A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

i10-index

The number of the author's publications that received at least 10 links each.

https://scholar.googleblog.com/2011/11/google-scholar-citations-open-to-all.html

m-index

The researcher's m-index is numerically equal to the ratio of his h-index to the number of years that have passed since the first publication.

https://harzing.com/publications/white-papers/reflections-on-the-h-index

o-index

The geometric mean of the h-index and the number of citations of the most cited article of the scientist.

https://arxiv.org/abs/1511.01545

g-index

For a given set of articles, sorted in descending order of the number of citations that these articles received, the g-index is the largest number such that the g most cited articles received (in total) at least g² citations.

https://doi.org/10.1007/s11192-006-0144-7

w-index

If w articles of a researcher have at least 10w citations each and other publications are less than 10(w+1) citations, then the researcher's w-index is equal to w.

https://doi.org/10.1002/asi.21276

Top-100

Fields of science

	1 2 3 4
Ecology	Ecology, 4, 28.57% Ecology 4 publications, 28.57%
Nature and Landscape Conservation	Nature and Landscape Conservation, 4, 28.57% Nature and Landscape Conservation 4 publications, 28.57%
Agricultural and Biological Sciences (miscellaneous)	Agricultural and Biological Sciences (miscellaneous), 4, 28.57% Agricultural and Biological Sciences (miscellaneous) 4 publications, 28.57%
Earth and Planetary Sciences (miscellaneous)	Earth and Planetary Sciences (miscellaneous), 3, 21.43% Earth and Planetary Sciences (miscellaneous) 3 publications, 21.43%
Animal Science and Zoology	Animal Science and Zoology, 2, 14.29% Animal Science and Zoology 2 publications, 14.29%
Aquatic Science	Aquatic Science, 2, 14.29% Aquatic Science 2 publications, 14.29%
General Engineering	General Engineering, 1, 7.14% General Engineering 1 publication, 7.14%
Ecology, Evolution, Behavior and Systematics	Ecology, Evolution, Behavior and Systematics, 1, 7.14% Ecology, Evolution, Behavior and Systematics 1 publication, 7.14%
General Veterinary	General Veterinary, 1, 7.14% General Veterinary 1 publication, 7.14%
Ecological Modeling	Ecological Modeling, 1, 7.14% Ecological Modeling 1 publication, 7.14%
	1 2 3 4

Journals

	1 2 3
Nature Conservation Research	Nature Conservation Research, 3, 21.43% Nature Conservation Research 3 publications, 21.43%
Diversity	Diversity, 2, 14.29% Diversity 2 publications, 14.29%
KnE Life Sciences	KnE Life Sciences, 2, 14.29% KnE Life Sciences 2 publications, 14.29%
Nusantara Bioscience	Nusantara Bioscience, 2, 14.29% Nusantara Bioscience 2 publications, 14.29%
IOP Conference Series: Earth and Environmental Science	IOP Conference Series: Earth and Environmental Science, 1, 7.14% IOP Conference Series: Earth and Environmental Science 1 publication, 7.14%
Forests	Forests, 1, 7.14% Forests 1 publication, 7.14%
Insects	Insects, 1, 7.14% Insects 1 publication, 7.14%
Revista MVZ Cordoba	Revista MVZ Cordoba, 1, 7.14% Revista MVZ Cordoba 1 publication, 7.14%
Copeia	Copeia, 1, 7.14% Copeia 1 publication, 7.14%
	1 2 3

