Descripción
This dataset presents the distribution and diversity of epilithic diatoms collected in two field campaings at Deserta Grande Island (Madeira archipelago, Portugal).
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 149 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
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
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Universidade dos Açores. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 03dfa40e-3887-4648-8fc2-e72e0bd09fbd. Universidade dos Açores publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Portugal.
Palabras clave
Bacillariophyta; oceanic islands; freshwater systems; terrestrial systems; Madeira archipelago; Desertas subarchipelago; Occurrence
Contactos
- Originador
http://orcid.org/http://orcid.org/0000-0002-7461-0851
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Cobertura geográfica
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.
| Coordenadas límite | Latitud Mínima Longitud Mínima [32,396, -16,563], Latitud Máxima Longitud Máxima [32,604, -16,449] |
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Cobertura taxonómica
Epilithic diatoms from Deserta Island (Deserta sub archipelago, Madeira Archipelago, Portugal).
| Filo | Bacillariophyta (Diatom) |
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Cobertura temporal
| Fecha Inicial | 2013-09-18 |
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| Fecha Inicial | 2014-04-14 |
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Datos del proyecto
No hay descripción disponible
| Título | Diatom from Deserta Grande (Madeira Archipelago, Portugal) |
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| Fuentes de Financiación | 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. |
| Descripción del área de estudio | 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. |
| Descripción del diseño | 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. |
Personas asociadas al proyecto:
Métodos de muestreo
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.
| Área de Estudio | Diatoms were sampled from several freshwater habitats were sampled during two field campaigns in Deserta Grande, in 2013 and 2014. |
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| Control de Calidad | Samples for diatom analysis were following the National and European recommendations. |
Descripción de la metodología paso a paso:
- 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.
Metadatos adicionales
| Identificadores alternativos | 03dfa40e-3887-4648-8fc2-e72e0bd09fbd |
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| http://ipt.gbif.pt/ipt/resource?r=diatdes |