64 Works

Data from: Tracking global change using lichen diversity: towards a global-scale ecological indicator

Paula Matos, Linda Geiser, Amanda Hardman, Doug Glavich, Pedro Pinho, Alice Nunes, Amadeu M. V. M. Soares, Cristina Branquinho & Amadeu M.V.M. Soares
Lichens have been used to efficiently track major drivers of global change from the local to regional scale since the beginning of the industrial revolution (sulphur dioxide) to the present (nitrogen deposition and climate change). Currently, the challenge is to universalize monitoring methodologies to compare global change drivers’ simultaneous and independent effects on ecosystems and to assess the efficacy of mitigation measures. Because two protocols are now used at a continental scale North America (US)...

Data from: Multiple processes drive genetic structure of humpback whale (Megaptera novaeangliae) populations across spatial scales

Francine Kershaw, Inês Carvalho, Jacqueline Loo, Cristina Pomilla, Peter B. Best, Ken P. Findlay, Salvatore Cerchio, Tim Collins, Marcia H. Engel, Gianna Minton, Peter Ersts, Jaco Barendse, P. G. H. Kotze, Yvette Razafindrakoto, Solange Ngouessono, Michael Meӱer, Meredith Thornton & Howard C. Rosenbaum
Elucidating patterns of population structure for species with complex life histories, and disentangling the processes driving such patterns, remains a significant analytical challenge. Humpback whale (Megaptera novaeangliae) populations display complex genetic structures that have not been fully resolved at all spatial scales. We generated a data set of nuclear markers for 3,575 samples spanning the seven breeding stocks and substocks found in the South Atlantic and western and northern Indian Oceans. For the total sample,...

Data from: Faster migration in autumn than in spring: seasonal migration patterns and non-breeding distribution of Icelandic Whimbrels Numenius phaeopus islandicus

Camilo Carneiro, Tómas G. Gunnarsson & José A. Alves
Migration is fundamental in the life of many birds and entails significant energetic and time investments. Given the importance of arrival time in the breeding area and the relatively short period available to reproduce (particularly at high latitudes), it is expected that birds reduce spring migration duration to a greater extent than autumn migration, assuming that pressure to arrive into the wintering area might be relaxed. This has previously been shown for several avian groups,...

Photoinhibition of Photosystem II in phytoplankton: processes and patterns

Douglas Campbell & João Serôdio
All the diverse lineages of phytoplankters use conserved Photosystem II complexes to mediate photochemical extraction of electrons from water, with concomitant release of oxygen. Photosystem II suffers light-dependent photoinactivation through multiple mechanisms, which is in turn countered by protein subunit removal and replacement. This cycle imposes both direct costs and also delayed opportunity costs. The effective quantum yield for photoinactivation of Photosystem II depends upon taxa, cell size, prior acclimation state, the instantaneous spectral regime...

Matemática com vida

Isabel Cabrita, Vanda Santos, Teresa Neto & J. Bernardino Lopes

Market Opportunities for Octopus in the Atlantic Area

Katina Roumbedakis, Cristina Pita & Graham J. Pierce

Investigação em Educação e Responsabilidade Social

Maria Helena Araújo e Sá (coord.)

Catálogo de parasitas e patologias do berbigão-vulgar Cerastoderma edule

Xavier de Montaudouin, Simão Correia, Rosa Freitas & Luísa Magalhães

Energia, Mobilidade e Transportes

Margarida C. Coelho

Data from: Coral feeding on microalgae assessed with molecular trophic markers

Miguel C. Leal, Christine Ferrier-Pagès, Ricardo Calado, Megan E. Thompson, Marc E. Frischer & Jens C. Nejstgaard
Herbivory in corals, especially for symbiotic species, remains controversial. To investigate the capacity of scleractinian and soft corals to capture microalgae, we conducted controlled laboratory experiments offering five algal species: the cryptophyte Rhodomonas marina, the haptophytes Isochrysis galbana and Phaeocystis globosa, and the diatoms Conticribra weissflogii and Thalassiosira pseudonana. Coral species included the symbiotic soft corals Heteroxenia fuscescens and Sinularia flexibilis, the asymbiotic scleractinian coral Tubastrea coccinea, and the symbiotic scleractinian corals Stylophora pistillata, Pavona...

