Results 21 to 30 of about 30,031 (216)

Periodic Biotope spaces

open access: yesMohyla Mathematical Journal, 2018
Summary: Biotope spaces were introduced by \textit{E. Marczewski} and \textit{H. Steinhaus} [Colloq. Math. 6, 319--327 (1958; Zbl 0089.03502)] for the needs of mathematical biology, namely the study of ecosystems. Biotope distance is defined on the set of all subsets of some finite set \(X\). The distance between any subsets \(A_1\) and \(A_2\) of \(X\)
Vozniuk, Oksana   +2 more
openaire   +4 more sources

To the knowledge of the genus Andrena Fabricius, 1775 (Hymenoptera: Apoidea: Andrenidae) of Azerbaijan [PDF]

open access: yesКавказский энтомологический бюллетень, 2017
The annotated list of 56 species of bees from 15 subgenera of the genus Andrena Fabricius, 1775 is given. Andrena illyrica Warncke, 1975 and A. alfkenella Perkins, 1914 are newly recorded from Azerbaijan. For each species the data on its trophical links,
Kh.A. Aliyev   +3 more
doaj   +1 more source

Food resources and trophic relationships of brown, rainbow trout and european grayling in different habitats of Shypit river of the Transcarpathian region

open access: yesRibogospodarsʹka Nauka Ukraïni, 2016
Purpose. To study food resources, feeding conditions and trophic relationships of the brown trout (Salmo trutta morpha fario), rainbow trout (Oncorhynchus mykiss), and European grayling (Thymallus thymallus) in a Transcarpatioan river.
S. Kruzhylina   +2 more
doaj   +1 more source

Nesting features of the red squirrel (Sciurus vulgaris) in conditions of Kamianets-Podilskyi

open access: yesTheriologia Ukrainica, 2020
Research on the biotopic distribution, abundance, and specific nesting features of the European red squirrel (Sciurus vulgaris)was carried out from October 2016 until May 2017 in the entire area of Kamianets-Podilskiy (Khmelnitskiy Oblast, Ukraine).
Mykola Маtvieiev, Olena Buchatska
doaj   +1 more source

Mineral Component Part of Litters in the Bog Birch Forests: Storage Conditions and Relationship with Stand Productivity [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2010
Strongly decomposed, moderately decomposed, rhizomatous, peaty, peat and рeatified litters develop on the gradient from tall-grass to sphagnum-litter (dead ground cover) birch forest types, objectively related to certain forest biotopes. Litter thickness
Tamara T. Efremova   +3 more
doaj  

Biodiversity of the Satanivska Dacha tract, a UNESCO World Heritage site (Ukraine)

open access: yesGeo&Bio, 2022
The Satanivska Dacha tract in Khmelnytskyi Oblast, Ukraine, is unique in that Fagus sylvatica L. grows here at the edge of its geographic range. In 2017, the forest community was included in the trans-European World Heritage site ‘Primeval beech forests ...
Lyudmila Lyubinska   +4 more
doaj   +1 more source

Presentability of the Utrish Nature Reserve's benthic communities for the North Caucasian Black Sea Coast

open access: yesNature Conservation Research: Заповедная наука, 2018
An assessment of the presentability of the biotopes and benthic communities of the northwestern part of the Utrish Nature Reserve marine area for the Caucasian Black Sea coast has been conducted.
Galina A. Kolyuchkina   +3 more
doaj   +1 more source

MONITORING OF THE BIODIVERSITY OF LAND VERTEBRATE ANIMALS IN THE TERRITORY OF THE APANASENKOVSKY REGION OF STAVROPOL KRAI

open access: yesВестник Северо-Кавказского федерального университета, 2022
Article contains data on number, a ball assessment of a look, a role in biocenosis the land vertebrate animals, the habitats given about the area and distribution on territories of objects of fauna, and also data on the types included in regional and ...
Konstantin V. Kharin, Andrey A. Likhovid
doaj  

Structure of helminth fauna in Apodemus uralensis (Pallas, 1771) from natural and anthropized ecosystems of the Republic of Moldova

open access: yesActa et Commentationes: Ştiinţe Exacte şi ale Naturii, 2022
The taxonomic structure consists of 3 classes, 10 families, 12 genera and 13 species, of which 6 parasitic species belong to the Cestoda class (Skrjabinotaenia lobata, Catenotaenia cricetorum, Hydatigera taeniaeformis, Hydatigera taeniaeformis, Taenia ...
Oleg Chihai   +7 more
doaj   +1 more source

Spatial and temporal structure of the spider community in the clay semi-desert of western Kazakhstan [PDF]

open access: yes, 2011
The spatial and temporal structure of spider communities was studied in the clay semi-desert of the north-western Caspian Lowland, western Kazakhstan (49°23' N, 46°47' E).
Piterkina, Tatyana V.
core   +2 more sources

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