Bottom Trawl Survey of Demersal Fishes and Essential Fish Habitats along the Western Coast of Taiwan (2020–2023)

Sampling event
Versão mais recente published by Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan on abr. 18, 2025 Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan
Publication date:
18 de abril de 2025
Licença:
CC-BY 4.0

Baixe a última versão do recurso de dados, como um Darwin Core Archive (DwC-A) ou recurso de metadados, como EML ou RTF:

Dados como um arquivo DwC-A download 119 registros em English (44 KB) - Frequência de atualização: desconhecido
Metadados como um arquivo EML download em English (52 KB)
Metadados como um arquivo RTF download em English (18 KB)

Descrição

This dataset compiles bottom trawl survey data on demersal fishes collected along the western and southwestern coasts of Taiwan from 2020 to 2023. The survey covered 41 sampling stations across 10 key locations, ranging from Miaoli in the north to Pingtung in the south. In addition to commonly surveyed nearshore shallow areas, the sampling also extended to offshore regions with depths reaching 450 meters, encompassing distinct underwater geomorphological features such as the Changyun Rise, the Kaoping Submarine Canyon, and the Penghu Channel. This dataset represents one of the few systematic investigations in Taiwan that span a wide spectrum of bathymetric and geomorphological gradients. All surveys were conducted aboard the R/V New Ocean Research III, using a standardized 6-meter-wide beam trawl towed for 30 minutes at a speed of approximately 2 knots. A total of 119 hauls were completed, yielding 10,494 individual records representing 219 demersal fish species across 80 families. For each haul, the dataset includes species identification, number of individuals, sampling date, station location, and water depth. Published in Darwin Core format in accordance with GBIF standards, this dataset provides essential baseline information for understanding demersal fish assemblages in soft-bottom ecosystems along Taiwan’s western coast. As one of the few publicly accessible bottom trawl datasets from East Asia, it supports applications in marine protected area (MPA) planning, species distribution modeling (SDM), ecosystem service valuation, and global data integration for sustainable ocean governance.

Registros de Dados

Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 119 registros.

Também existem 1 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.

Event (core)
119
Occurrence 
1315

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versões

A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.

Como citar

Pesquisadores deveriam citar esta obra da seguinte maneira:

Chen M H, Lai C C (2025). Bottom Trawl Survey of Demersal Fishes and Essential Fish Habitats along the Western Coast of Taiwan (2020–2023). Version 1.0. Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan. Samplingevent dataset. https://ipt.taibif.tw/resource?r=demersal_fishes_2020-2024&v=1.0

Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 56fc46e6-3b01-4673-be20-e5f81ba405e4.  Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Taiwan Biodiversity Information Facility.

Palavras-chave

Samplingevent; bottom trawl; Taiwan Strait; fish assemblage; open biodiversity data

Contatos

Meng Hsien Chen
  • Ponto De Contato
  • Professor
Department of Oceanography, National Sun Yat-sen University
  • 70, Leihai Rd, Gushen Dist.
804 Kaohsiung
TW
Chien Cheng Lai
  • research assistant
Department of Oceanography, National Sun Yat-sen University
  • 70, Leihai Rd, Gushen Dist.
804 Kaohsiung
TW
Meng Hsien Chen
  • Ponto De Contato
  • Professor
Department of Oceanography, National Sun Yat-sen University
  • 70, Leihai Rd, Gushen Dist.
804 Kaohsiung
TW
Meng-Hsien Chen
  • Pesquisador Principal
  • Professor
Department of Oceanography, National Sun Yat-sen University
  • 70, Leihai Rd, Gushen Dist.
Kaohsiung
TW
Chien Cheng Lai
  • Research assistant
Department of Oceanography, National Sun Yat-sen University
TW
Yu-Jia Lin
  • Assistant Professor
Institute of Marine Ecology and Conservation, National Sun Yat-sen University
Hsu-Sen Chen
  • Assistant Professor
Department of Aquaculture, National Pingtung University of Science and Technology
Kuo-Shu Chen
  • Associate Researcher
Marine Ecology and Conservation Research Center, National Academy of Marine Research
Ying-Chin Fang
  • Assistant Professor
Department of Oceanography, National Sun Yat-sen University

Cobertura Geográfica

The study was conducted along the western and southwestern coasts of Taiwan. Sampling took place at 41 stations distributed across 10 key locations from Miaoli in the north to Pingtung in the south, encompassing a wide range of latitudes (~22.2°N to ~24.6°N).

