Ian Heap

5.7k total citations · 3 hit papers
18 papers, 4.3k citations indexed

About

Ian Heap is a scholar working on Plant Science, Pollution and Molecular Biology. According to data from OpenAlex, Ian Heap has authored 18 papers receiving a total of 4.3k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Plant Science, 5 papers in Pollution and 4 papers in Molecular Biology. Recurrent topics in Ian Heap's work include Weed Control and Herbicide Applications (15 papers), Allelopathy and phytotoxic interactions (5 papers) and Pesticide and Herbicide Environmental Studies (5 papers). Ian Heap is often cited by papers focused on Weed Control and Herbicide Applications (15 papers), Allelopathy and phytotoxic interactions (5 papers) and Pesticide and Herbicide Environmental Studies (5 papers). Ian Heap collaborates with scholars based in United States, Canada and Australia. Ian Heap's co-authors include Stephen O. Duke, Rob Knight, Hugh J. Beckie, Linda M. Hall, Reid J. Smeda, Ian N. Morrison, H. Loeppky, Philip Westra, Joel Torra and Mithila Jugulam and has published in prestigious journals such as PLoS ONE, Pest Management Science and Weed Science.

In The Last Decade

Ian Heap

17 papers receiving 4.0k 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.

International survey of herbicide-resistant weeds

1997 2.5k citations Ian Heap profile →
Global perspective of herbicide‐resistant weeds

2013 471 citations Ian Heap Pest Management Science profile →
Overview of glyphosate‐resistant weeds worldwide

2017 377 citations Ian Heap, Stephen O. Duke Pest Management Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ian Heap United States	13	4.0k	1.7k	1.1k	735	361	18	4.3k
Philip Westra United States	36	3.7k 0.9×	1.4k 0.8×	1.3k 1.2×	752 1.0×	328 0.9×	139	4.1k
Micheal D. K. Owen United States	33	3.1k 0.8×	1.1k 0.6×	873 0.8×	600 0.8×	279 0.8×	135	3.4k
John W. Wilcut United States	37	4.6k 1.2×	1.8k 1.0×	764 0.7×	1.1k 1.6×	197 0.5×	212	4.8k
Carol Mallory‐Smith United States	34	3.6k 0.9×	1.1k 0.6×	1.5k 1.3×	618 0.8×	514 1.4×	155	4.0k
Nilda R. Burgos United States	37	5.0k 1.3×	1.7k 1.0×	1.2k 1.1×	814 1.1×	330 0.9×	163	5.4k
Kassim Al‐Khatib United States	33	3.4k 0.8×	1.1k 0.6×	681 0.6×	617 0.8×	297 0.8×	167	3.6k
Alan C. York United States	30	3.4k 0.9×	1.5k 0.8×	754 0.7×	681 0.9×	163 0.5×	160	3.6k
Stephen C. Weller United States	32	2.7k 0.7×	908 0.5×	933 0.8×	425 0.6×	249 0.7×	105	3.2k
Loyd M. Wax United States	39	3.8k 1.0×	1.3k 0.8×	482 0.4×	824 1.1×	324 0.9×	124	4.2k
Peter H. Sikkema Canada	31	4.3k 1.1×	2.0k 1.2×	533 0.5×	1.1k 1.4×	278 0.8×	402	4.7k

Countries citing papers authored by Ian Heap

Since Specialization

Citations

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

Fields of papers citing papers by Ian Heap

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ian Heap

This figure shows the co-authorship network connecting the top 25 collaborators of Ian Heap. A scholar is included among the top collaborators of Ian Heap 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 Ian Heap. Ian Heap 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:

18 of 18 papers shown

1.

Duke, Stephen O., et al.. (2021). How Many Ways Can Nature Kill the Goose That Laid the Golden Egg? – The Many Mechanisms of Evolved Glyphosate Resistance. Outlooks on Pest Management. 32(5). 197–202. 2 indexed citations

2.

Busi, Roberto, Danica E. Goggin, Ian Heap, et al.. (2017). Weed resistance to synthetic auxin herbicides. Pest Management Science. 74(10). 2265–2276. 145 indexed citations

3.

Heap, Ian & Stephen O. Duke. (2017). Overview of glyphosate‐resistant weeds worldwide. Pest Management Science. 74(5). 1040–1049. 377 indexed citations breakdown →

4.

Holt, Jodie S., Katia Silvera, Ian Heap, et al.. (2013). Taxonomic and Life History Bias in Herbicide Resistant Weeds: Implications for Deployment of Resistant Crops. PLoS ONE. 8(9). e71916–e71916. 26 indexed citations

5.

Heap, Ian. (2013). Global perspective of herbicide‐resistant weeds. Pest Management Science. 70(9). 1306–1315. 471 indexed citations breakdown →

6.

Valverde, Bernal E. & Ian Heap. (2009). El estado actual de la resistencia a herbicidas en el mundo. 1 indexed citations

7.

Heap, Ian. (2008). International survey of herbicide-resistant weeds - survey results and criteria to add cases. 1822. 68–70. 13 indexed citations

8.

Heap, Ian. (2005). Identification and documentation of herbicide resistance. Phytoprotection. 75(4). 85–90. 14 indexed citations

9.

Heap, Ian, H. S. Jacob, J. Dodd, & J. H. Moore. (2002). Herbicide resistance - Australia vs. the rest of the world.. 645–649. 4 indexed citations

10.

Beckie, Hugh J., Ian Heap, Reid J. Smeda, & Linda M. Hall. (2000). Screening for Herbicide Resistance in Weeds¹. Weed Technology. 14(2). 428–445. 171 indexed citations

11.

Heap, Ian. (1999). International survey of herbicide-resistant weeds: lessons and limitations.. 769–776. 21 indexed citations

12.

Heap, Ian. (1997). The occurrence of herbicide-resistant weeds worldwide. Pesticide Science. 51(3). 235–243. 215 indexed citations

13.

Heap, Ian. (1997). International survey of herbicide-resistant weeds. 2547 indexed citations breakdown →

14.

Heap, Ian & Ian N. Morrison. (1996). Resistance to Aryloxyphenoxypropionate and Cyclohexanedione Herbicides in Green Foxtail (Setaria virdis). Weed Science. 44(1). 25–30. 34 indexed citations

15.

Heap, Ian, et al.. (1993). Resistance to Aryloxyphenoxypropionate and Cyclohexanedione Herbicides in Wild Oat (Avena fatua). Weed Science. 41(2). 232–238. 88 indexed citations

16.

Heap, Ian, et al.. (1991). In vitro vegetative propagation of Chinese cabbage. Plant Cell Tissue and Organ Culture (PCTOC). 26(2). 135–139. 4 indexed citations

17.

Heap, Ian, et al.. (1987). Herbicide cross-resistance in a population of annual ryegrass, Lolium rigidum.. 114–118. 7 indexed citations

18.

Heap, Ian & Rob Knight. (1986). The occurrence of herbicide cross-resistance in a population of annual ryegrass, Lolium rigidum , resistant to diclofop-methyl. Australian Journal of Agricultural Research. 37(2). 149–156. 134 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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