Ecological Importance of Wetland Systems

Jisha, Kunnamkumarath; Puthur, Jos T.

doi:10.1002/9781119692621.ch3

Cited by 10 publications

(4 citation statements)

References 49 publications

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“…This is in line with Pattison-Williams et al [63], who argued that the retention of existing wetlands is an economically viable means to limiting the financial, social, and environmental damages of flooding. According to Jisha and Puthur [64], wetlands act like natural sponges that collect and store water from heavy rains and rapid snowmelts; they release water slowly, thereby reducing the damage from seasonal (and often catastrophic) floods. The study also found that few respondents rely on potable water from urban wetlands and instead use this for purposes such as car washing or irrigation; importantly, however, they also use wetlands for cultivation.…”

Section: Discussionmentioning

confidence: 99%

Wetland Resource Use and Conservation Attitudes of Rural vs. Urban Dwellers: A Comparative Analysis in Thohoyandou, Limpopo Province, South Africa

Sinthumule

Netshisaulu

2022

Water

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Although wetlands provide a variety of goods and services to people and ecosystems, they are the most threatened ecosystem in the world because they are easily degraded. Thus, efforts to protect the remaining wetlands are critical if this resource is to continue providing environmental, cultural, and economic goods and services. Central to the conservation and management of wetlands is understanding the attitudes of the people bordering wetlands. This study aimed to analyse wetland resource use and conservation attitudes of urban vs. rural dwellers of Thohoyandou, Limpopo Province, South Africa. Interview-administered questionnaires and observation were the methods used for data collection. Systematic random sampling was used to obtain a sample of 282 in urban and 312 households in rural areas. Descriptive statistics (frequencies, percentages) were used to summarize the data. Chi-square (χ2) tests were applied using Microsoft Excel (Microsoft Corporation, Redmond, Washington, WA, USA) in order to determine whether responses occurred with equal probability. Differences were considered to be significant at p ≤ 0.05. The study found that wetlands are more important in the lives and livelihoods of people in rural areas (92.9%) compared with urban areas (26.6%) of Thohoyandou. Human land use activities in wetlands (especially cultivation and infrastructural development) have degraded and destroyed wetlands—particularly those located in urban areas. The attitudes of respondents were generally positive both in urban and rural areas regarding the need for conservation and rehabilitation/restoration of wetlands. The study concluded that positive attitudes alone are insufficient to save and protect the wetlands. The responsible authorities should implement existing legislation to complement the positive attitudes of people and, importantly, they should work with communities towards the conservation of wetlands.

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Section: Discussionmentioning

confidence: 99%

Wetland Resource Use and Conservation Attitudes of Rural vs. Urban Dwellers: A Comparative Analysis in Thohoyandou, Limpopo Province, South Africa

Sinthumule

Netshisaulu

2022

Water

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“…The plants found in wetlands serve a critical role in the wetland ecosystem's food chain and energy flow. They provide a vital habitat for many populations, from bacteria to fish and birds (Arya & Syriac, 2018; Jisha & Puthur, 2021). These wetland plants are regarded as a biological indication of the wetland health.…”

Section: Introductionmentioning

confidence: 99%

Vegetation discrimination based on chlorophyll prediction in Marshy wetland using Unmanned Aerial Vehicles

