Ecology: related PDFs

Nutrient concentration criteria for periphyton biomass objectives

February 2023
LWP collaborated with scientists at NIWA to derive nutrient criteria to achieve periphyton biomass objectives for rivers in New Zealand.

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Trend assessment guidance including worked examples

May 2021
Guidance for the analysis of temporal trends in environmental data including and R code and data for worked examples.

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State and Trends of River Water Quality in the Manawatū-Whanganui Region

January 2020
This study analysed the available river water quality data in the Manawatū-Whanganui Region. The report describes the state of water quality...

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Aggregating trend data for environmental reporting

December 2018
Methods for aggregating trend analyses performed on many sites to summarise broad-scale water quality changes.

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Predictive modelling of current and natural loads of nutrient and estimation of anthropogenic increases

October 2017
Predictive modelling of current and natural loads of nutrient and estimation of anthropogenic increases

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Review of Waipaoa Catchment Plan Limits

May 2017
Review of Waipaoa Catchment Plan Limits

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Review of the Ruataniwha Water Storage Scheme Issue 12

April 2017
Review of the Ruataniwha Water Storage Scheme Issue 12

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Definition of reference conditions for macroinvertebrate community index

March 2017
Definition of reference conditions for macroinvertebrate community index

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Current state and trends in water quality in New Zealand rivers paper

June 2016
Current state and trends in water quality in New Zealand rivers paper

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Current state and trends in water quality in New Zealand rivers

February 2016
National analysis of water quality state and trend in New Zealand rivers and lakes

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