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Pseudosuchian thermometabolism: A review of the past two decades.
Anat Rec (Hoboken)
February 2025
Naturhistorisk Museum, Universitetet i Oslo, Norsk Center for Paleontologie, Oslo, Norway.
Pseudosuchia, one of the two main clades of Archosauria, is today only represented by some 20 extant species, the crocodilians, representing only a fraction of its extinct diversity. Extant crocodilians are ectotherms but present morphological and anatomical features usually associated with endothermy. In 2004, it was proposed that pseudosuchians were ancestrally endothermic and the features observed in extant crocodilians are the remains of this lost legacy.
View Article and Find Full Text PDFOn the function and origin of the avian renal portal shunt and its potential significance throughout evolution.
Biol Rev Camb Philos Soc
February 2025
Department of Veterinary and Biosciences, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, Merelbeke, 9820, Belgium.
All birds possess a unique venous architecture surrounding the kidneys known as the renal portal system. In veterinary medicine, this system is well known for causing a first-pass effect when medication is administered parenterally via the leg veins, that is venous blood from the leg is filtered before entering general circulation, thus possibly compromising adequate dosage. Additionally, bilateral valves are present in these veins, and it has been hypothesized that they play a crucial role in regulating flow through the kidneys to protect them against increases in blood pressure.
View Article and Find Full Text PDFForecasting Photo-Dissolution for Future Oil Spills at Sea: Effects of Oil Properties and Composition.
Environ Sci Technol
August 2024
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, United States.
Photo-dissolution, the photochemical production of water-soluble species from oil, can transfer oil-derived dissolved organic carbon (DOC) from floating surface slicks to the underlying seawater. Photo-dissolution was likely a quantitatively relevant fate process for the Macondo crude oil spilled during the 2010 spill, but the importance of photo-dissolution for other oils is poorly constrained. This study evaluated the photo-dissolution reactivities (apparent quantum yields) and modeled rates for oils with diverse physical properties and chemical compositions, including an ultra low sulfur fuel oil (ULSFO).
View Article and Find Full Text PDFA long section of serpentinized depleted mantle peridotite.
Science
August 2024
Department of Communication, University of North Dakota, Grand Forks, ND, USA.
The upper mantle is critical for our understanding of terrestrial magmatism, crust formation, and element cycling between Earth's solid interior, hydrosphere, atmosphere, and biosphere. Mantle composition and evolution have been primarily inferred by surface sampling and indirect methods. We recovered a long (1268-meter) section of serpentinized abyssal mantle peridotite interleaved with thin gabbroic intrusions.
View Article and Find Full Text PDFLarge shallow lake response to anthropogenic stressors and climate change: Missing macroinvertebrate recovery after oligotrophication (Lake Balaton, East-Central Europe).
Sci Total Environ
October 2024
Department of Environmental and Landscape Geography, Eötvös Loránd University, Pázmány Péter str. 1/C, Budapest H-1117, Hungary; University of Public Service, Faculty of Water Sciences, Department of Water Supply and Sewerage, Bajcsy-Zsilinszky utca 12-14, Baja H-6500, Hungary; Department of Environmental Science, Sapientia Hungarian University of Transylvania, Calea Turzii 4, 400193 Cluj-Napoca, Romania.
East-Central Europe's largest shallow lake, Balaton, experienced strong eutrophication in the 1970-80s, followed by water quality improvement and oligotrophication by 2010 CE. Recently however, repeated cyanobacterial blooms occurred and warned that internal P-recycling can act similarly to external P load, therefore we need a better understanding of past water level (WL) and trophic changes in the lake. In this study we discuss the last 500-yr trophic, WL and habitat changes of the lake using paleoecological (chironomids, pollen) and geochemical (sediment chlorophyll, TOC, TS, TN, C/H ratio, major and trace element) methods.
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