Description
The survey data of cephalopods was obtained in the beam trawl survey from 2007 to 2021. The survey was conducted by the R/V "Ocean Researcher III" and the R/V "New Ocean Researcher III". All the samples were collected by the beam trawl, with the width 6 m, body length 8 m, body mesh 4.5 cm, and cod end mesh 2.5 cm, and each trawling was conducted at 2 knots/hr for 30 minutes. Most of the sampling sites were located along the western coast of Taiwan, while some sites were located in the offshore zones (e.g., Penghu Channel, Changyun Rise).
Enregistrements de données
Les données de cette ressource données d'échantillonnage 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 195 enregistrements.
1 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension 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 n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Chen M (2023): Cephalopod assemblages off western Taiwan. v1.1. Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan. Dataset/Samplingevent. https://ipt.taibif.tw/resource?r=a_dataset_of_trawling_cephalopods_in_coastal_waters_off_western_taiwan&v=1.1
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan. 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 : 173c93da-9ed9-4cf3-b521-dc3e77f28890. Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Taiwan Biodiversity Information Facility.
Mots-clé
Sampling event; beam trawl; cuttlefish; squid; octopus; Sepia pharaonis; Sepia lycidas
Contacts
- Créateur ●
- Personne De Contact ●
- Chercheur Principal
https://orcid.org/0000-0002-1868-7061
- Auteur
- Auteur
- Auteur
- Fournisseur De Contenu
- Fournisseur De Contenu
- Chercheur Principal
Couverture géographique
The survey covered the coastal waters off western Taiwan with some offshore sampling sites. The coordinates were located between 119.49-120.84 E and 22.17-24.70 N, which were recorded as decimal degree.
| Enveloppe géographique | Sud Ouest [22,177, 119,498], Nord Est [24,704, 120,841] |
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Couverture taxonomique
A total of 31 taxa from 13 genera and 6 families of cephalopods were captured during the survey period.
| Family | Enoploteuthidae, Loliginidae, Octopodidae, Sepiadariidae, Sepiidae, Sepiolidae |
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Couverture temporelle
| Date de début / Date de fin | 2007-06-01 / 2021-11-30 |
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Méthodes d'échantillonnage
The beam trawl (width 6 m, body length 8 m, body mesh 4.5 cm, and cod end mesh 2.5 cm) onboard the R/V "Ocean Researcher III" and the R/V "New Ocean Researcher III" was used for the survey. Each trawling was conducted as 2 knots/hr of speed and 30 minutes, and the sweeping area was about 11,112 square meters. The coordinates recorded in the dataset for trawling were the original sites of the trawling starting.
| Etendue de l'étude | The study sites were located along the coastal waters off western Taiwan, including some offshore sites, such as Penghu Channel and Changyun Rise. There were total 13 sites from north to south: Maoli, Wuchi, Changyun Rise, Wangong, Taihsi, Cigu, Penghu Channel, Jiading, Zuoying, Lingyuan, Dapeng, Linbian, Fangliao. The coordinates of these sites covered between 119.49-120.84°E and 22.17-24.70°N. |
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| Contrôle qualité | All cephalopod samples were put in the -20°C freezer on board immediately after finishing the trawling, and soon transfered to the freezer in lab to prevent the samples spoiling. To make sure the accuracy of the identification, we complied with the guideline of the cephalopod taxonomy with these 2 publications: Lu & Chung (2017) "Guide to the Cephalopod of Taiwan" and Okutani (2015) "Cuttlefishes and Squids of the World". Afterwards, the data were validated again by matching them against Catalogue of Life in Taiwan (TAICOL), World Register of Marine Specie (WoRMS), etc. |
Description des étapes de la méthode:
- 1. Data collection: described as the column of "Sampling Description" 2.Sample identification: the professional would identify the cephalopod samples referring to 2 publications: Lu & Chung (2017) "Guide to The Cephalopod of Taiwan" and Okutani (2015) "Cuttlefishes and Squids of the World". After finishing the identification, all information would be recorded on the log book, such as species name, body length, state of specimen, etc. 3. Data processing and preserving: All the information would be keyed in and saved as excel files. After validating all data, the dataset would be uploaded on the GBIF website.
Métadonnées additionnelles
| Identifiants alternatifs | 173c93da-9ed9-4cf3-b521-dc3e77f28890 |
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| https://ipt.taibif.tw/resource?r=a_dataset_of_trawling_cephalopods_in_coastal_waters_off_western_taiwan |