Review: Assessment of climate change impacts on groundwater-dependent ecosystems in transboundary aquifer settings with reference to the Tuli-Karoo transboundary aquifer

Majola, Kwazikwakhe; Xu, Yongxin

doi:10.1016/j.ecohyd.2021.08.013

Cited by 7 publications

(3 citation statements)

References 83 publications

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“…For instance, in Tanzania and Kenya, a key carbon sink, biomass has been reduced by 76% (Wilson et al, 2021). Tuli-Karoo transboundary aquifer in Southern Africa has been studied to understand the interaction between groundwater ecosystems and climate change (Majola et al, 2021). Furthermore, a considerable amount of mitigation research focuses on carbon sequestration (Adetoye et al, 2018;Gonzalez-Sanchez et al, 2019), soil organic carbon (Vågen et al, 2005;Swanepoel et al, 2016), REDD, and REDD+ (Rahlao et al, 2012;Soliev et al, 2021).…”

Section: The Forestry and Sequestration Cluster (Green)mentioning

confidence: 99%

An overview of climate change adaptation and mitigation research in Africa

et al. 2022

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Research on climate change has increased significantly since the 1970s. There has also been a particular focus on Africa, given its vulnerability to climate change impacts and its urbanization trends that may have massive implications for climate change adaptation and mitigation. Despite the wealth of publications on climate change in Africa, there is a lack of review studies that highlight the overall research landscape. If this status of climate research is clarified, African countries can better deal with climate change. Hence, this paper aims to improve our understanding of the status and trends of research on climate change adaptation and mitigation in Africa. Our review, straddling from 1990 to late 2021, recognizes the foundations that underpin climate change adaptation and mitigation literature. Based on keywords associated with Africa's climate change adaptation and mitigation, we undertook bibliometric research by collecting 3,316 related SCI/SSCI articles. In addition, we provided a thematic evolution over three decades, compartmentalized into four sub-periods (1990–2007; 2008–2014; 2015–2019; 2020–2021). Priority research topics and themes have been dynamic over time, with some core concepts receiving more attention (vulnerability, food, water, and energy security). Although the number of published articles exhibited a rapidly growing trend, their distribution is extremely uneven. Articles were mainly published by institutions from certain parts of the continent, with the University of Cape Town, making the highest contribution. About 72% of the existing studies focused on climate change adaptation, while climate change mitigation was less represented with 22%. The results also showed that researchers have examined not all African countries. South Africa, Ethiopia, and Ghana are hot spots, while most countries are largely neglected. Africa and African countries need to improve their future research ability on climate change mitigation. Assessing climate change risks and measures in African countries should be prioritized.

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Section: The Forestry and Sequestration Cluster (Green)mentioning

confidence: 99%

An overview of climate change adaptation and mitigation research in Africa

et al. 2022

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“…In recent years, there has been a great deal of research on the impact of climate change on water resources, with results indicating the undeniable impact of climate change on water resources and the effect of selecting a climate model and emission scenario on research outcomes (Epting et al, 2021;Costa et al, 2021;Nyembo et al, 2022). Most models have estimated a reduction in groundwater reserves, especially in arid and semi-arid regions, due to decreased precipitation and increased temperatures (Shamir et al, 2021;Amanambu et al, 2020;Majola et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Integrated operation of water resources in climate change conditions, considering uncertainty based on coupled dynamic models of surface water and groundwater

