Skip to content. | Skip to navigation

Personal tools

You are here: Home

Search results

RSS Subscribe to an always-updated RSS feed.

4466 items matching your search terms.
Filter the results.
Item type



































New items since



Sort by relevance · date (newest first) · alphabetically
Webpublished Reference The Inden Formation
Located in Library / RBINS Staff Publications 2023
Article Reference The influence of balanced and imbalanced resource supply on biodiversity - functioning relationship across ecosystems
Located in Library / RBINS Staff Publications 2016
Article Reference The Influence of Bioturbation on Iron and Sulphur Cycling in Marine Sediments: A Model Analysis
The geochemical cycles of iron and sulphur in marine sediments are strongly intertwined and give rise to a complex network of redox and precipitation reactions. Bioturbation refers to all modes of transport of particles and solutes induced by larger organisms, and in the present-day seafloor, bioturbation is one of the most important factors controlling the biogeochemical cycling of iron and sulphur. To better understand how bioturbation controls Fe and S cycling, we developed reactive transport model of a coastal sediment impacted by faunal activity. Subsequently, we performed a model sensitivity analysis, separately investigating the two different transport modes of bioturbation, i.e. bio-mixing (solid particle transport) and bio-irrigation (enhanced solute transport). This analysis reveals that bio-mixing and bio-irrigation have distinct—and largely opposing effects on both the iron and sulphur cycles. Bio-mixing enhances transport between the oxic and suboxic zones, thus promoting the reduction of oxidised species (e.g. iron oxyhydroxides) and the oxidation of reduced species (e.g. iron sulphides). Through the reoxidation of iron sulphides, bio-mixing strongly enhances the recycling of Fe and S between their reduced and oxidised states. Bio-irrigation on the other hand removes reduced solutes, i.e. ferrous iron and free sulphide, from the sediment pore water. These reduced species are then reoxidised in the overlying water and not recycled within the sediment column, which leads to a decrease in Fe and S recycling. Overall, our results demonstrate that the ecology of the macrofauna (inducing bio-mixing or bio-irrigation, or both) matters when assessing their impact on sediment geochemistry. This finding seems particularly relevant for sedimentary cycling across Cambrian transition, when benthic fauna started colonizing and reworking the seafloor.
Located in Library / No RBINS Staff publications
Inproceedings Reference The influence of Earth surface movements and human activities on the River Karun in lowland south-west Iran
Located in Library / RBINS Staff Publications
Article Reference The influence of environmental variables on freshwater rotifers of the family Brachionidae and Lecanidae in Thailand
This study investigates the influence of limnological parameters that are known to influence rotifer species richness and composition in temperate areas on two families of monogonont rotifers in a tropical area. We analysed species richness and diversity of the two families from 133 samples taken from several habitat types in Thailand. Coordinates, elevation, pH, temperature, conductivity, salinity and dissolved oxygen were measured and their effect on rotifers assessed. A total of 60 species in 5 genera was recorded from the two families. Latitude and temperature had an effect on species richness of Brachionidae. None of the variables affected species richness of Lecanidae, except habitat type, albeit not significantly. Habitat type and conductivity had an effect on species composition of the two families, whereas latitude had an effect only on species composition of Lecanidae. Species richness and composition of the two rotifer families are well documented in Thailand and no or only few additional species are expected. The limnological correlates of rotifer diversity seem to be in part comparable to and in part different from those known from temperate areas, suggesting that there may be general trends in rotifer species richness and composition across different latitudes.
Located in Library / RBINS Staff Publications 2017
Article Reference The influence of environmental variables on freshwater rotifers of the family Brachionidae and Lecanidae in Thailand
Located in Library / RBINS Staff Publications 2017
Article Reference The initial response of females towards congeneric males matches the propensity to hybridise in Ophthalmotilapia
Located in Library / RBINS Staff Publications 2022 OA
Article Reference The internal division of the Pliocene Lillo Formation: correlation between Cone Penetration Tests and lithostratigraphic type sections
Located in Library / RBINS Staff Publications 2020
Inbook Reference text/h323 The Interplay of Environmental Change, Socio-political Stress and Human Resilience at Early to Middle Bronze Age Troy
Despite the meanwhile well-developed evidence of global Holocene climate fluctuations and the correlation of such events with the transition of cultural periods it remains difficult to estimate regional environmental effects of these climate fluctuations and their impact on human populations. The complexity of ancient societies, our lack of knowledge on their perception of possible environmental problems, and its interrelation with human decision-making, challenges archaeological interpretation of a climatic impact on past societies. Stable carbon isotope data in ancient cereal grains from northern Mesopotamian sites indicate climatic fluctuation throughout the Early Bronze Age, with an abrupt increase in aridity towards the end of the Early Bronze Age, which is supported by oxygen isotopes in biogenic Lithospermae carbonate. These changes have been linked to climatic fluctuations, which are widely considered global, such as Bond Event 3 or the 4.200 cal BP event. In our study we aim to consider how far global climatic fluctuations may have affected agriculture in the Early to Middle Bronze Age Troad. We combine stable carbon and nitrogen isotope data from Troy with archaeobotanical data to consider changes in water and nutrient availability for the Early Bronze Age crops. We further consider anthracological data to reconstruct the Early Bronze Age woodland vegetation, to refine observable changes in stable isotope composition and in the crop assemblages. The results show a continuous reduction in oak and pine throughout Troy I to IV in favour for maquis components. There is indication that woodland exhaust may have started during Troy III with a consecutive use of open and alluvial habitats. The seed remains indicate a certain diversification in crop production in Troy IV with an inclusion of coastal habitats into land use, which may have been a consequence of increased aridity, a changing landscape, and erosion processes on the plateaus that must have already started at the end of Troy II. Stable carbon isotopes in barley, which indicate increased water stress in Troy IV grains add an additional support to the necessity of agricultural change starting in Troy III with the shift of fields into alluvial and in Troy IV to coastal habitats. Our data also correlate with the 4.200 BP event, and the general assumption of an increased aridity, but do rather support all-embracing reformation as an expression of human resilience than the common idea of societal collapse.
Located in Library / RBINS Staff Publications 2016
Article Reference The interpretation of pollen assemblages from medieval and post-medieval cesspits: new results from northern Belgium
Located in Library / RBINS Staff Publications 2016