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Apparent spring swarming behaviour of Lesser Horseshoe Bats (Rhinolophus hipposideros)

Davison, Stephen P. and Thomas, Robert J. ORCID: 2017. Apparent spring swarming behaviour of Lesser Horseshoe Bats (Rhinolophus hipposideros). Journal of Bat Research and Conservation 10 (1) 10.14709/BarbJ.10.1.2017.03

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Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.

Item Type: Article
Status: Published
Schools: Biosciences
Publisher: Spanish Association for the Conservation and Research of Bats (SECEMU)
Date of First Compliant Deposit: 22 November 2018
Date of Acceptance: 10 August 2017
Last Modified: 03 May 2023 11:03

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