R. P. Littlejohn

4.3k total citations
153 papers, 3.4k citations indexed

About

R. P. Littlejohn is a scholar working on Agronomy and Crop Science, Ecology and Genetics. According to data from OpenAlex, R. P. Littlejohn has authored 153 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 51 papers in Agronomy and Crop Science, 49 papers in Ecology and 49 papers in Genetics. Recurrent topics in R. P. Littlejohn's work include Genetic and phenotypic traits in livestock (45 papers), Wildlife Ecology and Conservation (45 papers) and Reproductive Physiology in Livestock (38 papers). R. P. Littlejohn is often cited by papers focused on Genetic and phenotypic traits in livestock (45 papers), Wildlife Ecology and Conservation (45 papers) and Reproductive Physiology in Livestock (38 papers). R. P. Littlejohn collaborates with scholars based in New Zealand, Australia and United States. R. P. Littlejohn's co-authors include J.C. Pollard, J. M. Suttie, R. J. Paton, Fiona Buchanan, James R. Webster, Eva Wiklund, Cecile A. M. de Klein, John J. Drewry, I. D. Corson and Allan M. Crawford and has published in prestigious journals such as SHILAP Revista de lepidopterología, Endocrinology and Molecular Ecology.

In The Last Decade

R. P. Littlejohn

150 papers receiving 3.1k citations

Peers

R. P. Littlejohn

ECOLO

GENET

ASZ

ACS

Eugene D. Ungar Israel

S. W. Coleman United States

H. Dove Australia

A. Susenbeth Germany

Rodrigo Labouriau Denmark

J. Craigon United Kingdom

K. Betteridge Canada

R.C. Cochran United States

Peter Sørensen Denmark

S. A. Gunter United States

Eugene D. Ungar Israel

R. P. Littlejohn

1.4k ×1.5

ECOLO

686 ×0.8

GENET

545 ×0.7

ASZ

981 ×1.4

ACS

471 ×0.8

Citations per year, relative to R. P. Littlejohn R. P. Littlejohn (= 1×) peers Eugene D. Ungar

Countries citing papers authored by R. P. Littlejohn

Since Specialization

Citations

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

Fields of papers citing papers by R. P. Littlejohn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. P. Littlejohn. 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 R. P. Littlejohn. The network helps show where R. P. Littlejohn may publish in the future.

Co-authorship network of co-authors of R. P. Littlejohn

This figure shows the co-authorship network connecting the top 25 collaborators of R. P. Littlejohn. A scholar is included among the top collaborators of R. P. Littlejohn 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 R. P. Littlejohn. R. P. Littlejohn 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

Asher, G.W., et al.. (2021). The use of GPS data to assess behaviour of red deer hinds over calving: hinds farmed in extensive high‐country environments. New Zealand Journal of Agricultural Research. 65(1). 82–102. 1 indexed citations

Houlbrooke, D. J., John J. Drewry, R. M. Monaghan, et al.. (2009). Grazing strategies to protect soil physical properties and maximise pasture yield on a Southland dairy farm. New Zealand Journal of Agricultural Research. 52(3). 323–336. 36 indexed citations

Monaghan, R. M., R. J. Paton, L. C. Smith, John J. Drewry, & R. P. Littlejohn. (2005). The impacts of nitrogen fertilisation and increased stocking rate on pasture yield, soil physical condition and nutrient losses in drainage from a cattle‐grazed pasture. New Zealand Journal of Agricultural Research. 48(2). 227–240. 108 indexed citations

Pollard, J.C., et al.. (2003). Shade and shelter for farmed deer in New Zealand: Results from a survey of farmers. New Zealand Journal of Agricultural Research. 46(4). 287–294. 4 indexed citations

Evans, A. C., G. K. Burge, R. P. Littlejohn, et al.. (2002). Mount Cook lily ( Ranunculus lyallii )—a potential cut flower?. New Zealand Journal of Crop and Horticultural Science. 30(1). 69–78. 5 indexed citations

Littlejohn, R. P., et al.. (2000). Effect of shade on growth and photosynthesis of Panax ginseng. New Zealand Journal of Crop and Horticultural Science. 28(4). 255–269. 23 indexed citations

Drewry, John J., R. P. Littlejohn, & R. J. Paton. (2000). A survey of soil physical properties on sheep and dairy farms in southern New Zealand. New Zealand Journal of Agricultural Research. 43(2). 251–258. 74 indexed citations

Pollard, J.C. & R. P. Littlejohn. (1999). Shelter for lambing in southern New Zealand. II. Sheltering behaviour and effects on productivity. New Zealand Journal of Agricultural Research. 42(2). 171–177. 16 indexed citations

Lowther, W. L., et al.. (1998). Establishment response of 12 legumes to nitrogen fertiliser rate and placement when direct drilled into Hieracium ‐infested, montane tussock grasslands. New Zealand Journal of Agricultural Research. 41(1). 53–63. 8 indexed citations

10.

Veenvliet, B. A., et al.. (1998). Growth hormone secretion and pituitary gland weight in suckling lambs from genetically lean and fat sheep. New Zealand Journal of Agricultural Research. 41(3). 387–393. 7 indexed citations

11.

Littlejohn, R. P., et al.. (1997). Planting density effects on root yield of purple coneflower ( Echinacea purpurea (L.) Moench). New Zealand Journal of Crop and Horticultural Science. 25(2). 169–175. 12 indexed citations

12.

Lowther, W. L., et al.. (1997). Establishment of legumes and grasses overdrilled into Hieracium ‐ infested montane tussock grasslands. New Zealand Journal of Agricultural Research. 40(3). 317–328. 4 indexed citations

13.

Littlejohn, R. P., et al.. (1996). Chilling requirement of commercial Echinacea seed. New Zealand Journal of Crop and Horticultural Science. 24(1). 109–114. 12 indexed citations

14.

Isaacs, Kim L., et al.. (1991). Influence of maternal liveweight on reproductive performance and wool production of heterozygous Booroola Merino × Coopworth (Fec ^B Fec ⁺ ) and Merino × Coopworth ewes. New Zealand Journal of Agricultural Research. 34(1). 55–67. 5 indexed citations

15.

Littlejohn, R. P., et al.. (1989). Relationships between staple strength and other wool characteristics of Romney ewes. New Zealand Journal of Agricultural Research. 32(2). 305–310. 7 indexed citations

16.

Littlejohn, R. P., et al.. (1989). Integrated management of grass grub, Costelytra zealandica (White), in pasture using fensulfothion insecticide and nitrogen fertiliser alone and combined. New Zealand Journal of Agricultural Research. 32(3). 401–408. 2 indexed citations

17.

Littlejohn, R. P., et al.. (1989). Hybridisation of farmed wapiti ( Cervus elaphus manitobensis ) and red deer ( Cervus elaphus ). New Zealand Journal of Zoology. 16(2). 191–198. 16 indexed citations

18.

Lord, E.A., P. F. Fennessy, & R. P. Littlejohn. (1988). Comparison of genotype and nutritional effects on body and carcass characteristics of lambs. New Zealand Journal of Agricultural Research. 31(1). 13–19. 13 indexed citations

19.

Littlejohn, R. P., et al.. (1988). Liveweights, growth rates, and mortality of farmed red deer at Invermay. New Zealand Journal of Agricultural Research. 31(3). 293–300. 21 indexed citations

20.

Littlejohn, R. P., et al.. (1988). Liveweights, growth rates, and antler measurements of farmed red deer stags and their usefulness as predictors of performance. New Zealand Journal of Agricultural Research. 31(3). 285–291. 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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