7 Works

Changing diets over time: knock-on effects of marine megafauna overexploitation on their competitors in the South-Western Atlantic Ocean

Maria Bas, Angélica M. Tivoli, Ivan Briz I Godino, Mónica Salemme, Fernando Santiago, Juan Bautista Belardi, Florencia Borella, Damián G. Vales, Enrique A. Crespo & Luis Cardona
This study compares the δ15N values and the trophic position of two seabird species throughout the Late Holocene in three regions in the South-Western Atlantic Ocean to assess the hypothesis that the decimation of megafauna lead to changes in the trophic position of mesopredators. Modern and ancient mollusc shells were also analysed to account for changes in the isotopic baseline through time. Results revealed that modern Magellanic penguins have higher δ15N values than their ancient...

β-cell-specific deletion of Zfp148 improves nutrient-stimulated β-cell Ca2+ responses

Christopher Emfinger, Alan Attie, Matthew Merrins, Eleonora De Klerk, Matthias Hebrok, Richard Kibbey, Rebecca Cardone, Kathryn Schueler, Mary Rabaglia, Shane Simonett, Donnie Stapleton, Kelly Mitok, Sophie Lewandowski, Ziyue Wang, Christina Kendziorski, Mark Keller, Hannah Foster, Stephen Gygi, Xinyue Liu, Joao Paulo, Qinq Yu & José Perales
Insulin secretion from pancreatic β-cells is essential for glucose homeostasis. An insufficient response to the demand for insulin results in diabetes. We previously showed that β-cell-specific deletion of Zfp148 (β-Zfp148KO) improves glucose tolerance and insulin secretion in mice. Here, we performed Ca2+ imaging of islets from β‑Zfp148KO and control mice on both a chow and a Western-style diet. β-Zfp148KO islets demonstrate improved sensitivity and sustained Ca2+ oscillations in response to elevated glucose. β-Zfp148KO islets also...

The non-dereliction in evolution: Trophic specialisation drives convergence in the radiation of red devil spiders (Araneae: Dysderidae) in the Canary Islands

Adrià Bellvert, Silvia Adrián-Serrano, Nuria Macías-Hernández, Søren Toft, Antigoni Kaliontzopoulou & Miquel A. Arnedo
Natural selection plays a key role in deterministic evolution, as clearly illustrated by adaptive radiations. Unlike most spiders, Dysdera species display a high variability of cheliceral morphologies, which has been suggested to reflect different levels of specialisation to feed on isopods. In this study, we integrate geometric morphometrics and experimental trials with a fully resolved phylogeny of the highly diverse endemic species from the Canary Islands to (1) characterize cheliceral morphologies, (2) unravel their dietary...

Dugesia (Tricladida, Platyhelminthes) Cox1, 18S, 28S, ITS-1, DUNUC3, DUNUC5 datasets for worldwide biogeographic study

Marta Riutort & Eduard Solà
Aim: Freshwater planarians may have a wide geographic range despite their assumed low vagility. Found across four continents, Dugesia may have either an ancient origin on a large paleo landmass, followed by colonisation in different regions before continental fragmentation, or a more recent origin and subsequent transoceanic dispersal. We seek to resolve between these two hypotheses. Location: Africa, Eurasia, and Australasia Taxon: Genus Dugesia (Platyhelminthes: Tricladida: Dugesiidae) Methods: We used data from the sequencing of...

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...

Elevational and local climate variability predicts thermal breadth of mountain tropical tadpoles

Pol Pintanel, Miguel Tejedo, Andrés Merino-Viteri, Freddy Almeida-Reinoso, Sofia Salinas-Ivanenko, Andrea C. López-Rosero, Gustavo A. Llorente & Luis M. Gutiérrez-Pesquera
The climate variability hypothesis posits that increased environmental thermal variation should promote species with broader thermal tolerance breadths, while stable environments should promote thermal specialists. This hypothesis has been tested on large spatial scales, such as latitude and elevation, but less so on smaller scales which reflect the experienced microclimate. Here, we estimated thermal tolerance limits of 75 species of amphibian tadpoles from an aseasonal tropical mountain range of the Ecuadorian Andes, distributed along a...

Tree growth response to drought partially explains regional-scale growth and mortality patterns in Iberian forests

Antonio Gazol, J. Julio Camarero, Raúl Sánchez-Salguero, Miguel A. Zavala, Xavier Serra-Maluquer, Emilia Gutiérrez, Martín De Luis, Gabriel Sangüesa-Barreda, Klemen Novak, Vicente Rozas, Pedro A. Tíscar, Juan C. Linares, Edurne Martínez Del Castillo, Montse Ribas, Ignacio García-González, Fernando Silla, Álvaro Camison, Mar Génova, José M. Olano, Ana-Maria Hereş, Jorge Curiel Yuste, Luis A. Longares, Andrea Hevia, J. Diego Galván & Paloma Ruiz-Benito
To quantify responses to drought from different data sources we take advantage of an extensive network of cross-dated tree-ring data with increment cores from 16 tree species sampled across the Spanish Iberian Peninsula (hereafter abbreviated as RWI-net), and of the Spanish National Forest Inventory (hereafter abbreviated as NFI) sampling tree and plot level data each km in forested areas. We selected the five most severe droughts that have affected each selected RWI-net population in the...

Registration Year

  • 2022
    7

Resource Types

  • Dataset
    7

Affiliations

  • University of Barcelona
    7
  • Helmholtz Centre for Environmental Research
    1
  • Estación Biológica de Doñana
    1
  • Basque Centre for Climate Change
    1
  • National Institute of Environmental Health Sciences
    1
  • University of Zaragoza
    1
  • University of Extremadura
    1
  • Transylvania University of Brașov
    1
  • University of Valladolid
    1
  • University of Wisconsin-Madison
    1