Recursos de colección

Digital.CSIC (162.855 recursos)

Repositorio institucional del Consejo Superior de Investigaciones Científicas. Digital.CSIC es un depósito de documentos digitales, cuyo objetivo es organizar, archivar, preservar y difundir en modo de acceso abierto la producción intelectual resultante de la actividad investigadora del CSIC.

(IMEDEA) Artículos post-print

Mostrando recursos 1 - 20 de 79

  1. Experimental Assessment of Temperature Thresholds for Arctic Phytoplankton Communities

    Coello Camba, Alexandra; Agustí, Àlvar G.N.; Vaqué, Dolors; Holding, Johnna M.; Arrieta López de Uralde, Jesús M.; Wassmann, Paul F.; Duarte, Carlos M.
    13 pages, 9 figures, 2 tables

  2. How relevant are recreational fisheries? Motivation and activity of resident and tourist anglers in Majorca

    Morales-Nin, Beatriz; Cardona, Federico; Maynou, Francesc; Grau, Antoni Maria
    5 pages, 3 tables

  3. Polymorphic microsatellite markers for the critically endangered Balearic shearwater, Puffinus mauretanicus

    González, Elena G.; Genovart, Meritxell; Oro, Daniel; Zardoya, Rafael; Juste, Javier
    Ten novel polymorphic microsatellite loci were isolated and characterized from the Balearic shearwater (Puffinus mauretanicus), a critically endangered seabird. The developed loci revealed a relatively low number of alleles per locus, as well as low levels of polymorphism (HO = 0.377 ± 0.241). One of the loci appeared to be W-linked. All polymorphic loci were successfully amplified in its closely related species, the Yelkouan shearwater (Puffinus yelkouan). These microsatellite markers would be useful for assessing population structure in the Balearic shearwater and the possible hybridization process between both shearwaters species

  4. Amphi-Atlantic distribution of the subterranean amphipod family Metacrangonyctidae (Crustacea, Gammaridea)

    Jaume, Damià; Christenson, K.
    Members of the strictly stygobiont, continental subterranean amphipod family Metacrangonyctidae are reported for the first time outside the Old World. Two new species of Metacrangonyx are described from two widely separated localities in the Dominican Republic (Hispaniola), one facing the Caribbean and the other the Atlantic ocean. The discovery of metacrangonyctids in the western Atlantic suggests that they are an ancient subterranean lineage tied to the shores of the Tethys belt, and thus weakens previous biogeographic arguments raised to favour their separate and independent family status with respect to the Hadziidae. The discovery in the Mediterranean of marine populations of...

  5. Topographic enhancement of long waves generated by an idealized moving pressure system

    Orfila, Alejandro; Balle, Salvador; Simarro, Gonzalo
    9 pages, 7 figures.

  6. On the temporal memory of coastal upwelling off NW Africa

    Benazzouz, Aïssa; Pelegrí, Josep Lluís; Demarcq, Hervé; Machín, Francisco; Mason, Evan; Orbi, A.; Peña-Izquierdo, Jesús; Soumia, Mordane
    25 pages, 16 figures, supporting Information

  7. On the temporal memory of coastal upwelling off NW Africa

    Benazzouz, Aïssa; Pelegrí, Josep Lluís; Demarcq, Hervé; Machín, Francisco; Mason, Evan; Orbi, A.; Peña-Izquierdo, Jesús; Soumia, Mordane
    25 pages, 16 figures, supporting Information

  8. Bacterial assemblage structure and carbon metabolism along a productivity gradient in the NE Atlantic Ocean

    Alonso-Sáez, Laura; Arístegui, Javier; Pinhassi, Jarone; Gómez-Consarnau, Laura; González, José M.; Vaqué, Dolors; Agustí, Susana; Gasol, Josep M.
    11 pages, 4 figures, 3 tables

  9. The magnitude of global marine species diversity

    Appeltans, Ward; Jaume, Damià; Macpherson, Enrique
    Appeltans, Ward ... et al.

  10. The use of energy dispersive X-ray spectroscopy to detect strontium marks in fish otoliths

    Morales-Nin, Beatriz; Fortuño Alós, José Manuel; Pérez-Mayol, Silvia; Grau, Amàlia
    4 pages, 2 figures, 1 table

  11. Alexandrium minutum resting cyst distribution dynamics in a confined site

    Anglès, Silvia; Jordi, Antoni; Garcés, Esther; Basterretxea, Gotzon; Palanques, Albert
    Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 12 pages, 12 figures, 1 table

  12. An assessment of karstic submarine groundwater and associated nutrient discharge to a Mediterranean coastal area (Balearic Islands, Spain) using radium isotopes

    García-Solsona, Ester; García-Orellana, Jordi; Masqué, Pere; Garcés, Esther; Radakovitch, O.; Mayer, A.; Estradé, S.; Basterretxea, Gotzon
    19 pages, 6 figures, 3 tables

  13. Sex-specific mortality of European shags after the Prestige oil spill: Demographic implications for the recovery of colonies

    Martínez-Abraín, Alejandro; Velando, Alberto; Oro, Daniel; Genovart, Meritxell; Gerique, Cati; Bartolomé, Miguel Angel; Villuendas, Elena; Sarzo, Blanca
    Oil spills are extreme environmental perturbations (i.e. ecological catastrophes) affecting marine food webs and especially top predators, in which effects are likely amplified. As such, seabirds suffer from direct mortality and food depletion, with potentially important consequences for the population growth rate and probability of extinction. However, little is known about the effects of sex-skewed mortality (due to sex spatio-temporal differences in at-sea distribution) in seabird population dynamics. We analyzed the mortality of European shags Phalacrocorax aristotelis after the Prestige oil spill and its effects on breeding colonies in Galicia (southwest North Atlantic). Most adults found dead were females (85%)....

