Casey C. O’Hara

2.0k total citations · 2 hit papers
20 papers, 1.2k citations indexed

About

Casey C. O’Hara is a scholar working on Ecology, Global and Planetary Change and Management, Monitoring, Policy and Law. According to data from OpenAlex, Casey C. O’Hara has authored 20 papers receiving a total of 1.2k 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 8 papers in Management, Monitoring, Policy and Law. Recurrent topics in Casey C. O’Hara's work include Coral and Marine Ecosystems Studies (9 papers), Coastal and Marine Management (7 papers) and Marine and fisheries research (7 papers). Casey C. O’Hara is often cited by papers focused on Coral and Marine Ecosystems Studies (9 papers), Coastal and Marine Management (7 papers) and Marine and fisheries research (7 papers). Casey C. O’Hara collaborates with scholars based in United States, Australia and Spain. Casey C. O’Hara's co-authors include Benjamin S. Halpern, Melanie Frazier, Jamie C. Afflerbach, Julia Stewart Lowndes, Courtney Scarborough, Fiorenza Micheli, Kimberly A. Selkoe, Ning Jiang, Benjamin D. Best and Juan Carlos Villaseñor‐Derbez and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and PLoS ONE.

In The Last Decade

Casey C. O’Hara

18 papers receiving 1.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Recent pace of change in human impact on the world’s ocean

2019 559 citations Benjamin S. Halpern, Melanie Frazier et al. Scientific Reports profile →
At-risk marine biodiversity faces extensive, expanding, and intensifying human impacts

2021 145 citations Casey C. O’Hara, Melanie Frazier et al. Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Casey C. O’Hara United States	12	635	488	315	267	107	20	1.2k
Jamie C. Afflerbach United States	10	580 0.9×	536 1.1×	320 1.0×	356 1.3×	122 1.1×	13	1.2k
Courtney Scarborough United States	16	738 1.2×	624 1.3×	439 1.4×	311 1.2×	135 1.3×	23	1.4k
Benjamin D. Best United States	17	1.0k 1.6×	551 1.1×	212 0.7×	293 1.1×	300 2.8×	25	1.5k
Lauren V. Weatherdon United Kingdom	12	601 0.9×	339 0.7×	163 0.5×	205 0.8×	87 0.8×	20	1.1k
Julia Stewart Lowndes United States	10	1.3k 2.1×	1.0k 2.1×	687 2.2×	640 2.4×	191 1.8×	14	2.2k
Eduardo Klein Venezuela	16	667 1.1×	439 0.9×	112 0.4×	515 1.9×	91 0.9×	44	1.3k
Jess Melbourne-Thomas Australia	24	865 1.4×	750 1.5×	242 0.8×	439 1.6×	145 1.4×	78	1.5k
Christina A. Buelow Australia	14	723 1.1×	337 0.7×	159 0.5×	272 1.0×	98 0.9×	34	1.0k
Rebecca Martone United States	20	774 1.2×	631 1.3×	398 1.3×	264 1.0×	162 1.5×	31	1.3k
Juan Mayorga United States	13	1.0k 1.6×	1.2k 2.4×	442 1.4×	253 0.9×	285 2.7×	20	2.0k

Countries citing papers authored by Casey C. O’Hara

Since Specialization

Citations

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

Fields of papers citing papers by Casey C. O’Hara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Casey C. O’Hara. 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 Casey C. O’Hara. The network helps show where Casey C. O’Hara may publish in the future.

Co-authorship network of co-authors of Casey C. O’Hara

This figure shows the co-authorship network connecting the top 25 collaborators of Casey C. O’Hara. A scholar is included among the top collaborators of Casey C. O’Hara 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 Casey C. O’Hara. Casey C. O’Hara 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

Halpern, Benjamin S., et al.. (2025). Cumulative impacts to global marine ecosystems projected to more than double by mid-century. Science. 389(6766). 1216–1219. 5 indexed citations

Blanchard, Julia L., et al.. (2025). Continued transitions from fish meal and oil in aquafeeds require close attention to habitat impact trade-offs. 2(10). 100457–100457.

