Influence of urbanization on ecological processes in wetlands

Thom, Ronald M.; Borde, Amy B.; Richter, Klaus; Hibler, Lyle F.

doi:10.1029/ws002p0005

Cited by 8 publications

(6 citation statements)

References 15 publications

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“…The more urbanized watersheds of Dog River, Upper Chickasaw, and Downtown Mobile showed above average increases in streamflow discharge and fluxes from 1948 to 2001. Previous research has confirmed that increased percentages of urban development are associated with higher runoff volumes and that a higher percentage of agriculture and pasture LCLU is correlated with higher sediment loads (Thom et al ., ; Betancourt et al ., ). Watersheds experiencing shifts to more urban land such as Fish River and Fowl River were also among the largest increases in streamflow discharges.…”

Section: Discussionmentioning

confidence: 99%

“…In Mississippi Sound, shoal grass and widgeon grass are commonly found, whereas the most extensive habitats in north Mobile Bay were the Eurasian watermilfoil, southern naiad, and wild celery (Vittor and Associates, ). Changes in watershed land cover caused by land use conversions can have dramatic effects on the runoff of sediments, nutrients, and potentially freshwater volumes (e.g., Hopkinson and Vallino, ; Thom et al ., ; D'Elia et al ., ). Orth et al .…”

Section: Introductionmentioning

confidence: 99%

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A Modeling System to Assess Land Cover Land Use Change Effects on SAV Habitat in the Mobile Bay Estuary

Estes

Al‐Hamdan

Ellis

et al. 2014

J American Water Resour Assoc

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Estuarine ecosystems are largely influenced by watersheds directly connected to them. In the Mobile Bay, Alabama watersheds we examined the effect of land cover and land use (LCLU) changes on discharge rate, water properties, and submerged aquatic vegetation, including freshwater macrophytes and seagrasses, throughout the estuary. LCLU scenarios from 1948, 1992, 2001, and 2030 were used to influence watershed and hydrodynamic models and evaluate the impact of LCLU change on shallow aquatic ecosystems. Overall, our modeling results found that LCLU changes increased freshwater flows into Mobile Bay altering temperature, salinity, and total suspended sediments (TSS). Increased urban land uses coupled with decreased agricultural/pasture lands reduced TSS in the water column. However, increased urbanization or agricultural/ pasture land coupled with decreased forest land resulted in higher TSS concentrations. Higher sediment loads were usually strongly correlated with higher TSS levels, except in areas where a large extent of wetlands retained sediment discharged during rainfall events. The modeling results indicated improved water clarity in the shallow aquatic regions of Mississippi Sound and degraded water clarity in the Wolf Bay estuary. This integrated modeling approach will provide new knowledge and tools for coastal resource managers to manage shallow aquatic habitats that provide critical ecosystem services.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Modeling System to Assess Land Cover Land Use Change Effects on SAV Habitat in the Mobile Bay Estuary

Estes

Al‐Hamdan

Ellis

et al. 2014

J American Water Resour Assoc

Self Cite

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“…The predominant focus of research on traditional wetlands had historically centered on enhancing water quality. However, more recent studies have shifted towards investigating the role of wetlands in mitigating global warming gases [41][42][43][44]. In accordance with the National Greenhouse Gas Inventory's definition, small streams could be categorized as wetlands, with self-wetlands, encompassing small streams and periodically flooded areas like retention ponds, classified as artificial wetlands [45].…”

Section: Carbon Absorption Quantification Technologymentioning

confidence: 99%

Development of Green Disaster Management Toolkit to Achieve Carbon Neutrality Goals in Flood Risk Management

Cheong,

Jeong

2024

Hydrology

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Current flood risk management projects have been criticized for their high carbon emissions, raising the need for carbon emission reduction and carbon absorption efforts to mitigate environmental impacts and achieve carbon neutrality goals. The research develops a comprehensive green disaster risk management toolkit to calculate the carbon emissions and absorption quantitatively based on the unit volume of materials and processes employed in a flood risk management project. As a result of applying the developed toolkit to a about 22,300 small stream restoration projects in Korea, the total carbon emissions were estimated to be 1,158,840.7 tons of CO2, of which 89.4% of the total carbon emissions originated from concrete-related construction activities, such as cement and ready-mixed concrete pouring. As a result of evaluating the nationwide carbon absorption results of all small stream restoration projects, total absorption by 2030 is expected to be 3.0 to 10.2 times higher than carbon emissions. The comprehensive toolkits are expected to support the selection of customized processes, materials, and methods by providing a systematic approach to calculate and minimize carbon emissions, ultimately contributing to the achievement of carbon neutrality goals in flood risk management projects.

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“…Population and economic growth have increased urbanization and conversion of rural areas into urban landscapes, and this has given rise to urban water resource management problems. The conversion of landscapes from pervious to impervious surfaces, including buildings, roads, and parking lots, has significantly changed the ecosystem hydrologic regime (Thom et al, 2001). These changes reduce infiltration rates and surface water retention storage capacities, and increase runoff rates and total runoff water volumes.…”

Section: Introductionmentioning

confidence: 99%

Hydrologic processes at the urban residential scale

Xiao

McPherson

Simpson

et al. 2006

Hydrological Processes

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Abstract:In the face of increasing urbanization, there is growing interest in application of microscale hydrologic solutions to minimize storm runoff and conserve water at the source. In this study, a physically based numerical model was developed to understand hydrologic processes better at the urban residential scale and the interaction of these processes among different best management practices (BMPs). This model simulates hydrologic processes using an hourly interval for over a full year or for specific storm events. The model was applied to treatment and control single-family residential parcels in Los Angeles, California. Data collected from the control and treatment sites over 2 years were used to calibrate and validate the model. Annual storm runoff to the street was eliminated by 97% with installation of rain gutters, a driveway interceptor, and lawn retention basin. Evaluated individually, the driveway interceptor was the most effective BMP for storm runoff reduction (65%), followed by the rain gutter installation (28%), and lawn converted to retention basin (12%). An 11 m 3 cistern did not substantially reduce runoff, but provided 9% of annual landscape irrigation demand. Simulated landscape irrigation water use was reduced 53% by increasing irrigation system efficiency, and adjusting application rates monthly based on plant water demand. The model showed that infiltration and surface runoff processes were particularly sensitive to the soil's physical properties and its effective depth. Replacing the existing loam soil with clay soil increased annual runoff discharge to the street by 63% when climate and landscape features remained unchanged.

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Influence of urbanization on ecological processes in wetlands

Cited by 8 publications

References 15 publications

A Modeling System to Assess Land Cover Land Use Change Effects on SAV Habitat in the Mobile Bay Estuary

A Modeling System to Assess Land Cover Land Use Change Effects on SAV Habitat in the Mobile Bay Estuary

Development of Green Disaster Management Toolkit to Achieve Carbon Neutrality Goals in Flood Risk Management

Hydrologic processes at the urban residential scale

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