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

Davison, Stephen P. and Thomas, Robert J. 2017. Apparent spring swarming beaviour 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: 23 Nov 2018 11:15

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