  14. Seasonal changes in brood sex composition in Audouin's Gulls

    Genovart, Meritxell; Oro, Daniel; Ruiz, Xavier; Griffiths, Richard; Monaghan, Pat; Nager, Ruedi G.
    We examined seasonal variation in the hatching sex ratio of Audouin's Gull (Larus audouinii). This species is sexually size dimorphic (males are 20% larger than females at fledging); it has a modal clutch of three eggs, which vary in size (the third egg is the smallest) and hatch asynchronously. These sex, egg size, and hatching patterns generate substantial within-brood differences in chick size that interact with the food provisioning of the parents to influence chick survival. Parental provisioning capacity depends on both parental quality and environmental conditions, both of which are known to decline with season. Consequently, the optimal brood...

  15. Offspring sex ratios in subcolonies of Audouin's gull, Larus audouinii, with differential breeding performance

    Genovart, Meritxell; Jover, Lluís; Ruiz, Xavier; Oro, Daniel
    At the Ebro River delta colony in the western Mediterranean Sea, Audouin's gull, Larus audouinii, breeds in discrete aggregations called subcolonies, which showed strong differences in breeding parameters such as egg volume or breeding success. Egg parameters (such as size of both eggs and clutches) are strongly influenced by food availability. As all subcolonies are in the same area, differences in egg parameters might reflect different individuals' foraging efficiency. We measured mean clutch volumes in different subcolonies and chose those subcolonies that showed the greatest differences in this measure, which should indicate differences in parental body condition. Between these subcolonies...

  16. Morphometric similarities between central and peripheral populations of the European Shag Phalacrocorax aristotelis

    Martínez-Abraín, Alejandro; Oro, Daniel; Velando, Alberto; Genovart, Meritxell; Gerique, Cati; Bartolomé, Miguel Angel; Sarzo, Blanca; Villuendas, Elena
    We compared morphometrics and discriminant functions for sexing European Shags Phalacrocorax aristotelis in a central (British) population and a peripheral (northwestern Iberia) population within its distribution range, to account for structural differences between populations and sexes. Overall, British shags were structurally larger than Iberian shags, except in their head and bill length. This north-south cline could be attributable to higher food availability or lower ambient temperatures at higher latitudes. Furthermore, Iberian male shags were structurally larger than females for all variables considered, except for bill length, which was similar for both sexes, as in the British population. This suggests that...

  17. Interference competition in a threatened seabird community: A paradox for a successful conservation

    Oro, Daniel; Pérez-Rodríguez, Antón; Martínez-Vilalta, Albert; Bertolero, Albert; Vidal, Francesc; Genovart, Meritxell
    It is often assumed that conservation actions targeting a threatened community (e.g. habitat protection) will result in similar benefits for all species. However, complex interactions between species, such as interference competition, may result in displacement of subordinate, vulnerable species. We analysed here the spatio-temporal population dynamics of a threatened seabird community since the protection in the 1980s of several breeding sites at the Ebro Delta, western Mediterranean, Spain during 1980-2007. Competition for the most suitable patches was governed by body size, with smaller species avoiding associations with larger, dominant species. We tested whether the density increase of the larger species...

  18. Influence of density dependence on predator-prey seabird interactions at large spatio-temporal scales.

    Oro, Daniel; Oro, Daniel; Martínez-Abraín, Alejandro; Paracuellos, Mariano; Nevado, Juan Carlos; Genovart, Meritxell
    Theoretical investigations of competitive dynamics have noted that numbers of predator and prey influence each other. However, few empirical studies have demonstrated how a life-history trait of the prey (such as fecundity) can be affected simultaneously by its own density and the density of predators. For instance, density dependence can reduce fecundity with increasing number of prey, while inverse density dependence or Allee effects may occur especially when the prey is a social organism. Here we analysed an intraguild predator-prey system of two seabird species at a large spatio-temporal scale. As expected, we found that fecundity of prey was negatively...

  19. Genetic and morphological differentiation between the two largest breeding colonies of Audouin's Gull Larus audouinii

    Genovart, Meritxell; Oro, Daniel; Bonhomme, François
    We assessed the genetic and morphological differences between the two largest breeding colonies of Audouin's Gull Larus audouinii, an endemic seabird species of the Mediterranean region. The two colonies comprise c. 75% of the total world population and are 655 km apart. The Ebro Delta colony was formed recently and, after dramatic growth mainly due to high rates of both immigration and reproductive success, is now the largest in the world (more than 60% of the total population). The Chafarinas Islands support an ancient colony with relatively little fluctuation in breeding numbers. The two colonies also differ greatly in environmental...

  20. Exploiting uncertain ecological fieldwork data with multi-event capture-recapture modelling: An example with bird sex assignment

    Genovart, Meritxell; Pradel, Roger; Oro, Daniel
    Sex plays a crucial role in evolutionary life histories. However, the inclusion of sex in demographic analysis may be a challenge in fieldwork, particularly in monomorphic species. Although behavioural data may help us to sex individuals in the field, this kind of data is unlikely to be error free and is usually discarded. Here we propose a multi-event capture-recapture model that enables us to exploit uncertain field observations regarding the sex of individuals based on behavioural or morphological criteria. The multi-event capture-recapture model allows us to account for sex uncertainty not restricting our ability to estimate the parameters of interest....

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.