Search publications of the members of the Royal Belgian institute of natural Sciences
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Arguments (Ostracodes) pour une régression culminant à proximité de la limite Frasnien-Famennien, à Sinsin (bord sud du Bassin de Dinant)
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Les Ostracodes du Frasnien terminal ("Kellwasser" supérieur) de Coumiac (Montagne Noire, France)
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Ostracods and the upper Devonian mass extinction in the southern border of the Dinant Basin (Belgium)
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Ostracods from the Eifelian/Givetian boundary of the southern part of the Dinant Basin (Belgium, France)
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Les Ostracodes au passage Eifelien/Givetien à Glageon (Avesnois, France)
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Ostracod evidence for an abrupt mass extinction at the Frasnian/Famennian boundary (Devils Gate, Nevada)
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Les Ostracodes qui disparaissent avec l'événement Frasnien/Famennien au limitotype de Coumiac (Montagne Noire, France)
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Les Ostracodes survivants à l'événement F/F dans le limitotype de Coumiac (Montagne Noire, France)
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Geochemistry of the Frasnian-Famennian boundary in Belgium: mass extinction, anoxic oceans and microtektite layers, but not much iridium?
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Micronewsomites et Decoranewsomites, deux nouveaux genres d'ostracodes dévoniens
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Cosmic magnetic spherules in the Famennian of Bad Windsheim borehole (Germany): Preliminary study and implications
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Ostracodes et Sédimentologie au passage Eifelien/Givetien dans la marbrière du Pic de Bissous (Montagne Noire, France)
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Les Ostracodes survivants à l'extinction en masse du Dévonien Supérieur dans la coupe du col de Devils Gate au Nevada, U.S.A.
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Ostracods from the Frasnian/Famennian transition beds in the Lijiaping section (Hunan, southern China)
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Ostracodes et sédimentologie du Givétien à Ain Khira (Meseta nord-occidentale du Maroc)
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Ostracods Late Devonian mass extinction: The Schmidt quarry parastratotype (Kellerwald, Germany)
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Les Ostracodes du Frasnien terminal (Zone à linguiformis des Conodontes) de la coupe du col de Devils Gate (Nevada, USA)
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The recovery of the ostracod fauna after the Late Devonian mass extinction: the Devils Gate pass section example (Nevada, USA)
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Allometric relationships of ecologically important Antarctic and Arctic zooplankton and fish species
- Abstract Allometric relationships between body properties of animals are useful for a wide variety of purposes, such as estimation of biomass, growth, population structure, bioenergetic modelling and carbon flux studies. This study summarizes allometric relationships of zooplankton and nekton species that play major roles in polar marine food webs. Measurements were performed on 639 individuals of 15 species sampled during three expeditions in the Southern Ocean (winter and summer) and 2374 individuals of 14 species sampled during three expeditions in the Arctic Ocean (spring and summer). The information provided by this study fills current knowledge gaps on relationships between length and wet/dry mass of understudied animals, such as various gelatinous zooplankton, and of animals from understudied seasons and maturity stages, for example, for the krill Thysanoessa macrura and larval Euphausia superba caught in winter. Comparisons show that there is intra-specific variation in length–mass relationships of several species depending on season, e.g. for the amphipod Themisto libellula . To investigate the potential use of generalized regression models, comparisons between sexes, maturity stages or age classes were performed and are discussed, such as for the several krill species and T. libellula . Regression model comparisons on age classes of the fish E. antarctica were inconclusive about their general use. Other allometric measurements performed on carapaces, eyes, heads, telsons, tails and otoliths provided models that proved to be useful for estimating length or mass in, e.g. diet studies. In some cases, the suitability of these models may depend on species or developmental stages.
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Medieval fish remains on the Newport ship identified by ZooMS collagen peptide mass fingerprinting
- Fish represent a key economic, social and ecological group of species that humans have exploited for tens of thousands of years. However, as many fish stocks are going into decline and with little known about the anthropogenic impacts on the health of the marine ecosystem pre-Industrial Revolution, understanding historical and archaeological exploitation of fish species is key to accurately modelling these changes. Here, we explore the potential of collagen peptide mass fingerprinting (also known as Zooarchaeology by Mass Spectrometry, or ZooMS) for identifying fish remains from the Medieval (fifteenth century) Newport ship wreck (Wales, UK), and in doing so we establish a set of biomarkers we consider useful in discriminating between European fish taxa through the inclusion of over 50 reference taxa. The archaeological results identified nine distinct taxonomic groups, dominated by ling (> 40%), and a substantial amount of cod (> 20%) and hake (~ 20%). The vast majority of samples (> 70%) were identified to species level, and the inability to identify the remaining taxonomic groups with confidence using ZooMS was due to the fact that the reference collection, despite being relatively large in comparison to those presented in mammalian studies, reflects only a small proportion of fish biodiversity from this region. Although the results clearly demonstrate the potential for ZooMS as a means of fish bone identification, the sheer number of different fish species that potentially make up ichthyoarchaeological assemblages leads to obvious requirements for the analysis on much greater numbers of modern reference specimens, or the acquisition of collagen sequences.
