Biogeografía, Diversidad Filogenética y Conservación los Helechos y Licófitos Europeos

Tesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Biología. Fecha de Lectura: 17-06-2022Luciano Gomes Pataro de Almeida Aguiar was supported by the Science without Borders Ph.D. grant program (1192-13-2) from CAPES, Ministry of Education of Brazil. The research of this thesis was funded by the Spanish Ministry of Science, Innovation and Universities through the Bioregions 2.0 project (CGL2017-86926-P grant to Miguel Ángel Rodríguez and Juan Carlos Moreno Saiz

Global patterns of tree density are contingent upon local determinants in the world’s natural forests

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubierePrevious attempts to quantify tree abundance at global scale have largely neglected the role of local competition in modulating the influence of climate and soils on tree density. Here, we evaluated whether mean tree size in the world’s natural forests alters the effect of global productivity on tree density. In doing so, we gathered a vast set of forest inventories including >3000 sampling plots from 23 well-conserved areas worldwide to encompass (as much as possible) the main forest biomes on Earth. We evidence that latitudinal productivity patterns of tree density become evident as large trees become dominant. Global estimates of tree abundance should, therefore, consider dependencies of latitudinal sources of variability on local biotic influences to avoid underestimating the number of trees on Earth and to properly evaluate the functional and social consequence

Atlas de los pteridófitos de la Península Ibérica e Islas Baleares

Distributions of southwest European lycophytes and ferns (Andorra, mainland Spain, mainland Portugal and the Balearic Islands) have been mapped using the UTM grid of 10 km of side. The chorological compilation includes bibliography and electronic georeferenced sources of public access covering the 128 taxa present in the study area.Se han elaborado los mapas de distribución de los licófitos y helechos del suroccidente europeo (Andorra, España continental, Portugal continental e Islas Baleares) empleando la malla UTM de 10 km de lado. La síntesis corológica incluye citas bibliográficas y fuentes electrónicas georreferenciadas de acceso público para un total de 128 taxones presentes en el territorio

The road to 2020 targets and the learnings from the emblematic South American plant genus <i>Nassauvia</i> (Asteraceae)

The elaboration of a comprehensive database about the distribution of the South American genus Nassauvia has allowed investigate its conservation biogeography. The combined use of historical (Dispersal Vicariance Analysis) and ecological (UPGMA) biogeographical approaches has led to detecting past, present and future critical areas in the evolution and persistence of the genus. According to the size of distribution areas, number of locations, environmental niche models, and predicted shifts of these spatial characteristics following the Intergovernmental Panel on Climate Change forecasts for the next decade, it has been possible to award the level of global and national risk for all species of the genus and assign their corresponding IUCN categories. Severe gaps in legal and in situ conservation policies have been detected within the region, making it urgent the adoption of measures aimed at preventing the extinction of the most endangered species. We identify a future dramatic loss of Nassauvia species in the Andes and conversely a species increase in Patagonia. Patagonia has emerged as the cradle of the genus and could be its refuge in the future according the predictions targeted by climate change.Museo de La Plat

Atlas of the vascular flora of the Iberian Peninsula biodiversity hotspot (AFLIBER)

Motivation: We accessed published and unpublished floristic sources to compile a comprehensive species list of the Iberian–Balearic terrestrial vascular flora and generate AFLIBER, an accurate floristic database of georeferenced plant occurrence records. Main type of variable contained: Species distribution data totalling 1,824,549 plant occurrence records corresponding to 6,456 species and subspecies. Spatial location and grain: The western Mediterranean, including inland territories of Spain, Portugal and Andorra and the adjacent archipelagos of Berlengas, Columbretes and the Balearic Islands, covered by 6,316 UTM quadrangular grid cells of 10 km resolution. Time period: All distributional trustable records were considered to create the AFLIBER database, most of them dating from the 1960s onwards. Major taxa and level of measurement: Terrestrial vascular plant species and subspecies. Software format: Data are supplied as comma-separated text (csv) files

Microlicieae (Melastomataceae) no município de Mucugê, Chapada Diamantina, Bahia, Brasil

