M. J. Littlejohn

1.4k total citations
37 papers, 916 citations indexed

About

M. J. Littlejohn is a scholar working on Global and Planetary Change, Ecology, Evolution, Behavior and Systematics and Genetics. According to data from OpenAlex, M. J. Littlejohn has authored 37 papers receiving a total of 916 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Global and Planetary Change, 18 papers in Ecology, Evolution, Behavior and Systematics and 12 papers in Genetics. Recurrent topics in M. J. Littlejohn's work include Amphibian and Reptile Biology (25 papers), Animal Behavior and Reproduction (10 papers) and Species Distribution and Climate Change (8 papers). M. J. Littlejohn is often cited by papers focused on Amphibian and Reptile Biology (25 papers), Animal Behavior and Reproduction (10 papers) and Species Distribution and Climate Change (8 papers). M. J. Littlejohn collaborates with scholars based in Australia and United States. M. J. Littlejohn's co-authors include Graeme Watson, Angus Martin, R. S. Oldham, Paula A. Harrison, A. R. Main, J. I. Menzies, Scott Thomson, Will Osborne, A. I. Robertson and Margaret Davies and has published in prestigious journals such as Science, Evolution and The Journal of the Acoustical Society of America.

In The Last Decade

M. J. Littlejohn

35 papers receiving 752 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
M. J. Littlejohn Australia	16	601	567	295	230	181	37	916
Charles M. Bogert United States	13	498 0.8×	310 0.5×	102 0.3×	181 0.8×	179 1.0×	37	725
N. I. Passmore South Africa	18	732 1.2×	932 1.6×	334 1.1×	223 1.0×	394 2.2×	46	1.3k
Sergio Castellano Italy	21	649 1.1×	727 1.3×	347 1.2×	189 0.8×	211 1.2×	54	1.1k
Don C. Forester United States	18	562 0.9×	484 0.9×	162 0.5×	90 0.4×	198 1.1×	36	719
Jeremy Robertson Australia	21	477 0.8×	1.1k 1.9×	468 1.6×	203 0.9×	550 3.0×	32	1.4k
David L. Jameson United States	17	414 0.7×	414 0.7×	48 0.2×	198 0.9×	241 1.3×	44	768
Daniel S. Townsend United States	14	626 1.0×	490 0.9×	57 0.2×	117 0.5×	145 0.8×	19	810
Godfrey R. Bourne United States	16	319 0.5×	438 0.8×	116 0.4×	183 0.8×	120 0.7×	27	654
Antonieta Labra Chile	22	894 1.5×	924 1.6×	157 0.5×	160 0.7×	296 1.6×	68	1.3k
Charles C. Carpenter United States	22	902 1.5×	704 1.2×	50 0.2×	159 0.7×	429 2.4×	53	1.2k

Countries citing papers authored by M. J. Littlejohn

Since Specialization

Citations

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

Fields of papers citing papers by M. J. Littlejohn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of M. J. Littlejohn

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

Littlejohn, M. J. & Edwin Maas. (2025). Acoustic Measures of Word-Level Prosody in Childhood Apraxia of Speech: An Initial Validation Study. American Journal of Speech-Language Pathology. 34(4S). 2485–2508.

Littlejohn, M. J. & Edwin Maas. (2023). How to cut the pie is no piece of cake: Toward a process‐oriented approach to assessment and diagnosis of speech sound disorders. International Journal of Language & Communication Disorders. 59(6). 2158–2180. 4 indexed citations

Littlejohn, M. J.. (2005). Geographic variation in advertisement calls of Crinia signifera (Anura : Myobatrachidae) in the Bass Strait area of south-eastern Australia. Australian Journal of Zoology. 53(4). 221–228. 3 indexed citations

Osborne, Will, M. J. Littlejohn, & Scott Thomson. (1996). Former distribution and apparent disappearance of the Litoria aurea complex from the Southern Tablelands of New South Wales and the Australian Capital Territory. Australian Zoologist. 30(2). 190–198. 41 indexed citations

