Julius O. Manyala

735 total citations
49 papers, 468 citations indexed

About

Julius O. Manyala is a scholar working on Ecology, Aquatic Science and Global and Planetary Change. According to data from OpenAlex, Julius O. Manyala has authored 49 papers receiving a total of 468 indexed citations (citations by other indexed papers that have themselves been cited), including 34 papers in Ecology, 29 papers in Aquatic Science and 14 papers in Global and Planetary Change. Recurrent topics in Julius O. Manyala's work include Aquatic Ecosystems and Biodiversity (28 papers), Fish Biology and Ecology Studies (24 papers) and Marine and fisheries research (14 papers). Julius O. Manyala is often cited by papers focused on Aquatic Ecosystems and Biodiversity (28 papers), Fish Biology and Ecology Studies (24 papers) and Marine and fisheries research (14 papers). Julius O. Manyala collaborates with scholars based in Kenya, United States and South Africa. Julius O. Manyala's co-authors include K. Fitzsimmons, Kevin Obiero, Bryan O. Nyawanda, Frank O. Masese, Jonathan Munguti, Boaz Kaunda‐Arara, Herwig Waidbacher, Cosmas N. Munga, Andrew Wamukota and Edward Kimani and has published in prestigious journals such as SHILAP Revista de lepidopterología, Aquaculture and Marine Policy.

In The Last Decade

Julius O. Manyala

47 papers receiving 445 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Julius O. Manyala Kenya 12 215 208 109 90 41 49 468
Daniel Jamu Malawi 13 174 0.8× 167 0.8× 115 1.1× 79 0.9× 21 0.5× 31 447
Ahmed Nasr-Allah Malaysia 14 135 0.6× 289 1.4× 133 1.2× 54 0.6× 34 0.8× 35 540
Andrew Ropicki United States 12 108 0.5× 210 1.0× 239 2.2× 101 1.1× 40 1.0× 29 658
Steve Amisah Ghana 13 100 0.5× 122 0.6× 81 0.7× 50 0.6× 25 0.6× 38 452
Janaina Mitsue Kimpara Brazil 11 120 0.6× 223 1.1× 117 1.1× 78 0.9× 53 1.3× 20 453
Patricia Moraes‐Valenti Brazil 14 270 1.3× 545 2.6× 248 2.3× 226 2.5× 64 1.6× 18 838
Safina Musa Kenya 12 211 1.0× 202 1.0× 69 0.6× 69 0.8× 23 0.6× 40 398
G. de Graaf Italy 13 289 1.3× 266 1.3× 206 1.9× 260 2.9× 59 1.4× 15 641
So‐Jung Youn United Kingdom 3 188 0.9× 113 0.5× 128 1.2× 233 2.6× 29 0.7× 4 408
Tumi Tómasson Iceland 14 196 0.9× 233 1.1× 101 0.9× 156 1.7× 49 1.2× 43 591

Countries citing papers authored by Julius O. Manyala

Since Specialization
Citations

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

Fields of papers citing papers by Julius O. Manyala

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Julius O. Manyala. 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 Julius O. Manyala. The network helps show where Julius O. Manyala may publish in the future.

