automatic sample migration and the random forest algorithm (SM&RF), the so-called MUW_SM&RF. Using time series Landsat images, annual training samples were generated through spectral angular distance (SAD) and time series analysis. Combined with the RF algorithm, annual wetland maps in urban areas were derived. Employing the Google Earth Engine platform (GEE), the MUW_SM&RF was evaluated in four metropolitan areas in different geographical and climatic regions of China from 1990 to 2020, including Tianjin, Hangzhou, Guangzhou, and Wuhan. In all four study areas, the generated annual wetland maps had an overall accuracy of over 87% and a Kappa coefficient above 0.815. Compared with previously published datasets, the urban wetland areas derived using the MUW_SM&RF approach achieved improved accuracy and thus demonstrated its robustness for rapid mapping of urban wetlands. Urban wetlands in all four cities had variable distribution patterns and showed significantly decreased trends in the past three decades. The annual urban wetland data product generated by the MUW_SM&RF can provide invaluable information for sustainable urban planning and management, so as for assessment related to the United Nation’s sustainable development goals.
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Li, Han, Radmila Petric, Zinah Alazzawi, Jake Kauzlarich, Rania H. Mahmoud, Rasheed McFadden, Niklas Perslow, et al. "Four Years Continuous Monitoring Reveals Different Effects of Urban Constructed Wetlands on Bats." Land 10, no. 10 (October 14, 2021): 1087. http://dx.doi.org/10.3390/land10101087.

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Proactive artificial wetland constructions have been implemented to mitigate the loss of wetlands and their ecosystem services. As wetlands are habitats for bats, short-term (one or two years) studies find that constructed wetlands can immediately increase local bat activity and diversity. However, it is not clear how constructed wetlands affect bats through time while the wetlands are aging. We collected four years of continuous bat acoustic monitoring data at two constructed wetlands in an urban park in Greensboro, NC, USA. We examined bat activity and community composition patterns at these wetlands and compared them with reference sites in the city. With four years of data, we found that the effects of constructed wetlands were both habitat- and species-specific. The wetland in forests significantly increased bat activity, while the wetland in the open grass altered bat community composition. Specifically, in terms of species, we found that over time, constructed wetlands no longer attracted more big brown, silver-haired, or evening bats than control sites while the wetlands aged, highlighting the need to study broadly how each bat species uses natural and artificial wetlands. We emphasize the importance of long-term monitoring and the periodical evaluation of wildlife conservation actions.
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Toroitich, Caleb, Mugwima Njuguna, and Dennis Karanja. "Effects of urban wetland patch pattern on the biodiversity of aquatic birds in Nairobi, Kenya." Journal of Agriculture, Science and Technology 21, no. 1 (April 26, 2022): 83–109. http://dx.doi.org/10.4314/jagst.v21i1.8.

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Urban wetlands are ubiquitous landscape elements that affect the spatial pattern and functions of cities. Despite being rich and important habitats for a variety of birds, they are continually being isolated or lost. Isolation and loss negatively impact on the integrity of the urban landscape pattern and compromises on biophilic planning and development. Since urbanization is a continuous cultural process, it is important to investigate how its impacts, which are invariably in conflict with nature, would portend for aquatic bird communities in urban areas. This study sought to determine the variability and relationship between the structural patch pattern of palustrine wetlands in Nairobi and the species richness and abundance of aquatic birds in these wetlands. From a population of 300 wetlands, this study used heterogeneous sampling to identify and investigate 31 palustrine wetlands spread across the city of Nairobi. For each of these wetlands, a variety of landscape metrics were calculated and the species diversity of aquatic birds was quantified. Multiple regression analysis was performed in IBM SPSS Statistics 21 to determine the relationships between wetland patch pattern and wetland biodiversity. The study found that patch pattern significantly affects aquatic bird biodiversity, R² = .516, F (7, 23) = 3.498, p < .05. It was also found that the characteristics of the wetland neighbourhood significantly affected aquatic bird biodiversity, R² = .301, F (3, 27) = 3.867, p < .05. This study highlights the need to mainstream, plan, and design for the conservation and monitoring of spatial patterns and biodiversity of palustrine wetlands in urban landscapes. In doing so, biophilic cities are created, bio-systemic urban infrastructure is generated, human wellbeing is enhanced, and urban wetland ecosystem services are valued.
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HETTIARACHCHI, MISSAKA, CLIVE McALPINE, and T. H. MORRISON. "Governing the urban wetlands: a multiple case-study of policy, institutions and reference points." Environmental Conservation 41, no. 3 (November 28, 2013): 276–89. http://dx.doi.org/10.1017/s0376892913000519.

