16 Works

Data from: Stable isotopes reveal the effect of trawl fisheries on the diet of commercially exploited species

Hilmar Hinz, Joan Moranta, Stephen Balestrini, Marija Sciberras, Julia R. Pantin, James Monnington, Alex Zalewski, Michel J. Kaiser, Mattias Sköld, Patrik Jonsson, Francois Bastardie & Jan Geert Hiddink
Bottom trawling can change food availability for benthivorous demersal species by (i) changing benthic prey composition through physical seabed impacts and (ii) by removing overall benthic consumer biomass increasing the net availability of benthic prey for remaining individuals. Thus trawling may both negatively and positively influence the quantity and quality of food available. Using δ13C and δ15N we investigated potential diet changes of three commercially exploited species across trawling gradients in the Kattegat (plaice, dab...

Data from: A global perspective on the trophic geography of sharks

Christopher Stephen Bird, Ana Veríssimo, Sarah Magozzi, Kátya G. Abrantes, Alex Aguilar, Hassan Al-Reasi, Adam Barnett, Dana M. Bethea, Gérard Biais, Asuncion Borrell, Marc Bouchoucha, Mariah Boyle, Edward J. Brooks, Juerg Brunnschweiler, Paco Bustamante, Aaron Carlisle, Diana Catarino, Stéphane Caut, Yves Cherel, Tiphaine Chouvelon, Diana Churchill, Javier Ciancio, Julien Claes, Ana Colaço, Dean L. Courtney … & Clive N. Trueman
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fixation of carbon atoms that were ultimately assimilated into muscle tissues of 5,394 sharks from 114 species, we identify globally consistent biogeographic traits...

Data from: Ensemble modelling of the potential distribution of the whale shark in the Atlantic Ocean

José C. Báez, A. Márcia Barbosa, Pedro Pascual, M. Lourdes Ramos & Francisco Abascal
This dataset reports observations of whale shark (Rhincodon typus) in the tropical and subtropical Atlantic Ocean. Data were obtained by the Spanish Institute of Oceanography (IEO) observers program, and were rescaled to the resolution of the Bio-ORACLE 2.0 variables, against which they were modelled along with presences from additional online sources. Our data include both presence and surveyed absence records – i.e., places where observers were active and did not detect whale sharks – within...

Data from: Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors

Jan Geert Hiddink, Joan Moranta, Stephen Balestrini, Marija Sciberras, Marine Cendrier, Rosie Bowyer, Michel J. Kaiser, Mattias Sköld, Patrik Jonsson, Francois Bastardie & Hilmar Hinz
Bottom-trawl fisheries are widespread and cause mortality of benthic invertebrates, which in turn may lead to a decrease in the availability of prey for target fish species. Exploitation also reduces the abundance of the fish species themselves. Modelling studies have shown that bottom trawling could lead to both increases and decreases in fish production, but so far empirical evidence to test these ideas has been very limited. We hypothesize that the effect of bottom trawling...

Data from: The potential for arms race and Red Queen coevolution in a protist host-parasite system

Lars Råberg, Elisabet Alacid, Esther Garces & Rosa Figueroa
The dynamics and consequences of host–parasite coevolution depend on the nature of host genotype-by-parasite genotype interactions (G × G) for host and parasite fitness. G × G with crossing reaction norms can yield cyclic dynamics of allele frequencies (“Red Queen” dynamics) while G × G where the variance among host genotypes differs between parasite genotypes results in selective sweeps (“arms race” dynamics). Here, we investigate the relative potential for arms race and Red Queen coevolution...

Data from: More, smaller bacteria in response to ocean's warming?

Xosé Anxelu G. Morán, Laura Alonso-Sáez, Enrique Nogueira, Hugh W. Ducklow, Natalia González, Ángel López-Urrutia, Laura Díaz-Pérez, Alejandra Calvo-Díaz, Nestor Arandia-Gorostidi & Tamara M. Huete-Stauffer
Heterotrophic bacteria play a major role in organic matter cycling in the ocean. Although the high abundances and relatively fast growth rates of coastal surface bacterioplankton make them suitable sentinels of global change, past analyses have largely overlooked this functional group. Here, time series analysis of a decade of monthly observations in temperate Atlantic coastal waters revealed strong seasonal patterns in the abundance, size and biomass of the ubiquitous flow-cytometric groups of low (LNA) and...

