J.A. Spence

545 total citations
31 papers, 394 citations indexed

About

J.A. Spence is a scholar working on Molecular Biology, Urology and Periodontics. According to data from OpenAlex, J.A. Spence has authored 31 papers receiving a total of 394 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Molecular Biology, 6 papers in Urology and 6 papers in Periodontics. Recurrent topics in J.A. Spence's work include Oral microbiology and periodontitis research (6 papers), Periodontal Regeneration and Treatments (6 papers) and Cocoa and Sweet Potato Agronomy (4 papers). J.A. Spence is often cited by papers focused on Oral microbiology and periodontitis research (6 papers), Periodontal Regeneration and Treatments (6 papers) and Cocoa and Sweet Potato Agronomy (4 papers). J.A. Spence collaborates with scholars based in United Kingdom, Trinidad and Tobago and Tanzania. J.A. Spence's co-authors include E. C. Humphries, A. R. Sykes, Peter J. Atkinson, Ian R. Poxton, J. C. Low, Jane McCourtie, C. Robinson, J. Kirkham, I. Bremner and Mark Lewis and has published in prestigious journals such as Nature, Annals of Botany and Planta.

In The Last Decade

J.A. Spence

30 papers receiving 348 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J.A. Spence United Kingdom	13	94	93	80	64	48	31	394
J. Duckworth United Kingdom	17	98 1.0×	75 0.8×	82 1.0×	73 1.1×	220 4.6×	43	959
E. Cresswell United Kingdom	10	20 0.2×	82 0.9×	40 0.5×	22 0.3×	122 2.5×	36	365
Allen W. Anderson United States	8	24 0.3×	12 0.1×	52 0.7×	9 0.1×	134 2.8×	11	340
M.B. Orr New Zealand	11	142 1.5×	4 0.0×	48 0.6×	35 0.5×	56 1.2×	25	321
Sara Z. Sudo United States	8	64 0.7×	20 0.2×	136 1.7×	33 0.5×	5 0.1×	13	341
Sandeep Kaswan India	9	38 0.4×	8 0.1×	117 1.5×	11 0.2×	44 0.9×	39	281
D. Benzie Italy	11	21 0.2×	7 0.1×	48 0.6×	22 0.3×	213 4.4×	20	441
Pedro González‐Torres Spain	11	56 0.6×	26 0.3×	243 3.0×	6 0.1×	61 1.3×	20	428
Miguel Guzmán Guatemala	11	26 0.3×	43 0.5×	56 0.7×	11 0.2×	9 0.2×	36	346
Theodore Gibbons United States	8	241 2.6×	160 1.7×	442 5.5×	4 0.1×	4 0.1×	11	778

Countries citing papers authored by J.A. Spence

Since Specialization

Citations

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

Fields of papers citing papers by J.A. Spence

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.A. Spence. 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 J.A. Spence. The network helps show where J.A. Spence may publish in the future.

Co-authorship network of co-authors of J.A. Spence

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Galyuon, Isaac, et al.. (1996). The effect of irradiance level on cocoa (Theobroma cacao L.) : I. Growth and leaf adaptations. Tropical Agriculture. 73(1). 23–28. 15 indexed citations

Low, J. C., Phil Scott, Fiona Howie, et al.. (1996). Sulphur‐induced polioencephalomalacia in lambs. Veterinary Record. 138(14). 327–329. 27 indexed citations

Kirkham, J., C. Robinson, Andrew J. Smith, & J.A. Spence. (1992). The effect of periodontal disease on sulphated glycosylaminoglycan distribution in the sheep periodontium. Archives of Oral Biology. 37(12). 1031–1037. 15 indexed citations

Kirkham, J., C. Robinson, & J.A. Spence. (1991). Effect of periodontal disease (“broken mouth”) on the distribution of matrix macromolecules in the sheep periodontium. Archives of Oral Biology. 36(4). 257–263. 7 indexed citations

McCourtie, Jane, et al.. (1990). A longitudinal study of the cultivable subgingival anaerobic bacteria isolated from sheep during the development of broken mouth periodontitis. Journal of Medical Microbiology. 31(4). 275–283. 23 indexed citations

McCourtie, Jane, et al.. (1989). Preliminary study of the anaerobic bacteria isolated from subgingival plaque from sheep. Veterinary Microbiology. 21(2). 139–146. 12 indexed citations

Spence, J.A., et al.. (1988). Development of periodontal disease in a single flock of sheep: clinical signs, morphology of subgingival plaque and influence of antimicrobial agents. Research in Veterinary Science. 45(3). 324–331. 13 indexed citations

Smith, B.S.W., et al.. (1985). Effects in sheep of high dietary levels of vitamin D3 as measured by circulating concentrations of some vitamin D metabolites and skeletal examination. Research in Veterinary Science. 38(3). 317–321. 3 indexed citations

Spence, J.A., et al.. (1984). Dental disease in hill sheep: An abattoir survey. Journal of Comparative Pathology. 94(2). 285–300. 20 indexed citations

10.

Spence, J.A., et al.. (1982). Morphology and radio-opaque lines in bones of foetal lambs: The effects of maternal nutrition. Journal of Comparative Pathology. 92(2). 317–329. 9 indexed citations

11.

Coop, R.L., et al.. (1981). Ostertagia circumcincta infection of lambs, the effect of different intakes of larvae on skeletal development. Journal of Comparative Pathology. 91(4). 521–530. 12 indexed citations

12.

Spence, J.A., et al.. (1980). A sequential study of the skeletal abnormalities which develop in rats given a small dietary supplement of ammonium tetrathiomolybdate. Journal of Comparative Pathology. 90(1). 139–153. 26 indexed citations

13.

Spence, J.A., et al.. (1980). Broken mouth (premature incisor loss) in sheep: The pathogenesis of periodontal disease. Journal of Comparative Pathology. 90(2). 275–292. 40 indexed citations

14.

Spence, J.A., et al.. (1976). The micrometeorology of a pigeon pea stand. Agricultural Meteorology. 17(3). 205–210. 1 indexed citations

15.

Spence, J.A., et al.. (1972). Rooted leaves for physiological experiments. Planta. 104(4). 352–356. 1 indexed citations

16.

Ferguson, T., et al.. (1971). Distribution of dry matter and mineral nutrients in tubers of two cultivars of Dioscorea alata L.. Tropical Agriculture. 57(1). 61–67. 11 indexed citations

17.

Spence, J.A.. (1961). Black‐pod disease of cocoa. Annals of Applied Biology. 49(4). 717–722. 4 indexed citations

18.

Spence, J.A.. (1961). Black‐pod disease of cocoa. Annals of Applied Biology. 49(4). 723–734. 12 indexed citations

19.

Spence, J.A.. (1961). Probable Mechanism of Resistance of Varieties of Cocoa to Black Pod Disease caused by Phytophthora palmivora (Butl.) Butl.. Nature. 192(4799). 278–278. 9 indexed citations

20.

Spence, J.A.. (1957). Incidence of leaf scald disease of sugar cane in the West Indies.. 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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