Citing journals

	1 2 3 4 5 6 7 8 9
Diversity	Diversity, 9, 19.15% Diversity 9 citations, 19.15%
Biosystems Diversity	Biosystems Diversity, 4, 8.51% Biosystems Diversity 4 citations, 8.51%
Ecological Genetics	Ecological Genetics, 3, 6.38% Ecological Genetics 3 citations, 6.38%
Biodiversity Data Journal	Biodiversity Data Journal, 3, 6.38% Biodiversity Data Journal 3 citations, 6.38%
Animals	Animals, 3, 6.38% Animals 3 citations, 6.38%
Journal of Helminthology	Journal of Helminthology, 3, 6.38% Journal of Helminthology 3 citations, 6.38%
Journal of Applied Ichthyology	Journal of Applied Ichthyology, 2, 4.26% Journal of Applied Ichthyology 2 citations, 4.26%
Herpetozoa	Herpetozoa, 2, 4.26% Herpetozoa 2 citations, 4.26%
South of Russia: Ecology, Development	South of Russia: Ecology, Development, 1, 2.13% South of Russia: Ecology, Development 1 citation, 2.13%
IOP Conference Series: Earth and Environmental Science	IOP Conference Series: Earth and Environmental Science, 1, 2.13% IOP Conference Series: Earth and Environmental Science 1 citation, 2.13%
Russian Journal of Biological Invasions	Russian Journal of Biological Invasions, 1, 2.13% Russian Journal of Biological Invasions 1 citation, 2.13%
Parasitology	Parasitology, 1, 2.13% Parasitology 1 citation, 2.13%
Parasitology Research	Parasitology Research, 1, 2.13% Parasitology Research 1 citation, 2.13%
Inland Water Biology	Inland Water Biology, 1, 2.13% Inland Water Biology 1 citation, 2.13%
Zoological Studies	Zoological Studies, 1, 2.13% Zoological Studies 1 citation, 2.13%
Parasites and Vectors	Parasites and Vectors, 1, 2.13% Parasites and Vectors 1 citation, 2.13%
Herpetologica	Herpetologica, 1, 2.13% Herpetologica 1 citation, 2.13%
Biological Rhythm Research	Biological Rhythm Research, 1, 2.13% Biological Rhythm Research 1 citation, 2.13%
Biology Bulletin	Biology Bulletin, 1, 2.13% Biology Bulletin 1 citation, 2.13%
Fishes	Fishes, 1, 2.13% Fishes 1 citation, 2.13%
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology	Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, 1, 2.13% Journal of Experimental Zoology Part A: Ecological and Integrative Physiology 1 citation, 2.13%
Journal of Zoological Systematics and Evolutionary Research	Journal of Zoological Systematics and Evolutionary Research, 1, 2.13% Journal of Zoological Systematics and Evolutionary Research 1 citation, 2.13%
Биология внутренних вод	Биология внутренних вод, 1, 2.13% Биология внутренних вод 1 citation, 2.13%
Proceedings of the Zoological Institute RAS	Proceedings of the Zoological Institute RAS, 1, 2.13% Proceedings of the Zoological Institute RAS 1 citation, 2.13%
Caucasiana	Caucasiana, 1, 2.13% Caucasiana 1 citation, 2.13%
Russian Journal of Veterinary Pathology	Russian Journal of Veterinary Pathology, 1, 2.13% Russian Journal of Veterinary Pathology 1 citation, 2.13%
	1 2 3 4 5 6 7 8 9

Publishers

	1 2 3 4
MDPI	MDPI, 4, 28.57% MDPI 4 publications, 28.57%
Fund for Support and Development of Protected Areas	Fund for Support and Development of Protected Areas, 3, 21.43% Fund for Support and Development of Protected Areas 3 publications, 21.43%
Knowledge E DMCC	Knowledge E DMCC, 2, 14.29% Knowledge E DMCC 2 publications, 14.29%
UNS Solo	UNS Solo, 2, 14.29% UNS Solo 2 publications, 14.29%
Universidad de Cordoba	Universidad de Cordoba, 1, 7.14% Universidad de Cordoba 1 publication, 7.14%
IOP Publishing	IOP Publishing, 1, 7.14% IOP Publishing 1 publication, 7.14%
American Society of Ichthyologists and Herpetologists	American Society of Ichthyologists and Herpetologists, 1, 7.14% American Society of Ichthyologists and Herpetologists 1 publication, 7.14%
	1 2 3 4

