Improving management of shoreline and riparian wetland ecosystems: the case of Lake Tana catchment

Wondie, Ayalew

doi:10.2478/v10104-011-0017-4

Cited by 37 publications

(35 citation statements)

References 3 publications

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“…Direct human impacts such as landslides and erosion were found to have increased, resulting in the degradation of vegetation stock and condition, confirming the information obtained during FGD. These results are consistent with the findings of Wondie (2010), who reports intense socioeconomic activities and poor management practices as the main causes of degraded wetland ecological status in the Lake Tana region of Ethiopia. Iftekar and Takama (2008) provide a similar observation regarding the Nijhum Dwip Island of Bangladesh, where > 80% of the population perceived that the degraded condition of the mangrove wetland ecosystem was due to overexploitation.…”

Section: Lake Resource Sustainability Trendssupporting

confidence: 82%

Sustainable livelihoods through conservation of wetland resources: a case of economic benefits from Ghodaghodi Lake, western Nepal

Lamsal¹,

Pant²,

Kumar³

et al. 2015

E&S

103

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ABSTRACT. We investigated the participation of local ethnic groups in wetland conservation, determined the economic benefits that they received from the wetlands, and assessed socioeconomic factors that affect dependency on wetlands. A total of 217 wetland resource-user households residing around Ghodaghodi Lake, western Nepal were surveyed. Data were analyzed using descriptive statistics, t-tests and ordinary least squares regressions. The wetland resources contributed significantly to the household economy of the local people. Each household extracted lake resources at an annual worth of NPR 4379 ($63 USD), equivalent to 12.4% of the household total gross income. Although the people maintained a positive attitude toward wetland conservation, their participation in conservation efforts was inadequate. Socioeconomic factors such as larger household size, older age of the head of the family, and larger area of agricultural land increased the rate of resource extraction. In contrast, when households were involved with local conservation organizations, resource extraction was reduced. We recommend the following resource conservation and livelihood strategies: implementation of community-based conservation approaches to increase system productivity, adoption of biogas plants, and improved cooking stoves to reduce fuelwood consumption, coupled with conservation awareness programs.

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Section: Lake Resource Sustainability Trendssupporting

confidence: 82%

Sustainable livelihoods through conservation of wetland resources: a case of economic benefits from Ghodaghodi Lake, western Nepal

Lamsal¹,

Pant²,

Kumar³

et al. 2015

E&S

103

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“…The three genera are: Enteromius (three species) [3], Garra (four species) [4] and Labeobarbus (17 species) [5,6]. Of the 27 fish species in the lake, 21 are endemic [1] and 17 (76%) of the endemic species belong to the genus Labeobarbus, The wide range of different habitats in the geologically young lake [7], in combination with the 40 m high Tissisat We reviewed various sources of DPSIR-related literature [18,21,22,[25][26][27][28] to define the following five elements of the framework: (1) driving forces are identified as general human needs responsible for pressures on the ecosystem, (2) pressures are the actual human activities that affect the lake ecosystem, (3) state changes describe the condition of the lake ecosystem components affected by pressures, (4) impacts are human health risks or socio-economic losses, and (5) responses are the feedback to driving forces, pressures, state changes and impacts. A first step consists of identifying the major driving forces, pressures, state changes and impacts in the lake catchment.…”

Section: Introductionmentioning

confidence: 99%

A Drivers-Pressure-State-Impact-Responses Framework to Support the Sustainability of Fish and Fisheries in Lake Tana, Ethiopia

et al. 2018

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Lake Tana, Ethiopia's largest lake, has a remarkable and conservation-worthy assemblage of fish species, requiring fisheries management for sustainable exploitation. However, due to anthropogenic impacts, many of these fish species are threatened. Hence, an improved management of these resources is recommended. To allow a more sustainable exploitation of natural resources, a better understanding of the cause-effect relationships between anthropogenic impacts and environmental components is fundamental. The Drivers-Pressure-State-Impact-Responses (DPSIR) framework is a useful tool to describe these links in a meaningful way to managers and policy makers. Despite its potential, application of DPSIR is virtually lacking in developing countries. This paper assessed the potential of the DPSIR framework and used it to comprehensively describe the available knowledge and management needs in the lake catchment. Rapid population growth and the economic transformation are the main driving forces leading to various pressures such as water quality and wetlands degradation as well as declining fish community, which is detrimental to the socio-economic state and health of the local inhabitants. As feedback to the driving forces, pressures, state changes and impacts, optimal multi-level responses are developed. This study aims at providing policy makers a better understanding of the lake catchment in order to bridge the gap between science and decision-making.

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“…The rapid loss of vegetative cover and land use change, due to recent agricultural intensification, is a major driver of recent increases in sedimentation and biodiversity degradation in the lake [7] [8]. The degradation of water quality has reduced the lake's capability to support aquatic life, and thus, impacts the sustainable utilization of the lake water resources.…”

Section: Introductionmentioning

confidence: 99%

Water Quality Assessment by Measuring and Using Landsat 7 ETM+ Images for the Current and Previous Trend Perspective: Lake Tana Ethiopia

Moges¹,

Schmitter²,

Tilahun³

et al. 2017

JWARP

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Recently there are signs of water quality impairment in Lake Tana, the largest fresh water in Ethiopia. The lake is the growth corridor of the government and supports millions of livelihood around. In order to sustain the benefit and maintain the ecosystem of the lake, the lake health has to be kept safe. Therefore monitoring and evaluation of the water quality of lake is very vital. This study focuses on current and previous trends water quality of the lake through measurements and Landsat Images near entry of Gumera River. Statistical analysis of the physical (Turbidity and STD and biological (Cha-a,) and chemical (DPC) water quality parameters were done. Linear and non-linear regression models between water quality parameter and reflectance of Landsat 7 ETM+ images were fitted based on band combinations. Pervious trend in turbidity was analyzed based on the regression models. The results showed that reflectance and turbidity satisfactorily result with an R 2 ranging from 0.61 -0.68. Form 1999-2014 the turbidity of the lake has indicated an increasing trend. Delta development near the entry of Gumera River has been enlarged by 48% because of an increase sediment inflow. The sign in the decreasing water quality of the lake was attributed to the non-point source sediment and nutrient inflow to the lake with high erosion rate from the watersheds. Measures to reduce the non-point source sediment and nutrient inflow by targeting the source areas (hot spots) in the agricultural watersheds need to be priority for stakeholders working on the soil and water conservation. Moreover, reducing the recession agriculture around the lake and wetland management could be crucial for improving lake water quality.

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Improving management of shoreline and riparian wetland ecosystems: the case of Lake Tana catchment

Cited by 37 publications

References 3 publications

Sustainable livelihoods through conservation of wetland resources: a case of economic benefits from Ghodaghodi Lake, western Nepal

Sustainable livelihoods through conservation of wetland resources: a case of economic benefits from Ghodaghodi Lake, western Nepal

A Drivers-Pressure-State-Impact-Responses Framework to Support the Sustainability of Fish and Fisheries in Lake Tana, Ethiopia

Water Quality Assessment by Measuring and Using Landsat 7 ETM+ Images for the Current and Previous Trend Perspective: Lake Tana Ethiopia

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