Modelling: 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.

View PDF

Research article on continuous measures of confidence in trend direction

February 2023
This article proposes abandoning null hypothesis significance tests in favour of continuous measures of confidence in direction of environmental trends

View PDF

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.

Download ZIP File

Manawatū-Whanganui Region Catchment Nitrogen Models

March 2021
LWP Ltd and Streamlined Environmental Ltd collaborated to set up and calibrate catchment nitrogen models to assist with Regional Plan Change...

View PDF

Aggregating trend data for environmental reporting

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

View PDF

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

View PDF

Consideration of proposed fencing rules in New Zealand with respect to contaminant generation at the national scale

September 2017
Consideration of proposed fencing rules in New Zealand with respect to contaminant generation at the national scale

View PDF

Identifying and communicating risk and uncertainty in the Rangitaiki and Kaituna-Pongakawa-Waitahanui Water Management Area

June 2017
Identifying and communicating risk and uncertainty in the Rangitaiki and Kaituna-Pongakawa-Waitahanui Water Management Area

View PDF

Practical tools and frameworks for freshwater policy developmentˇApplication in the Bay of Plenty

June 2017
Practical tools and frameworks for freshwater policy developmentˇApplication in the Bay of Plenty

View PDF

Definition of reference conditions for macroinvertebrate community index

March 2017
Definition of reference conditions for macroinvertebrate community index

View PDF