Loengrin Umaña

518 total citations
22 papers, 343 citations indexed

About

Loengrin Umaña is a scholar working on Cell Biology, Plant Science and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Loengrin Umaña has authored 22 papers receiving a total of 343 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Cell Biology, 17 papers in Plant Science and 12 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Loengrin Umaña's work include Plant Pathogens and Fungal Diseases (18 papers), Mycorrhizal Fungi and Plant Interactions (16 papers) and Lichen and fungal ecology (11 papers). Loengrin Umaña is often cited by papers focused on Plant Pathogens and Fungal Diseases (18 papers), Mycorrhizal Fungi and Plant Interactions (16 papers) and Lichen and fungal ecology (11 papers). Loengrin Umaña collaborates with scholars based in Costa Rica, United States and Germany. Loengrin Umaña's co-authors include Robert Lücking, José Luis Chaves, Harrie J. M. Sipman, André Aptroot, Eimy Rivas Plata, Matthew P. Nelsen, H. Thorsten Lumbsch, Susan Will‐Wolf, Ruth Del‐Prado and Marie T. Trest and has published in prestigious journals such as American Journal of Botany, Mycologia and The Bryologist.

In The Last Decade

Loengrin Umaña

22 papers receiving 310 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Loengrin Umaña Costa Rica 10 309 301 161 27 14 22 343
Xavier Llimona Spain 11 377 1.2× 342 1.1× 129 0.8× 20 0.7× 34 2.4× 67 422
Luis Fernando Coca Colombia 7 208 0.7× 200 0.7× 132 0.8× 13 0.5× 25 1.8× 13 249
Armin Mangold United States 11 429 1.4× 409 1.4× 238 1.5× 12 0.4× 39 2.8× 21 463
Alba Yánez-Ayabaca Ecuador 5 182 0.6× 173 0.6× 114 0.7× 11 0.4× 21 1.5× 6 214
Thorsten Lumbsch United States 6 217 0.7× 189 0.6× 139 0.9× 13 0.5× 32 2.3× 8 240
Pamela Rodriguez‐Flakus Poland 12 270 0.9× 278 0.9× 122 0.8× 11 0.4× 14 1.0× 33 318
Dorothee Killmann Germany 9 163 0.5× 179 0.6× 66 0.4× 18 0.7× 16 1.1× 33 197
Michael Loizides Cyprus 9 171 0.6× 82 0.3× 101 0.6× 68 2.5× 37 2.6× 22 202
Peter Döbbeler Germany 11 396 1.3× 337 1.1× 186 1.2× 25 0.9× 61 4.4× 54 451
Bettina Staiger Germany 10 345 1.1× 377 1.3× 153 1.0× 3 0.1× 21 1.5× 10 383