Azizi,

Azari,

Bansouleh

2024

Preprint

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In regions with arid and semi-arid climates, groundwater serves as one of the main sources of agricultural, industrial, and drinking water supply, constantly interacting with surface waters. The purpose of this study is to investigate changes in the level and volume of aquifer storage in Kermanshah by simulating the interaction of surface and groundwaters, using a coupling dynamic model WEAP-MODFLOW. This model is capable of calling and automatically running climate change scenarios and displaying their effects on the entire system. In this method, data and results between the MODFLOW and WEAP models are exchanged on a monthly basis, and the impacts of implementing each of the CMIP5 climate scenarios can be observed in both surface water and groundwater sections. The values of recharge, extraction, runoff, river levels, and water supply from the WEAP model are input into the MODFLOW model to calculate groundwater levels and changes in aquifer storage, with results fed back to the WEAP model. To apply model uncertainties and climate scenarios was developed a hybrid model based on the combination of predictions from 5 different AR5 models. The results showed that over a base period of 27 years (October 1991 to September 2018), the average groundwater level at the end of the period decreased by 4.3 meters, with a reservoir volume reduction of 253 million cubic meters. In the event of aquifer operation, based on the predicted climatic parameters derived from the hybrid model during the 81 years (October 2018 to September 2099), the level of reduction and volume of aquifer storage was predicted under the optimistic scenario of RCP2.6 in order of 2.52m and 251.51MCM and the pessimistic scenario RCP8.5, respectively 8.88m and 769.04 MCM. The results demonstrated that employing an integrated operation model in a dynamic link mode is an effective strategy for better river and aquifer management under climate change conditions. The effects of each climate scenario on the entire system are observable in this model, aiding decision-makers in implementing effective adaptation strategies to climate change.

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“…Governments have funded research on groundwater and ecology, leading to a sharp increase in the number of published articles in this field globally. At present, international studies mainly focus on (1) the action of microorganisms (Flynn et al 2008;Maamar et al 2015;Beganskas et al 2018;Fillinger et al 2021;Griebler et al 2022); (2) groundwater-surface water interaction in the hyporheic zone (Sophocleous, 2002;Hayashi and Rosenberry, 2002;Kalbus et al 2006;Conant et al 2019); (3) biodiversity (Griebler and Lueders, 2009;Danielopol et al 2000;Boulton et al 2008); (4) the response of groundwater and ecosystem in changing environments (Dams, 2012;Crosbie et al 2013;Bussi et al 2018;Epting et al 2022); (5) groundwater resource evaluation based on ecological consideration and (6) groundwater-dependent ecosystem (Griebler et al 2010;Korbel and Hose, 2011;Bertrand et al 2012;Glanville et al 2016;Voisin et al 2020;Majola et al 2022). In China, research in this field mainly focus on solving practical problem, including (1) regional water cycle evolution (Huan et al 2011;Zhu et al 2014;Yin et al 2021;Chen et al 2022); (2) surface watergroundwater environment interaction (Wu et al 2005;Wang et al 2007;Ling et al 2011;Ma et al 2013;Zhu et al 2017); (3) groundwater ecological effects (Ma et al 2002;Xu et al 2016;Wang et al 2018;…”

Section: Introductionmentioning

confidence: 99%

Research hotspots and trends of groundwater and ecology studies: Based on a bibliometric approach

Li¹,

Yao²,

Zhang³

et al. 2023

Journal of Groundwater Science and Engineering

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Groundwater, as a critical component of the hydrological cycle, is essential for sustainable ecosystem development. To clarify the current status of domestic and overseas research, and to identify hotspots, frontier and future trends of groundwater and ecology research, this study utilizes bibliometric methods and CiteSpace software to examine relevant published articles in the Web of Science (WOS) and CNKI databases from 1978 to 2022. Specifically, this study analyzes (1) the annual number of published papers;(2) research institutions; (3) keywords; and (4) evolution of research hotspots. The findings reveal that the United States, China, and Germany are the top three countries in groundwater and ecology research. International research hotspots mainly focus on microbial ecology, climate change, groundwater-surface water interactions in the hyporheic zone, biodiversity, and submarine groundwater discharge, while domestic research hotspots mainly focus on ecological water conveyance, ecological flow, groundwater development and utilization, groundwater pollution, and groundwater and ecological protection. Both domestic and international research hotspots exhibit interdisciplinary features with diverse research objects and assessment methods. Future research in this area is expected to focus on topics such as contamination, groundwater quality, framework, mechanism, spatial distribution, and dissolved organic matter. Additionally, the study of ecological recharge, ecological flow, ecological protection, water intake and use will continue to be the hot topics domestically.

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Review: Assessment of climate change impacts on groundwater-dependent ecosystems in transboundary aquifer settings with reference to the Tuli-Karoo transboundary aquifer

Cited by 7 publications

References 83 publications

An overview of climate change adaptation and mitigation research in Africa

An overview of climate change adaptation and mitigation research in Africa

Integrated operation of water resources in climate change conditions, considering uncertainty based on coupled dynamic models of surface water and groundwater

Research hotspots and trends of groundwater and ecology studies: Based on a bibliometric approach

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