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  Karst, Heritage and Institutional Failure A critical assessment of environmental governance in the United Kingdom and internationally Author: Mike Buchanan (2026) Philosophical Introduction Beneath the ground on which civilisation builds its roads, industries, farms, monuments, and cities lies another world: concealed, connected, and older than any institution created to govern it. Karst systems are not empty spaces beneath the surface. They are living geological networks through which water moves, landscapes breathe, ecosystems persist, and human communities are sustained. Their apparent silence is not absence; it is continuity operating beyond ordinary human perception. Yet the subterranean world is being managed as though it were inert, divisible, and recoverable. We draw boundaries across aquifers, place permissions above recharge zones, illuminate caves for mass visitation, extract groundwater beyond natural renewal, and permit pollutants to enter systems whose pat...
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  IUCN (SA) KARST WORKING GROUP: A REVISIT TWENTY YEARS ON (2006–2026) PREFACE This paper revisits the origins, objectives and achievements of the IUCN South Africa Karst Working Group (KWG), established during 2003–2004 in response to growing concerns regarding the degradation of South Africa's karst landscapes and groundwater systems. Twenty years later, many of the concerns that prompted the establishment of the Working Group remain unresolved. Indeed, in several respects, the pressures on South Africa's karst aquifers have intensified as a consequence of acid mine drainage (AMD), deteriorating wastewater infrastructure, rapid urbanisation, industrial expansion and inappropriate land-use practices. This revisited account reflects on the history of the Working Group, reviews developments since 2006 and considers future directions for the conservation and management of South Africa's irreplaceable karst heritage. There is an undeniable sense of frustration in looking back ...
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  The Silent Killer: Untreated Wastewater and Acid Mine Drainage Contamination of Karst Systems - Mike Buchanan (2026) Abstract Karst aquifer systems represent one of the most critical freshwater resources on Earth, supplying drinking water to an estimated 20–25% of the global population (Ford & Williams, 2007). Due to their intrinsic hydrogeological characteristics, high permeability, conduit flow, and minimal natural filtration, karst systems are exceptionally vulnerable to contamination. This paper examines the compounded impacts of untreated wastewater discharge and acid mine drainage (AMD) on karst environments, with reference to documented cases in the United Kingdom and South Africa. The interaction between sewage effluent, mining-derived acidity and carbonate geology produces complex geochemical reactions that mobilize heavy metals, generate toxic gases and degrade aquifer integrity. The paper highlights hydrochemical processes, environmental consequences, policy fa...
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  Urban and Industrial Development on Soluble Karst Terrains: Mechanisms, Consequences, Monitoring, and Management Mike Buchanan 2026 Abstract Urbanisation and industrial development on carbonate and other soluble-rock terrains accelerate karstification and disrupt epikarstic environments. Concentrated runoff, altered loading, excavation, and sediment delivery intensify dissolution, enlarge conduits, produce new voids and sinkholes and cause rapid sedimentary occlusion of conduits that together reconfigure hydrologic regimes and degrade groundwater quality. This paper synthesizes mechanisms, observed consequences, monitoring indicators (including increased turbidity, TDS, conductivity, and faster dye-tracer velocities), and causative management measures. Development on karst-prone terrain should be discouraged; where unavoidable, rigorous pre-development assessment, watershed-scale drainage design preserving diffuse recharge, land-use restrictions and legal/financial stewards...
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  Managing Fire in Karst Landscapes: Geoethical Implications and Strategies for Sustainable Burn Practices Mike Buchanan - 2025 Abstract Karst landscapes, composed of soluble rocks such as limestone, gypsum, chalk and dolomite, represent fragile ecosystems that host unique subterranean biodiversity and critical freshwater reserves. These terrains are increasingly threatened by fire, driven by both natural and anthropogenic causes. Due to their thin soils, porous geology and complex hydrology, karst systems are exceptionally vulnerable to the cascading impacts of fire, including biodiversity loss, groundwater contamination, and geological alteration. This paper explores fire origins, current management practices, emergency response efficiency and risk management in karst landscapes. By adopting a geoethical framework, we analyse both the threats and opportunities posed by fire, with a particular focus on the integration of Indigenous knowledge, ecological monitoring and modern ...
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