Data from: Atlantic bluefin tuna spawn at suboptimal temperatures for their offspring

Patricia Reglero, Aurelio Ortega, Rosa Balbín, Francisco Javier Abascal, Antonio Medina, Edurne Blanco, Fernando De La Gándara, Diego Alvarez-Berastegui, Manuel Hidalgo, Leif Rasmuson, Francisco Alemany & Øyvind Fiksen
Life-history traits such as spawning migrations and timing of reproduction are adaptations to specific environmental constraints and seasonal cycles in many organisms’ annual routines. In this study we analyze how offspring fitness constrains spawning phenology in a large migratory apex predator, the Atlantic bluefin tuna. The reproductive schedule of Atlantic bluefin tuna varies between spawning sites suggesting plasticity to local environmental conditions. Generally, temperature is considered to be the main constraint on tuna spawning phenology....

Data from: Climate and fishing steer ecosystem regeneration to uncertain economic futures

Thorsten Blenckner, Marcos Llope, Christian Möllmann, Rudi Voss, Martin F. Quaas, Michele Casini, Martin Lindegren, Carl Folke, Nils Chr. Stenseth & C. Mollmann
Overfishing of large predatory fish populations has resulted in lasting restructurings of entire marine food webs worldwide, with serious socio-economic consequences. Fortunately, some degraded ecosystems show signs of recovery. A key challenge for ecosystem management is to anticipate the degree to which recovery is possible. By applying a statistical food-web model, using the Baltic Sea as a case study, we show that under current temperature and salinity conditions, complete recovery of this heavily altered ecosystem...

Data from: Spatial dynamics and mixing of bluefin tuna in the Atlantic Ocean and Mediterranean Sea revealed using next generation sequencing

Gregory Neils Puncher, Alessia Cariani, Gregory E. Maes, Jeroen Van Houdt, Koen Herten, Rita Cannas, Naiara Rodriguez-Ezpeleta, Aitor Albaina, M. Andone Estonba, Molly Lutcavage, Alex Hanke, Jay Rooker, James S. Franks, Joseph M. Quattro, Gualtiero Basilone, Igaratza Fraile, Urtzi Laconcha, Nicolas Goñi, Ai Kimoto, A. David Macías, Francisco Alemany, Simeon Deguara, Salem W. Zgozi, Fulvio Garibaldi, Isik K. Oray … & Fausto Tinti
The Atlantic bluefin tuna is a highly migratory species emblematic of the challenges associated with shared fisheries management. In an effort to resolve the species’ stock dynamics, a genome-wide search for spatially informative single nucleotide polymorphisms (SNPs) was undertaken, by way of sequencing reduced representation libraries. An allele frequency approach to SNP discovery was used, combining the data of 555 larvae and young-of-the-year (LYOY) into pools representing major geographical areas and mapping against a newly...

Marine fish traits follow fast-slow continuum across oceans

Esther Beukhof, Romain Frelat, Laurene Pecuchet, Aurore Maureaud, Tim Spaanheden Dencker, Jón Sólmundsson, Antonio Punzón, Raul Primicerio, Manuel Hidalgo, Christian Möllmann & Martin Lindegren
A fundamental challenge in ecology is to understand why species are found where they are and predict where they are likely to occur in the future. Trait-based approaches may provide such understanding, because it is the traits and adaptations of species that determine which environments they can inhabit. It is therefore important to identify key traits that determine species distributions and investigate how these traits relate to the environment. Based on scientific bottom-trawl surveys of...

Species richness in North Atlantic fish: process concealed by pattern

Henrik Gislason, Jeremy Collie, Brian R. MacKenzie, Anders Nielsen, Maria De Fatima Borges, Teresa Bottari, Corina Chavez, Andrey V. Dolgov, Jakov Dulčić, Daniel Duplisea, Heino O. Fock, Didier Gascuel, Luís Gil De Sola, Jan Geert Hiddink, Remment Ter Hofstede, Igor Isajlović, Jónas Páll Jonasson, Ole Jørgensen, Kristján Kristinsson, Gudrun Marteinsdottir, Hicham Masski, Sanja Matić-Skoko, Mark R. Payne, Melita Peharda, Jakup Reinert … & Lilja Stefansdottir
Aim Previous analyses of marine fish species richness based on presence-absence data have shown changes with latitude and average species size, but little is known about the underlying processes. To elucidate these processes we use metabolic, neutral, and descriptive statistical models to analyse how richness responds to maximum species length, fish abundance, temperature, primary production, depth, latitude, and longitude, while accounting for differences in species catchability, sampling effort, and mesh size. Data Results from 53,382...