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SUMMARYWorldwide, coastal and floodplain wetlands are rapidly urbanizing, making them highly vulnerable to biodiversity loss, biological invasion and climate change. Yet urban wetlands management is an understudied area of global environmental research. Different policy approaches and institutional arrangements in place for urban wetlands governance have to be studied comparatively to obtain a better understanding of the current issues. This paper investigates four urban wetland policy regimes and the application of ecological reference points across four countries. The regimes are discussed within the context of global policy trends, urbanization patterns and environmental change. The analysis illustrates that the four cases deviate substantially in certain characteristics and converge in others. Global trends such as environmental treaties and restructuring of city spaces are common policy drivers for all cases. Conversely, the localized specific problems have yielded specialized policy responses in each case. Declaration of fixed biological reference points for wetlands were not used at any stage of the policy development process. However, the wetland managers formally or informally set up ecosystem-services oriented benchmarks for urban wetland management. Globally-applicable normative policy directives or universal ecological reference points seem bound to fail in urban wetlands governance. However, in designing effective urban wetland policy and institutions at the regional scale, both context-specific and generalized lessons from empirical policy evaluation of multiple case studies need to be jointly considered. Based on the characteristics of the policy regimes analysed in this study, a hypothetical framework for urban wetland policy evaluation is proposed; this has yet to be validated by empirical application to actual cases.
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Dissertations / Theses on the topic "Urban wetlands"

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Steinman, Alexis. "Assessment of Wetland Water Quality and Plant Species Composition across the Rural, Peri-Urban, and Urban Gradient." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28381.

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The Prairie Pothole Region, specifically eastern North Dakota, has experienced intense disturbance from agricultural demands and urban sprawl. This study assessed wetlands across the rural, peri-urban, and urban gradient to determine the impacts of urbanization on water quality and vegetation composition. Thirty wetlands were randomly selected and compared based on land use type and the impervious to pervious surface ratio within one mile of each wetland. Water quality samples were taken in 2015 and 2016, and a vegetation assessment was completed at all wetlands. Results indicate disturbance from urbanization impacts wetland water quality and vegetation composition. Rural wetland water quality and vegetation significantly differ from both peri-urban and urban wetlands, whereas peri-urban and urban wetland water quality and vegetation do not differ. Information from this study is useful to wetland professionals across the globe as urban development and sprawl continue to impact wetlands.
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Yung, Sonja Burns. "Measurement of sediment oxygen demand in a created urban wetland." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-08222009-040211/.

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Conran, Leigh Garde. "Establishment vegetation patterns in an artificial urban wetland as a basis for management." Title page, contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09ENV/09envc754.pdf.

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Cutbill, Linda Beverley. "Urban stormwater treatment by artificial wetlands." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266138.

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Balderas-Guzmán, Celina. "Strategies for systemic urban constructed wetlands." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/80907.

