https://hdl.handle.net/2072/358929 2026-04-07T14:19:36Z https://hdl.handle.net/2072/537679 Chromatic restoration of a beech marten taxidermy specimen to resemble its original population: analysing painting products and colour parameters Vila i Casòliva, Maria; Artola-Pino, Marta; Quesada, Javier Natural history collections preserve invaluable taxidermy specimens, which are prone to lightinduced degradation, compromising their historical and educational significance. Restoration of these specimens to their original appearance through chromatic reintegration is imperative. The principle of reversibility mandates interventions that are modifiable or reversible without harming the original work, thereby preserving authenticity and enabling future conservation efforts. This study aims to identify the most suitable product for chromatic reintegration of a mammal taxidermy specimen, evaluate its fidelity to the original population, and assess its imperceptibility to the general public during exhibitions. Various products underwent rigorous evaluation for colouration, drying time, coverage, reversibility, safety, and resistance to light degradation. Accelerated aging tests using the Xenotest were conducted to simulate long-term light exposure. A beech marten taxidermy specimen was restored with the chosen dye, and its colour was compared against skins from the original population of the species. Public perception tests were conducted to gauge the ability of people to detect the chromatic restoration during exhibitions. Orasol® dye emerged as the optimal choice for chromatic reintegration, meeting criteria for colouration, reversibility, coverage, and resistance to light degradation. Despite its toxicity for aquatic organisms, it demonstrated promising results. Most colour measurements closely matched the original beech marten population, with minor hue deviations. Public perception tests confirmed the imperceptibility of the chromatic restoration, indicating its suitability for exhibition and educational purposes. This study highlights the importance of authenticity and imperceptibility in restoration processes, emphasizing the need for meticulous consideration of budget constraints in museum settings. 2024-06-15T00:00:00Z https://hdl.handle.net/2072/537067 The showcase of salt rocks from Cardona in the Barcelona Natural Sciences Museum: conservation and adaptation for passive climate control Pérez-Azcárate, Marta; Garcia-Franquesa, Eulàlia; Fernández-Lluch, David; Duque-Valero, Susana; Aromí Folch, Joan Ramon; Casalod, Assumpció; Rodríguez-Ferrer, Andrea; Campeny, Marc Se presentan los resultados de la restauración de un conjunto expositivo datado a principios del s. XX, compuesto por una vitrina de madera y una veintena de rocas evaporíticas pertenecientes a las colecciones del Museo de Ciencias Naturales de Barcelona (España). Los objetivos de la intervención se centraron en el tratamiento directo de la obra y en la recuperación y mejora de su sistema de control ambiental original, aplicando criterios de sostenibilidad. Para llevar a cabo esta tarea, un equipo interdisciplinar trabajó en las diferentes fases de ejecución, que incluyeron estudios históricos y medioambientales previos. El tratamiento directo de las piezas logró mejorar la legibilidad del conjunto, mientras que el seguimiento de las condiciones ambientales de la nueva instalación, confirma la eficiencia del sistema de control ambiental pasivo propuesto.; The results of the conservation work carried out on an exhibition set-up dating from the early twentieth century are presented. The exhibition set-up consists of a wooden showcase containing about twenty evaporite rocks from the collection of the Museu de Ciències Naturals de Barcelona (Spain). The work involved the remedial conservation of the rock specimens and showcase, and the improvement of the original environmental control system using sustainability criteria. An interdisciplinary team worked on the different phases of the project, which included prior historical and environmental studies. The remedial conservation of all elements in the collection has improved its accessibility and the monitoring of the environmental conditions of the new installation has confirmed the efficiency of the proposed passive environmental control system.; Apresentam-se os resultados do restauro de um conjunto expositivo datado do início do século XX, constituído por uma vitrina de madeira e cerca de vinte rochas evaporíticas pertencentes às coleções do Museu de Ciências Naturais de Barcelona (Espanha). Os objetivos da intervenção centraram-se no tratamento direto da obra e na recuperação e melhoria do seu sistema de controlo ambiental original, aplicando critérios de sustentabilidade. Para levar a cabo esta tarefa, uma equipa interdisciplinar trabalhou nas diferentes fases de execução, que incluíram estudos históricos e ambientais prévios. O tratamento direto das peças conseguiu melhorar a legibilidade do conjunto, enquanto o acompanhamento das condições ambientais da nova instalação confirma a eficácia do sistema de controlo ambiental passivo proposto. 2023-11-03T00:00:00Z https://hdl.handle.net/2072/533374 Assessing environmental acidity in storerooms of Natural History collections Pérez-Azcárate, Marta; Caballero-López, Berta; Uribe, Francesc; Ibáñez Cortina, Neus; Masó, Glòria; Garcia-Franquesa, Eulàlia; Carrillo-Ortiz, José; Agua, Fernando; García-Heras, Manuel; Villegas, María-Angeles Outdoor and indoor pollutants can affect the conservation of natural history collections. As a first approach to this question, environmental acidity around specimens in the collections of the Natural Science Museum of Barcelona and Botanic Institute of Barcelona (MCNBIBB) was measured. Measurements were taken using optical sensors in a number of different places: inside and outside buildings, in storerooms, on store cases and cabinets and in containers in three collections. All acidity measurements fell within a pH range of 6.5–7.7, which suggests that the collections tested were not exposed to a dangerous acidic environment during the measurement period. Despite its outdated facilities, the Museum’s buildings and storerooms act as effective barriers against acid pollutants entering from the outside. The type of storage facilities and containers employed seems to have little impact but is still nevertheless of some relevance. Optical sensors are excellent tools for disentangling the complex spatio-temporal environments in which the MCNB-IBB collections are housed. Larger samples will be necessary if a more complete analysis is to be undertaken. 2021-03-08T00:00:00Z https://hdl.handle.net/2072/361065 Restauració d'una Balaenoptera physalus: la balena emblemàtica del Museu de Ciències Naturals de Barcelona = Restauración de una Balaenoptera physalus: la ballena emblemática del Museu de Ciències Naturals de Barcelona Val, Sandra; Garcia-Franquesa, Eulàlia; Pérez-Azcárate, Marta; Valls, Marta; Cancelo, Carolina; López, Domingo en aquest article es descriu la metodologia seguida durant el procés de restauració de la Balaenoptera physalus, la balena emblemàtica del Museu de Ciències Naturals de Barcelona. També s'exposen les problemàtiques i reptes d'una restauració singular, duta a terme per l'equip de l'Institut Català de Paleontologia Miquel Crusafont, en què el treball en equip i la coordinació d'ambdues institucions ha permès acabar amb èxit un projecte de conservació i restauració d'una gran dificultat.; En este artículo se describe la metodología seguida durante el proceso de restauración de la Balaenoptera physalus, la ballena emblemática del Museo de Ciencias Naturales de Barcelona. También se exponen las problemáticas y retos de una restauración singular, llevada a cabo por el equipo del Institut Català de Paleontologia Miquel Crusafont, en el que el trabajo en equipo y la coordinación de ambas instituciones ha permitido terminar con éxito un proyecto de conservación y restauración de una gran dificultad.; This article describes the methodology followed during the restoration process of the Balaenoptera physalus, the emblematic whale of the Museum of Natural Sciences of Barcelona. The problems and challenges of a singular restoration, carried out by the Catalan Institute of Palaeontology Institute Miquel Crusafont, are also exposed, where teamwork and the coordination of both institutions has allowed to successfully complete a conservation and restoration project of great difficulty. 2012-01-01T00:00:00Z