Data from: Persistent natural acidification drives major distribution shifts in marine benthic ecosystems

Cristina Linares, Montserrat Vidal, Miquel Canals, Diego Kersting, David Amblas, Eneko Aspillaga, Emma Cebrian, Antonio Delgado-Huertas, David Diaz, Joaquim Garrabou, Bernat Hereu, Laura Navarro, Nuria Teixido & Enric Ballesteros
Ocean acidification is one of the main stressors affecting marine ecosystems. Rare CO2 vents offer a unique opportunity to investigate the response of benthic ecosystems to acidification. However, the benthic habitats that have been investigated so far are mainly very shallow water (≤5 m depth) and, therefore, to habitats that are poorly representative of the broad range of habitats that occur on the continental shelf. Here, we show that a decrease from pH 8.1 to...

Data from: Trophic mechanisms underlying bentho-demersal community recovery in the north-east Atlantic

Nina-Larissa Arroyo, Izaskun Preciado, Lucía López-López, Isabel Muñoz & Antonio Punzón
1. Bottom trawling is considered one of the greatest and most widespread causes of anthropogenic change in shelf seas, with major and prolonged impacts in areas with a long history of exploitation by fisheries such as the North-Atlantic. Here, signs of recovery following the put into force of regulations are increasingly being reported. 2. We examined the extent to which biological diversity and functionality are restored when fishing pressure is reduced by evaluating changes in...

A king and vassals’ tale: molecular signatures of clonal integration in Posidonia oceanica under chronic light shortage

Miriam Ruocco, Laura Entrambasaguas, Emanuela Dattolo, Alfonsina Milito, Lazaro Marín-Guirao & Gabriele Procaccini
1. Under unfavourable conditions, clonal plants benefit from physiological integration among ramets, sharing resources and information. Clonal integration can buffer against environmental changes and let the plant clone work as a “macro” organism. Molecular signals that regulate this phenomenon are completely unknown in marine plants. 2. Here, we present a first comprehensive study providing insights into the metabolic role of different types of ramets (i.e., apical vs vertical) in the foundation species Posidonia oceanica. Plants...

Local-scale climatic refugia offer sanctuary for a habitat-forming species during a marine heatwave

Jana Verdura, Jorge Santamaría, Enric Ballesteros, Dan Smale, Maria Elena Cefalì, Raül Golo, Sònia De Caralt, Alba Vergés & Emma Cebrian
1. Gradual climate change and discrete extreme climatic events have driven shifts in the structure of populations and the distribution of species in many marine ecosystems. The most profound impacts of recent warming trends have been generally observed at species’ warm edges and on large conspicuous species. However, given that different species and populations exhibit different responses to warming, and that responses are highly variable at regional scales, there is a need to broaden the...

Data from: Characterization of stress coping style in Senegalese sole (Solea senegalensis) juveniles and breeders for aquaculture

Z. Ibarra-Zatarain, Elvira Fatsini, Sonia Rey, Olvido Chereguini, Ignacio Martin, Inmaculada Rasines, Carles Alcaraz & Neil Duncan
The aim of this work was to characterize stress coping styles of Senegalese sole (Solea senegalensis) juveniles and breeders and to select an operational behavioural screening test (OBST) that can be used by the aquaculture industry to classify and select between behavioural phenotypes in order to improve production indicators. A total of 61 juveniles and 59 breeders were subjected to five individual behavioural tests and two grouping tests. At the end of the individual tests,...

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Resource Types

  • Dataset
    16

Affiliations

  • Spanish Institute of Oceanography
    16
  • Technical University of Denmark
    5
  • Bangor University
    3
  • Portuguese Sea and Atmosphere Institute
    3
  • University of Hamburg
    2
  • Texas A&M University
    2
  • University of Barcelona
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  • University of Southern Mississippi
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