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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2013.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 121-128).
As a result of ubiquitous impermeable surfaces, conventional water management and stormwater infrastructure, and the resultant degradation of natural hydrologic networks, most American urban areas have suffered severely compromised hydrological function and health, particularly related to stormwater and its storage, treatment, and flow. Negative externalities exist at multiple scales: increased disaster vulnerability, climate change, poor water quality, habitat loss, etc. Because upgrading conventional single-purpose infrastructure has become an increasingly cost-prohibitive option, urban areas are finding that reincorporating natural systems can be more effective. In the last 20 years, constructed wetlands have arisen as a promising multi-purpose solution to stormwater problems. Constructed wetlands are artificial systems designed to mimic natural wetlands by using the same physical, biological, and chemical processes to treat water. They are relatively large, but their size gives them high ecological potential and numerous other benefits, such as flooding protection and recreational spaces, while having low life-cycle costs. Since the effectiveness of constructed wetlands comes from mimicking natural wetlands, then the analogy to nature should be extended as far as possible. In nature, wetlands are a system connected to a regional hydrologic network. Therefore, constructed wetlands distributed systemically throughout a watershed have potential to deliver more networked benefits than the current practice of dispersed and disconnected wetlands for individual sites. Yet little research exists examining the implications of urban constructed wetlands in design and planning terms, at multiple scales. In fact, few urban constructed wetland projects for stormwater exist in the first place. This thesis proposes a framework for understanding the potential of systemic constructed wetlands as landscape infrastructure in urban areas. Based on an understanding of science, engineering, and urbanism, this thesis identifies the urban zones of greatest potential for stormwater constructed wetlands and suggests the benefits that could arise out of an urban constructed wetland system, beyond simply water treatment.
by Celina Balderas-Guzmán.
S.M.
M.C.P.
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Wang, Chih-Yu. "Floating wetlands for urban stormwater treatment." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52036.

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A floating treatment wetland (FTW) is an ecological approach which seeks to reduce point and nonpoint source pollution by installing substrate rooted plants grown on floating mats in open waters. While relatively novel, FTW use is increasing. A review of literature identified several research gaps, including: (1) assessments of the treatment performance of FTWs; (2) evaluations of FTWs in the U.S., particularly within wet ponds that receive urban runoff; and (3) plant temporal nutrient distribution, plant growth rate, and the long-term persistence of the FTWs in temperate regions with periodic ice encasement. An assessment model, i-FTW model, was developed, and its parameter s fitted based on data from 14 published FTW studies in the first research topic. The estimated median FTW apparent uptake velocity with 95% confidence interval were 0.048 (0.018 - 0.059) and 0.027 (0.016 - 0.040) m/day for total phosphorus (TP) and total nitrogen (TN), respectively. The i-FTW model provided a more accurate prediction in nutrient removal than two common performance metrics: removal rate (mg/m2/day) and removal efficiency (%). In the second research topic, the results of a mesocosm experiment indicated that FTWs with 61% coverage, planted with pickerelweed (Pontederia cordata L.) or softstem bulrush (Schoenoplectus tabernaemontani), significantly improved TP and TN removal efficiency of the control treatment by 8.2% and 18.2%, respectively. The pickerelweed exhibited significantly higher phosphorus and nitrogen removal than the softstem bulrush when water temperatures were greater than 25 deg C. Field observations in the third research topic found that pickerelweed demonstrated higher phosphorus removal performance (7.58 mg/plant) than softstem bulrush (1.62 mg/plant). Based on the observed seasonal changes in phosphorus distribution, harvest of above-ground vegetation is recommended to be conducted twice a year in June and September. Planted perennial macrophytes successfully adapted to stresses of the low dissolved oxygen (DO) concentrations (minimum: 1.2 mg/L), ice encasement, and relatively low nutrient concentrations in the water (median: 0.15 mg/L TP and 1.15 mg/L TN). Systematic observation of wildlife activities indicated eight classes of organisms inhabiting, foraging, breeding, nursing, or resting in the FTWs. Recommendations for FTW design and suggestions for further research are made based upon these findings.
Ph. D.
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Al-Isawi, R. H. "Urban wastewater treatment with mature constructed wetlands." Thesis, University of Salford, 2016. http://usir.salford.ac.uk/41423/.