Data from: Bats (Chiroptera: Noctilionoidea) challenge a recent origin of extant neotropical diversity

Danny Rojas, Omar M. Warsi & Liliana M. Dávalos
The mechanisms underlying the high extant biodiversity in the Neotropics have been controversial since the 19th century. Support for the influence of period-specific changes on diversification often rests on detecting more speciation events during a particular period. The timing of speciation events may reflect the influence of incomplete taxon sampling, protracted speciation, and null processes of lineage accumulation. Here we assess the influence of these factors on the timing of speciation with new multilocus data...

Data from: Starting a DNA barcode reference library for shallow water polychaetes from the southern European Atlantic coast

Jorge Lobo, Marcos A. L. Teixeira, Luisa M. S. Borges, Maria S. G. Ferreira, Claudia Hollatz, Pedro T. Gomes, Ronaldo Sousa, Ascensão Ravara, Maria H. Costa & Filipe O. Costa
Annelid polychaetes have been seldom the focus of dedicated DNA barcoding studies, despite their ecological relevance and often dominance, particularly in soft-bottom estuarine and coastal marine ecosystems. Here, we report the first assessment of the performance of DNA barcodes in the discrimination of shallow water polychaete species from the southern European Atlantic coast, focusing on specimens collected in estuaries and coastal ecosystems of Portugal. We analysed cytochrome oxidase I DNA barcodes (COI-5P) from 164 specimens,...

Data from: Low fitness at low latitudes: wintering in the tropics increases migratory delays and mortality rates in an Arctic breeding shorebird

Jeroen Reneerkens, Tom S.L. Versluijs, Theunis Piersma, Jose Alves, Mark Boorman, Colin Corse, Olivier Gilg, Gunnar Hallgrimsson, Johannes Lang, Bob Loos, Yaa Ntiamoa-Baidu, Alfred Nuoh, Peter Potts, Job Ten Horn & Tamar Lok
1. Evolutionary theories of seasonal migration generally assume that the costs of longer migrations are balanced by benefits at the non-breeding destinations. 2. We tested, and rejected, the null hypothesis of equal survival and timing of spring migration for High Arctic breeding sanderling Calidris alba using six and eight winter destinations between 55° N and 25° S, respectively. 3. Annual apparent survival was considerably lower for adult birds wintering in tropical West-Africa (Mauritania: 0.74 and...

Data from: Shorebirds as important vectors for plant dispersal in Europe

Ádám Lovas-Kiss, Marta I. Sanchez, David M. Wilkinson, Neil E. Coughlan, Jose A. Alves & Andy J. Green
Shorebirds (Charadriiformes) undergo rapid migrations with potential for long-distance dispersal (LDD) of plants. We studied the frequency of endozoochory by shorebirds in different parts of Europe covering a broad latitudinal range and different seasons. We assessed whether plants dispersed conformed to morphological dispersal syndromes. A total of 409 excreta samples (271 faeces and 138 pellets) were collected from redshank (Tringa totanus), black-winged stilt (Himantopus himantopus), pied avocet (Recurvirostra avosetta), northern lapwing (Vanellus vanellus), Eurasian curlew...

Data from: A full annual perspective on sex-biased migration timing in long-distance migratory birds

Martins Briedis, Silke Bauer, Peter Adamik, José A. Alves, Joana S. Costa, Tamara Emmenegger, Lars Gustafsson, Jaroslav Koleček, Felix Liechti, Christoph M. Meier, Petr Prochazka & Steffen Hahn
In many taxa, the most common form of sex-biased migration timing is protandry – the earlier arrival of males at breeding areas. Here we test this concept across the annual cycle of long-distance migratory birds. Using more than 350 migration tracks of small-bodied trans-Saharan migrants, we quantify differences in male and female migration schedules and test for proximate determinants of sex-specific timing. In spring, males on average departed from the African non-breeding sites about 3...

