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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Nutrient criteria to achieve New Zealand's riverine macroinvertebrate targets
PeerJ (San Francisco, CA), Vol.9, e11556
31/05/2021
PMID: 34131528
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Abstract
Waterways worldwide are experiencing nutrient enrichment from population growth and intensive agriculture, and New Zealand is part of this global trend. Increasing fertilizer in New Zealand and intensive agriculture have driven substantial water quality declines over recent decades. A recent national directive has set environmental managers a range of riverine ecological targets, including three macroinvertebrate indicators, and requires nutrient criteria be set to support their achievement. To support these national aspirations, we use the minimization-of-mismatch analysis to derive potential nutrient criteria. Given that nutrient and macroinvertebrate monitoring often does not occur at the same sites, we compared nutrient criteria derived at sites where macroinvertebrates and nutrients are monitored concurrently with nutrient criteria derived at all macroinvertebrate monitoring sites and using modelled nutrients. To support all three macroinvertebrate targets, we suggest that suitable nutrient criteria would set median dissolved inorganic nitrogen concentrations at similar to 0.6 mg/L and median dissolved reactive phosphorus concentrations at similar to 0.02 mg/L. We recognize that deriving site-specific nutrient criteria requires the balancing of multiple values and consideration of multiple targets, and anticipate that criteria derived here will help and support these environmental goals.
Details
- Title
- Nutrient criteria to achieve New Zealand's riverine macroinvertebrate targets
- Creators
- Adam D. Canning - James Cook UniversityMichael K. Joy - Victoria University of WellingtonRussell G. Death - Massey University
- Publication Details
- PeerJ (San Francisco, CA), Vol.9, e11556
- Publisher
- Peerj Inc
- Number of pages
- 20
- Identifiers
- 991013092676602368
- Copyright
- © 2021 Canning et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, (https://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article