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Despite the global acceptance for the application of vertical-flow constructed wetlands (VF CWs) as sustainable and cost-efficient technology in treating various types of wastewater, including urban wastewater, continuous loading of wetlands over time can lead to performance inefficiency and generate operational problems especially when high shock loads, such as petroleum hydrocarbon spills, are subjected to the system. Contamination with petroleum hydrocarbon compounds results in changing the structure, function and ecosystem service values of wetlands, which can eventually lead to clogging of the wetland substrate and affect the life time of the system. Sound knowledge of long-term performance in mature vertical-flow constructed wetlands linked with hydrocarbon treatment processes is needed to make guided judgments about the probable effects of a given suite of impacts and revise the management plans accordingly. A study was conducted to compare the impact of different design (aggregate size) and operational (contact time, rest time and chemical oxygen demand (COD) loading) variables on the long-term and seasonal performance of vertical-flow constructed wetland filters operated in tidal flow between June 2011 and March 2016. Ten different vertical-flow wetland systems were planted with Phragmites australis (Cav.) Trin. ex Steud. (Common Reed). Approximately 130 and 975 grams of diesel fuel (equivalent to 20 and 150 grams/litre, respectively) were each poured into four wetland filters on 26/09/2013 and 26/09/2014 respectively. Overall findings showed that the mature wetland system improved the water quality except for ortho-phosphate-phosphorus (PO₄-P), which reduced less over time. Findings also indicated that the wetland filter with the highest chemical oxygen demand (COD) loading but no diesel contamination performed the best in terms of COD and biochemical oxygen demand (BOD) removal. Filters contaminated by diesel performed worse in terms of COD and BOD but considerably better regarding nitrate-nitrogen removal. The removal efficiencies dropped for those filters impacted by the diesel spills. Seasonal analysis for water quality from different wetlands showed clear seasonal outflow concentration trends (low in summer) for COD, and nitrate-nitrogen (NO₃-N) while effluent BOD showed high treatment performance in winter. No clear seasonal trend for ammonia-nitrogen (NH₄-N), PO₄-P or suspended solids (SS) was noted. Serious clogging phenomena, impacting negatively on the treatment performance and the hydraulic conductivity, were not observed. The simulation model confirms the experimental findings that notable wetland clogging restricting the operation did not occur. Moreover, results showed that small aggregate diameter, low inflow COD load, and high contact and rest time were most efficient in reducing SS accumulation within the wetland filter bed. With regard to the treatment performance of the hydrocarbon contaminants, results indicated that all wetland systems had a relatively good performance in treating petroleum hydrocarbon compounds and the evaluation showed that all the hydrocarbon components were highly degraded and their concentrations were reduced in all treated effluents of wetland filters with time. This indicates that VF CW zones provide appropriate conditions for high treatment capacity of diesel compounds spilled with urban wastewater by a combination of processes taking place in the wetland filters, thus minimizing hydrocarbon compounds within the filter. A new experimental artificial ponds system, including: ponds with wastewater; ponds with wastewater and reeds; and ponds with wastewater, reeds and aeration, was operated in parallel with the mature experimental vertical-flow constructed wetland system, for the period between July 2015 and October 2015, to compare performance, design and operation variables between the two treatment technologies in the treatment of urban wastewater. Findings showed that highest COD and SS removals were observed for wetlands in comparison to ponds. Moreover, mature wetlands were better in removing NH₄-N and PO₄-P than ponds unless the ponds were aerated. Both systems were linked with medium to high levels of BOD removal. The aerated pond system demonstrated better treatment performance in terms of NH₄-N and PO₄-P. The NO₃-N concentration increased in the aerated ponds reflecting the high oxygen availability. Due to increasing water scarcity and droughts, which are key concerns worldwide, there is considerable interest in recycling various wastewater streams, such as treated urban wastewater, for irrigation in the agricultural sector. Recycling of effluents from various wetland filters (with/without diesel contamination) was assessed for the irrigation of chilli plants (De Cayenne; Capsicum annuum (Linnaeus) Longum Group ‘De Cayenne’) grown in a greenhouse environment. Concerning chilli fruit numbers, findings showed that the highest fruit yields for all wetland filters were associated with those that received inflow wastewater with a high loading rate, reflecting the high nutrient availability in treated wastewater, which is of obvious importance for yield production. Findings also indicated that wetlands without hydrocarbon contamination, with small aggregate size, low contact time, and low inflow loading rate provided high marketable yields (expressed in economic return). In comparison, chillies irrigated by filters with hydrocarbon contamination, small aggregate size, high contact time and high loading rate also resulted in high marketable yields of chillies, which pointed out the role of high contact time and high inflow load for better diesel degradation rates. The overall outcome of this research could considerably contribute to optimization of the design and development of long-term operation variables for constructed wetland technology particularly in petroleum industry applications. Statistically validated long-term data interpretation can particularly help the wetland modelling community and wetland managers to define, with insight into long-term and seasonal factors, removal processes for individual water quality parameters to maximize wetlands treatment performance.
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Maulan, Suhardi. "A Perceptual Study of Wetlands: Implications for Wetland Restoration in the Urban Area in Malaysia." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/26966.