Organizations from articles

	2 4 6 8 10
Institute of Ecology of Volga River Basin RAS	Institute of Ecology of Volga River Basin RAS, 10, 27.03% Institute of Ecology of Volga River Basin RAS 10 publications, 27.03%
Samara Federal Research Center of the Russian Academy of Sciences	Samara Federal Research Center of the Russian Academy of Sciences, 5, 13.51% Samara Federal Research Center of the Russian Academy of Sciences 5 publications, 13.51%
Organization not defined	Organization not defined, 4, 10.81% Organization not defined 4 publications, 10.81%
Penza State University	Penza State University, 4, 10.81% Penza State University 4 publications, 10.81%
Institute of Cytology of the Russian Academy of Sciences	Institute of Cytology of the Russian Academy of Sciences, 2, 5.41% Institute of Cytology of the Russian Academy of Sciences 2 publications, 5.41%
Dagestan State University	Dagestan State University, 2, 5.41% Dagestan State University 2 publications, 5.41%
Mari State University	Mari State University, 2, 5.41% Mari State University 2 publications, 5.41%
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences	A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, 1, 2.7% A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences 1 publication, 2.7%
Zoological Institute of the Russian Academy of Sciences	Zoological Institute of the Russian Academy of Sciences, 1, 2.7% Zoological Institute of the Russian Academy of Sciences 1 publication, 2.7%
Caspian Institute of Biological Resources DSC RAS	Caspian Institute of Biological Resources DSC RAS, 1, 2.7% Caspian Institute of Biological Resources DSC RAS 1 publication, 2.7%
Kazan Federal University	Kazan Federal University, 1, 2.7% Kazan Federal University 1 publication, 2.7%
Saint Petersburg State University	Saint Petersburg State University, 1, 2.7% Saint Petersburg State University 1 publication, 2.7%
Tambov State University named after G.R. Derzhavin	Tambov State University named after G.R. Derzhavin, 1, 2.7% Tambov State University named after G.R. Derzhavin 1 publication, 2.7%
Kaluga State University named after K.E. Tsiolkovski	Kaluga State University named after K.E. Tsiolkovski, 1, 2.7% Kaluga State University named after K.E. Tsiolkovski 1 publication, 2.7%
Dagestan Scientific Center of the Russian Academy of Sciences	Dagestan Scientific Center of the Russian Academy of Sciences, 1, 2.7% Dagestan Scientific Center of the Russian Academy of Sciences 1 publication, 2.7%
	2 4 6 8 10

Countries from articles

	2 4 6 8 10 12
Russia	Russia, 11, 64.71% Russia 11 publications, 64.71%
Country not defined	Country not defined, 6, 35.29% Country not defined 6 publications, 35.29%
	2 4 6 8 10 12

