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Article Reference Hypoponera eduardi (Forel, 1894) (Hymenoptera: Formicidae) on extensive green roofs in the Province of Antwerp: a new species for the Belgian ant fauna
From 2019 until 2021, we investigated extensive green roofs in Flanders (Belgium) for their arthropod communities. On two different roofs we found, amongst the collected specimens, a species new for the Belgian ant fauna: Hypoponera eduardi (Forel, 1894). The presence of multiple worker ants belonging to this species indicates that it has formed a colony on at least one roof. Apparently, the warm and dry conditions that arise on extensive green roofs as a consequence of the shallow substrate layers lead to suitable habitat conditions for this species.
Located in Library / RBINS Staff Publications 2022
Inproceedings Reference Ibeceten, a window into the anuran diversity of the African Cretaceous
The Cretaceous is a key period for anurans, as several clades, such as the aquatic Pipidae and the speciose Neobatrachia (~96 % of extant taxa) underwent a rapid and vast diversification. This event is considered to have taken place on Gondwana, as it was breaking apart into several continents, including South America and Africa. Fossiliferous sites from this period from both continents are key to understand how this diversification unravelled. Unfortunately, few cretaceous sites with anuran remains are known from Africa. Among them is the Ibeceten site from the Coniacian-Santonian of Niger. Located in the South-East of Niger, this site has been the subject of several field campaigns during the 1970s by the Muséum national d’Histoire naturelle, Paris. The peculiar pipid Pachycentrata taqueti was described in 1998. However, most of the material remained undescribed. Here we present a thorough study of the anuran material from Ibeceten, which leads to the recognition of a new taxon. New anatomical studies suggest the presence of at least six taxa, although numerous bone fragments remain unattributable. This makes Ibeceten the most diverse anuran fauna of the African fossil record. Half of the identified taxa belong to Pipimorpha (total-group of Pipidae), while another one is an ornamented anuran that resembles the cretaceous neobatrachians from South America. Among the pipids, one new taxon should be erected. Phylogenetic analysis of pipimorphs places two Ibeceten taxa among the pipids. The presence of more than one pipid shows that the clade was already diversified during the early Late Cretaceous, and that the clade might have emerged in Africa, before spreading to South America. In addition, the putative presence of a neobatrachian shows that the clade was already widespread in South America and West Africa.
Located in Library / RBINS Staff Publications 2021
Techreport Reference ICES VIEWPOINT: Scrubber discharge water from ships – risks to the marine environment and recom-mendations to reduce impacts
New global standards on sulphur content in marine fuels have led to an increasing number of ships installing exhaust gas cleaning systems, also known as scrubbers, to reduce air emissions of sulphur oxides. Ships equipped with a scrubber can continue to use heavy fuel oil, resulting in significant discharge of acidified water containing several contaminants, such as heavy metals, persistent organic pollutants (POPs; mainly polycyclic aromatic hydrocarbons), and nitrogen compounds.The simplest and most common type of scrubber system, the open-loop scrubber, directly discharges the contaminated water in to the sea. The use of scrubber systems by ships is an emerging global problem and an additional pressure on the marine environment. The substances found in scrubber discharge water can cause acute effects on marine biota and may have further impacts, through bioaccumulation, acidification, and eutrophication, on the structure and functioning of marine ecosystems.The number of ships with installed scrubber systems is increasing, but legislation on scrubber discharge is lagging, inconsistent between countries, and often insufficient to protect the environment. ICES recommends the use of cleaner low-sulphur fuels, such as marine gas oil, to eliminate scrubber use and associated impacts on the marine environment.Until this is possible, ICES proposes a set of measures to mitigate scrubber impacts
Located in Library / RBINS Staff Publications 2020
Article Reference Identification des phases minérales par DRX et EDS dans les processus d'altération des pyrites et des marcassites : applications aux collections de Préhistoire, de Paléontologie et de Minéralogie de l’IRSNB aux briquets
Located in Library / RBINS Staff Publications 2016
Unpublished Reference Identification of Funding Priorities. Document OTSOPA 22/02/02 presented by Belgium and France at the Meeting of the Working Group on Operational, Technical and Scientific Questions Concerning Counter Pollution Activities (OTSOPA)
Located in Library / RBINS Staff Publications 2022 OA
Inproceedings Reference Identifying EU-listed Aquatic Invasive Species by DNA-barcoding using currently available sequence data
Located in Library / RBINS Staff Publications 2022 OA
Article Reference Iguanian lizards (Acrodonta and Pleurodonta) from the earliest Eocene (MP7) of Dormaal, Belgium: The first stages of these iconic reptiles in Europe
We here report on iguanians (both new and the previous record) from the earliest Eocene (MP 7) of the Dormaal locality in Belgium, from the time of the warmest global climates of the past 66 million years. Today iguanians are distributed mainly in the New World (Pleurodonta) and Old World (Acrodonta), having complicated biogeographic histories. Both lineages co-existed in Dormaal 56 Ma. Iguanians here document the presence of thermophilic faunas during greenhouse conditions in the northern mid-latitudes (above 50° north, the latitude of southern England). The complete maxilla of the agamid Tinosaurus europeocaenus is described and figured for the first time, being distinctive and furnishing a number of diagnostic characters. The dentary coronoid process of this species is also observed for the first time. Our morphological analysis supports the previous observation that Tinosaurus is similar to Leiolepis, but also differs from it by several distinguishing features. Some jaw character states present in T. europeocaenus are shared with the Indian T. indicus, Chinese T. doumuensis, and American Tinosaurus sp., but several differences among them are observed. Besides the wellknown Geiseltaliellus, we here erect and describe a new pleurodontan taxon. The new taxon is represented by a maxilla with a unique and peculiar tooth crown morphology: the central cusp is bifurcated, markedly split into two distinct and wellseparated “prongs.” This morphology likely indicates a high specialization on feeding sources. This might cause a higher extinction risk relative to generalists, because terrestrial ecosystems in Europe changed substantially during the Paleogene.
