Assessing the environmental sustainability of cultivation systems in wetlands using the WET-Health framework in Zimbabwe

Marambanyika, Thomas; Beckedahl, Heinz; Ngetar, Njoya Silas; Dube, Timothy

doi:10.1080/02723646.2016.1251751

Cited by 17 publications

(12 citation statements)

References 22 publications

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“…Knowledge on wetland conditions in Zimbabwe as described by Marambanyika et al. (2016) is built on a partial view of reality and has hindered effective wetland management. Although EO data in wetland assessment and monitoring prove to be an effective tool, access to remote sensed data in Zimbabwe is limited.…”

Section: Resultsmentioning

confidence: 99%

“…Choice of EO data used is largely dependent on costs of EO data although there is a wide range of satellite images available ranging from low resolution to high resolution. Types of satellite images used in wetland assessment and monitoring in Zimbabwe are mainly Landsat (Chikodzi & Mapfaka, 2018; Dube et al., 2017; Masocha, Dube, Makore, et al., 2018; Masocha, Dube, Nhiwatiwa, et al., 2018), Medium Resolution Imaging Spectroradiometer (MODIS; Shoko et al., 2015), Satellite PourI'Observation de la Terre (SPOT; Chikodzi & Mufori, 2018; Mhlanga et al., 2014), RapidEye (Marambanyika & Beckedahl, 2016b; Marambanyika et al., 2016) and aerial photography (Marambanyika & Beckedahl, 2016b; Marambanyika et al., 2016; Mutisi, 2014; Sibanda, 2018). Landsat images constitute 62.9% of satellite images used, MODIS (14.3%), RapidEye (5.7%), SPOT (5.7%) and aerial photography (11.4%) of images used in wetland assessment and monitoring in Zimbabwe (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

“…These institutions include, for example, Lupane State University (Ndlovu & Manjeru, 2014), Midlands State University (Marambanyika & Beckedahl, 2016b), University of Zimbabwe (Masocha et al., 2017), among other local universities. In addition to funding research work done by local universities in Zimbabwe, NGOs are responsible for supporting wetland cultivation under food security and poverty eradication programmes (Marambanyika et al., 2016).…”

Section: Resultsmentioning

confidence: 99%

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Trends in use of remotely sensed data in wetlands assessment and monitoring in Zimbabwe

Ngwenya

Marambanyika

2021

Afr J Ecol

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The paper assesses trends in use of earth observation data in wetland conditions monitoring and assessment in Zimbabwe from 1980 to 2019. Reviewed literature shows academia and research institutions (69.8%), government agencies (14%) and international development partners (16.3%) as the main users of remotely sensed data in wetland ecological assessments and monitoring. There is more reliance by the abovementioned stakeholders on freely available low‐cost resolution imagery from Landsat (62.9%) and Moderate Resolution Imaging Spectroradiometer (14.3%). Other stakeholders, however, are reliant on high‐resolution imagery like Rapid Eye (5.7%) and aerial photography (11.4%). Satellite images in wetland management in Zimbabwe are used for land use land cover change detection (42.1%), vegetation health monitoring (21.1%), water quantity monitoring (5.3%), water quality monitoring (13.2%) and wetland mapping (18.4%). The identified challenges faced by different stakeholders to effectively utilise EO data include high cost of high‐resolution imageries, limited expertise, inadequate equipment and software. Since the cost of high‐resolution satellite imagery mainly constraints the acquisition of suitable satellite data to assess the small wetlands that dominate Zimbabwe's landscape, there is need to promote use of recently launched freely available high‐resolution Sentinel data to improve the ecological assessment of wetland conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Trends in use of remotely sensed data in wetlands assessment and monitoring in Zimbabwe

Ngwenya

Marambanyika

2021

Afr J Ecol

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“…Land cover was mapped using satellite imagery and local climate and slope data were collected from public sources. The results showed that the cultivation techniques used disrupted wetland hydrology, and were therefore unsustainable [50]. In Iran, human impacts on soil erosion have been shown to not just depend on the type and level of human activity, but also on physico-chemical properties of the soil.…”

Section: Agriculturementioning

confidence: 85%

The Contribution of Physical Geographers to Sustainability Research

Day

2017

Sustainability

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Abstract:A physical geographers' scope of practice is not defined by any regulatory or academic organization, so perception of the potential contribution of physical geography to sustainability research has been nebulous or informal, at best. In order to understand what physical geographers can do to enhance sustainability, this paper describes a systematic review of peer-reviewed research on sustainability published in three physical geography journals. The results show that physical geographers are active in sustainability research in terms of a spatial perspective, an understanding of human interactions with the environment, and an ability to recognize, interpret, and project environmental change and its impacts. The depth of this understanding is facilitated by a physical geographers' understanding of the natural world, process and system concepts, the ways that systems are linked and interact, and a willingness to deploy a wide range of methodologies to secure that knowledge. The expertise of physical geographers makes an important contribution to sustainability research and should be considered when multidisciplinary teams are assembled.

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“…About 60% of wetlands are found in communal and resettlement areas [1], and are predominantly used for cultivation and livestock grazing [4]. Several researches in Zimbabwe have been focusing on communal and resettlement areas to understand the impact of the aforementioned agricultural practices on various wetland ecosystem components such as vegetation, hydrology, geomorphology, soils and water quality [5,6].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Drivers of Wetland Changes in Areas Associated with Wildlife-Based Tourism Activities in Zimbabwe

Marambanyika¹,

Sibanda²

2019

Wetlands Management - Assessing Risk and Sustainable Solutions

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The study assesses wetland land cover changes associated with high wildlife densities and tourism activities in Dete vlei, located in Sikumi protected forest, adjacent to Hwange National Park, Zimbabwe. The vlei is used for photographic safaris and is associated with high number of tourists visiting the wetland to see a variety of wildlife species congregated in it. On-screen digitization and analysis of SPOT images for the period of 1984-2013 was used to determine land cover changes in the wetland. Field data were collected through observations, measurements and semi-structured interviews with key informants. The results of the study showed that the spatial extent of bare areas increased in the lower section of the vlei after the establishment of salt licks and watering points meant to attract many wild animals during the dry season. In contrast, wetland conditions have been expanding in the upper section of the wetland without artificial salt licks and watering points. Tourists' footpaths, road culverts, unplanned vehicles' roads, to mention a few, contribute to erosional features evident in the wetland. The study recommends the introduction of wildlife-based tourism management strategies in seasonal wetlands to minimise degradation and possibly loss of wetlands.

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Assessing the environmental sustainability of cultivation systems in wetlands using the WET-Health framework in Zimbabwe

Cited by 17 publications

References 22 publications

Trends in use of remotely sensed data in wetlands assessment and monitoring in Zimbabwe

Trends in use of remotely sensed data in wetlands assessment and monitoring in Zimbabwe

The Contribution of Physical Geographers to Sustainability Research

Assessing the Drivers of Wetland Changes in Areas Associated with Wildlife-Based Tourism Activities in Zimbabwe

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