Globally, water hyacinth is a known invasive species that predominantly threatens the pillars of sustainability. The cost of controlling these invasive plants is high and many Southern African countries are barely equipped for this liability as the process has to be performed over time. Despite this challenge, there is valuable resource recovery from water hyacinth which can be used to make financial and environmental returns. The visible differences between the control and utilisation methods lie in the definition, recognition, and matching of costs and benefits. Using a rapid appraisal of existing literature, which was analysed using meta-analysis, the current paper is an attempt to discuss the beneficial use of water hyacinth. It is argued in the paper that the economic feasibility of control methods which, on one hand, are used to calculate the economic value of water hyacinth, mainly relies on assumptions whose reliability and sustainability are questionable, thus implying limitations on using this kind of control methods. On the other hand, the costs and benefits of utilising water hyacinth can be quantifiable, making them susceptible to changes associated with time value and sensitivity analysis of possible fluctuations in cashflows. In the context of these annotations, other scholars have argued for the consideration of other utilisation alternatives, among which is included biogas which has been identified as the most viable option because of its potential in diversifying the energy mix, reducing greenhouse gas emissions, and contributing to improved water quality. Given these observations, this paper aims to contribute to policy and research discussions on the fiscal understandings of the material recovery from water hyacinth to promote the adoption of biogas technology. These views are discussed within the broader discourse of the sustainable development goals (SDGs).

The fast-growing pace of the world's population and the increasing pressure exerted on global life supporting natural systems due to amplified natural resource use and consumption coupled with the impacts of climate change necessitates the development of innovative technologies and comprehensive policy frameworks to address the looming crisis in the water, energy and food nexus. As the 30th driest country globally, South Africa has embarked on and enacted a pro-water-energy and food nexus policy which aims to create an understanding of the interdependencies of the three components and their influence on socio-economic growth and national development in the face of climate change-induced environmental changes. While these policies and programmes appear to have a sound theoretical basis, their implementation has been hindered by a number of structural and systemic challenges. Using methods inspired by the tradition of participatory research, this paper discusses the strengths and weaknesses of the water-energy-food policy framework in South Africa within the context of its implementation in order to achieve water, energy and food security. The findings of this paper revealed that while some level of progress has been attained to improve the livelihoods of the population using the nexus ecosystem, the broader goal of the concept has failed to materialise due to poor execution of the programme, which is exacerbated by lack of synergies, and establishment of collaborations and partnerships among the relevant actors mandated with the management of the three components and inadequate investment. This paper recommends a broader and coordinated approach to implementing the water-energy-food nexus programme with a broader objective of sustainable development goals (SDGs) framework.

Climate change is arguably one of the biggest challenges globally. In order for countries to meet the commitments of the Paris Agreement, climate investments need to be scaled up for adaptation and mitigation strategies. Green bonds are one of the most emerging climate finance mechanisms for large-scale climate projects and offer investment opportunities for many developing countries. Most developing countries are heavily reliant on climate funds which are insufficient. Hence, the urgent need to tap into emerging climate finances such as green bonds. Out of all the regions, Africa is expected to be the worst impacted by climate change and green bonds can contribute to the much needed climate finances. The growth of the green bond market has been observed in the economic hubs of the continent with countries such as Kenya, Nigeria and South Africa demonstrating huge potential in being active and contributing to the growth of the market. However, this paper recommends that for the green bond market to further expand in these countries and rest of the continent, there needs to be public–private partnerships fostered, integrated policies, political will as well as effective institutional frameworks.

The water sector in South Africa is faced with numerous challenges, among which include; increased flooding and prolonged droughts caused by increased climate variability, rapid population growth, unsustainable water demands and withdrawals by various water users, deficiencies in institutional management and infrastructural maintenance, lack of political will with accompanying high levels of corruption and steady deteriorations in all sub-sectors of the economy. Other significant challenges include provision of water in rural communities, water pollution especially from poorly operated wastewater treatments works, acid mine drainage, nutrients from agriculture, siltation of dams. A combination of these factors has led to high levels of water scarcity and an immense burden on the water supply. However, it must be noted that in 1994, South Africa (SA) embarked on developing numerous policies and strategies to address water challenges. While some levels of success have been achieved in terms of policy formulation, there is, however, a lack of comprehensive coordination and synergy that cut across the broad objectives of these policies in meeting environmental, social and economic targets and aspirations. Additionally, the implementation of the policies and programmes is stalled by structural, systemic and institutional factors, coupled with new challenges arising from climatic variabilities. Using a combination of qualitative and quantitative methods together with rapid appraisal of existing literature, we explore systemic and institutional factors impeding the implementation of policies and strategies designed to drive South Africa's water sector as envisaged within the National Development Plan of 2012. We argue that the water sector is faced with multifarious and interweaving challenges such as inadequate human capital, changes in climatic conditions, limited financial resources, infrastructural deficiencies largely linked to poor urban planning and rapid growth of informal settlements, rampant corruption and mismanagement, lack of stakeholders' involvement and compartmentalisation of institutions. This paper, therefore, recommends a community-based approach that enforces transparency and the participation of civil society, cross-sectoral cooperation and a broad range of stakeholders and decentralisation of policy implementation strategies.

Climate change is already a reality, and it is affecting the lives and livelihoods of many people globally. Many scientists argue that adaptation is, therefore, necessary to address the impact of climate change on life-supporting systems. Climate change adaptation, however, is a complex process that involves transformations implemented through governance at multiple levels. In this paper, the barriers to climate change adaptation in South Africa are presented and analysed. Semi-structured, in-depth interviews were conducted telephonically and online via Microsoft Teams with 13 government officials working at the Department of Forestry, Fisheries, and the Environment; the KwaZulu-Natal Department of Economic Development and Environmental Affairs; and the uMkhanyakude District Municipality. The findings suggest that the barriers to climate change adaptation in South Africa include inadequate financial resources, a lack of human capacity at the provincial and local levels, limited political will at the local level, limited understanding of climate change adaptation issues by communities, inadequate coordination across government levels and sectors, no legal mandate at the local level, no climate change unit at the district and local levels, a lack of knowledge by some staff members tasked with environmental duties at the local level, not enough climate change plans in place at the local level, and outdated information on climate change used in the IDPs. This paper, therefore, recommends that climate change be a standing item in the Integrated Development Plan for local governments, which will ensure that climate change is budgeted for appropriately. In addition, this paper suggests that a mandate for climate change adaptation be developed for all three government levels. There is also a need for the government to invest in capacity development and improve horizontal and vertical coordination to strengthen the weak climate governance capacity that exists.