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The restoration of natural wetlands is a wonderful, noble and pragmatic idea, but such efforts often meet resistance from certain segments of society. One reason for this is that the public perceives the environment in different ways than do the experts, such as landscape architects and land managers. This dissertation analyzes peopleâ s preferences for wetlands in comparison to those of landscape architects. It specifically studies the conflict about the wetland restoration program in the Malaysiaâ s Kelana Jaya Municipal Park. This dissertation is based on data obtained from a preference survey using photo questionnaires that polled both the publicâ s and landscape architectsâ group preferences for wetlands. The data was analyzed using the Content Identifying Method (CIM) to determine group preferences for wetlands and factors that influence these preferences. Park managers from several local authorities also were interviewed to determine their expectations of public preferences and attitudes toward wetland restoration and public participation. The public and landscape architects have significantly differed in stated preferences for wetlands. The public strongly prefers park-like landscapes that demonstrate human influences and provide the potential for human involvement; in contrast, landscape architects prefer natural wetlands that are visually pleasing, with well-defined spaces, visual coherence, and visual complexity. In addition, park managers did not accurately predict the publicâ s view of wetlands. Their prediction was similar to landscape architectsâ preferences. Attitudes toward wetland activities and safety, knowledge about wetland benefits, the motivation to use urban natural open spaces, and familiarity with nature significantly affected the publicâ s preferences. Further, the motivation to use urban natural open spaces was the best predictor of publicâ s preferences. The primary implications of this dissertation are that environmental education should be a core activity in changing peopleâ s perceptions of natural wetlands and that opinions of local people should be incorporated in many aspect of wetlands restoration, planning, design, and policymaking, especially in Malaysia.
Ph. D.
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Porter, Abigail M. "Wetlands in the Urban Landscape: The Process of Wetlands Restoration in Baltimore, Maryland and Paris, France." Ohio University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1058301973.

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Hoa, Vu Minh, and n/a. "Mosquito habitats and predation efficiency on mosquito populations in Ginninderra Wetland, Canberra, Australia." University of Canberra. Resource & Environmental Science, 1993. http://erl.canberra.edu.au./public/adt-AUC20060725.115344.

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The ecology of mosquito populations in relation to weather conditions, emergent plants and predation in an urban wetland of Canberra was studied. Anopheles annulipes, Aedes notoscriptus, Aedes australicus, Aedes alboannulata, Culex annulirostris and Culex quinquefasciatus were found. Temperature was a major climatic factor in determining the abundance of mosquito populations in the wetland. First collections and subsequent development of mosquitoes in Ginninderra wetland are likely to depend on local weather conditions each year. The wetland proper was not a suitable habitat for mosquito breeding. Tall emergent vegetation may have obstructed oviposition and predation was also important in limiting colonization by mosquitoes. Instead, isolated temporary waterbodies which were free of predators, such as ground depressions, tyre tracks, domestic waste containers, were the most important habitats for mosquitoes adjacent to the Ginninderra wetland. Field experiments found that predation of mosquito larvae by mosquitofish Gambusia qffinis and notonectids Anisops was more efficient in sunlight than shade and this was affected by the height of emergent plants.
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Books on the topic "Urban wetlands"

1

Kusler, Jon A. Urban wetlands. S.l: s.n, 1988.

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National Wetland Symposium (1988 Oakland, Calif.). Urban wetlands: Proceedings of the National Wetland Symposium, June 26-29, 1988, Oakland, California. Edited by Kusler Jon A, Brooks Gail, Daly Sally, Association of Wetland Managers, Inc., and North American Riparian Council. Berne, N.Y: Association of Wetland Managers, 1989.

