Wetland restoration to enhance biodiversity in urban areas: a comparative analysis

Kim, Kwi-Gon; Lee, Hoon; Lee, Dong-Hyun

doi:10.1007/s11355-010-0144-x

Cited by 24 publications

(8 citation statements)

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“…Recently, restoration and reconstruction of artificial habitats for aquatic life have been ongoing in the urban freshwater system in Korea . Accordingly, wetland assessment, planning, restoration design, construction oversight, and ecological monitoring based on fauna have been considered . Though the water quality of the urban freshwater system has been managed based on physicochemical parameters, there was no consideration of water quality based on biological safety for aquatic organisms including amphibians.…”

Section: Introductionmentioning

confidence: 99%

Developmental toxicity of treated municipal wastewater effluent on Bombina orientalis (Amphibia: Anura) embryos

Park

Ahn

Cho

et al. 2014

Enviro Toxic and Chemistry

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Amphibian populations have been decreasing in urban freshwater systems in Korea. To elucidate the biological safety of treated wastewater effluent (TWE) in the Tancheon basin, the capital area of Korea, a 7-d-exposure Bombina orientalis embryo developmental toxicity assay was examined during the breeding season. In March, there were no significant differences in embryonic survival or malformation among the water samples. In July, following monsoon precipitation, embryonic lethality in TWE was significantly higher than in the upstream water sample. Malformation in TWE and TWE-mixed waters was significantly higher than in the control and upstream water samples. Tail muscle height of tadpoles also significantly decreased in TWE and TWE-mixed waters. Heavy metals were not detected in any samples. Total nitrogen, total phosphorous, and chemical oxygen demand in TWE markedly increased together with a decrease in dissolved oxygen in July. The increase in organic and inorganic loading following precipitation could have made TWE and TWE-mixed water not suitable for embryonic development. Though being managed based on physicochemical criteria, the water quality of TWE may not be sufficient to assure normal development of amphibian embryos. An amphibian developmental toxicity assay would be helpful for the water-quality management of TWE and urban freshwater systems in Korea.

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Section: Introductionmentioning

confidence: 99%

Developmental toxicity of treated municipal wastewater effluent on Bombina orientalis (Amphibia: Anura) embryos

Park

Ahn

Cho

et al. 2014

Enviro Toxic and Chemistry

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“…In the present study, we found that fragments with larger areas and higher aquatic vegetation heterogeneity contained more waterbirds; however, this remains an indecisive guide for wetland managers when setting the least area criterion of constructed wetlands. Therefore, combined with the requirement for stormwater runoff (Malaviya and Singh, 2012 ) or pollution abatement efficiency (Nivala et al., 2018 ), wetland construction must integrate more ecosystem services (Kim et al., 2011 ). For improved waterbird conservation, we suggest that future studies should aim to quantify the appropriate wetland area, according to waterbird composition characteristics and their life history, to determine the smallest area necessary for constructing artificial wetlands in given regions (Garrett‐Walker et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Nestedness theory suggests wetland fragments with large areas and macrophyte diversity benefit waterbirds

Wang

Yang

2021

Ecology and Evolution

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Many artificial wetland constructions are currently underway worldwide to compensate for the degradation of natural wetland systems. Researchers face the responsibility of proposing wetland management and species protection strategies to ensure that constructed wetlands positively impact waterbird diversity. Nestedness is a commonly occurring pattern for biotas in fragmented habitats with important implications for conservation; however, only a few studies have focused on seasonal waterbird communities in current artificial wetlands. In this study, we used the nestedness theory for analyzing the annual and seasonal community structures of waterbirds in artificial wetlands at Lake Dianchi (China) to suggest artificial wetland management and waterbird conservation strategies. We carried out three waterbird surveys per month for one year to observe the annual, spring, summer, autumn, and winter waterbird assemblages in 27 lakeside artificial wetland fragments. We used the NeD program to quantify nestedness patterns of waterbirds at the annual and seasonal levels. We also determined Spearman partial correlations to examine the associations of nestedness rank and habitat variables to explore the factors underlying nestedness patterns. We found that annual and all four seasonal waterbird compositions were nested, and selective extinction and habitat nestedness were the main factors governing nestedness. Further, selective colonization was the key driver of nestedness in autumn and winter waterbirds. We suggest that the area of wetland fragments should be as large as possible and that habitat heterogeneity should be maximized to fulfill the conservation needs of different seasonal waterbirds. Furthermore, we suggest that future studies should focus on the least area criterion and that vegetation management of artificial wetland construction should be based on the notion of sustainable development for humans and wildlife.

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“…The water environment has been polluted with heavy eutrophication and significant nitrogen, and the water resources have decreased. Based on these factors, the Qilihai Wetland national nature reserve should be managed by the appropriate administrative department within the provincial people’s government or under the State Council [ 39 ]. All units and individuals should be obligated to protect nature resources in Qilihai Wetland, and the government should have the right to report and prosecute any unit or individual that has destroyed or occupied the reserve.…”

Section: Methodsmentioning

confidence: 99%

Contrasting Eutrophication Risks and Countermeasures in Different Water Bodies: Assessments to Support Targeted Watershed Management

Chu

Zhang

et al. 2017

IJERPH

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Eutrophication is a major problem in China. To combat this issue, the country needs to establish water quality targets, monitoring systems, and intelligent watershed management. This study explores a new watershed management method. Water quality is first assessed using a single factor index method. Then, changes in total nitrogen/total phosphorus (TN/TP) are analyzed to determine the limiting factor. Next, the study compares the eutrophication status of two water function districts, using a comprehensive nutritional state index method and geographic information system (GIS) visualization. Finally, nutrient sources are qualitatively analyzed. Two functional water areas in Tianjin, China were selected and analyzed: Qilihai National Wetland Nature Reserve and Yuqiao Reservoir. The reservoir is a drinking water source. Results indicate that total nitrogen (TN) and total phosphorus (TP) pollution are the main factors driving eutrophication in the Qilihai Wetland and Yuqiao Reservoir. Phosphorus was the limiting factor in the Yuqiao Reservoir; nitrogen was the limiting factor in the Qilihai Wetland. Pollution in Qilihai Wetland is more serious than in Yuqiao Reservoir. The study found that external sources are the main source of pollution. These two functional water areas are vital for Tianjin; as such, the study proposes targeted management measures.

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Wetland restoration to enhance biodiversity in urban areas: a comparative analysis

Cited by 24 publications

References 0 publications

Developmental toxicity of treated municipal wastewater effluent on Bombina orientalis (Amphibia: Anura) embryos

Developmental toxicity of treated municipal wastewater effluent on Bombina orientalis (Amphibia: Anura) embryos

Nestedness theory suggests wetland fragments with large areas and macrophyte diversity benefit waterbirds

Contrasting Eutrophication Risks and Countermeasures in Different Water Bodies: Assessments to Support Targeted Watershed Management

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