Alexander Haas

4.7k total citations · 1 hit paper
96 papers, 3.8k citations indexed

About

Alexander Haas is a scholar working on Global and Planetary Change, Ecology, Evolution, Behavior and Systematics and Nature and Landscape Conservation. According to data from OpenAlex, Alexander Haas has authored 96 papers receiving a total of 3.8k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Global and Planetary Change, 37 papers in Ecology, Evolution, Behavior and Systematics and 25 papers in Nature and Landscape Conservation. Recurrent topics in Alexander Haas's work include Amphibian and Reptile Biology (69 papers), Animal Behavior and Reproduction (20 papers) and Turtle Biology and Conservation (16 papers). Alexander Haas is often cited by papers focused on Amphibian and Reptile Biology (69 papers), Animal Behavior and Reproduction (20 papers) and Turtle Biology and Conservation (16 papers). Alexander Haas collaborates with scholars based in Germany, United States and Malaysia. Alexander Haas's co-authors include Rafael O. de Sá, Robert C. Drewes, Célio F. B. Haddad, Raoul H. Bain, Ward C. Wheeler, John D. Lynch, Stephen C. Donnellan, Alan Channing, Ronald A. Nussbaum and Jonathan A. Campbell and has published in prestigious journals such as Proceedings of the National Academy of Sciences, SHILAP Revista de lepidopterología and Scientific Reports.

In The Last Decade

Alexander Haas

90 papers receiving 3.5k citations

Hit Papers

THE AMPHIBIAN TREE OF LIFE 2006 2026 2012 2019 2006 500 1000 1.5k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. THE AMPHIBIAN TREE OF LIFE
    2006 1.7k citations Alexander Haas et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Alexander Haas Germany 26 2.9k 1.4k 980 844 748 96 3.8k
Luis A. Coloma Ecuador 24 2.5k 0.9× 1.2k 0.8× 761 0.8× 572 0.7× 1.4k 1.9× 72 3.9k
Jing Che China 31 1.9k 0.7× 755 0.5× 354 0.4× 1.3k 1.6× 1.0k 1.4× 155 3.1k
Ben J. Evans Canada 32 985 0.3× 686 0.5× 236 0.2× 1.3k 1.5× 470 0.6× 97 2.9k
Katharina C. Wollenberg Valero United States 21 1.3k 0.4× 763 0.5× 263 0.3× 621 0.7× 563 0.8× 55 2.0k
James P. Bogart Canada 35 1.5k 0.5× 1.1k 0.8× 583 0.6× 2.1k 2.5× 358 0.5× 114 3.7k
Hobart M. Smith United States 24 2.3k 0.8× 1.3k 0.9× 1.1k 1.1× 766 0.9× 626 0.8× 281 3.7k
Ronald M. Bonett United States 24 1.3k 0.5× 704 0.5× 469 0.5× 771 0.9× 461 0.6× 55 2.6k
Ylenia Chiari United States 21 929 0.3× 593 0.4× 517 0.5× 1.1k 1.3× 386 0.5× 59 2.6k
Diego San Mauro Spain 21 904 0.3× 479 0.3× 398 0.4× 623 0.7× 174 0.2× 38 1.9k
Wei‐Guo Du China 31 1.8k 0.6× 1.6k 1.1× 1.1k 1.1× 420 0.5× 724 1.0× 163 3.1k

