Results 181 to 190 of about 1,895,989 (237)
Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II
The Anatomical Record, EarlyView.Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo +4 more
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The Anatomical Record, EarlyView.Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira +2 more
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The Anatomical Record, EarlyView.Abstract Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic ...
Lísie Vitória Soares Damke +4 more
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Scaling and ecomorphology of lagomorph body shape and appendicular skeleton
The Anatomical Record, EarlyView.Abstract Body shape is one of the most prominent features of phenotypic variation. Yet, mammalian body shapes are poorly quantified and the underlying components contributing to its diversity and its relationship to other skeletal components are rarely tested.
Nia Brice, Coby Huizenga, Chris J. Law
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Beaver herbivory on aquatic plants
Oecologia, 2006Herbivores have strong impacts on marine and terrestrial plant communities, but their impact is less well studied in benthic freshwater systems. For example, North American beavers (Castor canadensis) eat both woody and non-woody plants and focus almost exclusively on the latter in summer months, yet their impacts on non-woody plants are generally ...
Parker, John D. +2 more
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2008
Aquatic systems receive the bulk of their nutrient supply from stream inflow. In stream communities, and also in lakes with a stream outflow, the export of nutrients in outgoing stream water is a major factor in nutrient budgets of aquatic communities.
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Aquatic systems receive the bulk of their nutrient supply from stream inflow. In stream communities, and also in lakes with a stream outflow, the export of nutrients in outgoing stream water is a major factor in nutrient budgets of aquatic communities.
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Some effects of polyphenols on aquatic plants: I. Toxicity of phenols in aquatic plants
Bulletin of Environmental Contamination and Toxicology, 1981Physiological parameters such as cytoplasmic streaming and motility are used to analyze the effects of chemically different phenolic compounds. Test organisms included: Cyclotella cryptica, Dunaliella salina, Chlamydomonas reinhardii strain 137, Lemna minor and Euglena graclis.
D I, Stom, R, Roth
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Taxon, 1974
ASTON, H. I. Aquatic plants of Australia. A guide to the identification of the aquatic ferns and flowering plants of Australia, both native and naturalized. Illustrations chiefly by the author. Melbourne University Press I973 [p.o. Box 278, Carlton, South Carlton, Victoria 3053, Australia], 368 pp., I38 figs., 8i maps, I52 x 231/2 cm, buckram, publ.
H. C. D. de Wit, H. I. Aston
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ASTON, H. I. Aquatic plants of Australia. A guide to the identification of the aquatic ferns and flowering plants of Australia, both native and naturalized. Illustrations chiefly by the author. Melbourne University Press I973 [p.o. Box 278, Carlton, South Carlton, Victoria 3053, Australia], 368 pp., I38 figs., 8i maps, I52 x 231/2 cm, buckram, publ.
H. C. D. de Wit, H. I. Aston
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Phosphorus in primary aquatic plants
Water Research, 1973Abstract As with other organisms, phosphorus is an essential element for aquatic plants. It is a component of molecules such as the nucleic acids and adenosine triphosphate (ATP) involved in the vital processes of enzyme synthesis and energy transfer and its compounds play a basic role in the mechanisms of photosynthesis by which these plants act as ...
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