17 Works

A mechanism for red coloration in vertebrates

Matthew Toomey, Cristiana Marques, Pedro Araújo, Delai Huang, Siqiong Zhong, Yu Liu, Gretchen Schreiner, Connie Myers, Paulo Pereira, Sandra Afonso, Pedro Andrade, Malgorzata Gazda, Ricardo Lopes, Ivan Viegas, Maureen Haynes, Dustin Smith, Yohey Ogawa, Daniel Murphy, Rachel Kopec, David Parichy, Miguel Carneiro & Joseph Corbo
Red coloration is a salient feature of the natural world. Many vertebrates produce red color by converting dietary yellow carotenoids into red ketocarotenoids via an unknown mechanism. Here, we show that two enzymes, cytochrome P450 2J19 (CYP2J19) and 3-hydroxybutyrate dehydrogenase 1-like (BDH1L), are sufficient to catalyze this conversion. In birds, both enzymes are expressed at sites of ketocarotenoid biosynthesis (feather follicles and red cone photoreceptors), and genetic evidence implicates these enzymes in yellow/red color variation...

Seasonal variation in impact of non-native species on tropical seed dispersal networks

Alba Costa, Ruben Heleno, Yanick Dufrene, Eleanor Huckle, Ronny Gabriel, Xavier Harrison, Dana G. Schabo, Nina Farwig & Christopher N. Kaiser-Bunbury
Invasive non-native species can alter animal-mediated seed dispersal interactions and ultimately affect the stability of recipient communities. The degree of such disturbances, however, is highly variable and depends on several factors, two of which have received little attention: the relative timing of native and non-native fruiting phenologies, and the associated variation in relative resource availability across the fruiting period. Both are likely to alter plant-seed disperser interactions threatened by biological invasions. Here we investigated the...

Comparison of radon and thoron exhalation and emanation in granites from Central Portugal

Filipa P. Domingos , Sérgio L. R. Sêco & Alcides J. S. C. Pereira
Thoron contribution to the inhaled dose is often neglected due to its shorter half-life and lack of strong gamma emissions that hinder its measurement. However, numerous studies report a significant contribution of thoron and/or its progeny to the dose received by the population. In the present work, radon and thoron exhalation rate and emanation coefficient were measured simultaneously with the accumulation method with an AlphaGuard DF2000 monitor in granite samples collected in high background radiation...

Risk assessment of radioactivity in water intended for human consumption in mainland Portugal

Filipa P. Domingos & Alcides J. S. C. Pereira
University of Coimbra, LRN-Laboratory of Natural Radioactivity, Department of Earth Sciences, Portugal(1);IATV-Instituto do Ambiente, Tecnologia e Vida, Coimbra, Portugal.(2);University of Coimbra, CITEUC-Center for Earth and Space Research, Department of Earth Sciences, Portugal(3);The requirements for radiological protection regarding radioactive substances in water intended for human consumption are established in the Council Directive 2013/51/EURATOM of 22 October 2013. In Portugal, the Directive was transposed to the Decree-Law 152/2017, of December 7, which states that the entities managing...

Dataset: A global synthesis of human impacts on the multifunctionality of streams and rivers

Mario Brauns, Daniel C. Allen, Iola G. Boëchat, Wyatt F. Cross, Verónica Ferreira, Daniel Graeber, Christopher J. Patrick, Marc Peipoch, Daniel Von Schiller & Björn Gücker
Human impacts, particularly nutrient pollution and land-use change, have caused significant declines in the quality and quantity of freshwater resources. Most global assessments have concentrated on species diversity and composition, but effects on the multifunctionality of streams and rivers remain unclear. Here, we analyse the most comprehensive compilation of stream ecosystem functions to date to provide an overview of the responses of nutrient uptake, leaf litter decomposition, ecosystem productivity, and food web complexity to six...

Flower strips and remnant semi-natural vegetation have different impacts on pollination and productivity of sunflower crops

Lucie Mota, Violeta Hevia, Carlos Rad, Joana Alves, António Silva, José González, Jorge Ortega-Marcos, Oscar Aguado, Paloma Alcorlo, Francisco M. Azcárate, Libertad Chapinal, César A. López, João Loureiro, Evan A. N. Marks, Catarina Siopa, José Paulo Sousa & Sílvia Castro
Intensification of agricultural landscapes to fulfil increased global food demands has dramatically impacted biodiversity and ecosystem services. Several pollinator groups, which are vital for the maintenance of pollinator-dependent crops, have been severely affected by this intensification process. Management tools, such as the implementation of agri-environmental schemes, have been widely proposed to improve pollinator's communities and pollination services, although the effectiveness of wildflower strips in comparison to existing natural or semi-natural habitats and the impact on...

Diaspore traits specialized to animal adhesion and sea current dispersal are positively associated with the naturalization of European plants across the World

Jaime Moyano, Essl Franz, Ruben Heleno, Vargas Pablo, Martin A. Nuñez & Mariano A. Rodriguez-Cabal
Understanding what drives non-native species naturalization (the establishment of a self-sustainable population outside its native range) is a central question in invasion science. Plants’ capacity for long distance dispersal (LDD) is likely to influence the spread and naturalization of non-native species differently according to their introduction pathways. These pathways include intentional introductions (for economic use, e.g. for agriculture), unintentional introductions (e.g. seed contaminants), plant dispersal via human infrastructures (e.g. roads), and plant spread from an...

Data from: An integrative skeletal and paleogenomic analysis of stature variation suggests relatively reduced health for early European farmers

Stephanie Marciniak, Christina Bergey, Ana Maria Silva, Agata Hałuszko, Mirosław Furmanek, Barbara Veselka, Petr Velemínský, Giuseppe Vercellotti, Joachim Wahl, Gunita Zarina, Cristina Longhi, Jan Kolář, Rafael Garrido-Pena, Raúl Flores-Fernández, Ana M. Herrero-Corral, Angela Simalcsik, Werner Müller, Alison Sheridan, Žydrūnė Miliauskienė, Rimantas Jankauskas, Vyacheslav Moiseyev, Kitti Köhler, Ágnes Király, Beatriz Gamarra, Olivia Cheronet … & George H. Perry
Human culture, biology, and health were shaped dramatically by the onset of agriculture ~12,000 years before present (BP). This shift is hypothesized to have resulted in increased individual fitness and population growth as evidenced by archaeological and population genomic data alongside a decline in physiological health as inferred from skeletal remains. Here, we consider osteological and ancient DNA data from the same prehistoric individuals to study human stature variation as a proxy for health across...

Curia na rota dos refugiados da Segunda Guerra Mundial: o caso da família Stadler (1940)

Carolina Henriques Pereira

Princípios teóricos e metodológicos para o uso de corpus numa investigação

Mafalda Mendes, Mário Martins, Marta Sitoe & Emília Marrengula

Diálogos Luso-Sefarditas: um projecto que se transformou em livro

Andrade António Lopes, Saul António Gomes & Maria de Fátima Reis

Diálogos Luso-Sefarditas

António Manuel Lopes Andrade, Saul António Gomes & Maria de Fátima Reis

Design of timber-concrete-composite structures

Jörg Schänzlin & Dias Alfred

Registration Year

  • 2022

Resource Types

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  • University of Coimbra
  • University of Aveiro
  • The Ohio State University
  • University of Lisbon
  • Autonomous University of Madrid
  • University of Vienna
  • Pennsylvania State University
  • University of Applied Sciences Biberach
  • Helmholtz Centre for Environmental Research
  • Institute for Anthropological Research