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.
Empirical equations for some soil hydraulic properties
Countries citing papers authored by Roger B. Clapp
Since
Specialization
Citations
This map shows the geographic impact of Roger B. Clapp'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 Roger B. Clapp with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roger B. Clapp more than expected).
This network shows the impact of papers produced by Roger B. Clapp. 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 Roger B. Clapp. The network helps show where Roger B. Clapp may publish in the future.
Co-authorship network of co-authors of Roger B. Clapp
This figure shows the co-authorship network connecting the top 25 collaborators of Roger B. Clapp.
A scholar is included among the top collaborators of Roger B. Clapp 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 Roger B. Clapp. Roger B. Clapp 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.
Conant, Sheila, et al.. (1991). A New Tern (Sterna) Breeding Record for Hawaii. Pacific Science. 45(4). 348–354.2 indexed citations
2.
Clapp, Roger B., et al.. (1990). New records of birds for Kwajalein Atoll, Marshall Islands. 50(2). 11–14.2 indexed citations
3.
Lemke, Thomas O., et al.. (1990). New migrant and vagrant bird records for the Mariana Islands, 1978-1988. 23. 67–89.7 indexed citations
4.
Clapp, Roger B.. (1989). First record of the little tern, Sterna albifrons, from Hawaii. 49(7). 41–46.1 indexed citations
5.
Clapp, Roger B.. (1989). A specimen record of the fork-tailed swift from the Marshall Islands. 49(1). 1–2.1 indexed citations
6.
Clapp, Roger B.. (1987). Status of the red-footed booby colony on Little Cayman Island. Atoll research bulletin.5 indexed citations
7.
Erwin, R. Michael, et al.. (1986). Winter distribution and oiling of common terns in Trinidad: A further look. Journal of Field Ornithology. 57(4). 300–308.8 indexed citations
8.
Grzybowski, Joseph A., et al.. (1986). History and current population status of the black-capped vireo in Oklahoma. Digital Commons - University of South Florida (University of South Florida). 40(5). 1151–1161.23 indexed citations
9.
Clapp, Roger B.. (1986). Great-tailed Grackle kills Barn Swallow in flight. The Wilson Journal of Ornithology. 98(4). 614–615.2 indexed citations
Clapp, Roger B., et al.. (1983). First record of whiskered tern from the tropical Pacific. 41(9). 69–70.1 indexed citations
12.
Klimkiewicz, M.K., et al.. (1983). Longevity records of North American birds: Remizidae through Parulinae. Journal of Field Ornithology. 54(3). 287–294.23 indexed citations
13.
Clapp, Roger B., et al.. (1983). Marine birds of the southeastern United States and the Gulf of Mexico. Part III, Charadriiformes. FWS/OBS.7 indexed citations
14.
Clapp, Roger B., et al.. (1982). Marine birds of the southeastern United States and Gulf of Mexico. Part 1, Gaviiformes through Pelecaniformes. FWS/OBS.18 indexed citations
15.
Clapp, Roger B., M.K. Klimkiewicz, & John Kennard. (1982). Longevity Records of North American Birds: Gaviidae through Alcidae. Journal of Field Ornithology. 53(2). 81–124.44 indexed citations
16.
Clapp, Roger B., et al.. (1982). Marine birds of the southeastern United States and Gulf of Mexico. Part II. Anseriformes. FWS/OBS.36 indexed citations
17.
Clapp, Roger B., C.S. Robbins, & Karl W. Kenyon. (1980). Additional records of black-legged kittiwakes from the northwestern Hawaiian Islands. 40(7). 98–99.
18.
Clapp, Roger B.. (1979). Review of buff-breasted sandpiper records in the Central Pacific. 40(6). 93.
19.
Clapp, Roger B.. (1975). Specimens of three species of Pterodroma from the Pacific Ocean. Ardea. 62. 246–247.2 indexed citations
20.
Clapp, Roger B., et al.. (1973). Birds imported into the United States in 1970.3 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.