Willard D. Hartman

1.3k total citations
22 papers, 904 citations indexed

About

Willard D. Hartman is a scholar working on Biotechnology, Ecology and Molecular Biology. According to data from OpenAlex, Willard D. Hartman has authored 22 papers receiving a total of 904 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Biotechnology, 6 papers in Ecology and 2 papers in Molecular Biology. Recurrent topics in Willard D. Hartman's work include Marine Sponges and Natural Products (10 papers), Coral and Marine Ecosystems Studies (4 papers) and Parasite Biology and Host Interactions (2 papers). Willard D. Hartman is often cited by papers focused on Marine Sponges and Natural Products (10 papers), Coral and Marine Ecosystems Studies (4 papers) and Parasite Biology and Host Interactions (2 papers). Willard D. Hartman collaborates with scholars based in United States, Belgium and France. Willard D. Hartman's co-authors include Thomas F. Goreau, J. E. Randall, Jeremy B. C. Jackson, Patricia R. Bergquist, E. C. Dougherty, Earl D. Hanson, Robert E. Habel, R. G. Kauffman, Frans J.M. Smulders and Philippe Willenz and has published in prestigious journals such as Science, Evolution and Meat Science.

In The Last Decade

Willard D. Hartman

22 papers receiving 782 citations

Peers

Willard D. Hartman
R.W.M. van Soest Netherlands
Philippe Willenz Belgium
Malcolm Hill United States
PW Sammarco Australia
John P. Thorpe United Kingdom
Bernard Picton United Kingdom
Michelle Klautau Brazil
Leontine E. Becking Netherlands
Steven E. McMurray United States
Sergi Taboada Spain
R.W.M. van Soest Netherlands
Willard D. Hartman
Citations per year, relative to Willard D. Hartman Willard D. Hartman (= 1×) peers R.W.M. van Soest

Countries citing papers authored by Willard D. Hartman

Since Specialization
Citations

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

Fields of papers citing papers by Willard D. Hartman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Willard D. Hartman. 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 Willard D. Hartman. The network helps show where Willard D. Hartman may publish in the future.

Co-authorship network of co-authors of Willard D. Hartman

This figure shows the co-authorship network connecting the top 25 collaborators of Willard D. Hartman. A scholar is included among the top collaborators of Willard D. Hartman 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 Willard D. Hartman. Willard D. Hartman 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.
Vacelet, Jean, Philippe Willenz, & Willard D. Hartman. (2011). Treatise Online, no. 1, Part E, Revised, Volume 4, Chapter 1: Living hypercalcified sponges. Latin American Theatre Review (The University of Kansas). 0(0). 1 indexed citations
2.
Willenz, Philippe & Willard D. Hartman. (2004). STORAGE CELLS AND SPERMATIC CYSTS IN THE CARIBBEAN CORALLINE SPONGE GOREAUIELLA AURICULATA (ASTROSCLERIDAE, AGELASIDA, DEMOSPONGIAE): A RELATIONSHIP ?. 68. 673–681. 4 indexed citations
3.
Kauffman, R. G., et al.. (1990). Recommended terminology for the muscle commonly designates Longissimus dorsi. Meat Science. 28(3). 259–265. 21 indexed citations
4.
Hartman, Willard D., et al.. (1989). Micromorphology and ultrastructure of Caribbean sclerosponges. Marine Biology. 103(3). 387–401. 52 indexed citations
5.
Hartman, Willard D.. (1983). Modern and Ancient Sclerospongiae. 7. 116–129. 3 indexed citations
6.
Hartman, Willard D. & Thomas F. Goreau. (1975). A Pacific tabulate sponge, living representative of a new order of sclerosponges. Biodiversity Heritage Library (Smithsonian Institution). 167. 1–21. 62 indexed citations
7.
Hartman, Willard D.. (1969). New genera and species of coralline sponges (Porifera) from Jamaica. Biodiversity Heritage Library (Smithsonian Institution). 137. 1–39. 46 indexed citations
8.
Bergquist, Patricia R. & Willard D. Hartman. (1969). Free amino acid patterns and the classification of the Demospongiae. Marine Biology. 3(3). 247–268. 45 indexed citations
9.
Randall, J. E. & Willard D. Hartman. (1968). Sponge-feeding fishes of the West Indies. Marine Biology. 1(3). 216–225. 188 indexed citations
10.
Hartman, Willard D.. (1967). Revision of Neofibularia (Porifera, Demospongiae), a genus of toxic sponges from the West Indies and Australia. Biodiversity Heritage Library (Smithsonian Institution). 113. 1–41. 11 indexed citations
11.
Goreau, Thomas F. & Willard D. Hartman. (1966). Sponge: Effect on the Form of Reef Corals. Science. 151(3708). 343–344. 39 indexed citations
12.
13.
Nicholas, W. L., et al.. (1963). Embryology, post-embryonic development, and phylogeny of the Acanthocephala.. 3 indexed citations
14.
Dougherty, E. C., et al.. (1963). Morphological, biological, and ecological considerations in the phylogeny of parasitic nematodes.. 17 indexed citations
15.
Dougherty, E. C., et al.. (1963). The lower Metazoa, comparative biology and phylogeny. 39 indexed citations
16.
Jennings, J. B., et al.. (1963). Some aspects of nutrition in the Turbellaria, Trematoda, and Rhynchocoela.. 3 indexed citations
17.
Hartman, Willard D.. (1958). Natural History of the Marine Sponges of Southern New England. Biodiversity Heritage Library (Smithsonian Institution). 127 indexed citations
18.
Hartman, Willard D.. (1958). A Re-Examination of Bidder's Classification of the Calcarea. Systematic Zoology. 7(3). 97–97. 30 indexed citations
19.
Hartman, Willard D.. (1957). Ecological Niche Differentiation in the Boring Sponges (Clionidae). Evolution. 11(3). 294–294. 17 indexed citations
20.
Hartman, Willard D.. (1957). ECOLOGICAL NICHE DIFFERENTIATION IN THE BORING SPONGES (CLIONIDAE). Evolution. 11(3). 294–297. 35 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

Breakdown of academic impact, for papers by R.W.M. van Soest Breakdown of academic impact, for papers by Philippe Willenz Breakdown of academic impact, for papers by Malcolm Hill Breakdown of academic impact, for papers by PW Sammarco Breakdown of academic impact, for papers by John P. Thorpe Breakdown of academic impact, for papers by Bernard Picton Breakdown of academic impact, for papers by Michelle Klautau Breakdown of academic impact, for papers by Leontine E. Becking Breakdown of academic impact, for papers by Steven E. McMurray Breakdown of academic impact, for papers by Sergi Taboada
Rankless by CCL
2026