P. Champion

Publications56
h-index16
Citations1,039
Highly Influential Citations75
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An illustrated guide to common weeds of New Zealand.
Review(s) of: An Illustrated Guide to Common Weeds of New Zealand, Third Edition, by Ian Popay, Paul Champion and Trevor James, Published by the New Zealand Plant Protection Society in 2010, ISBN… Expand
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Seasonality of macrophytes and interaction with flow in a New Zealand lowland stream
Introduced submerged macrophytes have come to dominate many shallow water bodies in New Zealand, and are a common component of many lowland streams. We investigated the seasonal variation of… Expand
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Seedling emergence from seed banks of 15 New Zealand lakes with contrasting vegetation histories.
Abstract Submerged sediments were sampled from 15 New Zealand lakes of contrasting vegetation histories and seedling emergence was measured. Lakes either supported seed producing, indigenous plants… Expand
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Nipping aquatic plant invasions in the bud: weed risk assessment and the trade
The importation and sale of ornamental pond and aquarium plants is the most important pathway for the introduction of potential aquatic weeds into and subsequent spread of these within a country.… Expand
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Herbicide Trials for the Control of Parrotsfeather
Parrotsfeather ( Myriophyllum aquaticum (Vell. Conc.) Verdc.) is an introduced aquatic weed that forms nuisance growths in drainage systems, wetlands and shallow lakes and is a species with limited… Expand
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Weed Risk Assessment for Aquatic Plants: Modification of a New Zealand System for the United States
We tested the accuracy of an invasive aquatic plant risk assessment system in the United States that we modified from a system originally developed by New Zealand’s Biosecurity Program. The US system… Expand
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Border control for potential aquatic weeds. Stage 1. Weed risk model.
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Spread and status of seven submerged pest plants in New Zealand lakes
Abstract The distribution of seven submerged aquatic pest plants is reported. Lake vegetation surveys recorded pest plants in 27.9% of 344 lakes, with two species co‐occurring in 5.8%, and three… Expand
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BIOMANIPULATION OF PLANTS AND FISH TO RESTORE LAKE PARKINSON: A CASE STUDY AND ITS IMPLICATIONS
The biomanipulation of aquatic plants and fish was successfully used to restore recreational uses of Lake Parkinson, a small (1.9 ha) dune lake, southwest of Auckland, after it had been degraded by… Expand
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Ecoregional differences in macrophyte and macroinvertebrate communities between Westland and Waikato: Are all New Zealand lowland streams the same?
Abstract We characterised water chemistry, aquatic habitat, macrophytes, and invertebrate assemblages in eight lowland streams—five in Westland, South Island, and three in the Waikato, North Island,… Expand
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