Mattalia, Giulia, Alex C. McAlvay, Irene Teixidor‐Toneu, et al.. (2024). Cultural keystone species as a tool for biocultural stewardship. A global review. People and Nature. 7(5). 947–959. 10 indexed citations

O’Hara, Casey C., Nathalie Butt, Benjamin S. Halpern, et al.. (2024). Spatial and life history variation in a trait-based species vulnerability and impact model. PLoS ONE. 19(6). e0305950–e0305950.

O’Hara, Casey C., Melanie Frazier, Mireia Valle, et al.. (2024). Cumulative human impacts on global marine fauna highlight risk to biological and functional diversity. PLoS ONE. 19(9). e0309788–e0309788. 8 indexed citations

Reyes-García, Victòria, Rodrigo Cámara‐Leret, Benjamin S. Halpern, et al.. (2023). Biocultural vulnerability exposes threats of culturally important species. Proceedings of the National Academy of Sciences. 120(2). e2217303120–e2217303120. 41 indexed citations

Froehlich, Halley E., et al.. (2023). Biological life‐history and farming scenarios of marine aquaculture to help reduce wild marine fishing pressure. Fish and Fisheries. 24(6). 1034–1047. 8 indexed citations

Simmons, B. Alexander, Nathalie Butt, Casey C. O’Hara, et al.. (2022). China’s global development finance poses heterogeneous risks to coastal and marine socio-ecological systems. One Earth. 5(12). 1377–1393. 4 indexed citations

O’Hara, Casey C. & Benjamin S. Halpern. (2022). Anticipating the Future of the World's Ocean. Annual Review of Environment and Resources. 47(1). 291–315. 11 indexed citations

10.

Roberson, Leslie, Hawthorne L. Beyer, Casey C. O’Hara, et al.. (2021). Multinational coordination required for conservation of over 90% of marine species. Global Change Biology. 27(23). 6206–6216. 11 indexed citations

11.

O’Hara, Casey C., Melanie Frazier, & Benjamin S. Halpern. (2021). At-risk marine biodiversity faces extensive, expanding, and intensifying human impacts. Science. 372(6537). 84–87. 145 indexed citations breakdown →

12.

O’Hara, Casey C., Courtney Scarborough, Karen L. Hunter, et al.. (2020). Changes in ocean health in British Columbia from 2001 to 2016. PLoS ONE. 15(1). e0227502–e0227502. 6 indexed citations

13.

Beck, Marcus W., Casey C. O’Hara, Julia Stewart Lowndes, et al.. (2020). The importance of open science for biological assessment of aquatic environments. PeerJ. 8. e9539–e9539. 19 indexed citations

14.

Friedman, Whitney R., Benjamin S. Halpern, Elizabeth Mcleod, et al.. (2020). Research Priorities for Achieving Healthy Marine Ecosystems and Human Communities in a Changing Climate. Frontiers in Marine Science. 7. 43 indexed citations

15.

Halpern, Benjamin S., Melanie Frazier, Jamie C. Afflerbach, et al.. (2019). Recent pace of change in human impact on the world’s ocean. Scientific Reports. 9(1). 11609–11609. 559 indexed citations breakdown →

16.

O’Hara, Casey C., Juan Carlos Villaseñor‐Derbez, Gina M. Ralph, & Benjamin S. Halpern. (2019). Mapping status and conservation of global at‐risk marine biodiversity. Conservation Letters. 12(4). 42 indexed citations

17.

Burgass, Michael J., E.J. Milner‐Gulland, Julia Stewart Lowndes, et al.. (2018). A pan-Arctic assessment of the status of marine social-ecological systems. Regional Environmental Change. 19(1). 293–308. 22 indexed citations

18.

O’Hara, Casey C., Jamie C. Afflerbach, Courtney Scarborough, Kristin Kaschner, & Benjamin S. Halpern. (2017). Aligning marine species range data to better serve science and conservation. PLoS ONE. 12(5). e0175739–e0175739. 29 indexed citations

19.

Halpern, Benjamin S., Melanie Frazier, Jamie C. Afflerbach, et al.. (2017). Drivers and implications of change in global ocean health over the past five years. PLoS ONE. 12(7). e0178267–e0178267. 39 indexed citations

20.

Lowndes, Julia Stewart, Benjamin D. Best, Courtney Scarborough, et al.. (2017). Our path to better science in less time using open data science tools. Nature Ecology & Evolution. 1(6). 160–160. 164 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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