Countries citing papers authored by Loengrin Umaña

Since Specialization
Citations

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

Fields of papers citing papers by Loengrin Umaña

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Loengrin Umaña

This figure shows the co-authorship network connecting the top 25 collaborators of Loengrin Umaña. A scholar is included among the top collaborators of Loengrin Umaña 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 Loengrin Umaña. Loengrin Umaña 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
1.
Kim, Ki Hyun, Christine Beemelmanns, Loengrin Umaña, et al.. (2014). Naphthalenones and Isocoumarins from a Costa Rican Fungus Xylariaceae sp. CR1546C. Journal of Chemical Research. 38(12). 722–725. 14 indexed citations
2.
Lücking, Robert, Eimy Rivas Plata, José Luis Chaves, Loengrin Umaña, & Harrie J. M. Sipman. (2009). How many tropical lichens are there ... really. 100. 399–418. 59 indexed citations
3.
Lücking, Robert, et al.. (2008). Eremithallus costaricensis (Ascomycota: Lichinomycetes: Eremothallales), a new fungal lineage with a novel lichen symbiotic lifestyle discovered in an urban relict forest in Costa Rica. Symbiosis. 46(3). 161–170. 16 indexed citations
4.
Lücking, Robert, Ruth Del‐Prado, H. Thorsten Lumbsch, et al.. (2008). Phylogenetic patterns of morphological and chemical characters and reproductive mode in the Heterodermia obscurata group in Costa Rica (Ascomycota, Physciaceae). Systematics and Biodiversity. 6(1). 31–41. 38 indexed citations
5.
Lücking, Robert, José Luis Chaves, Harrie J. M. Sipman, Loengrin Umaña, & André Aptroot. (2008). A First Assessment of the Ticolichen Biodiversity Inventory in Costa Rica: The Genus Graphis, with Notes on the Genus Hemithecium (Ascomycota: Ostropales: Graphidaceae). BioOne Complete (BioOne). 46. 1–126. 73 indexed citations
6.
Aptroot, André, Robert Lücking, Harrie J. M. Sipman, Loengrin Umaña, & José Luis Chaves. (2008). Pyrenocarpous lichens with bitunicate asci. 5 indexed citations
7.
Shoemaker, R. A., et al.. (2007). Some new hysteriaceous Fungi from Costa Rica. Mycologia. 99(2). 285–290. 2 indexed citations
8.
Nelsen, Matthew P., Robert Lücking, Loengrin Umaña, et al.. (2007). Multiclavula ichthyiformis (Fungi: Basidiomycota: Cantharellales: Clavulinaceae), a remarkable new basidiolichen from Costa Rica. American Journal of Botany. 94(8). 1289–1296. 25 indexed citations
9.
Shoemaker, R. A., et al.. (2007). Some new hysteriaceous Fungi from Costa Rica. Mycologia. 99(2). 285–290. 8 indexed citations
10.
Calonge, F.D., et al.. (2007). Macrocybe titans, un hongo espectacular presente en Costa Rica, América Central.. DIGITAL.CSIC (Spanish National Research Council (CSIC)). 2 indexed citations
11.
Stchigel, Alberto M., et al.. (2006). Two new ascomycetes from rainforest litter in Costa Rica. Mycologia. 98(5). 815–820. 2 indexed citations
12.
13.
Nelsen, Matthew P., et al.. (2006). A first assessment of the Ticolichen biodiversity inventory in Costa Rica: the genus Haematomma (Lecanorales: Lecanoraceae). The Lichenologist. 38(3). 251–262. 14 indexed citations
14.
Calonge, F.D., et al.. (2006). Adiciones y correcciones al catálogo de Ascomycota (Fungi) de Costa Rica, con especial referencia al género Scutellinia.. DIGITAL.CSIC (Spanish National Research Council (CSIC)). 1 indexed citations
15.
Calonge, F.D., et al.. (2006). El género Phillipsia (Ascomycota) en Costa Rica, con una clave para identificar las especies.. DIGITAL.CSIC (Spanish National Research Council (CSIC)). 2 indexed citations
16.
Fernández, Fernando A., Jack D. Rogers, Yu‐Ming Ju, Sabine M. Huhndorf, & Loengrin Umaña. (2004). Paramphisphaeria costaricensisgen. et sp. nov. andPachytrype rimosasp. nov. from Costa Rica. Mycologia. 96(1). 175–179. 5 indexed citations
17.
Fernández, Fernando A., Jack D. Rogers, Yu‐Ming Ju, et al.. (2004). Paramphisphaeria costaricensis gen. et sp. nov. and Pachytrype rimosa sp. nov. from Costa Rica. Mycologia. 96(1). 175–175. 2 indexed citations
18.
Chaves, José Luis, et al.. (2004). A First Assessment of the Ticolichen Biodiversity Inventory in Costa Rica: The Genus Dictyonema (Polyporales: Atheliaceae). The Bryologist. 107(2). 242–249. 30 indexed citations
19.
Chaverrí, Priscila, Gary J. Samuels, Elwin L. Stewart, & Loengrin Umaña. (2001). Hypocrea nigrovirens , a new species with a gliocladium-like anamorph. Mycologia. 93(4). 758–763. 3 indexed citations
20.
Chaverrí, Priscila, Gary J. Samuels, Elwin L. Stewart, & Loengrin Umaña. (2001). Hypocrea nigrovirens, a New Species with a Gliocladium-like Anamorph. Mycologia. 93(4). 758–758. 3 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.

Explore authors with similar magnitude of impact

Rankless by CCL
2026