التفاصيل البيبلوغرافية
| العنوان: |
The role of mānuka (Leptospermum scoparium) riparian plantings in the mitigation of diffuse agricultural nitrogen |
| المؤلفون: |
Adamson, Olivia María |
| المساهمون: |
O'Neill, Tanya Ann, Guttierrez-Gines, María-Jesús, Taylor, Matthew D. |
| بيانات النشر: |
The University of Waikato |
| سنة النشر: |
2022 |
| المجموعة: |
The University of Waikato: Research Commons |
| مصطلحات موضوعية: |
Manuka, Leptospermum scoparium, Riparian, Riparian planting, Nitrogen, Leptospermum scoparium -- Environmental aspects -- New Zealand -- Waikare, Lake, Leptospermum scoparium -- Climatic factors -- New Zealand -- Waikare, Riparian plants -- Environmental aspects -- New Zealand -- Waikare, Nitrogen in agriculture -- Environmental aspects -- New Zealand -- Waikare, Soils -- Nitrogen content -- Environmental aspects -- New Zealand -- Waikare, Leptospermum scoparium -- Ecology -- New Zealand -- Waikare |
| الوصف: |
The disruption of nutrient cycles in agricultural settings, particularly pastoral farming, is responsible for up to 70% of the nitrogen (N) loads entering streams in New Zealand (NZ) — resulting in the widespread degradation of freshwater ecosystems. Riparian plantings are one strategy to mitigate the losses of N from land to water, removing N by denitrification and plant uptake. Some types of vegetation are more effective than others at intercepting N, due to their ecology, impact on soil quality and root exudates. Mānuka (Leptospermum scoparium) is a plant native to NZ, and the species could be a good candidate to mitigate N losses due its ability to tolerate high N loads and co-benefits such as farm diversification through apiculture or essential oil production. Previous work also suggests that L. scoparium could be a biological nitrification inhibitor (BNI), limiting nitrate (NO₃⁻) production in soil. The aim of this study was to investigate the potential of mānuka to intercept and remove N in an experimental riparian buffer in Lake Waikare. Currently, the lake is eutrophic due to high nutrient and sediment inputs. Significant restoration efforts have been made in recent years, led by many hapuu around the lake. All are very passionate and determined to recover the mauri of this ecosystem and reconnect the people to the lake, as well as provide economic opportunities. The riparian band had been established for four years and was set up as a series of experimental plots with different vegetation types, including plots solely in mānuka, and grassed controls. The plots are on a Perch- Gley Ultic Soil underlain by a slowly permeable clay layer— the Hamilton Ash. Further, the study sought to explore the relationship between soil physical properties and N cycling, and to identify influences expected by the local hydrology— as there was evidence of perching and lateral flow in the site. A series of suction-cup lysimeters were installed and pore water was sampled seven times between May and July 2021. Samples were ... |
| نوع الوثيقة: |
thesis |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
https://hdl.handle.net/10289/14830 |
| الاتاحة: |
https://hdl.handle.net/10289/14830 |
| Rights: |
All items in Research Commons are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated. |
| رقم الانضمام: |
edsbas.B55E02F5 |
| قاعدة البيانات: |
BASE |