Citing organizations

	1 2 3 4 5 6 7 8 9
Organization not defined	Organization not defined, 9, 13.24% Organization not defined 9 citations, 13.24%
A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences	A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, 6, 8.82% A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences 6 citations, 8.82%
Penza State University	Penza State University, 6, 8.82% Penza State University 6 citations, 8.82%
Institute of Cytology of the Russian Academy of Sciences	Institute of Cytology of the Russian Academy of Sciences, 5, 7.35% Institute of Cytology of the Russian Academy of Sciences 5 citations, 7.35%
Institute of Ecology of Volga River Basin RAS	Institute of Ecology of Volga River Basin RAS, 5, 7.35% Institute of Ecology of Volga River Basin RAS 5 citations, 7.35%
Samara Federal Research Center of the Russian Academy of Sciences	Samara Federal Research Center of the Russian Academy of Sciences, 5, 7.35% Samara Federal Research Center of the Russian Academy of Sciences 5 citations, 7.35%
Dagestan State University	Dagestan State University, 3, 4.41% Dagestan State University 3 citations, 4.41%
Mari State University	Mari State University, 3, 4.41% Mari State University 3 citations, 4.41%
Kazan Federal University	Kazan Federal University, 2, 2.94% Kazan Federal University 2 citations, 2.94%
University of Tyumen	University of Tyumen, 2, 2.94% University of Tyumen 2 citations, 2.94%
Russian State Agrarian University - Moscow Timiryazev Agricultural Academy	Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, 2, 2.94% Russian State Agrarian University - Moscow Timiryazev Agricultural Academy 2 citations, 2.94%
Belgorod State University	Belgorod State University, 2, 2.94% Belgorod State University 2 citations, 2.94%
Zoological Institute of the Russian Academy of Sciences	Zoological Institute of the Russian Academy of Sciences, 1, 1.47% Zoological Institute of the Russian Academy of Sciences 1 citation, 1.47%
Tomsk State University	Tomsk State University, 1, 1.47% Tomsk State University 1 citation, 1.47%
Saint Petersburg State University	Saint Petersburg State University, 1, 1.47% Saint Petersburg State University 1 citation, 1.47%
Don State Technical University	Don State Technical University, 1, 1.47% Don State Technical University 1 citation, 1.47%
Khoja Akhmet Yassawi International Kazakh-Turkish University	Khoja Akhmet Yassawi International Kazakh-Turkish University, 1, 1.47% Khoja Akhmet Yassawi International Kazakh-Turkish University 1 citation, 1.47%
Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences	Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences, 1, 1.47% Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences 1 citation, 1.47%
Perm State Humanitarian Pedagogical University	Perm State Humanitarian Pedagogical University, 1, 1.47% Perm State Humanitarian Pedagogical University 1 citation, 1.47%
Institute of Zoology Republic of Kazakhstan	Institute of Zoology Republic of Kazakhstan, 1, 1.47% Institute of Zoology Republic of Kazakhstan 1 citation, 1.47%
Ben-Gurion University of the Negev	Ben-Gurion University of the Negev, 1, 1.47% Ben-Gurion University of the Negev 1 citation, 1.47%
University of Copenhagen	University of Copenhagen, 1, 1.47% University of Copenhagen 1 citation, 1.47%
Charles University	Charles University, 1, 1.47% Charles University 1 citation, 1.47%
Kongju National University	Kongju National University, 1, 1.47% Kongju National University 1 citation, 1.47%
Centre for Ecological Research	Centre for Ecological Research, 1, 1.47% Centre for Ecological Research 1 citation, 1.47%
Széchenyi István University	Széchenyi István University, 1, 1.47% Széchenyi István University 1 citation, 1.47%
Xinjiang University	Xinjiang University, 1, 1.47% Xinjiang University 1 citation, 1.47%
Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences	Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 1, 1.47% Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences 1 citation, 1.47%
Chengdu Institute of Biology, Chinese Academy of Sciences	Chengdu Institute of Biology, Chinese Academy of Sciences, 1, 1.47% Chengdu Institute of Biology, Chinese Academy of Sciences 1 citation, 1.47%
Comenius University Bratislava	Comenius University Bratislava, 1, 1.47% Comenius University Bratislava 1 citation, 1.47%
	1 2 3 4 5 6 7 8 9

Citing countries

	5 10 15 20
Russia	Russia, 20, 43.48% Russia 20 citations, 43.48%
Country not defined	Country not defined, 5, 10.87% Country not defined 5 citations, 10.87%
Czech Republic	Czech Republic, 4, 8.7% Czech Republic 4 citations, 8.7%
Germany	Germany, 2, 4.35% Germany 2 citations, 4.35%
Ukraine	Ukraine, 2, 4.35% Ukraine 2 citations, 4.35%
Israel	Israel, 2, 4.35% Israel 2 citations, 4.35%
Latvia	Latvia, 2, 4.35% Latvia 2 citations, 4.35%
France	France, 1, 2.17% France 1 citation, 2.17%
Kazakhstan	Kazakhstan, 1, 2.17% Kazakhstan 1 citation, 2.17%
USA	USA, 1, 2.17% USA 1 citation, 2.17%
China	China, 1, 2.17% China 1 citation, 2.17%
Hungary	Hungary, 1, 2.17% Hungary 1 citation, 2.17%
Denmark	Denmark, 1, 2.17% Denmark 1 citation, 2.17%
Lithuania	Lithuania, 1, 2.17% Lithuania 1 citation, 2.17%
Republic of Korea	Republic of Korea, 1, 2.17% Republic of Korea 1 citation, 2.17%
Slovakia	Slovakia, 1, 2.17% Slovakia 1 citation, 2.17%
	5 10 15 20

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4 common articles

Ermakov Oleg

PhD in Biological/biomedical sciences, Associate Professor

Penza State University

47 publications, 321 citations

h-index: 11

Research interests

Molecular phylogenetics

Zoology of vertebrates