The driving forces of wetland degradation in Bure and Wonberma Woredas, Upper Blue Nile basin, Ethiopia

Assefa, Workiyie Worie; Eneyew, Belachew Getnet; Wondie, Ayalew

doi:10.1007/s10661-022-10516-8

Cited by 14 publications

(8 citation statements)

References 87 publications

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“…We did not find the wetland or parts of the wetlands that were not totally affected by human intervention like some previous studies (Mereta et al, 2013;Melo et al, 2015). This is because close to 30% of the study wetlands were converted to cultivated lands in the last 35 years; nearly a hundred thousand livestock have freely set to graze in the study wetlands; their sizes have been shrunk as the result of gully expansion and deposition of bulky sediments; and the macrophytes have heavily harvested (Assefa et al, 2022). Thus, as some other studies (Lu et al, 2019;Liu et al, 2022) we selected seven reference sites where the wetland areas were less polluted, hydrologically less modified, non-cultivated and least deforested, which is equivalent to 35% of the total sample sites.…”

Section: Discussionmentioning

confidence: 51%

“…As reported by Batzer and Ruhí (2013), EPT taxa are dominant in streams. In this study, Plecoptera was absent may be due to the ecological disturbance of our study wetlands (Assefa et al, 2022). Thus, we selected EOT as one of six core metrics by replacing Plecoptera with Odonata in the EPT metrics (Ephemeroptera, Plecoptera and Trichoptera) similar to Mereta et al (2013) and Tampo et al (2020).…”

Section: Discussionmentioning

confidence: 99%

“…Other land use types (cultivated land and settlement) were measured at the landscape scale using Landsat satellite images. Detailed methodological information can be obtained from Assefa et al (2022).…”

Section: Site Selectionmentioning

confidence: 99%

“…Obtaining nondisturbed sites in our study wetlands, however, was very difficult. According to Assefa et al (2022), these study wetlands have been threatened by anthropogenic activities. Consequently, the least disturbed sampling sites were taken as reference sites.…”

Section: Selection Of Reference and Impaired Wetland Sitesmentioning

confidence: 99%

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Development of a multi-metric index based on macroinvertebrates for wetland ecosystem health assessment in predominantly agricultural landscapes, Upper Blue Nile basin, northwestern Ethiopia

Assefa

Eneyew

Wondie

2023

Front. Environ. Sci.

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Developing multi-metric indices (MMIs) as a tool for inland water ecosystem assessment has attracted the attention of the global scientific community. The number of studies, which developed macroinvertebrate-based multi-metric indices for wetlands, however, was very limited. Thus, more work is needed to refine and implement it depending on the ecological contexts of wetlands. On top of this, we developed multi-metric indices based on macroinvertebrate assemblages that could be used for the ecological health assessment of wetlands that are impacted by agricultural activities in North-western Ethiopia. About 20 sampling sites were established in four wetlands along the disturbance gradient to take water and macroinvertebrates samples. The reference sites, which were least disturbed by human intervention, were established for the construction of multi-metric indices. Six core metrics were selected for the development of the final multi-metric indices from fifty-six potential metrics of macroinvertebrate assemblages after passing through sensitivity and statistical tests. The findings demonstrated all reference sites had good or high ecological conditions. On the contrary, the ecological statuses of nearly 70% of the impaired sites were found to be in bad to poor conditions. A significant distinction between reference and impaired sites suggested our index ability to identify the gradient variation in the ecological condition of wetlands. A strong negative relationship of the multi-metric indices model with most of the physicochemical variables and all human disturbance factors also suggested the appropriateness of the developed index in informing the ecological status of wetlands. Thus, we believe that our multi-metric indices could be a useful biomonitoring tool for the assessment and monitoring of wetland ecological conditions in predominantly agricultural landscapes in the Upper Blue Nile basin and beyond.