Linking range wide energetic trade-offs to breeding performance in a long-distance migrant

Camilo Carneiro, Tómas Gunnarsson, Veronica Méndez, Amadeu Soares & Jose Alves
Understanding how individual trade-offs and carry-over effects along the annual cycle influence fitness is fundamental to unravel population dynamics, but such data is particularly challenging to collect in long-distance migrants. Here, with a full annual cycle perspective of Icelandic whimbrels Numenius phaeopus islandicus, we investigate trade-offs across the entire distribution, assessing migration costs and wintering energetic balance experienced throughout the wintering range (from temperate to tropical regions), and link these to breeding parameters for two...

Proceedings of 1st International Conference in Accounting and Finance Innovation

Maria Anunciação Bastos (Ed.), Rui Pedro Marques (Ed.), Cristina Peguinho (Ed.) & Sandra Caçador (Ed.)

The tolerance travelling poster show

Álvaro Sousa & Teresa Franqueira

Projeto em Design de Produto para novos paradigmas

Eduardo Noronha, Emanuel Oliveira & Pedro Martins

Aprendizagens profissionais de atores educativos

Ana Isabel Andrade, Carlota Fernandes Tomaz, Betina Silva-Lopes, Nilza Costa & Carla Ferreira

Inventario de parasitos e enfermidades do berberecho Cerastoderma edule

Xavier de Montaudouin, Simão Correia, Rosa Freitas & Luísa Magalhães

Data from: Transcriptomics and in vivo tests reveal novel mechanisms underlying endocrine disruption in an ecological sentinel, Nucella lapillus

Sonia Pascoal, Gary Carvalho, Olga Vasieva, Roger Hughes, Andrew Cossins, Yongxiang Fang, Kevin Ashelford, Lisa Olohan, Carlos Barroso, Sonia Mendo & Simon Creer
Anthropogenic endocrine disruptors now contaminate all environments globally, with concomitant deleterious effects across diverse taxa. While most studies on endocrine disruption (ED) have focused on vertebrates, the superimposition of male sexual characteristics in the female dogwhelk, Nucella lapillus (imposex), caused by organotins, provides one of the most clearcut ecological examples of anthropogenically induced ED in aquatic ecosystems. To identify the underpinning mechanisms of imposex for this ‘nonmodel’ species, we combined Roche 454 pyrosequencing with custom...

Data from: Molecular assessment of heterotrophy and prey digestion in zooxanthellate cnidarians

Miguel C. Leal, Jens C. Nejstgaard, Ricardo Calado, Megan E. Thompson & Marc E. Frischer
Zooxanthellate cnidarians are trophically complex, relying on both autotrophy and heterotrophy. Although several aspects of heterotrophy have been studied in these organisms, information linking prey capture with digestion is still missing. We used prey-specific PCR-based tools to assess feeding and prey digestion of two zooxanthellate cnidarians - the tropical sea anemone Aiptasia sp. and the scleractinian coral Oculina arbuscula. Prey DNA disappeared rapidly for the initial one to three days, whereas complete digestion of prey...

Individual variation in migratory behavior in a sub-arctic partial migrant shorebird

Verónica Méndez Aragón, Jose Alves, Bodvar Þórisson, Alina Marca, Tomas Gunnarsson & Jennifer Gill
Migratory behavior can differ markedly amongst individuals within populations or species. Understanding the factors influencing this variation is key to understanding how current environmental changes might influence migratory propensity and the distribution and abundance of migratory species across their range. Here, we investigate variation in migratory behavior of the partially migratory Eurasian oystercatcher (Haematopus ostralegus) population breeding in Iceland. We use resightings of color-ringed adults and stable isotopes to determine whether individuals migrate or remain...

Data from: Structure and functioning of intertidal food webs along an avian flyway: a comparative approach using stable isotopes

Teresa Catry, Pedro M. Lourenço, Ricardo J. Lopes, Camilo Carneiro, José A. Alves, Joana Costa, Hamid Rguibi-Idrissi, Stuart Bearhop, Theunis Piersma & José P. Granadeiro
Food webs and trophic dynamics of coastal systems have been the focus of intense research throughout the world, as they prove to be critical in understanding ecosystem processes and functions. However, very few studies have undertaken a quantitative comparison of entire food webs from a key consumer perspective across a broad geographical area, limiting relevant comparisons among systems with distinct biotic and abiotic components. We investigate the structure and functioning of food webs in four...

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