Dataset 570

UK Environmental Change Network (ECN) carabid beetle data: 1992-2015

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Realm: Terrestrial
Climate: Temperate
Biome: Multiple
Central latitude: 53.381732
Central longitude: -2.582388
Duration: 24 years, from 1992 to 2015

91367 records

158 distinct species

Across the time series Abax parallelepipedus is the most frequently occurring species

Methods

The method will, in general, conform with that developed by Dr M.L. Luff of the University of Newcastle upon Tyne. At each site, in or adjacent to the TSS, a pitfall trapping system should be instituted to sample Carabidae (ground beetles) and the ubiquitous opilionid (Harvestmen) Mitopus morio. Adult crane- flies caught in the traps should also be retained in order to check their identification against the larvae extracted in soil cores (see separate Protocol for Tipulidae). It will be necessary to measure the length of the second femur of M. morio; this changes with altitude and latitude and may react to environmental change. All carabid beetles (not just Carabus spp.) are of interest. Equipment The pitfall traps are polypropylene cups, 7.5 cm diameter x 10 cm deep (see Appendix I for supplier). A wire netting cage, made from chicken wire with a mesh size approximately 15 mm x 20 mm and approximately 70 mm high, is clipped to the rim of each trap so as to reduce the number of small mammals inadvertently caught in the traps. Each trap should have a cover which can be made cheaply from 5" diameter plant pot saucers and galvanised wire. This helps to prevent heavy rain from flooding the traps, keeps birds from interfering, and helps in their re-location. Location Three transects should be selected, preferably within different vegetation types and including the TSS. Transects should not be placed where cattle have access. Ten pitfall traps should be established in each transect, with 10 m spacing between the traps. If possible, transects should be approached from different directions when attending to traps so as to avoid trampling damage to the vegetation. If trampling is having an obviously deleterious long-term effect on the vegetation, a trapline can be moved each year but returned to the original position every three years. Any movement of traplines should be recorded and information sent to the Central Co-ordination Unit. Sampling The traps are set out on the first Wednesday in May and are then emptied and replaced fortnightly for 13 sampling periods, until the end of October. Blue antifreeze is used as preservative;

Citation(s)

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