Co-authorship network of co-authors of Julius O. Manyala

This figure shows the co-authorship network connecting the top 25 collaborators of Julius O. Manyala. A scholar is included among the top collaborators of Julius O. Manyala 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 Julius O. Manyala. Julius O. Manyala 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.
McKay, R. Michael L., et al.. (2024). Introduction to the special section: Aquatic resources for a sustainable future and blue economy prosperity for the African Great Lakes region. Journal of Great Lakes Research. 50(5). 102413–102413. 2 indexed citations
2.
Manyala, Julius O., et al.. (2024). Dynamical Analysis of Prey Refuge Effects on the Stability of Holling Type III Four-species Predator-Prey System. Results in Control and Optimization. 14. 100390–100390. 3 indexed citations
3.
4.
Yongo, Edwine, et al.. (2022). Aspects of the biology and population structure of Oreochromis niloticus, Coptodon zillii and Oreochromis leucostictus tilapia in Lake Naivasha, Kenya. Lakes & Reservoirs Science Policy and Management for Sustainable Use. 27(1). 3 indexed citations
5.
Masese, Frank O., et al.. (2021). Assessment of the Performance of Aquaponics and its Uptake for Integrated Fish and Plant Farming in Sub-Saharan Africa. 4(2). 123–138. 1 indexed citations
6.
Nyingi, Wanja Dorothy, Christopher Mulanda Aura, Kevin Obiero, et al.. (2021). Reconstructing Kenya’s total freshwater fisheries catches: 1950–2017. Marine and Freshwater Research. 73(1). 57–70. 12 indexed citations
7.
Obiero, Kevin, et al.. (2020). Gender roles and constraints in the aquaculture value chain in Western Kenya. African Journal of Agricultural Research. 16(5). 732–745. 20 indexed citations
8.
Wamukota, Andrew, et al.. (2020). Analysis of constraints and opportunities in marine small-scale fisheries value chain: A multi-criteria decision approach. Ocean & Coastal Management. 189. 105151–105151. 24 indexed citations
9.
Manyala, Julius O., et al.. (2020). Effect of hybridization on reproductive performance of Oreochromis karongae , Oreochromis shiranus and Oreochromis mossambicus. Aquaculture Research. 52(1). 302–308. 1 indexed citations
10.
Wamukota, Andrew, et al.. (2020). Actors’ perceptions of government performance in support of value chain development in marine small-scale fisheries in Kenya. Marine Policy. 122. 104221–104221. 9 indexed citations
11.
Munga, Cosmas N., et al.. (2019). Stock status and some biological aspects of Lethrinus lentjan (Lacapede, 1802) from the south coast of Kenya. Western Indian Ocean Journal of Marine Science. 18(2). 69–76. 1 indexed citations
12.
Manyala, Julius O., et al.. (2018). Influence of salt works’ hyper-saline waste-brine on distribution of mangrove crabs (Decapoda) along the Gongoni-Kurawa intertidal area, North Coast Kenya. 4(3). 14–27. 1 indexed citations
13.
Yongo, Edwine, et al.. (2018). Shifts in the food of Nile perch (Lates niloticus) in Lake Victoria. Lakes & Reservoirs Science Policy and Management for Sustainable Use. 24(1). 13–17. 5 indexed citations
14.
Kaunda‐Arara, Boaz, Cosmas N. Munga, Julius O. Manyala, et al.. (2016). Spatial variation in benthopelagic fish assemblage structure along coastal East Africa from recent bottom trawl surveys. Regional Studies in Marine Science. 8. 201–209. 10 indexed citations
15.
Manyala, Julius O., et al.. (2015). Low-cost tilapia production with fertilization and supplementary feeding.. 46(1). 43–46. 1 indexed citations
16.
Masese, Frank O., Julius O. Manyala, Lazare Etiégni, et al.. (2010). Impact of a Kraft Pulp and Paper Mill Effluent on Phytoplankton and Macroinvertebrates in River Nzoia, Kenya. Water Quality Research Journal. 45(2). 235–250. 7 indexed citations
17.
Manyala, Julius O., et al.. (2007). Survival of the Lake Victoria Rastrineobola argentea in a rapidly changing environment:Biotic and abiotic interactions. Aquatic Ecosystem Health & Management. 10(4). 407–415. 17 indexed citations
18.
19.
Manyala, Julius O., E. Vanden Berghe, & S. Dadzie. (1995). Mortality, exploitation rate and relative yield of Rastrineobola argentea (Pellegrin 1904) in the Winam Gulf of Lake Victoria (Kenya). Scientia Marina. 59(3). 555–563. 4 indexed citations
20.
Manyala, Julius O.. (1993). Growth, mortality and mesh size selection of Dagaa, Rastrineobola argentea, in the Winam Gulf of Lake Victoria (Kenya). 4 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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