Donald L. Copes

423 total citations
34 papers, 289 citations indexed

About

Donald L. Copes is a scholar working on Plant Science, Nature and Landscape Conservation and Cell Biology. According to data from OpenAlex, Donald L. Copes has authored 34 papers receiving a total of 289 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Plant Science, 11 papers in Nature and Landscape Conservation and 7 papers in Cell Biology. Recurrent topics in Donald L. Copes's work include Plant Disease Management Techniques (11 papers), Seedling growth and survival studies (8 papers) and Forest ecology and management (7 papers). Donald L. Copes is often cited by papers focused on Plant Disease Management Techniques (11 papers), Seedling growth and survival studies (8 papers) and Forest ecology and management (7 papers). Donald L. Copes collaborates with scholars based in United States and United Kingdom. Donald L. Copes's co-authors include W. T. Adams, A. R. Griffin, Nancy L. Mandel, Steven H. Strauss, Roy C. Beckwith, Richard A. Sniezko, Nan C. Vance, Joe B. Zaerr, James A. Entry and Lichao Huang and has published in prestigious journals such as PLANT PHYSIOLOGY, American Journal of Botany and Canadian Journal of Forest Research.

In The Last Decade

Donald L. Copes

33 papers receiving 229 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Donald L. Copes United States	9	178	99	80	68	60	34	289
J. A. Pitel Canada	11	167 0.9×	166 1.7×	118 1.5×	112 1.6×	86 1.4×	29	361
JJ Burdon Australia	11	256 1.4×	82 0.8×	158 2.0×	83 1.2×	106 1.8×	16	420
Dag Rudin Sweden	8	145 0.8×	101 1.0×	114 1.4×	102 1.5×	85 1.4×	15	290
H. B. Kriebel United States	12	193 1.1×	166 1.7×	51 0.6×	34 0.5×	139 2.3×	24	383
James C. Parks United States	6	175 1.0×	86 0.9×	230 2.9×	191 2.8×	123 2.0×	7	435
C. A. Whittle Sweden	11	264 1.5×	196 2.0×	75 0.9×	67 1.0×	75 1.3×	14	442
T. M. Hardig United States	8	190 1.1×	138 1.4×	246 3.1×	95 1.4×	78 1.3×	11	396
Curt Almqvist Sweden	12	162 0.9×	85 0.9×	70 0.9×	41 0.6×	140 2.3×	28	310
G. Natho Germany	8	209 1.2×	43 0.4×	238 3.0×	37 0.5×	43 0.7×	39	325
Kihachiro Ohba Japan	11	212 1.2×	171 1.7×	183 2.3×	274 4.0×	85 1.4×	28	482

Countries citing papers authored by Donald L. Copes

Since Specialization

Citations

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

Fields of papers citing papers by Donald L. Copes

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Donald L. Copes. 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 Donald L. Copes. The network helps show where Donald L. Copes may publish in the future.

Co-authorship network of co-authors of Donald L. Copes

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

All Works

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20 of 20 papers shown

Copes, Donald L.. (1999). Breeding graft-compatible Douglas-fir rootstocks ( Pseudotsuga menziesii (Mirb.) Franco).. Silvae genetica. 48. 188–193. 4 indexed citations

Copes, Donald L., et al.. (1995). Genetic analysis on the hybrid origin of Populus tomentosa Carr.. Silvae genetica. 44(4). 165–173. 2 indexed citations

Entry, James A., Nan C. Vance, & Donald L. Copes. (1994). Resistance of graft-compatible and graft-incompatible Pseudotsugamenziesii rooted cuttings to Phellinusweirii. Canadian Journal of Forest Research. 24(5). 878–881. 5 indexed citations

Adams, W. T., Steven H. Strauss, Donald L. Copes, & A. R. Griffin. (1992). Population Genetics of Forest Trees. 59 indexed citations

Vance, Nan C., Donald L. Copes, & Joe B. Zaerr. (1990). Differences in Proteins Synthesized in Needles of Unshaded and Shaded Pinus ponderosa var Scopulorum Seedlings during Prolonged Drought. PLANT PHYSIOLOGY. 92(4). 1244–1248. 5 indexed citations

Adams, W. T., et al.. (1990). Is Research Keeping Up with the Needs of Douglas-Fir Tree Improvement Programs?. Western Journal of Applied Forestry. 5(4). 135–137. 6 indexed citations

Copes, Donald L.. (1987). Long-Term Storage of Douglas-fir Pollens. Forest Science. 33(1). 244–246. 4 indexed citations

Copes, Donald L.. (1987). Effects of Rootstock Age on Leader Growth, Plagiotropism, and Union Formation in Douglas-Fir Grafts. 3 indexed citations

Copes, Donald L.. (1985). Fertility of Douglas-fir Pollen After One Year of Storage in Liquid Nitrogen. Forest Science. 31(3). 569–574. 4 indexed citations

10.

Copes, Donald L., et al.. (1985). Effects of leader topping and branch pruning on efficiency of Douglas-fir cone harvesting with a tree shaker /. Biodiversity Heritage Library (Smithsonian Institution). 1 indexed citations

11.

Copes, Donald L., et al.. (1983). Tree shaking machine aids cone collection in a Douglas-fir seed orchard /. Biodiversity Heritage Library (Smithsonian Institution). 2 indexed citations

12.

Copes, Donald L.. (1981). Isoenzyme uniformity in western red cedar seedlings from Oregon and Washington. Canadian Journal of Forest Research. 11(2). 451–453. 37 indexed citations

13.

Copes, Donald L.. (1980). Development of internal graft incompatibility symptoms in Pinus radiata D. Don.. New Zealand journal of forestry science. 10(2). 367–380. 4 indexed citations

14.

Copes, Donald L.. (1980). Anatomical symptoms of graft incompatibility in Pinus monticola and P. ponderosa.. Silvae genetica. 29. 77–82. 5 indexed citations

15.

Copes, Donald L.. (1980). Effect of root stock vigor on leader elongation, branch growth, and plagiotropism in 4- and 8-year-old Douglas-fir grafts.. 31(1). 11–14. 5 indexed citations

16.

Copes, Donald L.. (1978). Isoenzyme Activities Differ in Compatible and Incompatible Douglas-fir Graft Unions. Forest Science. 24(2). 297–303. 3 indexed citations

17.

Copes, Donald L.. (1975). Isoenzyme Study of Dwarf and Normal Douglas-Fir Trees. Botanical Gazette. 136(4). 347–352. 6 indexed citations

18.

Copes, Donald L.. (1970). Initiation and development of graft incompatibility symptoms in Douglas-Fir.. Silvae genetica. 19. 9 indexed citations

19.

Copes, Donald L., et al.. (1970). The Relationship between Douglas-Fir Graft Compatibility and Wood Specific Gravity. Journal of Forestry. 68(11). 726–726.

20.

Copes, Donald L.. (1969). GRAFT UNION FORMATION IN DOUGLAS‐FIR. American Journal of Botany. 56(3). 285–289. 20 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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