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Section: Discussionmentioning

confidence: 51%

Section: Discussionmentioning

confidence: 99%

Section: Site Selectionmentioning

confidence: 99%

Section: Selection Of Reference and Impaired Wetland Sitesmentioning

confidence: 99%

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Development of a multi-metric index based on macroinvertebrates for wetland ecosystem health assessment in predominantly agricultural landscapes, Upper Blue Nile basin, northwestern Ethiopia

Assefa

Eneyew

Wondie

2023

Front. Environ. Sci.

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“…Se identificaron algunos procesos en las coberturas y los usos del suelo reportado en este periodo de análisis (Figura 7). El más frecuente es la expansión urbana (Assefa et al, 2022;Donalde et al, 2022;Vasárus y Lennert, 2022), expansión de pastizales (Jebiwott et al, 2021), en algunos casos se ha reportado una disminución (Gomes et al, 2019;Jebiwott et al, 2021), el incremento de los asentamientos humanos (Cissell et al, 2018), y la deforestación de los bosques (Dame et al, 2019;Koch et al, 2019;Shiferaw et al, 2019;Wellmann et al, 2020), matorrales (Farley et al, 2012), selvas y manglares (Roy y Datta, 2018). Se pudo identificar que estos cambios están relacionados directamente con la expansión urbana, la intensificación de la agricultura comercial (Esgalhado et al, 2021) y el desarrollo de infraestructura (Haller, 2014;Koch et al, 2019).…”

Section: Procesos Del Cambio De Cobertura Y Usos Del Terrenounclassified

El cambio de cobertura y uso del terreno desde el enfoque de la metodología mixta: una revisión de la literatura

Ramírez¹,

Granados²

2023

LATAM

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Este artículo ofrece un análisis de la literatura internacional producido entre el año 2012 y 2022 sobre el abordaje del Cambio de Cobertura y Uso del Terreno (CCUT), a través de una metodología mixta. El fenómeno involucra múltiples interacciones con los factores físicos, sociales, económicos, políticos y culturales. Por esta razón, se requiere comprender de manera integral las causas, efectos y procesos que inducen estos cambios a nivel local y regional. La metodología mixta ofrece una perspectiva de análisis integral que combina datos cuantitativos (teledetección) y cualitativos (percepción social). El objetivo de esta investigación fue la revisión de estudios científicos que utilizan la metodología mixta aplicada al CCUT, para conocer el estado actual del conocimiento sobre los enfoques teóricos, metodológicos, y tendencias en este campo de investigación. Se encontró una literatura limitada en revistas de acceso abierto que aborden la problemática con este enfoque, una diversidad del término “metodología mixta”, no existe información explícita del método en los artículos revisados. Se identificaron herramientas y técnicas más empleadas de la investigación cuantitativa y cualitativa, las estrategias, los alcances y limitaciones que se han reportado en los diversos estudios. Se destaca la capacidad del enfoque metodológico para obtener una comprensión integral de la problemática, debido a que proporciona una información más completa de las causas y los efectos que conducen al CCUT. También se identificó una limitación importante como establecer vínculos previos de confianza con los actores locales para que puedan colaborar en el diseño y ser parte fundamental de la investigación.

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Macroinvertebrate assemblages along a gradient of physicochemical characteristics in four riverine wetlands, Upper Blue Nile basin, Northwestern Ethiopia

Assefa

Eneyew

Wondie

2023

Environ Monit Assess

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The driving forces of wetland degradation in Bure and Wonberma Woredas, Upper Blue Nile basin, Ethiopia

Cited by 14 publications

References 87 publications

Development of a multi-metric index based on macroinvertebrates for wetland ecosystem health assessment in predominantly agricultural landscapes, Upper Blue Nile basin, northwestern Ethiopia

Development of a multi-metric index based on macroinvertebrates for wetland ecosystem health assessment in predominantly agricultural landscapes, Upper Blue Nile basin, northwestern Ethiopia

El cambio de cobertura y uso del terreno desde el enfoque de la metodología mixta: una revisión de la literatura

Macroinvertebrate assemblages along a gradient of physicochemical characteristics in four riverine wetlands, Upper Blue Nile basin, Northwestern Ethiopia

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