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Found 1396 materials
Maro et al. (2008) Can the developmental conditions of tadpoles Bufo bufo...?
Attempt to understand the ontogenetic strategies of the common toads and a hypothesis about the mechanism of their switching. Pdf of the article here. Maro A. N., Shabanova A. V., Shabanov D. A. Can the developmental conditions of Bufo bufo tadpoles determine the rates of post‑metamorphic growth and maturation of …
VІ “Biology: from Molecules to the Biosphere”
The first informational letter about the VI International Conference of Young Scientists “Biology: from Molecule to Biosphere”. In my view, previous such conferences were quite decent. I invite young scientists to participate!
Wandering Eyes across the Entire Sky. Column in KomputerraOnline #22
Why do people fail to notice how blatantly they are lied to, how they are manipulated? Why does this not repel them? Where does such an inability for critical thinking come from?
Educational Model: Photosynthetic Pigments of Plants
The model explains the relationship between plant pigments and the composition of photosynthetically active radiation
Educational Model: Engelmann’s Experiment
The model illustrates the well-known experiment by Theodor Engelmann, conducted in the late 19th century
Educational Model: Effect of Heat Quantity on Development of Poikilothermic Organisms
The model explains the concept of effective temperatures
Bondareva, Shabanov (2011) Comparison of Erythrocyte Size and Shape...
In general, I consider it wrong to add myself as a co-author to student theses. But in this case I made an exception to the general rule, as I consider this case nontrivial. Unfortunately, time passes and we still cannot find frogs with similarly small erythrocytes for more detailed study...
Bondareva et al. (2010) Do size effects of cells influence... ?
Article written together with two female students. The work with erythrocytes, initiated by this article, led to an unexpected result, reflected in our theses with Bondareva from 2011. Bondareva A. A., Makhnij T. I., Shabanov D. A. Do size effects of cells of diploid and triploid fish affect...
Shabanov (2009) Why dioecious organisms outcompete cross‑fertilizing hermaphrodites
To understand the specifics of green frog reproduction, a classification is needed that delineates the main types of population reproduction characteristic for animals and explains the reasons for transitions from one type of reproduction to another. Here an attempt is made (to which I hope to return) to ...
Usova (2010) Determining Natural Mortality of Sexually Mature Water Frogs
An important paper for understanding the population ecology of frogs. Frogs are by no means precocious creatures... Usova E. E. Determining the natural mortality of sexually mature water frogs (Pelophylax esculentus complex; Amphibia, Ranidae) using skeletochronology // Visnyk of V. N. Karazin Kharkiv National University. Series: Biology. ...
Kravchenko, Shabanov (2008) Possible pathways of transformation of population systems
The latest version of the “mandala” (mandala – a highly symbolic graphic object of complex structure used as a theme for meditation) with possible transformation pathways of the GPS of green frogs. Its PDF version is available here. Kravchenko M. A., Shabanov D. A. Possible pathways of population transformation...
Shabanov et al. (2009) Which green frogs inhabit the Kharkiv region?
Relevant for our group today is the justification of the terminology used in the study of green frogs. In this article we proposed the term GPS (hemiclonal population system) and named the North-Donetsk Center of Green Frog Diversity. Pdf of the article is here. Shabanov D. A., Korshunov O. ...
Usova, Shabanov (2009) On the optimization of the methodology for retrospective assessment of body size dynamics...
Justification of the methodology for studying the growth rates of green frogs, which our group currently uses. The age determination method has become more advanced since then, but it has not yet been described in detail. Usova E. E., Shabanov D. A. On the optimization of the methodology for retrospective …
Kravchenko, Shabanov (2010) Levels of biodiversity of the Pelophylax esculentus complex
Theses containing ideas that, I hope, we will further develop. Unfortunately, in this publication everything is very concise and lacks (due to space constraints) the argumentation that would be appropriate here. Kravchenko M. A., Shabanov D. A. Levels of biodiversity of the Pelophylax esculentus complex // Biodiversity and ...
Kravchenko et al. (2011) Study of the stability of hemiclonal population systems...
A joint article with mathematicians. Studying the GPS model allowed us to draw interesting, in our view, conclusions regarding the stability of biosystems. The article proposes an interpretation of the concept "stability" that is applicable both in mathematics and in ecology. Kravchenko M. A., Shabanov ...
Kravchenko, Shabanov (2010) Modeling transformations of hemiclonal population systems...
The article that is fundamental to our work with M.K., which contains a description of all the relationships reflected in the green frog GPSS model we use, is essential. Although breaking through the formulas presented in this article is not easy, it seems to me that they provide a sufficiently …
Educational Model: Allen’s Rule
The model explains the zoogeographic Allen’s rule.
Educational Model: Bergmann’s Rule
The model explains the zoogeographic Bergmann’s rule.
Korshunov (2010) Ecological patterns of distribution of the Pelophylax esculentus complex... (Abstract)
The first (the second belongs to M.A. Kravchenko) dissertation, defended by a member of our working group on frog topics A.V. Korshunov, examines the ecological patterns of distribution of the Pelophylax esculentus complex in habitats of the upper flow basin of the Seversky Donets River. Abstract of the dissertation on …
Shabanov et al. (2006) Study of population systems of green frogs in Kharkiv region
Although the article presented here retains some interest, at least for its authors, the terminology requires correction. Ideas about the possible pathways of change in population systems have been refined, and certain concepts and even species names have changed. In particular, the term "...