Description
Enregistrements de données
Les données de cette ressource occurrence ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 11 136 enregistrements.
1 tableurs de données dextension existent également. Un enregistrement dextension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre denregistrements dans chaque tableur de données dextension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Myer B, Jadin I, Cochrane P (2025). Nelson City Council Waterworks Reserves Browse Monitoring Data, 2013-2023. Version 1.1. Kaitiaki o te Ngahere. Occurrence dataset. https://ipt.gbif.org.nz/resource?r=nelson_water_catchments_browse_monitoring_data&v=1.1
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Kaitiaki o te Ngahere. En vertu de la loi, léditeur a abandonné ses droits par rapport à ces données et les a dédié au Domaine Public (CC0 1.0). Les utilisateurs peuvent copier, modifier, distribuer et utiliser ces travaux, incluant des utilisations commerciales, sans aucune restriction.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : 4836d32f-8d9a-4a6b-ad54-2b16bf2d7e77. Kaitiaki o te Ngahere publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du GBIF New Zealand.
Mots-clé
Occurrence; Observation; Plant; Browse Index; Water catchments; Nelson; Observation
Contacts
- Créateur ●
- Personne De Contact
- Nelson Branch Manager
- 33 Vanguard Street
- 0220648599
- Fournisseur Des Métadonnées ●
- Personne De Contact
- GIS administrator
- 33 Vanguard Street
- Créateur ●
- Personne De Contact
- Environmental Programmes Adviser
- Fournisseur Des Métadonnées ●
- Personne De Contact
- GIS Administrator
- 33 Vanguard Street
Couverture géographique
Nelson City Council Waterworks Reserves
| Enveloppe géographique | Sud Ouest [-41,373, 173,258], Nord Est [-41,284, 173,413] |
|---|
Couverture taxonomique
Pas de description disponible
| Kingdom | Plantae |
|---|---|
| Phylum | Tracheophyta |
| Class | Pinopsida, Magnoliopsida, Polypodiopsida, Lycopodiopsida |
| Order | Canellales, Dipsacales, Cucurbitales, Asterales, Ericales, Fagales, Laurales, Ranunculales, Poales, Malpighiales, Myrtales, Asparagales, Polypodiales, Hymenophyllales, Malvales, Boraginales, Lamiales, Caryophyllales, Liliales, Lycopodiales, Osmundales, Rosales, Fabales, Saxifragales, Brassicales, Sapindales, Gentianales, Pinales, Psilotales, Oxalidales, Cyatheales, Apiales |
| Family | Coriariaceae, Monimiaceae, Araliaceae, Pittosporaceae, Myrtaceae, Thymelaeaceae, Winteraceae, Blechnaceae, Plantaginaceae, Sapindaceae, Rosaceae, Ranunculaceae, Cyperaceae, Dennstaedtiaceae, Polypodiaceae, Cunoniaceae, Elaeocarpaceae, Asparagaceae, Pinaceae, Cruciferae, Pteridaceae, Polygonaceae, Ericaceae, Compositae, Rubiaceae, Dryopteridaceae, Rousseaceae, Juncaceae, Fabaceae, Violaceae, Urticaceae, Psilotaceae, Thelypteridaceae, Nothofagaceae, Boraginaceae, Caprifoliaceae, Podocarpaceae, Griseliniaceae, Asphodelaceae, Haloragaceae, Dicksoniaceae, Asteliaceae, Lycopodiaceae, Osmundaceae, Hymenophyllaceae, Primulaceae, Aspleniaceae, Apocynaceae, Gramineae, Cyatheaceae, Pennantiaceae, Ripogonaceae, Asteraceae |
Couverture temporelle
| Date de début / Date de fin | 2013-05-23 / 2013-07-31 |
|---|
| Date de début / Date de fin | 2015-07-08 / 2015-08-06 |
|---|
| Date de début / Date de fin | 2018-06-27 / 2018-08-22 |
|---|
| Date de début / Date de fin | 2023-07-17 / 2023-08-04 |
|---|
Données sur le projet
The Nelson City Council commissioned Kaitiaki o te Ngahere to conduct browse monitoring surveys in the Maitai and Roding Waterworks Reserves, which together provide Nelson City’s domestic water supply. The project was initially established to provide short- to medium-term vegetation outcome monitoring for the Council’s goat control programme. More broadly, it serves to evaluate the impacts of introduced ungulates on indigenous forest understories and biodiversity. Understanding these impacts is critical because ungulates cause significant damage to native flora and forest ecosystems, particularly in New Zealand, where vegetation evolved without mammalian herbivores and remains highly vulnerable to browsing (Sweetapple & Nugent, 2004). The surveys, undertaken in 2013, 2015, 2018, and 2023, followed a methodology based on the Department of Conservation Goat/Pig Monitoring Strategy Sounds Area 2002 (olddm-880882) suggested by Tom Stein in 2002. This strategy uses the Seedling Ratio Index (SRI) developed by Sweetapple & Nugent (2004), along with additional indices, to provide a comprehensive assessment of ungulate impacts and abundance. Data collected include plant occurrence, browsing intensity, ungulate sign, and regeneration patterns, providing long-term ecological information to guide management interventions. Results from these surveys demonstrate that ungulates continue to have significant negative impacts on biodiversity. Recruitment of key palatable species is very low, and forest resilience to ongoing browsing and disturbance remains limited. This monitoring supports both biodiversity conservation and the protection of water quality within the catchments.