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Wetland systems to control urban runoff. Amsterdam: Elsevier, 2006.

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Gosselin, Heather M. The urban outback : wetlands for wildlife: A guide to wetland restoration and frog-friendly backyards. Toronto: Metro Toronto Zoo, Adopt-A-Pond Wetland Conservation Programme, 1995.

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Scholz, Miklas. Wetland systems: Storm water management control. London: Springer, 2011.

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River, space, design: Planning strategies, methods and projects for urban rivers. Basel: Birkhauser, 2012.

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Mark E. Taylor & Associates. Constructed wetlands for stormwater management: An annotated bibliography. Toronto, Ont: Queen's Printer for Ontario, 1992.

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Zhang, Tiantian. The use of macrophytes for heavy metal pollution control in urban wetlands. London: Middlesex Polytechnic, Urban Pollution Research Centre, 1990.

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Carr, David W. Integrating a native herbaceous wetland into stormwater management. Brooksville, Fla: Stormwater Research Program, Southwest Florida Water Management District, 1995.

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Newton, Richard B. The effects of stormwater surface runoff on freshwater wetlands: A review of the literature and annotated bibliography. Amherst, MA: Digital Photographic Research Service and Environmental Institute, University of Massachusetts, 1989.

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Book chapters on the topic "Urban wetlands"

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Hwang, Lanshing, and Ben A. LePage. "Floating Islands—An Alternative to Urban Wetlands." In Wetlands, 237–50. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0551-7_14.

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Rogerson, Robert. "Artificial Urban Wetlands." In The Palgrave Encyclopedia of Urban and Regional Futures, 1–6. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-51812-7_193-1.

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Rogerson, Robert. "Artificial Urban Wetlands." In The Palgrave Encyclopedia of Urban and Regional Futures, 1–6. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-51812-7_193-1.

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Rogerson, Robert. "Artificial Urban Wetlands." In The Palgrave Encyclopedia of Urban and Regional Futures, 39–44. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87745-3_193.

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Xue, Zhenshan, Zhongsheng Zhang, Caifeng Cheng, and Tingting Zhang. "Cooling Effects of Urban and Peri-Urban Wetlands: Remote Sensing." In Wetlands and Habitats, 115–24. Second edition. | Boca Raton: CRC Press, [2020] | Revised: CRC Press, 2020. http://dx.doi.org/10.1201/9780429445507-16.

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Palta, Monica M., and Emilie K. Stander. "Wetlands in Urban Environments." In The Routledge Handbook of Urban Ecology, 371–82. Other titles: Handbook of urban ecology Description: Second Edition. | New York: Routledge, 2020.: Routledge, 2020. http://dx.doi.org/10.4324/9780429506758-32.

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Mishra, Himansu S., Simon Bell, Anna Wilczynńska, and Jekaterina Balicka. "Urban wetlands and storm water management." In Urban Blue Spaces, 336–71. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429056161-17.

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McInnes, Robert J. "Local Climate Regulation by Urban Wetlands." In The Wetland Book, 1–4. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6172-8_227-2.

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McInnes, Robert J. "Local Climate Regulation by Urban Wetlands." In The Wetland Book, 1181–84. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-90-481-9659-3_227.

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Ioja, Cristian, and Salman Qureshi. "Urban Wildland—Forests, Waters and Wetlands." In Cities and Nature, 177–287. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37716-8_5.

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Conference papers on the topic "Urban wetlands"

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Das, Nirupam, and Surabhi Mehrotra. "Wetlands in Urban Contexts: A Case of Bhoj Wetland." In IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2021. http://dx.doi.org/10.1109/igarss47720.2021.9554693.

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McCarty, M., A. Ravestein, C. Streb, and D. O’Heney. "Large Scale Floating Wetlands for Urban Waterfronts." In 15th Triennial International Conference. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482629.008.

