Search publications of the members of the Royal Belgian institute of natural Sciences
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Tussen steenontginner en steenbewerker, een gedeelde verantwoordelijkheid voor handhavingvan het bouwkundig erfgoed, vandaag en morgen
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De toepassing van natuursteen voor de bouw en de restauratie van het Justitiepaleis van Brussel
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The Advantages of Owning a Palaeolithic Dog
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Method assessment and observer variation in age estimation: A comparative analysis of the Suchey-Brooks and the İşcan methods on an archaeological medieval population
- Age-at-death estimation methods have faced challenges in their applicability to past populations. This study aims to evaluate the assessment and observer variability of the Suchey-Brooks (SB) and İşcan methods within archaeological contexts. Our sample consisted of 400 individuals from the medieval cemetery of the Dunes Abbey in Koksijde, Belgium. The skeletal remains exhibited good preservation, especially for the İşcan methods, which showed higher sensitivity to preservation conditions. Intra- and inter-observer variation were investigated using Spearman correlation coefficients, Wilcoxon paired ranks test, and Cohen's kappa test. The Spearman coefficient revealed a strong positive correlation, with a moderate to almost excellent kappa coefficient for both intra- and inter-observer error. Overall, the SB method displayed better inter-observer agreement, while the İşcan method presented better intra-observer agreement. Applying these methods to younger individuals resulted in less variability. Certain descriptive phase categories, such as phase III for the SB method and phase 3 and 4 for the İşcan methods, seemed problematic. Only 188 sufficiently preserved individuals could be scored using both the SB and the İşcan methods. They were classified into age groups, and the methods assessment were evaluated using the same statistical approach. The Spearman correlation coefficient indicated consistent age group attribution between the two methods (rho = 0.92), with a moderate to almost excellent agreement (k = 0.45; wk = 0.91). Overall, the two methods mainly differ by only one age group, except for older adults. The SB method tended to assign older age groups compared to İşcan's method, leading to effective overestimation.
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Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River
- Aim: We assessed the effect of environmental factors on the structure of periphytic ostracods communities along the river-floodplain system of the Upper Paraná River. We predict that the higher distance from Porto Primavera dam downstream would lead to higher diversity and density of the ostracods. Methods: Periphytic ostracods (associated with root systems of the floating Eichhornia spp) were sampled during November 2013 to May 2015. Three samples were collected at each sampling site (channel of the Paraná River, tributaries and lakes). Eichhornia plants were removed from the water by hand and the plants were placed in a plastic bucket. Roots were washed for the removal of ostracods, and samples were filtered through a hand net with 160 µm mesh size. Results: The faunistic survey recorded 44 ostracods species and richness estimators indicated that sampling effort appears to be suitable to reveal the diversity of ostracods in this studied area. The highest richness and density were observed in the stretch downstream of the dam in the main channel of Paraná River and in the lakes. Beta diversity was not significantly different along the longitudinal gradient downstream and higher similarity of ostracods species composition was observed in the lakes located in the stretch downstream of the dam. Conclusions: An increase in the richness and density of ostracods were recorded in the sections downstream of the Paraná River, evidencing the importance of undammed tributaries on the ostracods community. The similarity of beta diversity amongst sampling sites may be owing to permanent hydrological connectivity amongst these environments, favouring the exchange of organisms mainly through the drift of free-floating macrophytes, and owing to the passive dispersal of drought resistant eggs of ostracods. Local abiotic factors had significant effects on abundance and distribution of some ostracod species.
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European Journal of Taxonomy. A success story en pleidooi voor ondersteuning op het vlak van institutionele publicatie.
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Ecosystem services provided by a large endangered primate in a forest-savanna mosaic landscape.
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Projet de caractérisation et de divrsification de l'habitat floristique pour l'entomofaune au Jardin Botanique expérimental Jean Massart
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GBS data confirms past hybridization among congeneric chichlid species from Lake Tanganyika
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Is differential gene expression in the female brain linked to assortative amting in a mouthbrooding cichlid (Ophthalmotilapia) from Lake tanganyikda
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The hazards of oil exploitation in Africa's ancient lakes
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First Glimpse At An Enigmatic Champanzee Population in Forest Fragements of the Albert Lake Escarpment (Rafale), Ituri, Dr Congo
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Who is the reservoir of Monkeypox? Work in progress
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Investigating suspended particulate matter in coastal waters using the fractal theory
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Pick up the pieces - Harmonising and collating seabed substrate data for European Maritime Areas
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Updating Frasnian miospore zonation from the Boulonnais (Northern France) and comparison with new data from the Upper Palaeozoic cover on the Brabant Massif (Western Belgium).
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De geologie van Vlaanderen doorgrond voor ingenieurs. Paleozoicum en Mesozoicum. IE-net ingenieursvereniging
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Obernkirchener zandsteen in Nederland en Vlaanderen
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Sourcing natural stone used in the architecture of stone-poor landscapes demonstrated for northern Belgium
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Integrated mine planning leading to sustainable post-mining transition. Mining Technology technical community within the Institute of Materials, Minerals and Mining (Newcastle) 2021 conference: Legacies of mineral extraction and sustainability opportuniti