Mohanty,

Pandey,

Singh

et al. 2024

Aquatic Conservation

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Wetlands are an integral part of our global ecosystems and play crucial roles in ecological functions such as carbon sequestration, flood mitigation, water purification, and recreational activities. The Ramsar Convention is the most significant wetland protection pact and is doing tremendous work in conserving wetlands worldwide. However, the wetlands area is still under threat due to anthropogenic activity. The current study utilized drone images, chlorophyll measurements and machine leaning to discriminate and map vegetation at marsh wetland area—the Ramsar site. The high‐resolution, multispectral imagery is acquired using a drone‐mounted MICAsense sensor. Eight spectral indices such as Normalized Difference Water Index (NDWI), Two‐Band Algorithm (2BDA), Normalized Difference Chlorophyll Index (NDCI), Normalized Difference Vegetation Index (NDVI) Enhanced Normalized Difference Vegetation Index (ENDVI), Green Normalized Difference Vegetation Index (GNDVI), and Normalised Difference RedEdge (NDRE) were calculated on the acquired imagery in order to discriminate the different vegetation covers such as floating aquatic vegetation (FAV), open water, and other vegetations types. These include the following: Eichhornia, Nymphea, Oleracea, Paspalam, and Oryza from agriculture land at the study site. Two models (viz., the Taylor plot and the Lek Profile methods) were employed to assess the sensitivity of the spectral indices for prediction of chlorophyll and vegetation discrimination. It is inferred from both methods that NDCI was most sensitive for chlorophyll prediction of vegetation followed by NGRDI/ ENDVI/ 2BDA and NDVI for chlorophyll prediction in wetland ecosystems. Further, three machine learning algorithms, support vector machine (SVM), random forest (RF), and gradient tree boost (GTB), were utilized for classification, and the performance accuracy of GTB was found to be the highest (0.893), followed by RF (0.851) and SVM (0.723). The GTB algorithm was applied over NDCI for vegetation discrimination. The study revealed that Eichhronia sp. is abundantly present at the study site; hence, strategic management plans should be carried out for the eradication of invasive species and proper management of wetland vegetation.

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“…Urban wetlands are ecosystems located within an urban radius where a wide variety of animal species can interact (Jisha & Puthur, 2021). However, in very few of these ecosystems, initiatives aimed at the identification, monitoring, and risk assessment against the presence of bacterial genera that are pathogenic or pose any potential risk to other animal species have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Identification of potentially harmful bacterial genera of veterinary relevance in the Llanquihue urban wetlands

Rocha,

Opitz,

Cárdenas

et al. 2024

Austral J Vet Sci

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Water bodies constitute natural, social, and ecological heritage under constant threat from the footprint of human action. They are the habitats of many species and play a key role in sustaining biodiversity in different ecosystems. However, anthropogenic activity can result in eutrophication of water bodies, favoring the excessive growth of microorganisms, which can be a risk factor for animal, human, and environmental health. The Agricultural and Livestock Service [Servicio Agrícola y Ganadero, (SAG)] of Chile developed a list of Mandatory Reportable Diseases (MRD) to report suspected contagious diseases of veterinary relevance. In this sense, the detection of microorganisms in water bodies for the characterization of their sanitary status is important for the development of monitoring strategies and the prevention of possible diseases. This study aimed to determine the presence of potentially harmful bacteria in Llanquihue urban wetlands. Here, we used metagenomic sequencing of amplicons to characterize the composition of microorganisms in three urban wetlands in the city of Llanquihue, which could be a risk factor for animal health. Our main finding was the detection of genera that may be associated with MRD, in addition to other microbial genera that have pathogenic potential. On the other hand, we also report the presence of cyanobacteria genera that can be involved in toxin production in water bodies as another potential source of risk. This is the first study to use massive sequencing techniques to analyze the sanitary status of urban wetlands in the city of Llanquihue.

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Ecological Importance of Wetland Systems

Cited by 10 publications

References 49 publications

Wetland Resource Use and Conservation Attitudes of Rural vs. Urban Dwellers: A Comparative Analysis in Thohoyandou, Limpopo Province, South Africa

Wetland Resource Use and Conservation Attitudes of Rural vs. Urban Dwellers: A Comparative Analysis in Thohoyandou, Limpopo Province, South Africa

Vegetation discrimination based on chlorophyll prediction in Marshy wetland using Unmanned Aerial Vehicles

Identification of potentially harmful bacterial genera of veterinary relevance in the Llanquihue urban wetlands

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