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Miller, Jill N., Nicholas Pansic, and Suzanne Malec. "Stream Restoration in the Urban Environment." In Wetlands Engineering and River Restoration Conference 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40581(2001)86.

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Goldsmith, Wendi, Kirk R. Barrett, Marit Larson, and William Lattrell. "Urban Channel Restoration: Design and Monitoring." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)168.

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Butera, Bob, and Daniel Billman. "Urban Stream Restoration in Anchorage, Alaska." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)4.

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Byars, Morgan S., and Mike Kelly. "Sediment Transport in Urban Stream Restoration Design." In Wetlands Engineering and River Restoration Conference 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40581(2001)3.

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Traver, Robert G. "Comparison of Routing Techniques in a Stormwater Wetlands BMP." In Ninth International Conference on Urban Drainage (9ICUD). Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40644(2002)33.

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Avery, Kenneth, Craig Fischenich, Hollis Allen, Joseph Redican, and Chris Hempel. "Meeting Multiple Objectives for an Urban Stream Project." In Wetlands Engineering and River Restoration Conference 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40581(2001)87.

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Schagrin, Adrian, Paul Makowski, and Rick Scaffidi. "Urban Stream Restoration on Tributaries of Accotink Creek." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)3.

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Wu, Xiaohui, Miklas Scholz, and Lin Rao. "Constructed Wetlands treating Urban Runoff Contaminated with Nitrogen." In 2008 2nd International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icbbe.2008.405.

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Reports on the topic "Urban wetlands"

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Mahan, Brent L. Valuing Urban Wetlands: A Property Pricing Approach,. Fort Belvoir, VA: Defense Technical Information Center, March 1997. http://dx.doi.org/10.21236/ada326734.

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Stimmel, Elisabeth, Peter Goodwin, and Diane Menuz. Updated Wetland Mapping in Cache County. Utah Geological Survey, May 2022. http://dx.doi.org/10.34191/c-133.

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The Utah Geological Survey (UGS) recently updated wetland mapping in Cache County to provide accurate spatial data for responsible urban growth and resource management. The updated mapping identifies wetlands, waterbodies, and riparian areas as part of the National Wetland Inventory (NWI) dataset and includes new, more detailed information. The updated mapping can be viewed on the NWI Wetlands Mapper or the Utah Wetlands Mapper (see Additional Resources).
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Goodwin, Peter, and Rebecca Molinari. Cache Valley Wetland Mapping: Supplemental Report. Utah Geological Survey, July 2022. http://dx.doi.org/10.34191/ofr-744.

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This report summarizes a recently completed mapping project in Cache County that had three components: mapping wetland and riparian areas to update National Wetland Inventory (NWI) mapping; applying additional Landscape Position, Landform, Water Flow path, and Waterbody Type (LLWW) attributes to enhance utility and information provided by the new mapping; and developing landscape-scale models identifying likely functions provided by wetlands across the entire project area. The project area and extent of the mapping effort covers 533,000 acres of the county and includes the entire Cache Valley as well as parts of the Blacksmith Fork, Logan River, and High Creek watersheds in the Bear River Range. The project area includes most wetland areas in Cache County and the wetlands most likely affected by agricultural and urban development.
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Desiderati, Christopher. Carli Creek Regional Water Quality Project: Assessing Water Quality Improvement at an Urban Stormwater Constructed Wetland. Portland State University, 2022. http://dx.doi.org/10.15760/mem.78.

