Denis Vallan

959 total citations
13 papers, 463 citations indexed

About

Denis Vallan is a scholar working on Global and Planetary Change, Ecology, Evolution, Behavior and Systematics and Social Psychology. According to data from OpenAlex, Denis Vallan has authored 13 papers receiving a total of 463 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Global and Planetary Change, 8 papers in Ecology, Evolution, Behavior and Systematics and 3 papers in Social Psychology. Recurrent topics in Denis Vallan's work include Amphibian and Reptile Biology (12 papers), Animal Behavior and Reproduction (5 papers) and Species Distribution and Climate Change (3 papers). Denis Vallan is often cited by papers focused on Amphibian and Reptile Biology (12 papers), Animal Behavior and Reproduction (5 papers) and Species Distribution and Climate Change (3 papers). Denis Vallan collaborates with scholars based in Switzerland, Germany and Italy. Denis Vallan's co-authors include Franco Andreone, Miguel Vences, Frank Glaw, Neil A. Cox, Christopher J. Raxworthy, John E. Cadle, Simon N. Stuart, Ronald A. Nussbaum, Rainer Dolch and Herilala Randriamahazo and has published in prestigious journals such as Conservation Biology, Biological Conservation and Journal of Tropical Ecology.

In The Last Decade

Denis Vallan

13 papers receiving 407 citations

Peers

Countries citing papers authored by Denis Vallan

Since Specialization

Citations

This map shows the geographic impact of Denis Vallan'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 Denis Vallan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Denis Vallan more than expected).

Fields of papers citing papers by Denis Vallan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Denis Vallan. 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 Denis Vallan. The network helps show where Denis Vallan may publish in the future.

Co-authorship network of co-authors of Denis Vallan

This figure shows the co-authorship network connecting the top 25 collaborators of Denis Vallan. A scholar is included among the top collaborators of Denis Vallan 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 Denis Vallan. Denis Vallan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

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13 of 13 papers shown

#	Title	Journal	Authors	Indexed citations
1	Beautiful bright belly: A distinctive new microhylid frog (Amphibia: Stumpffia) from eastern Madagascar	Zootaxa	Frank Glaw, Denis Vallan et al.	5
2	Forceps delivery of a new treefrog species of the genus Boophis from eastern Madagascar (Amphibia: Mantellidae)	Amphibia-Reptilia	Frank Glaw, Denis Vallan et al.	8
3	Update of the Global Amphibian Assessment for Madagascar in light of species discoveries, nomenclature changes, and new field information		Franco Andreone, Neil A. Cox et al.	21
4	The calls of Plethodontohyla inguinalis from eastern Madagascar (Amphibia, Microhylidae)	Biodiversity Heritage Library (Smithsonian Institution)	Denis Vallan, Frank Glaw et al.	2
5	Species Review of Amphibian Extinction Risks in Madagascar: Conclusions from the Global Amphibian Assessment	Conservation Biology	Franco Andreone, John E. Cadle et al.	118
6	Does selective wood exploitation affect amphibian diversity? The case of An'Ala, a tropical rainforest in eastern Madagascar	Oryx	Denis Vallan, Franco Andreone et al.	29
7	Two new species of the Boophis mandraka complex (Anura, Mantellidae) from the Andasibe region in eastern Madagascar	Amphibia-Reptilia	Denis Vallan, Miguel Vences et al.	8
8	Effects of anthropogenic environmental changes on amphibian diversity in the rain forests of eastern Madagascar	Journal of Tropical Ecology	Denis Vallan	95
9	Revision of the Boophis majori group (Amphibia: Mantellidae) from Madagascar, with descriptions of five new species	Zoological Journal of the Linnean Society	Frank Glaw, Miguel Vences et al.	26
10	Influence of forest fragmentation on amphibian diversity in the nature reserve of Ambohitantely, highland Madagascar	Biological Conservation	Denis Vallan	123
11	A new species of the genus Stumpffia (Amphibia: Anura: Microhylidae) from a small forest remnant of the central high plateau of Madagascar	Revue suisse de zoologie	Denis Vallan	10
12	A NEW MANTIDACTYLUS FROM SOUTH-EASTERN MADAGASCAR, WITH A REVIEW OF MANTIDACTYLUS PERACCAE (RANIDAE: MANTELLINAE)	Herpetological Journal	Franco Andreone, Frank Glaw et al.	12
13	A new treefrog species of the genus Boophis (Anura: Ranidae: Rhacophorinae) with dermal fringes from Madagascar	Amphibia-Reptilia	Denis Vallan, Frank Glaw et al.	6

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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