Changes in earthworm populations following cultivation of undisturbed and former opencast coal-mining land |
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| Authors: | J Scullion A R A Mohammed G A Ramshaw |
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| Institution: | 1. University College of Wales Field Laboratory, 23 Plasgwyn Road, Penygroes, Llanelli, Dyfed SA14 7RY, Gt. Britain;2. Cleanacres Ltd., Andoversford, Cheltenham, Gloucestershire GL54 4LZ, Gt. Britain;1. Université Clermont Auvergne, CNRS, SIGMA Clermont, ICCF, F-63000 Clermont-Ferrand, France;2. Sorbonne Université, CNRS, Plateforme de criblage KISSf (Kinase Inhibitor Specialized Screening facility), Protein Phosphorylation and Human Diseases Unit, Station Biologique, Place Georges Teissier, F-29688 Roscoff, France;1. Department of Environmental Science, Tezpur University, Assam 784028, India;2. Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea;1. Sorbonne Université, UPEC, CNRS, IRD, INRAE, Institut d’écologie et des sciences de l’environnement, IESS, 93143 Bondy, France;2. Soils and Fertilizers Research Institute (SFRI), Dong Ngac, Tu Liem, Hanoi, Viet Nam;3. INRAE, UMR 1222 Eco & Sols, 2 place Viala, 34070 Montpellier Cedex, France;4. INRAE, UMR 1114 EMMAH, INRAE/Université d’Avignon, Domaine Saint Paul, 84914 Avignon Cedex 09, France |
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| Abstract: | Earthworm response to a single cultivation sequence was assessed. Cropping and management of cultivated land was similar to that of non-cultivated areas. Effects were measured in a trial on recently replaced opencast mining land. A subsequent survey investigated responses to cultivation on both replaced and undisturbed land at periods since cultivation ranging from 1.5 to 7.5 years.On undisturbed land, adverse effects of cultivation, if any, were short-lived, with numbers of all species, but particularly deep-burrowing species, having recovered or increased after 3 years. However, on replaced land the initial adverse effect appeared to be larger, and recovery from this effect was delayed until at least 5 years after tillage. Different species present (Lumbricus terrestris/ Aporrectodea longa, Lumbricus rubellus/festivus, Aporrectodea caliginosa/Octalasion tyrtaeum and Allolobophora chlorotica) also varied in the extent of the initial reduction and in their rate of recovery. Reasons for different responses to cultivation and implications for the management of replaced land are considered. |
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