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Stormwater management is an ongoing challenge in the United States and the world at-large. As state and municipal agencies grapple with conflicting interests like encouraging land development, complying with permits to control stormwater discharges, “urban stream syndrome” effects, and charges to steward natural resources for the long-term, some agencies may turn to constructed wetlands (CWs) as aesthetically pleasing and functional natural analogs for attenuating pollution delivered by stormwater runoff to rivers and streams. Constructed wetlands retain pollutants via common physical, physicochemical, and biological principles such as settling, adsorption, or plant and algae uptake. The efficacy of constructed wetlands for pollutant attenuation varies depending on many factors such as flow rate, pollutant loading, maintenance practices, and design features. In 2018, the culmination of efforts by Clackamas Water Environment Services and others led to the opening of the Carli Creek Water Quality Project, a 15-acre constructed wetland adjacent to Carli Creek, a small, 3500-ft tributary of the Clackamas River in Clackamas County, OR. The combined creek and constructed wetland drain an industrialized, 438-acre, impervious catchment. The wetland consists of a linear series of a detention pond and three bioretention treatment cells, contributing a combined 1.8 acres of treatment area (a 1:243 ratio with the catchment) and 3.3 acre-feet of total runoff storage. In this study, raw pollutant concentrations in runoff were evaluated against International Stormwater BMP database benchmarks and Oregon Water Quality Criteria. Concentration and mass-based reductions were calculated for 10 specific pollutants and compared to daily precipitation totals from a nearby precipitation station. Mass-based reductions were generally higher for all pollutants, largely due to runoff volume reduction on the treatment terrace. Concentration-based reductions were highly variable, and suggested export of certain pollutants (e.g., ammonia), even when reporting on a mass-basis. Mass load reductions on the terrace for total dissolved solids, nitrate+nitrite, dissolved lead, and dissolved copper were 43.3 ± 10%, 41.9 ± 10%, 36.6 ± 13%, and 43.2 ± 16%, respectively. E. coli saw log-reductions ranging from -1.3 — 3.0 on the terrace, and -1.0 — 1.8 in the creek. Oregon Water Quality Criteria were consistently met at the two in-stream sites on Carli Creek for E. coli with one exception, and for dissolved cadmium, lead, zinc, and copper (with one exception for copper). However, dissolved total solids at the downstream Carli Creek site was above the Willamette River guidance value 100 mg/L roughly 71% of the time. The precipitation record during the study was useful for explaining certain pollutant reductions, as several mechanisms are driven by physical processes, however it was not definitive. The historic rain/snow/ice event in mid-February 2021 appeared to impact mass-based reductions for all metals. Qualitatively, precipitation seemed to have the largest effect on nutrient dynamics, specifically ammonia-nitrogen. Determining exact mechanisms of pollutant removals was outside the scope of this study. An improved flow record, more targeted storm sampling, or more comprehensive nutrient profiles could aid in answering important questions on dominant mechanisms of this new constructed wetland. This study is useful in establishing a framework and baseline for understanding this one-of-a-kind regional stormwater treatment project and pursuing further questions in the future.
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Lascheck, Robert. Long-Term Managed Flooding to Control Invasive Phalaris arundinacea L. and Help Restore Native Vegetation in an Urban Palustrine Wetlands Ecosystem. Portland State University, March 2018. http://dx.doi.org/10.15760/mem.7.

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Hochmair, Hartwig, Adam Benjamin, Daniel Gann, Levente Juhasz, and Zhaohui Fu. Miami-Dade County Urban Tree Canopy Analysis. Florida International University, 2021. http://dx.doi.org/10.25148/gis.009116.

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This assessment focuses on describing urban tree canopy (UTC) within the Urban Development Boundary of Miami-Dade County, as defined by the Miami-Dade County Transportation Planning Organization (Figure 1). The area (intracoastal water areas excluded) encompasses approximately 1147 km2 (443 mi2). A combination of remote sensing and publicly available vector data was used to classify the following land cover classes: tree canopy/shrubs, grass, bare ground, wetland, water, building, street/railroad, other impervious surfaces, and cropland.
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Jenkins, Noah. First season effects of managed flooding on the invasive species Phalaris arundinacea L. and shoreline vegetation communities in an urban wetland. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5490.

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Constituent-load changes in urban stormwater runoff routed through a detention pond-wetlands system in central Florida. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri854310.

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Quantity and quality of urban storm runoff in the Irondequoit Creek basin near Rochester, New York; Part 2, Quality of storm runoff and atmospheric deposition, rainfall-runoff-quality modeling and potential of wetlands for sediment and nutrient retention. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri854113.

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The effects of flow-path modification on water-quality constituent retention in an urban stormwater detention pond and wetland system, Orlando, Florida. US Geological Survey, 1996. http://dx.doi.org/10.3133/wri954297.

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