說明
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.
資料紀錄
此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 119 筆紀錄。
亦存在 1 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
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
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 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 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: 56fc46e6-3b01-4673-be20-e5f81ba405e4。 Department of Oceanography, National Sun Yat-sen University, Kaohsiung Taiwan 發佈此資源，並經由Taiwan Biodiversity Information Facility同意向GBIF註冊成為資料發佈者。
關鍵字
Samplingevent; bottom trawl; Taiwan Strait; fish assemblage; open biodiversity data
聯絡資訊
- 出處 ●
- 連絡人
https://orcid.org/0000-0002-1868-7061
- 研究主持人
地理涵蓋範圍
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).
| 界定座標範圍 | 緯度南界 經度西界 [22.169, 119.756], 緯度北界 經度東界 [24.649, 120.743] |
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分類群涵蓋範圍
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.
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Chondrichthyes, Actinopterygii |
| Order | Gadiformes, Gasterosteiformes, Orectolobiformes, Tetraodontiformes, Ophidiiformes, Beryciformes, Stomiiformes, Torpediniformes, Lophiiformes, Carcharhiniformes, Aulopiformes, Myliobatiformes, Chimaeriformes, Scorpaeniformes, Perciformes, Rajiformes, Siluriformes, Anguilliformes, Pleuronectiformes, Clupeiformes, Myctophiformes |
| Family | 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 |
時間涵蓋範圍
| 起始日期 / 結束日期 | 2020-05-17 / 2023-07-15 |
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計畫資料
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.
| 計畫名稱 | Long-term Marine Biodiversity Research and Monitoring Program Supported by MOST and NSTC in Taiwan (2019-2023) |
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| 辨識碼 | 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 |
| 經費來源 | 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 |
| 研究區域描述 | 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. |
| 研究設計描述 | 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. |
取樣方法
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.
| 研究範圍 | 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. |
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| 品質控管 | 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. |
方法步驟描述:
- 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).