Coordenadas delimitadoras Sul Oeste [22,169, 119,756], Norte Leste [24,649, 120,743]

Cobertura Taxonômica

The dataset comprises 10,494 individual records of demersal fishes, representing 219 species across 80 families. All fish specimens were identified to the lowest possible taxonomic level, primarily species, using authoritative references including Fishes of Taiwan (Shen, 1993), Fishes of Japan (Nakabo, 2013), and FishBase. The taxonomic classification follows the Darwin Core standard and the taxonomy is aligned with the GBIF Backbone Taxonomy.

Reino Animalia
Filo Chordata
Class Chondrichthyes, Actinopterygii
Ordem Gadiformes, Gasterosteiformes, Orectolobiformes, Tetraodontiformes, Ophidiiformes, Beryciformes, Stomiiformes, Torpediniformes, Lophiiformes, Carcharhiniformes, Aulopiformes, Myliobatiformes, Chimaeriformes, Scorpaeniformes, Perciformes, Rajiformes, Siluriformes, Anguilliformes, Pleuronectiformes, Clupeiformes, Myctophiformes
Família Hemiscylliidae, Siganidae, Synodontidae, Haemulidae, Bregmacerotidae, Pristigasteridae, Percophidae, Carangidae, Myctophidae, Chimaeridae, Ogcocephalidae, Scyliorhinidae, Ephippidae, Platyrhinidae, Moridae, Apogonidae, Plotosidae, Sternoptychidae, Gerreidae, Hoplichthyidae, Samaridae, Scorpaenidae, Neoscopelidae, Triglidae, Pomacentridae, Monacanthidae, Drepaneidae, Nemichthyidae, Trichiuridae, Labridae, Lophiidae, Mullidae, Dactylopteridae, Urolophidae, Champsodontidae, Serranidae, Chlorophthalmidae, Polynemidae, Engraulidae, Rhinobatidae, Bothidae, Diodontidae, Narcinidae, Priacanthidae, Aploactinidae, Ostraciidae, Centriscidae, Tetraodontidae, Sciaenidae, Macrouridae, Stromateidae, Uranoscopidae, Terapontidae, Callionymidae, Ophichthidae, Nemipteridae, Callionymidae, Citharidae, Antennariidae, Cynoglossidae, Muraenidae, Gobiidae, Ophidiidae, Paralichthyidae, Sillaginidae, Platycephalidae, Acropomatidae, Pomacanthidae, Congridae, Sparidae, Trachichthyidae, Dasyatidae, Proscylliidae, Menidae, Pegasidae, Pinguipedidae, Labridae, Chaetodontidae, Aulopidae, Leiognathidae, Lutjanidae, Syngnathidae, Soleidae

Cobertura Temporal

Data Inicial / Data final 2020-05-17 / 2023-07-15

Dados Sobre o Projeto

This project aimed to investigate the composition of demersal fish communities along the western and southwestern coasts of Taiwan through standardized bottom trawl surveys conducted from 2020 to 2023 aboard the R/V New Ocean Research III. The surveys covered 10 representative coastal locations from Miaoli in the north to Pingtung in the south, with a total of 41 trawl stations spanning from nearshore shallow waters to offshore areas reaching depths of 450 meters. Each haul was conducted using a standardized 6-meter-wide beam trawl, towed at a speed of approximately 2 knots for 30 minutes. A total of 119 hauls were completed, resulting in 10,494 individual records of demersal fishes, representing 219 species across 80 families.

