The Aquatic Ecological Survey of Regular Monitoring Stations at the Rivers Administered by the Central Government of Taiwan

Data as a DwC-A file	download 46,068 records in English (907 KB) - Update frequency: as needed
Metadata as an EML file	download in English (10 KB)
Metadata as an RTF file	download in English (11 KB)

Description

A comprehensive ecological monitoring dataset covering 26 rivers (24 centrally-managed rivers and 2 cross-municipal rivers) in Taiwan, conducted through 250 fixed monitoring stations. The surveys are performed in 3-year cycles as part of the "River Situation Investigation and Conservation Measures Improvement Plan (中央管流域整體改善與調適計畫)."

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 46,068 records.

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.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Pan J, He C (2025). The Aquatic Ecological Survey of Regular Monitoring Stations at the Rivers Administered by the Central Government of Taiwan. Version 1.6. Water Resources Agency,Ministry of Economic Affairs. Occurrence dataset. https://ipt.taibif.tw/resource?r=fixed_station_river_investigation&v=1.6

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Water Resources Agency,Ministry of Economic Affairs. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 419e0d91-3510-485d-96f2-40499fa58495. Water Resources Agency,Ministry of Economic Affairs publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Taiwan Biodiversity Information Facility.

Keywords

Occurrence; Observation

Contacts

Jhih-Hong Pan

Metadata Provider ●
Originator

Associate Researcher

Water Resources Planning Branch, Water Resources Agency, Ministry of Economic Affairs

Chih-Hsiung He

Originator ●
Point Of Contact

Associate Engineer

Water Resources Planning Branch, Water Resources Agency, Ministry of Economic Affairs

Geographic Coverage

Survey covers at the rivers administered by the central government.

Bounding Coordinates	South West [22.014, 120.077], North East [25.229, 121.83]

Temporal Coverage

Start Date / End Date	2022-05-01 / 2023-08-31

Sampling Methods

Fish: Electrofishing was the primary method used. The investigators would proceed from downstream to upstream. Fish traps with meat bait were used when necessary. Shrimp and crab: Shrimp traps with food bait were used and left overnight before collection. Direct observation was used in tidal flat environments, while stone turning was used in mountainous areas. Aquatic insects: The fixed-area sampling method was mainly used. A Surber net was used to disturb the substrate within a 50 cm x 50 cm grid, allowing aquatic insects to flow into the net with the current. Dip nets were used in environments unsuitable for the Surber net, such as those with excessive water depth, estuaries, lentic water (deep pools), or muddy substrates.

Study Extent	The survey aims to cover 250 aquatic ecological sampling stations in all major water systems in the main Taiwan island.
Quality Control	Time, location, sampling methods used, and collected organisms were recorded for each survey. Identification and classification of aquatic insects were conducted by professionals. All species identified , including those that could not be identified to the species level , were given a taxonConceptID. Chinese and scientific names of species were referenced from existing databases (mainly TaiCOL - Catalogue of Life Taiwan, and TBN - Taiwan Biodiversity Network), and notes were given in the taxonRemarks column.

Study Extent

The survey aims to cover 250 aquatic ecological sampling stations in all major water systems in the main Taiwan island.

Quality Control

Time, location, sampling methods used, and collected organisms were recorded for each survey. Identification and classification of aquatic insects were conducted by professionals. All species identified , including those that could not be identified to the species level , were given a taxonConceptID. Chinese and scientific names of species were referenced from existing databases (mainly TaiCOL - Catalogue of Life Taiwan, and TBN - Taiwan Biodiversity Network), and notes were given in the taxonRemarks column.

Method step description:

Sampling Station Establishment: Sampling stations were established in the selected water systems based on the research objectives and scope. Considerations included whether the stations were previous situational survey stations, hydrological and water quality monitoring stations, the similarity of habitat types, and accessibility for investigators.
Sample Collection: Fish, shrimp, crabs, and aquatic insect samples were collected using methods such as electrofishing, shrimp trapping, and fixed-area sampling.
Sample Identification and Classification: Collected samples were identified, classified, and relevant information recorded.

Additional Metadata

Alternative Identifiers	https://ipt.taibif.tw/resource?r=fixed_station_river_investigation