Located in Library / RBINS Staff Publications 2023
Article Reference Illustrated and commented checklist of the longhorn beetles of Kuzikus Wildlife Reserve in the Kalahari, Namibia (Coleoptera: Cerambycidae)
Located in Library / RBINS Staff Publications 2023
Article Reference IMPACT OF ANTS ON THE GROWTH AND PRODUCTIVITY OF LAMTO SAVANNA PERENNIAL GRASSES (COTE D’IVOIRE)
Lamto savanna soil known to have low agronomic value paradoxically has one of the highest grasses biomass productions in the world. During recent surveys, ant nest were encountered under some grass tufts and it as suggested that ants are able to influence the availability of resources for these grasses and also other organisms. An interaction is suspected between these savanna grass tufts and their associated ants. Three grasses species Andropogon schirensis, Hyparrhenia diplandra and Loudetia simplex were chosen to inventory ant communities associated with grass tufts and to assess the influence of ant communities on growth and productivity of perennial grasses. Three study sites were chosen and each was subdivided in two experimental plots of 2500 m². By systematic digging out method we were collected 38 ant species under grass tufts. They belong to 19 genera and 7 sub-families. Lamto herbaceous stratum was dominated by Camponotus acvapinensis. Diameter measures of grass tufts base at ground level, have allowed establishing the link between the size of ant nest and grass tufts size. Pearson coefficient r ranged no correlation between the size of ants nest and grass tufts size. The association rate with ants of one of the grasses Hyparrhenia diplandra was greater than for two other grasses studied Andropogon schirensis and Loudetia simplex (54.208 % versus 49.433 %, and 38.496 % respectively). Parameters such as grasses height, diameter (at ground level, and 10 cm above), dry biomass and seeds production were assessed. The results showed that Hyparrhenia diplandra with ant nest recorded the best results of growth and productivity. Association with ants nest is beneficial for the growth and productivity of Lamto perennial grasses.
Located in Library / RBINS Staff Publications 2018
Article Reference Impact of chemical fertilizers on diversity and abundance of soil-litter arthropod communities in coffee and banana plantations in southern Rwanda
Few studies explored effects of chemical fertilizers on diversity and abundance of soillitter arthropods in the tropics. To fill this gap, a study focussed on the abundance of soil-litter arthropods and selected soil physicochemical properties in coffee plantations treated with chemical fertilizers and in plantations of coffee and banana treated with organic fertilizers and organic mulches in southern Rwanda. Each land use was replicated three times. Soil-litter arthropods were collected using pitfall traps and hand collection. They were identified to the family level using dichotomous keys. Soil have been collected using auger and taken to the laboratory for the analysis of soil pH, soil organic carbon, total nitrogen, phosphorus, and cation exchange capacity. Findings indicated a total of 12,945 individuals distributed into 3 classes, 16 orders, 50 families and 92 morphospecies, with higher abundance and diversity in coffee plantations treated with organic fertilizers and organic mulches. Collected soil-litter arthropods were mainly classified in the class Insecta, dominated in numbers by ants (Hymenoptera: Formicidae), while Coleoptera and Hemiptera had more families. However, soil under coffee plantations treated with organic fertilizers and organic mulches was acidic compared with the soil under coffee plantations treated with inorganic fertilizers and banana plantations treated with organic fertilizers and organic mulches. The relationships between soil-litter arthropods and soil physicochemical properties suggest that soillitter arthropods respond to the land use independently from soil physicochemical properties. We recommend further studies in coffee and other crop plantations in other regions of Rwanda to verify the findings of this study.
Located in Library / RBINS Staff Publications 2023