Título Long-term Marine Biodiversity Research and Monitoring Program Supported by MOST and NSTC in Taiwan (2019-2023)
Identificador MOST 108- 2611-M-110-005, 108-2621-M-110-003, 109-2611-M-110-006, 109- 2621-M-110-002, 110-2611-M-110-016, 110-2621-M-110-001, NSTC 111-2611-M-110- 006, 111-2621-M-110-002, 112-2611-M-029, 112-2621-M-110- 002
Financiamento This dataset was generated as part of long-term research projects supported by the Ministry of Science and Technology (MOST) and the National Science and Technology Council (NSTC), Taiwan. The specific grant numbers supporting this work include: MOST: 108-2611-M-110-005, 108-2621-M-110-003, 109-2611-M-110-006, 109-2621-M-110-002, 110-2611-M-110-016, 110-2621-M-110-001 NSTC: 111-2611-M-110-006, 111-2621-M-110-002, 112-2611-M-029, 112-2621-M-110-002
Descrição da Área de Estudo The project focused on the soft-bottom marine habitats along the western and southwestern coasts of Taiwan, covering a wide latitudinal and bathymetric range. The study area includes nearshore and offshore environments featuring complex geomorphological structures such as the Changyun Rise, Penghu Channel, and Kaoping Submarine Canyon.
Descrição do Design The purpose of this study was to investigate the species composition of demersal fish assemblages and the influence of environmental factors along the western and southwestern coasts of Taiwan. A total of 41 sampling stations were established across 10 key locations, spanning a wide range of latitudes (approximately 22.2°N to 24.6°N) and depths (15 to 450 meters). The sampling design included both nearshore and offshore soft-bottom habitats and geomorphologically distinct areas such as the Changyun Rise, the Penghu Channel, and the Kaoping Submarine Canyon. A standardized beam trawl protocol and concurrent environmental measurements were applied to ensure data consistency and facilitate integrated ecological analysis.

Métodos de Amostragem

All sampling followed a standardized protocol using a 6-meter-wide beam trawl with a net body length of 8 meters and a cod-end mesh size of 2.5 cm. Each haul lasted for 30 minutes at a towing speed of approximately 2 knots. The total trawled area per haul was estimated at approximately 11,112 m². Each haul was treated as an independent sampling unit. Onboard, the fish catch was roughly sorted by major taxonomic groups, and all specimens were immediately frozen at −20°C for preservation. After returning to the laboratory, specimens were transferred to laboratory freezers for further identification and data recording. Sampling was conducted during both the warm (May–October) and cold (November–April) seasons to capture seasonal variation in fish assemblages. Stations spanned a depth gradient from 15 to 450 meters, covering both continental shelf and slope environments, and included geomorphologically distinct features such as submarine canyons, underwater rises, and channels.

Área de Estudo The study was conducted along the western and southwestern coasts of Taiwan between May 2020 and July 2023. Sampling took place at 41 stations distributed across 10 key locations from Miaoli in the north to Pingtung in the south, encompassing a wide range of latitudes (~22.2°N to ~24.6°N) and depths (15 to 450 meters). The survey area includes both nearshore and offshore soft-bottom habitats, with geomorphologically distinct features such as the Changyun Rise, the Penghu Channel, and the Kaoping Submarine Canyon. The trawl surveys targeted demersal fish communities inhabiting unconsolidated sedimentary substrates across continental shelf and slope zones.
Controle de Qualidade All fish specimens were identified by experienced taxonomists specializing in marine fish fauna of Taiwan. Species identification was based on morphological characteristics following standard taxonomic keys and literature, including Shen (1993), Nakabo (2013), and FishBase (2024). Scientific names were verified and standardized according to the updated taxonomy in FishBase and the Taiwan Fish Database (FishDB). Data quality control was conducted throughout the data compilation process. Species names, geographic coordinates, sampling dates, and depth information were checked for consistency and errors. The dataset was structured and formatted following the Darwin Core standard for publication on GBIF.

Descrição dos passos do método:

  1. All fish specimens were identified to the lowest possible taxonomic level, typically to species, and the number of individuals per species was recorded. Some specimens were retained as vouchers. Taxonomic identification followed authoritative references, including Shen (1993), Nakabo (2013), and FishBase (2025).

Metadados Adicionais