Resumo O presente estudo fornece o tratamento taxonômico das espécies de Microlicieae para o município de Mucugê, Chapada Diamantina, Bahia, Brasil. Foram catalogadas 27 espécies distribuídas nos gêneros Microlicia (24 espécies), Lavoisiera (L. harleyi e L. nervulosa) e Trembleya (T. parviflora). Com exceção de M. fasciculata, M. viminalis e T. parviflora, as demais espécies encontradas em Mucugê são endêmicas da Chapada Diamantina. Entre as espécies de Microlicia, quatro foram recentemente descritas e outras quatro ainda necessitam de estudos complementares para sua identificação. Anteras poliesporangiadas foram descritas pela primeira vez para 11 espécies de Microlicia. As espécies de Microlicieae ocupam áreas de campo rupestre em altitudes entre 900-1.500 m, em solos arenosos ou pedregosos, às vezes associadas a cursos d'água

Atlas of the pteridophytes of the Iberian Peninsula and the Balearic Islands

Se han elaborado los mapas de distribución de los licófitos y helechos del suroccidente europeo (Andorra, España continental, Portugal continental e Islas Baleares) empleando la malla UTM de 10 km de lado. La síntesis corológica incluye citas bibliográficas y fuentes electrónicas georreferenciadas de acceso público para un total de 128 taxones presentes en el territorio

The road to 2020 targets and the learnings from the emblematic South American plant genus Nassauvia (Asteraceae)

The elaboration of a comprehensive database about the distribution of the South American genus Nassauvia has allowed investigate its conservation biogeography. The combined use of historical (Dispersal Vicariance Analysis) and ecological (UPGMA) biogeographical approaches has led to detecting past, present and future critical areas in the evolution and persistence of the genus. According to the size of distribution areas, number of locations, environmental niche models, and predicted shifts of these spatial characteristics following the Intergovernmental Panel on Climate Change forecasts for the next decade, it has been possible to award the level of global and national risk for all species of the genus and assign their corresponding IUCN categories. Severe gaps in legal and in situ conservation policies have been detected within the region, making it urgent the adoption of measures aimed at preventing the extinction of the most endangered species. We identify a future dramatic loss of Nassauvia species in the Andes and conversely a species increase in Patagonia. Patagonia has emerged as the cradle of the genus and could be its refuge in the future according the predictions targeted by climate change.Fil: Grossi, Mariana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; ArgentinaFil: Draper, David. Universidade de Lisboa; Portugal. University of British Columbia; CanadáFil: Apodaca, María José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; ArgentinaFil: Vitali, Maira Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; ArgentinaFil: Pataro, Luciano. Universidad Autónoma de Madrid; EspañaFil: Katinas, Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División de Plantas Vasculares; ArgentinaFil: Moreno Saiz, Juan Carlos. Universidad Autónoma de Madrid; Españ

Purification and characterization of Aspergillus terreus α-Galactosidases and their use for hydrolysis of Soymilk Oligosaccharides

α-Galactosidases has the potential to hydrolyze α-1-6 linkages in raffinose family oligosaccharides (RFO). Aspergillus terreus cells cultivated on wheat bran produced three extracellular forms of α-galactosidases (E1, E2, and E3). E1 and E2 α-galactosidases presented maximal activities at pH 5, while E3 α-galactosidase was more active at pH 5.5. The E1 and E2 enzymes showed stability for 6 h at pH 4–7. Maximal activities were determined at 60, 55, and 50°C, for E1, E2, and E3 α-galactosidase, respectively. E2 α-galactosidase retained 90% of its initial activity after 70 h at 50°C. The enzymes hydrolyzed ρNPGal, melibiose, raffinose and stachyose, and E1 and E2 enzymes were able to hydrolyze guar gum and locust bean gum substrates. E1 and E3 α-galactosidases were completely inhibited by Hg2+, Ag+, and Cu2+. The treatment of RFO present in soy milk with the enzymes showed that E1 α-galactosidase reduced the stachyose content to zero after 12 h of reaction, while E2 promoted total hydrolysis of raffinose. The complete removal of the oligosaccharides in soy milk could be reached by synergistic action of both enzyme