Tim J. Karels

1.1k total citations
21 papers, 743 citations indexed

About

Tim J. Karels is a scholar working on Ecology, Nature and Landscape Conservation and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, Tim J. Karels has authored 21 papers receiving a total of 743 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Ecology, 10 papers in Nature and Landscape Conservation and 10 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in Tim J. Karels's work include Animal Ecology and Behavior Studies (13 papers), Ecology and Vegetation Dynamics Studies (10 papers) and Wildlife Ecology and Conservation (9 papers). Tim J. Karels is often cited by papers focused on Animal Ecology and Behavior Studies (13 papers), Ecology and Vegetation Dynamics Studies (10 papers) and Wildlife Ecology and Conservation (9 papers). Tim J. Karels collaborates with scholars based in United States, Canada and France. Tim J. Karels's co-authors include Rudy Boonstra, Carolyn J. McColl, Charles J. Krebs, Andrea E. Byrom, David S. Hik, F. Stephen Dobson, Justin L. Brown, Seth P. D. Riley, Andrew A. Bryant and Amy L. Skibiel and has published in prestigious journals such as Nature, PLoS ONE and Ecology.

In The Last Decade

Tim J. Karels

21 papers receiving 683 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Tim J. Karels United States 15 572 298 212 98 80 21 743
Bradley J. Bergstrom United States 12 538 0.9× 154 0.5× 154 0.7× 102 1.0× 93 1.2× 24 660
Tracey K. Brown United States 5 522 0.9× 293 1.0× 146 0.7× 61 0.6× 66 0.8× 6 739
Inga‐Lill Persson Sweden 11 584 1.0× 189 0.6× 296 1.4× 54 0.6× 74 0.9× 14 808
Robert A. MacArthur Canada 19 791 1.4× 298 1.0× 175 0.8× 131 1.3× 121 1.5× 40 1.0k
Carlos E. Borghi Argentina 17 740 1.3× 258 0.9× 384 1.8× 72 0.7× 72 0.9× 77 1.0k
Bart van Lith Netherlands 9 358 0.6× 256 0.9× 185 0.9× 98 1.0× 107 1.3× 11 606
Anne G. Hertel Germany 14 531 0.9× 324 1.1× 109 0.5× 79 0.8× 99 1.2× 37 798
Julie A. K. Maier United States 11 640 1.1× 115 0.4× 161 0.8× 90 0.9× 101 1.3× 16 771
Alberto Gantz Chile 6 736 1.3× 199 0.7× 188 0.9× 97 1.0× 99 1.2× 22 819
Zbigniew Borowski Poland 17 497 0.9× 261 0.9× 194 0.9× 30 0.3× 86 1.1× 48 726

