Description
This dataset presents the distribution and diversity of epilithic diatoms collected in two field campaings at Deserta Grande Island (Madeira archipelago, Portugal).
Enregistrements de données
Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 149 enregistrements.
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 n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Gonçalves V, Ritter C, Marques H, Teixeira D, Raposeiro P M (2020): Diatoms from Deserta Grande (Madeira Archipelago, Portugal). v1.5. Universidade dos Açores. Dataset/Occurrence. http://ipt.gbif.pt/ipt/resource?r=diatdes&v=1.5
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Universidade dos Açores. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 03dfa40e-3887-4648-8fc2-e72e0bd09fbd. Universidade dos Açores publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Portugal.
Mots-clé
Bacillariophyta; oceanic islands; freshwater systems; terrestrial systems; Madeira archipelago; Desertas subarchipelago; Occurrence
Contacts
- Créateur
- Professor
- Campus de Ponta Delgada Rua da Mãe de Deus, s/n Complexo Científico
http://orcid.org/http://orcid.org/0000-0002-7461-0851
- Fournisseur Des Métadonnées ●
- Auteur ●
- Créateur
- Researcher
- Campus de Ponta Delgada Rua da Mãe de Deus, s/n Complexo Científico
- Fournisseur Des Métadonnées ●
- Auteur ●
- Créateur
- Researcher
- Rua da Mãe de Deus, s/n Complexo Científico
- Fournisseur Des Métadonnées ●
- Auteur ●
- Créateur
- Researcher
- Eng. Rui Vieira, Caminho do Meio, Bom Sucesso
- Fournisseur Des Métadonnées ●
- Auteur ●
- Créateur ●
- Personne De Contact
- Researcher
- Campus de Ponta Delgada Rua da Mãe de Deus, s/n Complexo Científico
- Fournisseur Des Métadonnées ●
- Auteur ●
- Personne De Contact
- Professor
- Campus de Ponta Delgada Rua da Mãe de Deus, s/n Complexo Científico
Couverture géographique
The Desertas sub-archipelago is located 20 km southeast of Madeira Island. Deserta Grande is the largest of the three islets, with an area of approximately 10 km2 and a maximum altitude of 479 m.
| Enveloppe géographique | Sud Ouest [32,396, -16,563], Nord Est [32,604, -16,449] |
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Couverture taxonomique
Epilithic diatoms from Deserta Island (Deserta sub archipelago, Madeira Archipelago, Portugal).
| Phylum | Bacillariophyta (Diatom) |
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Couverture temporelle
| Date de début | 2013-09-18 |
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| Date de début | 2014-04-14 |
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Données sur le projet
Pas de description disponible
| Titre | Diatom from Deserta Grande (Madeira Archipelago, Portugal) |
|---|---|
| Financement | This work was funded by national funds through FCT – Foundation for Science and Technology under the PTDC/CTA-AMB/28511/2017 and DL57/2016/ICETA/EEC2018/25. |
| Description du domaine d'étude / de recherche | Desertas subarchipelago is formed by three uninhabited small islets belonging to the Madeira Archipelago located 20 km southeast of Madeira Island. Deserta Grande is the largest of the three islets, with an area of approximately 10 km2 and a maximum altitude of 479 m. The Deserta Grande geomorphology is mostly rugged, with very steep slopes, ridges and peaks. The climate is temperate oceanic and the predominant habitats are rocky slopes and small arid flatlands, with sparse vegetation. Although fauna and flora of Desertas Islands are regarded as interesting and with high conservation value, freshwater biota was never study. Freshwater habitats are reduced to temporary streams in Vale da Castanheira. |
| Description du design | Several freshwater habitats were sampled during two field campaigns in Deserta Grande, in 2013 and 2014. Diatom samples were collected by filtering water or by brushing the bottom and walls of the pools or stream bed. Samples were treated with warm nitric acid and mounted with Naphrax©. Diatoms slides were examined under 1000x magnification using a light microscope ZEISS AXIOIMAGE A1 with differential interference contrast. Species identification followed European diatom floras. At least 400 valves were counted in each sample. |
Les personnes impliquées dans le projet:
Méthodes d'échantillonnage
Diatoms were sampled with help of a toothbrush to remove the biofilm and placed into a tray with a little water. The resulting suspension was collected in a plastic bottle, fixed with Lugol iodine and stored prior to analysis.
| Etendue de l'étude | Diatoms were sampled from several freshwater habitats were sampled during two field campaigns in Deserta Grande, in 2013 and 2014. |
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| Contrôle qualité | Samples for diatom analysis were following the National and European recommendations. |
Description des étapes de la méthode:
- Diatom slides were mounted with Naphrax, and at least 400 valves per sample. were counted and identified to species or variety level under oil-immersion phase contrast light microscopy using a ZEISS AXIOIMAGE A1 microscope. General diatom floras were consulted for diatom identification.
Métadonnées additionnelles
| Identifiants alternatifs | 03dfa40e-3887-4648-8fc2-e72e0bd09fbd |
|---|---|
| http://ipt.gbif.pt/ipt/resource?r=diatdes |