| Titre | Nelson City Council Waterworks Reserves Browse Monitoring Surveys |
|---|---|
| Financement | The project is funded by Nelson City Council (NCC), which commissioned Kaitiaki o te Ngahere Ltd to carry out browse monitoring surveys in the Waterworks Reserves in 2013, 2015, 2018, and 2023. |
| Description du domaine détude / de recherche | The study area is the Nelson City Council goat control area within the Maitai and Roding waterworks catchments, located south and east of Nelson City. Together, these catchments cover approximately 14,500 hectares (excluding roads, lakes, riverbeds, and pine plantations). The ongoing 22 transects are located within the 4,675-hectare goat control area, which lies within the larger waterworks catchment boundary. |
| Description du design | In May 2013, the Nelson City Council (NCC) commissioned Kaitiaki o te Ngahere to establish and survey 15 transects that were randomly located and permanently marked in the Maitai and Roding catchments. Each transect consisted of 20 plots spaced 20 metres apart along a true north bearing, giving a total length of 400 metres per transect. The first survey was carried out between 23 May and 31 July 2013. The same transects were revisited between 8 July and 6 August 2015. A review of the survey design in 2018 resulted in the removal of 5 of the original 15 transects and the addition of 12 new ones, resulting in a revised network of 22 “ongoing” transects. While some of the 2013–2015 transects were incorporated into this new network, the 2018 survey measured 12 different transects between 27 June and 22 August 2018. The full revised network of 22 transects was subsequently surveyed between 17 July and 4 August 2023. Within each plot, observers recorded all plants taller than 0.3 m but shorter than 2 m within a 1.4 m radius (“Browse Tier”). Only species capable of attaining a free-standing height of at least 30 cm in the absence of ungulates were included. Seedlings shorter than 0.3 m were recorded within a 0.49 m radius (“Ground Tier”), with cotyledon-only seedlings excluded. Species were also categorised into habit classes such as climbers, herbs and woody species. Following a review of the methodology by Sweetapple in 2022, a few changes were applied in the 2023 survey compared with previous surveys to increase the efficiency and robustness of data collection and analysis. In addition to the increased number of transects, the Browse Tier was redefined as plants 15–200 cm above the ground, and only the presence/absence of each species per plot was recorded rather than counts. All annual-herbs, ground-ferns, tall-monocotyledons, short-woody and climbing species were also excluded. Ripogonum scandens (supplejack) was included as an exception due to its self-supporting growth habit. For Browse Tier species, a Browse Index (BI) was visually assessed to quantify ungulate browsing intensity on individual plants, providing an index of ungulate abundance. A BI value was assigned to each plant species with foliage using a 5-point scale: - 0: No ungulate browse - 1: 0–25% of stems or shoots browsed - 2: 26–50% of stems or shoots browsed - 3: 51–75% of stems or shoots browsed - 4: 76–100% of stems or shoots browsed Observers also recorded: - physiography characteristics (drainage, aspect, slope, and altitude), - location of transect origin and plot centre, - vegetation type, - the percentage of the 1.4 m plot with recent pig digging, - the percentage of the plot potentially available for pig digging, - animal sightings and signs, - site-specific comments, - from 2018 onwards, the presence/absence of faecal pellets within the 0.49 m plot (noting species, quantity, and condition), and - the presence of weed species (species name, age class, and estimated distribution). Additionally, from 2018, plant species were assigned to palatability classes (high, moderate, low) based on existing literature. All collected data were checked, sorted, and cleaned for provision to NCC and for future analysis. This included calculating the Faecal Pellet Index (FPI) and the Seedling Ratio Index (SRI). FPI measures the ratio of faecal pellet presence to absence by species per transect. SRI is the ratio of species richness of tall seedlings (Browse Tier, 30–200 cm) to that of short seedlings (Ground Tier, <30 cm), calculated across species or palatability preference classes. Developed by Sweetapple and Nugent (2004), this index is used to assess and monitor the impact of introduced ungulates on indigenous forest understories. The method assumes that short seedling richness is largely unaffected by browsing, whereas palatable tall seedling richness is reduced due to selective browsing and growth suppression. Higher SRI values indicate stronger ungulate impacts. Sweetapple and Nugent demonstrated a strong negative correlation between SRI of high-preference plants and ungulate abundance, confirming this method as a reliable indicator of browsing pressure and, by extension, the effectiveness of animal control efforts. |
Les personnes impliquées dans le projet:
- Auteur
- Vérificateur
- Vérificateur
Citations bibliographiques
- Sweetapple, P. J., & Nugent, G. (2004). Seedling ratios: A simple method for assessing ungulate impacts on forest understories. Wildlife Society Bulletin, 32(1), 137–147. https://doi.org/10.2193/0091-7648(2004)32[137:SRASMF]2.0.CO;2
- Sweetapple, P. (2022). Evaluation of seedling ratio monitoring in the Nelson City Council Waterworks Reserve: Evaluation of seedling ratio data from an ungulate control area, Nelson (Contract Report No. LC4162). Manaaki Whenua – Landcare Research. https://envirolink.govt.nz/
Métadonnées additionnelles
| Remerciements | |
|---|---|
| Introduction | |
| Objet | |
| Description de la fréquence de mise à jour | This dataset will be updated to include the results of any future Browse Monitoring Surveys undertaken in the Waterworks Reserves by Kaitiaki o te Ngahere. |
| Identifiants alternatifs | 4836d32f-8d9a-4a6b-ad54-2b16bf2d7e77 |
| https://ipt.gbif.org.nz/resource?r=nelson_water_catchments_browse_monitoring_data |