10 Result(s)
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Rienk H. Smittenberg
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Article
Open AccessModes of carbon fixation in an arsenic and CO2-rich shallow hydrothermal ecosystem
The seafloor sediments of Spathi Bay, Milos Island, Greece, are part of the largest arsenic-CO2-rich shallow submarine hydrothermal ecosystem on Earth. Here, white and brown deposits cap chemically distinct sedim...
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Lipid Biomarkers as Organic Geochemical Proxies for the Paleoenvironmental Reconstruction of Estuarine Environments
Estuarine sediments provide a valuable record of changing environmental conditions over time, although deciphering this record can be confounded by dramatic changes in sediment deposition and resuspension, and...
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Open AccessGDGT distribution in a stratified lake and implications for the application of TEX86 in paleoenvironmental reconstructions
We investigated the relationship between distributions of GDGTs, GDGT-based proxies and environmental factors in a stratified lake in northwestern Norway. More than 90% of isoGDGTs were produced at the bottom ...
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Open AccessFennoscandian freshwater control on Greenland hydroclimate shifts at the onset of the Younger Dryas
Sources and timing of freshwater forcing relative to hydroclimate shifts recorded in Greenland ice cores at the onset of Younger Dryas, ∼12,800 years ago, remain speculative. Here we show that progressive Fenn...
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Rocks create nitrogen hotspots and N:P heterogeneity by funnelling rain
We postulated that soil nutrient heterogeneity arises not only through physical and biological processes in the soil, but also through emergent rocks diverting precipitation containing nutrients to the surroun...
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Microbial cell-envelope fragments and the formation of soil organic matter: a case study from a glacier forefield
Genesis of soil organic matter (SOM) during pedogenesis is still a matter of controversy in soil science. Recently, it was hypothesized that microbial cell-envelope fragments contribute significantly to SOM fo...
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Diatom-inferred late Pleistocene and Holocene palaeolimnological changes in the Ioannina basin, northwest Greece
The character and impact of climate change since the last glacial maximum (LGM) in the eastern Mediterranean region remain poorly understood. Here, two new diatom records from the Ioannina basin in northwest G...
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Bacterial, Archaeal and Fungal Succession in the Forefield of a Receding Glacier
Glacier forefield chronosequences, initially composed of barren substrate after glacier retreat, are ideal locations to study primary microbial colonization and succession in a natural environment. We characte...
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Southward movement of the Pacific intertropical convergence zone AD 1400–1850
Tropical rainfall patterns control the subsistence lifestyle of more than one billion people. Seasonal changes in these rainfall patterns are associated with changes in the position of the intertropical conver...
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Open AccessA physico-chemical survey of inland lakes and saline ponds: Christmas Island (Kiritimati) and Washington (Teraina) Islands, Republic of Kiribati
The equatorial Pacific Ocean atoll islands of Kiritimati and Teraina encompass great physical, chemical and biological variability within extreme lacustrine environments. Surveys of lake chemistry and sediment...
