Results 31 to 40 of about 333,258 (303)

The taxlist package: managing plant taxonomic lists in R

open access: yesBiodiversity Data Journal, 2018
Taxonomic lists are crucial elements of vegetation-plot databases and provide the links between original entries, reference taxon views and different taxon concepts.
Miguel Alvarez, Federico Luebert
doaj   +3 more sources

Neoteny of the European plane tree [PDF]

open access: yesArchives of Biological Sciences, 2012
The neoteny of 64-day-old European plane tree autovegetative progeny is described, starting from the fact that sexual maturity in the juvenile stage of tree development is a rare and significant process by which the period of synthesis of new lower ...
Ocokoljić Mirjana   +3 more
doaj   +1 more source

Rates of agonism among female primates: a cross-taxon perspective [PDF]

open access: yes, 2013
Agonism is common in group-living animals, shaping dominance relationships and ultimately impacting individual tness. Rates of agonism vary considerably among taxa, however, and explaining this variation has been central in ecological models of female ...
Altmann   +131 more
core   +1 more source

Pseudobankesia keersmaekersi sp. n., a new species from Greece (Lepidoptera, Psychidae, Taleporiinae)

open access: yesNota Lepidopterologica, 2017
Pseudobankesia keersmaekersi sp. n. (Lepidoptera, Psychidae, Taleporiinae) is described from Greece and compared with its likely close relatives Pseudobankesia arahova Stengel, 1990 and Pseudobankesia darwinii Stengel, 1990.
Wilfried R. Arnscheid, Hans Henderickx
doaj   +3 more sources

Is species diversity of various crop "pest taxa" proportionate to efforts paid to their research? A scientometric analysis in the Czech Republic - short note

open access: yesPlant Protection Science, 2015
Taxonomical bias for the intensity of research in natural sciences is well documented but less data exists for crop protection, weed and phytopathology sciences.
Václav STEJSKAL, Alois HONĚK
doaj   +1 more source

Pterodactylus scolopaciceps Meyer, 1860 (Pterosauria, Pterodactyloidea) from the Upper Jurassic of Bavaria, Germany:the problem of Cryptic Pterosaur Taxa in early ontogeny [PDF]

open access: yes, 2014
The taxonomy of the Late Jurassic pterodactyloid pterosaur Pterodactylus scolopaciceps Meyer, 1860 from the Solnhofen Limestone Formation of Bavaria, Germany is reviewed. Its nomenclatural history is long and complex, having been synonymised with both P.
Martill, David M., Vidovic, Steven U.
core   +5 more sources

Winter grafting of oaks Quercus L.

open access: yesHorticultural Science, 2006
In the years 1999-2004 the propagation technology of winter grafting was studied in five oak taxa: Quercus frainetto, Q. macranthera, Q. pubescens ssp. anatolica, Q. virgiliana and Q. robur Fastigiata.
J. Obdržálek, J. Jílková
doaj   +1 more source

On a Non-Discrete Concept of Prokaryotic Species

open access: yesMicroorganisms, 2020
The taxonomic concept of species has received continuous attention. A microbial species as a discrete box contains a limited number of highly similar microorganisms assigned to that taxon, following a polyphasic approach.
Juan M. Gonzalez   +3 more
doaj   +1 more source

Current taxonomic composition of European genebank material documented in EURISCO [PDF]

open access: yes, 2010
Taxonomy plays an essential role in genebank documentation. It is often the first level at which users search material, and it determines the protocols used in the management of collections.
Hintum, T.J.L., van, Knupffer, H.
core   +3 more sources

Identifying hybridizing taxa within the Daphnia longispina species complex: a comparison of genetic methods and phenotypic approaches [PDF]

open access: yes, 2010
Daphnia galeata Sars, D. longispina O. F. Muller and D. cucullata Sars (Crustacea: Cladocera) are closely related species which often produce interspecific hybrids in natural populations.
Dlouha, S.   +5 more
core   +2 more sources

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