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The 18th century Portuguese church furniture represents an extraordinary richness recognised worldwide, which demands safeguarding and valorisation. The identification of the wood of furniture artworks is the most important component for its comprehension and preservation. In this work wood anatomical characters of an 18th century Portuguese decorative furniture set from the Colegiada de São Martinho de Cedofeita, in Porto, were analysed to identify the woods used for manufacturing and to clarify their common names. Furthermore, the objectives were to recognise some of the criteria for choice of wood as well as the source of each wood. The woods identified from 16 fragments belong to Apuleia sp., Acacia sp., Neolamarckia sp. and Castanea sativa. Apuleia sp. and Acacia sp. woods most likely arrived from Brazil, while the Neolamarckia sp. woods likely arrived from India and the C. sativa woods from Portugal. The results are in accordance with the known Portuguese colonial sea routes of the 15th -18th centuries. Interestingly the terms found in the inventories can refer to finishing methods instead to the name of the woods, as for instance “oil wood” can refer to “oiled wood” or “linseed oiled wood”. The species choice may be related to the mechanical properties of the wood as well as the original tree size. Two large planks of Acacia sp. were used for the top of the “Portuguese arcaz”, and Apuleia sp. was found on main structural elements of this set of furniture, suggesting that wood colour was also important. Woods from Neolamarckia sp. and C. sativa, were also identified, being Castanea wood present only in the most recent pieces of the furniture set.

We studied decorative Portuguese furniture from the 18th century Clérigos Church in Porto, to identify the woods used, to analyze their possible origin and understand the criteria for wood choice, according to sample location. We identified wood from Acacia sp., Castanea sativa, Couratari sp. and Dalbergia nigra. D. nigra, Acacia sp. and Couratari sp. may have arrived from Brazil, according to their natural distribution and the Portuguese colonial routes; C. sativa was abundant in the North Region of Portugal. In the 18th century, golden metal brass over black furniture was in fashion in Portuguese ecclesiastical cabinet making. Due to its dark colour, Dalbergia nigra was a desirable wood for the exposed structures of ecclesiastical furniture, such as top drawers and top tables. Couratari is a pale wood. Therefore, it was used in the inner structure of the drawers and legs. Acacia wood was also used in internal parts due to its durability. C. sativa was local and extensive; its wood was used in the inner structures, where it could not be seen. Marks were found in the Couratari wood, which indicated that the timber from chest boards employed to carry sugar from Brazil to Portugal was reused. The high silica content of Couratari wood makes it ideal for building “sugar chests”., POCI 2010 (Programa Operacional Ciência e Inovação 2010). Government and the European Union by the FEDER (Fundo Europeu para o Desenvolvimento Regional). Portuguese Foundation for Science and Technology (FCT)

Los Vehículos Aéreos no Tripulados comúnmente conocidos como drones son considerados como una de las tecnologías multidimensionales de la era contemporánea (Khan et al., 2017). Esta tecnología avanza a pasos agigantados basándose en aplicaciones fotogramétricas en muchas áreas del conocimiento e industrias tales como: La prospección y exploración de recursos minerales (López Jimeno & Martín Sánchez, 2015), agricultura (Montesinos Aranda, 2015), control de obras y evaluación de impactos (Campo Molinuevo, 2015), cartografía (Saez Paredes & Beltrán Noguera, 2015), y por supuesto a una de las profesiones más antiguas del mundo la Topografía (El Meouche et al., 2016., Peterman & Mesaric, 2012); entre muchas más que se darán en el futuro según Hassanalian & Abdelkefi (2017) Consejo Nacional de Ciencia y Tecnología (CONACyT)

Actualmente, la sociedad enfrenta problemas en los ecosistemas donde habita, sin duda esto se debe en gran parte al calentamiento global que a su vez este se ha ido acelerando y ha sido ocasionado por el desarrollo de actividades antrópicas, así mismo en gran parte de la atención sé ha centrado y generado tema de sumo interés sobre todo en el ámbito científico, el cual es un gran desafío en el cual la sociedad debe de actuar y adaptarse. Por otro lado, en los últimos 50 años se tiene conocimiento en donde la transformación de los ecosistemas ha alcanzado magnitudes inimaginables. De los cambios que más destacan son la perdida de cubiertas forestales y la perturbación de los ecosistemas (Mas et al. 2009). Sin duda, las actividades que se ejercen localmente han realizado efectos que trascienden y afectan el funcionamiento global del sistema (Vázquez-Jiménez, 2017) Consejo Nacional de Ciencia y Tecnología (CONACyT)