Results 31 to 40 of about 233,936 (357)
Ukrainian Botanical Journal, 2021 Muscari botryoides (L.) Mill. s. l. (Asparagaceae s. l. / Hyacinthaceae s. str.) is a taxonomically complicated species (or a species aggregate) with a high level of intraspecific polymorphism.
Boichuk S.V., Budzhak V.V.
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Stable isotopes reveal differences in diet among reed bunting subspecies that vary in bill size [PDF]
, 2016 Reed bunting Emberiza schoeniclus subspecies vary considerably in bill size and shape and seem to be at an early stage of speciation, in which bill might be indirectly causing reproductive isolation.
de Oliveira Gordinho, Luís +5 more
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Variability and Taxonomic Status of Siberian Population of Alpine Sculpin Cottus poecilopus Complex (Scorpaeniformes: Cottidae) [PDF]
Журнал Сибирского федерального университета: Серия Биология, 2013 The main goal of investigation is the analysis of ecological and geographical variability of morphological characters of alpine sculpin Cottus poecilopus complex in the Siberian rivers – Lena, Ob, Amur for identification of their taxonomic status.
Bakhtiar E. Bogdanov +2 more
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The Discrimination of Species and Subspecies [PDF]
Science, 1897 n ...
Allen, J. A., Roosevelt, T.
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The Anatomical Record, EarlyView.Abstract Invasive gray squirrels (Sciurus carolinensis) have replaced the native red squirrel (Sciurus vulgaris) across much of Great Britain over the last century. Several factors have been proposed to underlie this replacement, but here we investigated the potential for dietary competition in which gray squirrels have better feeding performance than ...
Philip G. Cox, Peter J. Watson
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DiversityIn this study, we investigate the phylogeographic patterns of Dolichophis species in the Aegean region, aiming to elucidate their genetic diversity and putative historical colonisation routes through mitochondrial and nuclear DNA data.
Adam Javorčík +11 more
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A revision of Calyptochloa C.E.Hubb. (Poaceae), with two new species and a new subspecies [PDF]
, 2012 Thompson, E.J. & Simon, B.K. (2012). A revision of Calyptochloa C.E.Hubb. (Poaceae), with two new species and a new subspecies. Austrobaileya 8(4): 634–652. Two new species of Calyptochloa C.E.Hubb. (Calyptochloa cylindrosperma E.J.Thomps.
Simon, Bryan, Thompson, John
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What is a tree in the mediterranean basin hotspot? A critical analysis [PDF]
, 2019 Background: Tree species represent 20% of the vascular plant species worldwide and they play a crucial role in the global functioning of the biosphere. The Mediterranean Basin is one of the 36 world biodiversity hotspots, and it is estimated that forests
Arroyo Marín, Juan +7 more
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The Anatomical Record, EarlyView.Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc +26 more
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Historical ostriches in the Libyan Desert, with ecological and taxonomic considerations
Natural History SciencesMany historical records extend the known range of the African ostrich Struthio camelus to include almost the entire state territory of Libya. This significant expansion augments the spatial potentialities to reintroduce captive-bred progeny of the ...
Arnd Schreiber
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