Global FinPrint project- Sampling shark populations using Baited Remote Underwater Videos (BRUVs)

Dernière version Publié par Test Organization #1 le Mar 17, 2020 Test Organization #1

This media contains approximately 216 hour’s long video footage of sharks surveys collected using BRUVS. The surveys conducted in Kenya and Tanzania in 2017 by CORDIO East Africa as part of the global FINPRINT project that seeks to provide the first global estimate of the populations of reef-associated shark and ray species. BRUVS equipment were deployed consecutively at three different locations along the coast of Kenya and Tanzania. Each BRUVS deployment was left to record underwater videos for one hour. A total of 105 drops were achieved in Tanzania and 120 for Kenya. In Tanzania, the surveys were conducted in Tanga Coelacanth Marine Park in Tanga district which borders to the south between 15th and 20th March 2017. A similar exercise was also conducted in Kenya 9 month after in Kisite Marine and Watamu Marine Park and reserve respectively where a total of 111 drops at depths between 5.0m and 40.0m recording a total of 111 hrs video footage was recorded.

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Osuka K, Obota C (2020): Global FinPrint project- Sampling shark populations using Baited Remote Underwater Videos (BRUVs). v1.4. Test Organization #1. Dataset/Metadata. https://ipt.gbif.org/resource?r=bruvs_surveys&v=1.4

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L’éditeur et détenteur des droits de cette ressource est Test Organization #1. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

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Mots-clé

sharks; BRUVS; coral reef; rays; BRUVS

Contacts

Personne ayant créé cette ressource:

Kennedy Osuka
Research Scientist
CORDIO EAST AFRICA 10135 80101 Mombasa Bamburi KE +254 791 717 714
http://cordioea.net/
Clay Obota
Research Scientist
CORDIO East Africa 10135 80101 Mombasa Bamburi KE +254791717714
http://http//cordioea.net

Personne pouvant répondre aux questions sur la ressource:

Melita Samoilys
Director
CORDIO EAST AFRICA 10135 80101 Mombasa Bamburi KE +254 791 717 714
http://cordioea.net/

Personne ayant renseigné les métadonnées:

James Mbugua
GIS Expert & IT Manager
CORDIO EAST AFRICA 10135 80101 Mombasa Bamburi KE +254 791 717 714
http://cordioea.net/

Autres personnes associées à la ressource:

Chercheur Principal
Melita Samoilys
Director
CORDIO EAST AFRICA 10135 80101 Mombasa Bamburi KE +254 791 717 714
http://cordioea.net/
Personne de Contact
Kennedy Osuka
Research Scientist
CORDIO EAST AFRICA 10135 80101 Mombasa Bamburi KE +254791717714
http://cordioea.net/

Couverture géographique

BRUVS surveys were conducted in Tanga Tanzania near the Keya/Tanzania border and also in Kilifi north of Mombasa.

Enveloppe géographique Sud Ouest [-6, 38], Nord Est [-3, 41]

Couverture taxonomique

The survey targets coral reef sharks and rays but other important information like benthic cover composition at each drop may also be derived from the video footage.

Informal  Elasmobranchii (sharks)

Couverture temporelle

Date de début / Date de fin 2017-03-15 / 2017-03-20
Date de début / Date de fin 2017-11-21 / 2017-12-13

Données sur le projet

Pas de description disponible

Titre Global FinPrint project
Financement These surveys were funded by the Australian Institute of Marine Sciences (AIMS) under the Global FinPrint project; a worldwide effort to assess coral reef sharks and rays, understand how they affect these vanishing ecosystems, and inform emerging conservation actions.
Description du domaine d'étude / de recherche Surveys in Tanzania were conducted at different locations along the coast of Tanga in Northern Tanzania between 15th and 20th March 2017 including sites within the Coelacanth Marine Park while in Kenya two marine park sites were selected for sampling: Kisite Marine Park and Watamu Marine Park (both no-take zones)
Description du design The survey involved deployment of BRUVs system with bait attached so as to entice fish and capture them on video for analysis. This method is non-extractive and provides an efficient and repeatable method to record fish species abundance across a range of depths, conditions and habitat types.

Les personnes impliquées dans le projet:

Fournisseur des Métadonnées
James Mbugua

Méthodes d'échantillonnage

Baited Remote Underwater Video Stations were used for fish surveys. The BRUVS use method is a standardised method with the advantages of sampling at greater depth and over greater time periods than diver surveys; efficient survey of low-density populations, particularly predator and scavenger species; sampling species that are diver-shy; and precise and accurate measurement of fish sizes. The BRUVS systems use high definition digital video cameras recording to hard drive.

Etendue de l'étude A survey conducted in Tanga in Tanga Coelacanth Marine Park. In Kenya, surveys were conducted at two sites i.e. Kwale county at Kisite Mpunguti MPA and MNR and in Kilifi county at Kilifi MPA
Contrôle qualité This data is considered raw and original unless otherwise stated. Processing of the survey footages recorded by CORDIO is currently ongoing by AIMS/FINPRINT. Users are also advised to consult widely before attempting to use the data.

Description des étapes de la méthode:

  1. This field allows for repeated sets of elements that document a series of methods and procedures used in the study, and the processing steps leading to the production of the data files. These include text descriptions of the procedures, relevant literature, software, instrumentation, source data and any quality control measures taken. Each method should be described in enough detail to allow other researchers to interpret and repeat, if required, the study.

Métadonnées additionnelles

From late 2017 and in to 2018, the processing of the survey footages recorded by CORDIO is still ongoing by AIMS/FINPRINT. Prior to this study, BRUVs had not been used to study fish populations in the East African region. In 2018, CORDIO is looking forward to training opportunities to enhance its technical capacity to analyze and process the videos within the region and strengthen potential linkages between the participating institutions and institutions such as South African Institute of Aquatic Biodiversity (SAIAB).

Objet The survey seeks to assess coral reef sharks and rays, understand how they affect these vanishing ecosystems, and inform emerging conservation actions.
Description de la fréquence de mise à jour Data is updated as deemed necessary
Identifiants alternatifs https://ipt.gbif.org/resource?r=bruvs_surveys