Abstract

There is increasing recognition of the importance for local biodiversity of post-mining sites, many of which lie near communities that have suffered significant social and economic deprivation as the result of mine closures. However, no studies to date have actively used the knowledge of local communities to relate the history and treatment of post-mining sites to their current ecological status. We report a study of two post-mining sites in the Yorkshire coalfield of the UK in which the local community were involved in developing site histories and assessing plant and invertebrate species composition. Site histories developed using participatory GIS revealed that the sites had a mixture of areas of spontaneous succession and technical reclamation, and identified that both planned management interventions and informal activities influenced habitat heterogeneity and ecological diversity. Two groups of informal activity were identified as being of particular importance. Firstly, there has been active protection by the community of flower-rich habitats of conservation value (e.g. calcareous grassland) and distinctive plant species (e.g. orchids) which has also provided important foraging resources for butterfly and bumblebee species. Secondly, disturbance by activities such as use of motorbikes, informal camping, and cutting of trees and shrubs for fuel, as well as planned management interventions such as spreading of brick rubble, has provided habitat for plant species of open waste ground and locally uncommon invertebrate species which require patches of bare ground. This study demonstrates the importance of informal, and often unrecorded, activities by the local community in providing diverse habitats and increased biodiversity within a post-mining site, and shows that active engagement with the local community and use of local knowledge can enhance ecological interpretation of such sites and provide a stronger basis for successful future management.

Highlights

  • Extraction of coal and other minerals often involves the dumping of spoil or the stripping of surface soil

  • The timeline generated from the Participatory GIS (PGIS) workshop at Upton is shown in Fig 1A, which divides information into specific activities and events that had impacts on site ecology

  • The importance of informal local knowledge to develop an understanding of the ecology and management of urban ecosystems has been demonstrated in a number of studies [e.g. 7, 8, 9], and our study confirms this in the context of post-mining sites

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Summary

Introduction

Extraction of coal and other minerals often involves the dumping of spoil or the stripping of surface soil. Unusual invertebrate communities can develop on such sites, and studies of invertebrate groups, including ants [3] and Lepidoptera [4], suggest that naturally re-vegetated brownfield sites can support a diverse set of species. Both post-mining management and habitat heterogeneity have been identified as major factors influencing the lepidopteran and plant communities of post-mining sites [5], but the ecological benefits of retaining open, nutrient-poor habitats during restoration of postmining sites have frequently been ignored [6]

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