J Visagie

496 total citations
14 papers, 390 citations indexed

About

J Visagie is a scholar working on Ecology, Global and Planetary Change and Nature and Landscape Conservation. According to data from OpenAlex, J Visagie has authored 14 papers receiving a total of 390 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Ecology, 9 papers in Global and Planetary Change and 6 papers in Nature and Landscape Conservation. Recurrent topics in J Visagie's work include Avian ecology and behavior (13 papers), Marine and fisheries research (9 papers) and Marine animal studies overview (3 papers). J Visagie is often cited by papers focused on Avian ecology and behavior (13 papers), Marine and fisheries research (9 papers) and Marine animal studies overview (3 papers). J Visagie collaborates with scholars based in South Africa, United Kingdom and Falkland Islands. J Visagie's co-authors include Les G Underhill, Leshia Upfold, BM Dyer, RJM Crawford, Res Altwegg, Peter G. Ryan, Lorien Pichegru, Joël M. Durant, Ashley J. Williams and Peter Barham and has published in prestigious journals such as Marine Ecology Progress Series, Ecology and Evolution and African Journal of Marine Science.

In The Last Decade

J Visagie

14 papers receiving 370 citations

Peers

Countries citing papers authored by J Visagie

Since Specialization

Citations

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

Fields of papers citing papers by J Visagie

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J Visagie

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

All Works

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14 of 14 papers shown

#	Work	Indexed citations
1	The conservation status and population decline of the African penguin deconstructed in space and time 2020 ·Ecology and Evolution ·Richard B. Sherley, Robert J. M. Crawford, (unknown), Bruce M. Dyer, (unknown), Christina Hagen, Jessica Kemper, Azwianewi B. Makhado, Lorien Pichegru, (unknown), Leshia Upfold, J Visagie, Lauren J. Waller, Henning Winker	35
2	Cape cormorants decrease, move east and adapt foraging strategies following eastward displacement of their main prey 2016 ·African Journal of Marine Science ·RJM Crawford, (unknown), (unknown), Peter G. Ryan, BM Dyer, Rebecca J. Fox, (unknown), (unknown), (unknown), (unknown), Leshia Upfold, J Visagie, (unknown), (unknown), (unknown), (unknown)	13
3	South Africa's coastal-breeding white-breasted cormorants: population trends, breeding season and movements, and diet 2013 ·African Journal of Marine Science ·RJM Crawford, (unknown), (unknown), Lauren J. Waller, BM Dyer, D. Gordon Allan, Caroline H. Fox, (unknown), Leshia Upfold, J Visagie, (unknown), (unknown), Colleen T. Downs, Rebecca J. Fox, (unknown), (unknown), W. H. Oosthuizen, Peter G. Ryan, (unknown), Jane Turpie	9
4	Trends in numbers of crowned cormorants in South Africa, with information on diet 2012 ·African Journal of Marine Science ·RJM Crawford, BM Dyer, (unknown), (unknown), (unknown), Leshia Upfold, J Visagie, Lauren J. Waller	9
5	Collapse of South Africa's penguins in the early 21st century 2011 ·African Journal of Marine Science ·RJM Crawford, Res Altwegg, (unknown), Peter Barham, Joël M. Durant, BM Dyer, (unknown), (unknown), Lorien Pichegru, Peter G. Ryan, Les G Underhill, Leshia Upfold, J Visagie, (unknown), (unknown)	127
6	Influence of feeding conditions on breeding of African penguins—importance of adequate local food supplies 2010 ·Marine Ecology Progress Series ·Joël M. Durant, (unknown), (unknown), (unknown), J Visagie, Leshia Upfold, Nils Chr. Stenseth	21
7	Breeding and moult phenology of African penguins Spheniscus demersus at Dassen Island 2009 ·African Journal of Marine Science ·A. C. Wolfaardt, Les G Underhill, J Visagie	12
8	Summer survey of fur seals at Prince Edward Island, southern Indian Ocean 2009 ·African Journal of Marine Science ·M.N. Bester, Peter G. Ryan, J Visagie	10
9	Breeding success of African penguinsSpheniscus demersusat Dassen Island, especially after oiling following theApollo Seaspill 2008 ·African Journal of Marine Science ·(unknown), Les G Underhill, (unknown), Ashley J. Williams, J Visagie	22
10	Restoration of oiled African penguinsSpheniscus demersusa decade after theApollo Seaspill 2008 ·African Journal of Marine Science ·(unknown), Les G Underhill, Res Altwegg, J Visagie	26
11	Impact of theTreasureoil spill on African penguinsSpheniscus demersusat Dassen Island: case study of a rescue operation 2008 ·African Journal of Marine Science ·(unknown), Les G Underhill, Res Altwegg, J Visagie, Ashley J. Williams	21
12	Recent distributional changes of seabirds in South Africa: is climate having an impact? 2008 ·African Journal of Marine Science ·RJM Crawford, (unknown), (unknown), J Visagie, Leshia Upfold, (unknown), (unknown), BM Dyer	39
13	African Black Oystercatchers feeding in a terrestrial habitat 2008 ·Ostrich ·Peter G. Ryan, J Visagie	2
14	Regionally coherent trends in colonies of African penguinsSpheniscus demersusin the Western Cape, South Africa, 1987–2005 2006 ·African Journal of Marine Science ·Les G Underhill, RJM Crawford, (unknown), (unknown), BM Dyer, T. Mario Leshoro, (unknown), Leshia Upfold, J Visagie	44

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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