Thomson, Scott, et al.. (1996). Taxonomy of the Litoria aurea complex: a re-evaluation of the Southern Tableland populations of the Australian Capital Territory and New South Wales. Australian Zoologist. 30(2). 158–169. 15 indexed citations

Brown, Paul B., et al.. (1994). A new genus and species of frog (Anura: Leptodactylidae: Myobatrachinae) from southern Tasmania. Biodiversity Heritage Library (Smithsonian Institution). 9 indexed citations

Harrison, Paula A. & M. J. Littlejohn. (1985). Diphasy in the advertisement calls of Geocrinia laevis (Anura: Leptodactylidae): vocal responses of males during field playback experiments. Behavioral Ecology and Sociobiology. 18(1). 67–73. 12 indexed citations

Littlejohn, M. J., et al.. (1978). ANALYSIS OF A NARROW HYBRID ZONE BETWEEN TWO SPECIES OFPSEUDOPHRYNE(ANURA: LEPTODACTYLIDAE) IN SOUTH-EASTERN AUSTRALIA. Evolution. 32(3). 602–612. 40 indexed citations

Littlejohn, M. J. & Graeme Watson. (1976). Effectiveness of A Hybrid Mating Call in Eliciting Phonotaxis by Females of the Geocrinia laevis Complex (Anura: Leptodactylidae). Copeia. 1976(1). 76–76. 13 indexed citations

10.

Littlejohn, M. J. & Graeme Watson. (1976). MATING-CALL STRUCTURE IN A HYBRID POPULATION OF THE Geocrinia laevis COMPLEX (ANURA:LEPTODACTYLIDAE) OVER A SEVEN-YEAR PERIOD. Evolution. 30(4). 848–850. 11 indexed citations

11.

Littlejohn, M. J.. (1971). A Reappraisal of Mating Call Differentiation in Hyla cadaverina (=Hyla californiae) and Hyla regilla. Evolution. 25(1). 98–98. 4 indexed citations

12.

Littlejohn, M. J., et al.. (1968). An Experimental Evaluation of Premating Isolation in the Hyla ewingi Complex (Anura: Hylidae). Evolution. 22(4). 659–659. 30 indexed citations

13.

Littlejohn, M. J. & R. S. Oldham. (1968). Rana pipiens Complex: Mating Call Structure and Taxonomy. Science. 162(3857). 1003–1005. 61 indexed citations

14.

Littlejohn, M. J. & Angus Martin. (1965). Mating Call Structure in Three Sympatric Species of Limnodynastes (Anura, Leptodactylidae). Copeia. 1965(4). 509–509. 4 indexed citations

15.

Littlejohn, M. J.. (1965). PREMATING ISOLATION IN THE HYLA EWINGI COMPLEX (ANURA: HYLIDAE). Evolution. 19(2). 234–243. 106 indexed citations

16.

Littlejohn, M. J. & Angus Martin. (1965). A New Species of Crinia (Anura: Leptodactylidae) from South Australia. Copeia. 1965(3). 319–319. 13 indexed citations

17.

Littlejohn, M. J.. (1964). Geographic Isolation and Mating Call Differentiation in Crinia signifera. Evolution. 18(2). 262–262. 6 indexed citations

18.

Littlejohn, M. J.. (1964). GEOGRAPHIC ISOLATION AND MATING CALL DIFFERENTIATION IN CRINIA SIGNIFERA. Evolution. 18(2). 262–266. 13 indexed citations

19.

Littlejohn, M. J., et al.. (1960). Patterns of Oviposition in Two Species of Hylid Frogs. The Southwestern Naturalist. 5(2). 92–92. 2 indexed citations

20.

Main, A. R., et al.. (1958). Evolution in Three Genera of Australian Frogs. Evolution. 12(2). 224–224. 15 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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