Countries citing papers authored by Alexander Haas

Since Specialization
Citations

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

Fields of papers citing papers by Alexander Haas

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alexander Haas

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

All Works

20 of 20 papers shown
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Haas, Alexander, et al.. (2024). The skull morphology of the Komodo dragon, Varanus komodoensis (Reptilia, Squamata, Varanidae) — a digital-dissection study. SHILAP Revista de lepidopterología. 8(2). 219–245. 2 indexed citations
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Scheu, Andreas M., Matthias R. Hastall, Thomas Zerback, et al.. (2022). Titelei/Inhaltsverzeichnis. Studies in Communication and Media. 11(1). I–II. 1 indexed citations
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Dias, Pedro Henrique dos Santos, Tiago Leite Pezzuti, Florencia Vera Candioti, et al.. (2022). The missing piece of the puzzle: larval morphology of Xenohyla truncata (Anura: Hylidae: Dendropsophini) and its implication to the evolution of Dendropsophini tadpoles. Zoomorphology. 142(1). 111–126. 5 indexed citations
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Candioti, Florencia Vera, Pedro Henrique dos Santos Dias, Jodi J. L. Rowley, et al.. (2021). Anatomical features of the phytotelma dwelling, egg‐eating, fanged tadpoles of Rhacophorus vampyrus (Anura: Rhacophoridae). Journal of Morphology. 282(5). 769–778. 9 indexed citations
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Haas, Alexander, et al.. (2021). Anomalies in the vertebral column and ilio-sacral articulation of some anuran amphibians. 57(1). 53–64. 3 indexed citations
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Kleinteich, Thomas, et al.. (2020). Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations. Ecology and Evolution. 10(20). 11467–11487. 16 indexed citations
10.
Karunarathna, Suranjan, Parinya Pawangkhanant, Anslem de Silva, et al.. (2020). A little frog leaps a long way: compounded colonizations of the Indian Subcontinent discovered in the tiny Oriental frog genus Microhyla (Amphibia: Microhylidae). PeerJ. 8. e9411–e9411. 36 indexed citations
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Das, Indraneil, et al.. (2017). A Field Guide to the frogs of Gunung Gading National Park Sarawak (Borneo). Unimas Institutional Repository (Universiti Malaysia Sarawak).
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Das, Indraneil, et al.. (2017). A field guide to the amphibians of Gunung Gading National Park Sarawak (Borneo). Unimas Institutional Repository (Universiti Malaysia Sarawak). 1 indexed citations
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Kleinteich, Thomas, Julia Herzen, Felix Beckmann, Masafumi Matsui, & Alexander Haas. (2013). Anatomy, function, and evolution of jaw and hyobranchial muscles in cryptobranchoid salamander larvae. Journal of Morphology. 275(2). 230–246. 9 indexed citations
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Mitgutsch, Christian, Lennart Olsson, & Alexander Haas. (2009). Early embryogenesis in discoglossoid frogs: a study of heterochrony at different taxonomic levels. Journal of Zoological Systematics & Evolutionary Research. 47(3). 248–257. 14 indexed citations
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Das, Indraneil, Jeet Sukumaran, & Alexander Haas. (2006). A Synopsis of Bioacoustic Studies of Anuran Amphibians of Borneo. Unimas Institutional Repository (Universiti Malaysia Sarawak). 1 indexed citations
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Haas, Alexander, et al.. (2006). The tadpole of Tomopterna luganga Channing, Moyer & Dawood, 2004 (Anura : Ranidae). 42.
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Candioti, M. Florencia Vera & Alexander Haas. (2004). Three-dimensional reconstruction of the hyobrancchial apparatus of Hyla nana tadpoles (Anura: hylidae). Cuadernos de herpetología. 18(1). 3–15. 5 indexed citations
18.
Chipman, Ariel D., Oded Khaner, Alexander Haas, & Eitan Tchernov. (2001). The evolution of genome size: What can be learned from anuran development?. Journal of Experimental Zoology. 291(4). 365–374. 28 indexed citations
19.
Haas, Alexander, et al.. (1983). A revision of the genus Tephrosia (Leguminosae-Papilionoideae) in Malesia. Blumea - Biodiversity Evolution and Biogeography of Plants. 28(2). 421–487. 9 indexed citations
20.
Haas, Alexander, et al.. (1980). Urariopsis reduced to Uraria (Leguminosae-Papilionoideae). Blumea - Biodiversity Evolution and Biogeography of Plants. 26(2). 439–444. 2 indexed citations

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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