| Conservation status of New Zealand indigenous vascular plants, 2012 PJ De Lange, JR Rolfe, PD Champion, S Courtney, PB Heenan, ... Publishing Team, Department of Conversation, 2013 | 366 | 2013 |
| Seasonality of macrophytes and interaction with flow in a New Zealand lowland stream PD Champion, CC Tanner Hydrobiologia 441, 1-12, 2000 | 214 | 2000 |
| The influence of aquatic macrophytes on the hydraulic and physico-chemical properties of a New Zealand lowland stream RJ Wilcock, PD Champion, JW Nagels, GF Croker Hydrobiologia 416, 203-214, 1999 | 169 | 1999 |
| Seedling emergence from seed banks of 15 New Zealand lakes with contrasting vegetation histories MD de Winton, JS Clayton, PD Champion Aquatic Botany 66 (3), 181-194, 2000 | 99 | 2000 |
| Handbook for monitoring wetland condition BR Clarkson, BK Sorrell, PN Reeves, PD Champion, TR Partridge, ... Coordinated monitoring of New Zealand wetlands. A Ministry for the …, 2003 | 98 | 2003 |
| Border control for potential aquatic weeds PD Champion, JS Clayton Science for conservation 185, 2001 | 78 | 2001 |
| Weed risk assessment for aquatic plants: modification of a New Zealand system for the United States DR Gordon, CA Gantz, CL Jerde, WL Chadderton, RP Keller, ... PLoS one 7 (7), e40031, 2012 | 75 | 2012 |
| Patch-and reach-scale dynamics of a macrophyte-invertebrate system in a New Zealand lowland stream KJ Collier, PD Champion, GF Croker Hydrobiologia 392, 89-97, 1999 | 65 | 1999 |
| An illustrated guide to common weeds of New Zealand. B Roy, I Popay, P Champion, T James, A Rahman | 63 | 1998 |
| An illustrated guide to common weeds of New Zealand. B Roy, I Popay, P Champion, T James, A Rahman | 56 | 2004 |
| Nipping aquatic plant invasions in the bud: weed risk assessment and the trade PD Champion, JS Clayton, DE Hofstra Hydrobiologia 656, 167-172, 2010 | 53 | 2010 |
| An illustrated guide to common weeds of New Zealand I Popay, P Champion, T James Plant Protection Quarterly 25 (1), 39, 2010 | 51 | 2010 |
| Spread and status of seven submerged pest plants in New Zealand lakes MD deWinton, PD Champion, JS Clayton, RDS Wells New Zealand Journal of Marine and Freshwater Research 43 (2), 547-561, 2009 | 51 | 2009 |
| Checklist of dicotyledons, gymnosperms, and pteridophytes naturalised or casual in New Zealand: additional records 1999–2000 PB Heenan, PJ De Lange, EK Cameron, PD Champion New Zealand Journal of Botany 40 (2), 155-174, 2002 | 47 | 2002 |
| Schoenoplectus californicus (Cyperaceae) in New Zealand PJ de Lange, RO Gardner, PD Champion, CC Tanner New Zealand Journal of Botany 36 (3), 319-327, 1998 | 47 | 1998 |
| Effects of livestock grazing on wetlands: literature review PN Reeves, PD Champion Environment Waikato Regional Council, 2004 | 45 | 2004 |
| A weed risk assessment model for aquatic weeds in New Zealand PD Champion, JS Clayton Weed risk assessment, 194-202, 2001 | 43 | 2001 |
| Biomanipulation of plants and fish to restore Lake Parkinson: a case study and its implications DK Rowe, PD Champion Restoration of aquatic habitats. Selected papers from the second day of the …, 1994 | 40 | 1994 |
| Border control for potential aquatic weeds: Stage 2. Weed risk assessment PD Champion, JS Clayton Science for conservation, 30, 2001 | 35 | 2001 |
| Risk assessment method for submerged weeds in New Zealand hydroelectric lakes J Clayton, P Champion Macrophytes in Aquatic Ecosystems: From Biology to Management: Proceedings …, 2006 | 34 | 2006 |