Countries citing papers authored by Tim J. Karels

Since Specialization
Citations

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

Fields of papers citing papers by Tim J. Karels

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tim J. Karels

This figure shows the co-authorship network connecting the top 25 collaborators of Tim J. Karels. A scholar is included among the top collaborators of Tim J. Karels 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 Tim J. Karels. Tim J. Karels 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.
Brown, Justin L., et al.. (2020). Effects of urbanization on resource use and individual specialization in coyotes (Canis latrans) in southern California. PLoS ONE. 15(2). e0228881–e0228881. 68 indexed citations
2.
Karels, Tim J., et al.. (2019). Bobcat and rabbit habitat use in an urban landscape. Journal of Mammalogy. 100(2). 401–409. 16 indexed citations
3.
Karels, Tim J., et al.. (2018). Estimates of Habitat Use by Rabbits (Sylvilagus spp.) from Fecal Pellet Counts Varies by Plot Design in Southern California. Western North American Naturalist. 78(1). 1–1. 1 indexed citations
4.
Karels, Tim J., et al.. (2015). Partitioning the effects of habitat fragmentation on rodent species richness in an urban landscape. Urban Ecosystems. 19(2). 547–560. 18 indexed citations
5.
Nolan, Paul M., F. Stephen Dobson, Marion Nicolaus, et al.. (2010). Mutual Mate Choice for Colorful Traits in King Penguins. Ethology. 116(7). 635–644. 39 indexed citations
6.
Skibiel, Amy L., et al.. (2008). Importance of Causal Analysis of Threats to Oceanic Avifaunas: Reply to Blackburn et al.. Conservation Biology. 22(2). 495–497. 1 indexed citations
7.
Skibiel, Amy L., et al.. (2006). Threats to Avifauna on Oceanic Islands. Conservation Biology. 21(1). 125–132. 37 indexed citations
8.
Gillis, Elizabeth A. L., David S. Hik, Rudy Boonstra, Tim J. Karels, & Charles J. Krebs. (2004). Being high is better: effects of elevation and habitat on arctic ground squirrel demography. Oikos. 108(2). 231–240. 35 indexed citations
9.
Karels, Tim J., Andrew A. Bryant, & David S. Hik. (2004). Comparison of discriminant function and classification tree analyses for age classification of marmots. Oikos. 105(3). 575–587. 57 indexed citations
10.
Karels, Tim J., et al.. (2004). Fecal Pellet Counts as a Technique for Monitoring an Alpine-Dwelling Social Rodent, the Hoary Marmot (Marmota caligata). Arctic Antarctic and Alpine Research. 36(4). 490–494. 26 indexed citations
11.
Karels, Tim J. & Rudy Boonstra. (2003). Reducing Solar Heat Gain during Winter: The Role of White Bark in Northern Deciduous Trees. ARCTIC. 56(2). 5 indexed citations
12.
Boonstra, Rudy, Carolyn J. McColl, & Tim J. Karels. (2001). REPRODUCTION AT ALL COSTS: THE ADAPTIVE STRESS RESPONSE OF MALE ARCTIC GROUND SQUIRRELS. Ecology. 82(7). 1930–1946. 126 indexed citations
13.
Boonstra, Rudy, Carolyn J. McColl, & Tim J. Karels. (2001). Reproduction at All Costs: The Adaptive Stress Response of Male Arctic Ground Squirrels. Ecology. 82(7). 1930–1930. 10 indexed citations
14.
Karels, Tim J. & Rudy Boonstra. (2000). Concurrent density dependence and independence in populations of arctic ground squirrels. Nature. 408(6811). 460–463. 61 indexed citations
15.
Karels, Tim J., Andrea E. Byrom, Rudy Boonstra, & Charles J. Krebs. (2000). The interactive effects of food and predators on reproduction and overwinter survival of arctic ground squirrels. Journal of Animal Ecology. 69(2). 235–247. 95 indexed citations
16.
Byrom, Andrea E., Tim J. Karels, Charles J. Krebs, & Rudy Boonstra. (2000). Experimental manipulation of predation and food supply of arctic ground squirrels in the boreal forest. Canadian Journal of Zoology. 78(8). 1309–1319. 11 indexed citations
17.
Byrom, Andrea E., Tim J. Karels, Charles J. Krebs, & Rudy Boonstra. (2000). Experimental manipulation of predation and food supply of arctic ground squirrels in the boreal forest. Canadian Journal of Zoology. 78(8). 1309–1319. 46 indexed citations
18.
Hubbs, Anne, Tim J. Karels, & Rudy Boonstra. (2000). Indices of Population Size for Burrowing Mammals. Journal of Wildlife Management. 64(1). 296–296. 29 indexed citations
19.
Ben‐David, Merav, Carolyn J. McColl, Rudy Boonstra, & Tim J. Karels. (1999). 15N signatures do not reflect body condition in Arctic ground squirrels. Canadian Journal of Zoology. 77(9). 1373–1378. 39 indexed citations
20.
Karels, Tim J., et al.. (1996). Tree-climbing by Arctic Ground Squirrels, Spermophilus parryii, in the southwestern Yukon Territory. The Canadian Field-Naturalist. 110(3). 533–534. 5 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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