N. J. Ledgard

721 total citations
26 papers, 564 citations indexed

About

N. J. Ledgard is a scholar working on Nature and Landscape Conservation, Ecology and Global and Planetary Change. According to data from OpenAlex, N. J. Ledgard has authored 26 papers receiving a total of 564 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Nature and Landscape Conservation, 7 papers in Ecology and 7 papers in Global and Planetary Change. Recurrent topics in N. J. Ledgard's work include Ecology and Vegetation Dynamics Studies (9 papers), Forest ecology and management (8 papers) and Rangeland and Wildlife Management (6 papers). N. J. Ledgard is often cited by papers focused on Ecology and Vegetation Dynamics Studies (9 papers), Forest ecology and management (8 papers) and Rangeland and Wildlife Management (6 papers). N. J. Ledgard collaborates with scholars based in New Zealand, Australia and Chile. N. J. Ledgard's co-authors include E.R. Langer, Eckehard G. Brockerhoff, Yvonne M. Buckley, Mark Rees, Sergio M. Zalba, Aníbal Pauchard, Ramiro O. Bustamante, Rafael Dudeque Zenni, Eduardo de la Peña and David M. Richardson and has published in prestigious journals such as Journal of Applied Ecology, Austral Ecology and New Zealand Journal of Marine and Freshwater Research.

In The Last Decade

N. J. Ledgard

24 papers receiving 522 citations

Peers

N. J. Ledgard

NLC

GPC

ECOLO

EEBS

Tomohiko Kamitani Japan

Catherine M. Mabry United States

Claudia M. Tyler United States

Kevin H. Platt New Zealand

Martin Böhnke Germany

Noemí Mazía Argentina

Leslie Wood United States

Pablo Becerra Chile

Anne-Marie Truscott United Kingdom

Martín Baruffol Switzerland

Tomohiko Kamitani Japan

N. J. Ledgard

343 ×0.8

NLC

149 ×0.7

GPC

174 ×0.9

ECOLO

114 ×0.8

EEBS

126 ×1.0

Citations per year, relative to N. J. Ledgard N. J. Ledgard (= 1×) peers Tomohiko Kamitani

Countries citing papers authored by N. J. Ledgard

Since Specialization

Citations

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

Fields of papers citing papers by N. J. Ledgard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of N. J. Ledgard

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

All Works

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20 of 20 papers shown

Spurr, E. B. & N. J. Ledgard. (2016). Population trends of braided river birds on the Ashley River (Rakahuri), Canterbury, New Zealand, 1963–2015. Notornis. 63(2). 73–73. 4 indexed citations

Smaill, Simeon J., N. J. Ledgard, E.R. Langer, & David Henley. (2011). Establishing native plants in a weedy riparian environment. New Zealand Journal of Marine and Freshwater Research. 45(3). 357–367. 9 indexed citations

Pawson, Stephen M., James K. McCarthy, N. J. Ledgard, & Raphaël K. Didham. (2010). Density‐dependent impacts of exotic conifer invasion on grassland invertebrate assemblages. Journal of Applied Ecology. 47(5). 1053–1062. 32 indexed citations

Simberloff, Daniel, Martín A. Núñez, N. J. Ledgard, et al.. (2009). Spread and impact of introduced conifers in South America: Lessons from other southern hemisphere regions. Austral Ecology. 35(5). 489–504. 243 indexed citations

Ledgard, N. J., et al.. (2008). Establishing native species from seed within exotic grasslands.. 53(1). 23–32. 7 indexed citations

Ledgard, N. J. & Thomas Paul. (2008). Vegetation successions over 30 years of high country grassland invasion by Pinus contorta. Proceedings of the New Zealand Weed Control Conference. 61. 98–104. 18 indexed citations

Ledgard, N. J.. (2006). The effect of competition and use of fertiliser on the seedling emergence of introduced gorse (Ulex europaea) and Scotch broom (Cytisus scoparius). Proceedings of the New Zealand Weed Control Conference. 59. 8–11. 2 indexed citations

Buckley, Yvonne M., et al.. (2005). Slowing down a pine invasion despite uncertainty in demography and dispersal. Journal of Applied Ecology. 42(6). 1020–1030. 131 indexed citations

Kimberley, Mark O. & N. J. Ledgard. (1998). SITE INDEX CURVES FOR PINUS NIGRA GROWN IN THE SOUTH ISLAND HIGH COUNTRY, NEW ZEALAND. New Zealand journal of forestry science. 28(3). 389–399. 3 indexed citations

10.

Ledgard, N. J., et al.. (1998). Deciduous hardwood species - early silvicultural options for growing timber on farms.. 42(4). 16–21. 2 indexed citations

11.

Fairweather, John R., et al.. (1994). Preferences for land use options in the Mackenzie/Waitaki Basin : A Q-method analysis of stakeholders’ preferences for visual images of six land uses on four land forms. 1 indexed citations

12.

Ledgard, N. J., et al.. (1991). A study of the spread of exotic trees in Canterbury high country.. 41–50. 5 indexed citations

13.

Ledgard, N. J., et al.. (1990). Palatability of wilding conifers and control by simulated sheep browsing.. 139–143. 5 indexed citations

14.

Ledgard, N. J., et al.. (1988). Control of wilding confiers by applying herbicides to cut stumps. Proceedings of the New Zealand Weed Control Conference. 41. 160–163. 1 indexed citations

15.

Ledgard, N. J. & C. E. Ecroyd. (1988). Introduced forest trees in New Zealand: recognition, role, and seed source. 4. Pinus mugo Turra - dwarf mountan pine; Pinus uncinata Mirbel - mountain pine.. 2 indexed citations

16.

Ledgard, N. J., et al.. (1985). Diversification and opportunities in forestry in the South Island high country.. 30(1). 133–143. 1 indexed citations

17.

Ledgard, N. J., et al.. (1985). Exotic trees in the Canterbury high country.. New Zealand journal of forestry science. 15(3). 298–323. 18 indexed citations

18.

Ledgard, N. J., et al.. (1983). Provenance variation in the New Zealand species of Nothofagus.. New Zealand Journal of Ecology. 6. 19–31. 25 indexed citations

19.

Ledgard, N. J., et al.. (1983). Seed of New Zealand Nothofagus species: studies of seed weight, viability, shape and the effect of varying stratification periods.. 28(2). 150–162. 22 indexed citations

20.

Ledgard, N. J.. (1976). Research into the direct seeding of woody plants in high country revegetation. 10 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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