I. Valentine

727 total citations
35 papers, 532 citations indexed

About

I. Valentine is a scholar working on Agronomy and Crop Science, Forestry and Soil Science. According to data from OpenAlex, I. Valentine has authored 35 papers receiving a total of 532 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Agronomy and Crop Science, 16 papers in Forestry and 9 papers in Soil Science. Recurrent topics in I. Valentine's work include Ruminant Nutrition and Digestive Physiology (16 papers), Pasture and Agricultural Systems (13 papers) and Soil Carbon and Nitrogen Dynamics (8 papers). I. Valentine is often cited by papers focused on Ruminant Nutrition and Digestive Physiology (16 papers), Pasture and Agricultural Systems (13 papers) and Soil Carbon and Nitrogen Dynamics (8 papers). I. Valentine collaborates with scholars based in New Zealand, Australia and Chile. I. Valentine's co-authors include Peter Kemp, John Hodgson, A. D. Mackay, Richard Bawden, M. G. Lambert, Ignacio F. López, David Barker, Zhongnan Nie, Daowei Zhou and Duncan Hedderley and has published in prestigious journals such as Journal of Environmental Management, Plant and Soil and Agriculture Ecosystems & Environment.

In The Last Decade

I. Valentine

34 papers receiving 476 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
I. Valentine New Zealand 14 158 137 118 110 104 35 532
A. Budelman Netherlands 14 127 0.8× 180 1.3× 148 1.3× 145 1.3× 139 1.3× 26 498
Thomas L. Nordblom Australia 13 138 0.9× 86 0.6× 93 0.8× 235 2.1× 89 0.9× 73 595
C. K. McDonald Australia 11 198 1.3× 116 0.8× 37 0.3× 111 1.0× 136 1.3× 30 525
Rein van der Hoek Colombia 11 88 0.6× 91 0.7× 117 1.0× 67 0.6× 85 0.8× 21 381
Michel Duru France 10 75 0.5× 89 0.6× 62 0.5× 140 1.3× 170 1.6× 20 489
Janet Riley United Kingdom 13 164 1.0× 59 0.4× 106 0.9× 365 3.3× 69 0.7× 30 652
Neil D. MacLeod Australia 15 241 1.5× 216 1.6× 61 0.5× 53 0.5× 161 1.5× 49 746
Didier Génin France 15 71 0.4× 104 0.8× 38 0.3× 102 0.9× 139 1.3× 40 555
Kenneth M. Menz Australia 11 81 0.5× 52 0.4× 57 0.5× 159 1.4× 79 0.8× 51 454
Anthony A. Kimaro Tanzania 14 162 1.0× 91 0.7× 192 1.6× 194 1.8× 175 1.7× 30 655

Countries citing papers authored by I. Valentine

Since Specialization
Citations

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

Fields of papers citing papers by I. Valentine

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of I. Valentine

This figure shows the co-authorship network connecting the top 25 collaborators of I. Valentine. A scholar is included among the top collaborators of I. Valentine 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 I. Valentine. I. Valentine 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.
Valentine, I., et al.. (2007). Spatially explicit modelling of the impact of climate changes on pasture production in the North Island,New Zealand. Climatic Change. 84(2). 203–216. 17 indexed citations
2.
López, Ignacio F., I. Valentine, M. G. Lambert, Duncan Hedderley, & Peter Kemp. (2006). Plant functional groups in a heterogeneous environment. New Zealand Journal of Agricultural Research. 49(4). 439–450. 13 indexed citations
3.
Valentine, I., et al.. (2006). Principles and processes for effecting change in environmental management in New Zealand. Journal of Environmental Management. 82(3). 311–318. 25 indexed citations
4.
Wang, Ping, et al.. (2006). Seed maturity and harvest time effects seed quantity and quality of Hordeum brevisubulatum. Seed Science and Technology. 34(1). 125–132. 9 indexed citations
5.
Valentine, I., et al.. (2005). Modelling the productivity of naturalised pasture in the North Island, New Zealand: a decision tree approach. Ecological Modelling. 186(3). 299–311. 23 indexed citations
6.
Valentine, I., et al.. (2004). Modelling hill country pasture production: a decision tree approach. Proceedings of the New Zealand Grassland Association. 195–201. 3 indexed citations
7.
Gray, David, W.J. Parker, Peter Kemp, et al.. (2003). Feed planning - alternative approaches used by farmers. Proceedings of the New Zealand Grassland Association. 211–217. 5 indexed citations
8.
9.
López, Ignacio F., John Hodgson, Duncan Hedderley, I. Valentine, & M. G. Lambert. (2003). Selective defoliation by sheep according to slope and plant species in the hill country of New Zealand. Grass and Forage Science. 58(4). 339–349. 26 indexed citations
10.
Pearson, Craig J., Heping Zuo, I. Valentine, & M. Unkovich. (2003). Sustainability of Grazing Systems: Feed Base, Critical Grazing Pressure and Variability. International Journal of Agricultural Sustainability. 1(2). 95–107. 7 indexed citations
11.
Valentine, I., et al.. (2000). Pasture damage and regrowth from cattle treading. Proceedings of the New Zealand Grassland Association. 155–160. 23 indexed citations
12.
Kemp, Peter, et al.. (2000). Shade tolerance of pasture species in relation to deciduous tree, temperate silvopastoral systems.. 30. 101–107. 8 indexed citations
13.
Nie, Zhongnan, David Barker, I. Valentine, A. D. Mackay, & John Hodgson. (1999). Changes in the population of germinated seed in a hill pasture during and after a pastoral fallow. Grass and Forage Science. 4 indexed citations
14.
Nie, Zhongnan, David Barker, A. D. Mackay, I. Valentine, & John Hodgson. (1998). Influence of the timing and duration of pastoral fallowing and nitrogen fertiliser on pasture and white clover ( Trifolium repens ) growth in hill country. New Zealand Journal of Agricultural Research. 41(1). 19–29. 8 indexed citations
15.
Devkota, Naba Raj, Peter Kemp, I. Valentine, & John Hodgson. (1998). Pelformance of perennial ryegrass and cocksfoot cultivars under tree shade. 1 indexed citations
16.
Millner, James P., et al.. (1994). Effect of late nitrogen on the yield and quality of spring sown ‘Rongotea’ wheat. New Zealand Journal of Crop and Horticultural Science. 22(2). 187–194. 3 indexed citations
17.
Valentine, I., et al.. (1994). A comparative study of the resistance and resilience of hill country pasture species exposed to water deficit stress. 1 indexed citations
18.
Valentine, I., et al.. (1993). Goals and management strategies of dairy farmers. Proceedings of the New Zealand Society of Animal Production. 53. 111–114. 5 indexed citations
19.
Valentine, I. & Richard Bawden. (1984). Learning to be a Capable Systems Agriculturalist. 21(4). 273–287. 13 indexed citations
20.
Bawden, Richard, et al.. (1984). Systems thinking and practices in the education of agriculturalists. Agricultural Systems. 13(4). 205–225. 90 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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