Harri Hakkarainen

3.3k total citations
73 papers, 2.7k citations indexed

About

Harri Hakkarainen is a scholar working on Ecology, Ecology, Evolution, Behavior and Systematics and Nature and Landscape Conservation. According to data from OpenAlex, Harri Hakkarainen has authored 73 papers receiving a total of 2.7k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Ecology, 40 papers in Ecology, Evolution, Behavior and Systematics and 20 papers in Nature and Landscape Conservation. Recurrent topics in Harri Hakkarainen's work include Animal Ecology and Behavior Studies (35 papers), Avian ecology and behavior (34 papers) and Animal Behavior and Reproduction (30 papers). Harri Hakkarainen is often cited by papers focused on Animal Ecology and Behavior Studies (35 papers), Avian ecology and behavior (34 papers) and Animal Behavior and Reproduction (30 papers). Harri Hakkarainen collaborates with scholars based in Finland, United States and United Kingdom. Harri Hakkarainen's co-authors include Erkki Korpimäki, Jouni Sorvari, Vesa Koivunen, Esa Huhta, Petri Suorsa, Ari Nikula, Toni Laaksonen, Tapio Eeva, Heikki Helle and Markus J. Rantala and has published in prestigious journals such as Ecology, Scientific Reports and Environmental Pollution.

In The Last Decade

Harri Hakkarainen

73 papers receiving 2.5k citations

Peers

Countries citing papers authored by Harri Hakkarainen

Since Specialization

Citations

This map shows the geographic impact of Harri Hakkarainen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Harri Hakkarainen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Harri Hakkarainen more than expected).

Fields of papers citing papers by Harri Hakkarainen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Harri Hakkarainen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Harri Hakkarainen. The network helps show where Harri Hakkarainen may publish in the future.

Co-authorship network of co-authors of Harri Hakkarainen

This figure shows the co-authorship network connecting the top 25 collaborators of Harri Hakkarainen. A scholar is included among the top collaborators of Harri Hakkarainen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Harri Hakkarainen. Harri Hakkarainen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Using change trajectories to study the impacts of multi-annual habitat loss on fledgling production in an old forest specialist bird 2017 ·Scientific Reports ·(unknown), Niina Käyhkö, Harri Hakkarainen, Petri Suorsa, Esa Huhta, Samuli Helle	1
2	Carotenoid Composition of Invertebrates Consumed by Two Insectivorous Bird Species 2010 ·Journal of Chemical Ecology ·Tapio Eeva, Samuli Helle, Juha‐Pekka Salminen, Harri Hakkarainen	68
3	Local survival of pied flycatcher males and females in a pollution gradient of a Cu smelter 2009 ·Environmental Pollution ·Tapio Eeva, Harri Hakkarainen, Eugen Belskii	18
4	Survival of male Tengmalm’s owls increases with cover of old forest in their territory 2007 ·Oecologia ·Harri Hakkarainen, Erkki Korpimäki, Toni Laaksonen, Ari Nikula, Petri Suorsa	27
5	Eimeria-parasites are associated with a lowered mother's and offspring's body condition in island and mainland populations of the bank vole 2006 ·Parasitology ·Harri Hakkarainen, Esa Huhta, Esa Koskela, Tapio Mappes, Timo Soveri, Petri Suorsa	38
6	Heavy metal pollution disturbs immune response in wild ant populations 2006 ·Environmental Pollution ·Jouni Sorvari, (unknown), Markus J. Rantala, Harri Hakkarainen, Tapio Eeva	107
7	Forest clearing and sex ratio in forest-dwelling wood ant Formica aquilonia 2006 ·Die Naturwissenschaften ·Jouni Sorvari, Harri Hakkarainen	22
8	Environmental pollution has sex-dependent effects on local survival 2006 ·Biology Letters ·Tapio Eeva, Harri Hakkarainen, Toni Laaksonen, Esa Lehikoinen	19
9	Deforestation reduces nest mound size and decreases the production of sexual offspring in the wood ant Formica aquilonia 2005 ·Annales Zoologici Fennici ·Jouni Sorvari, Harri Hakkarainen	64
10	Forest fragmentation is associated with primary brood sex ratio in the treecreeper ( Certhia familiaris ) 2003 ·Proceedings of the Royal Society B Biological Sciences ·Petri Suorsa, Heikki Helle, Esa Huhta, Ari Jäntti, Ari Nikula, Harri Hakkarainen	44
11	Provisioning response to manipulation of apparent predation danger by parental Pied Flycatchers 2002 ·Ornis Fennica ·Harri Hakkarainen, (unknown), Erkki Korpimäki, Ronald C. Ydenberg	16
12	Survival of male Tengmalm's owls under temporally varying food conditions 2002 ·Oecologia ·Harri Hakkarainen, Erkki Korpimäki, Vesa Koivunen, Ron Ydenberg	35
13	Hatching asynchrony and brood reduction in Tengmalm's owl Aegolius funereus: the role of temporal and spatial variation in food abundance 2002 ·Oecologia ·Jari Valkama, Erkki Korpimäki, (unknown), Harri Hakkarainen	31
14	Experimental increase of predation risk induces breeding dispersal of Tengmalm's owl 2001 ·Oecologia ·Harri Hakkarainen, Petteri Ilmonen, Vesa Koivunen, Erkki Korpimäki	58
15	Prey depletion by the foraging of the Eurasian treecreeper, Certhia familiaris, on tree-trunk arthropods 2001 ·Oecologia ·Ari Jäntti, Teija Aho, Harri Hakkarainen, Markku Kuitunen, Jukka Suhonen	22
16	Why do territorial male Tengmalm's owls fail to obtain a mate? 1998 ·Oecologia ·Harri Hakkarainen, Erkki Korpimäki	15
17	Blood parasites and nest defense behaviour of Tengmalm's owls 1998 ·Oecologia ·Harri Hakkarainen, Petteri Ilmonen, Vesa Koivunen, Erkki Korpimäki	37
18	Environmental, parental and adaptive variation in egg size of Tengmalm's owls under fluctuating food conditions 1994 ·Oecologia ·Harri Hakkarainen, (unknown)	22
19	Does feeding effort of Tengmalm's owls reflect offspring survival prospects in cyclic food conditions? 1994 ·Oecologia ·Harri Hakkarainen, (unknown)	41
20	Kestrel hunting behaviour towards solitary and grouped Microtus agrestis and M. epiroticus. A laboratory experiment 1992 ·Annales Zoologici Fennici ·Harri Hakkarainen, Erkki Korpimäki, Tapio Mappes, (unknown)	16

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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