Description
This dataset originated from a specific bio-surveillance field study conducted in the fishing port of Algiers during spring 2021 (Kacimi, 2021). Data was collected by scraping biological material from hard substrates like floating structures and port structures at specific stations. The dataset contains records of identified fouling species, including their taxonomic classification (across Porifera, Bryozoa, Ascidiacea), status (indigenous, non-indigenous, or cryptogenic), and estimated abundance (visual assessment or frequency). Taxonomic nomenclature was verified using the World Register of Marine Species (WoRMS). This dataset serves as a baseline for future assessments of NIS in Algerian ports, though acknowledging limitations in taxonomic coverage and sampling extent.
Data Records
The data in this sampling event 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 7 records.
2 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.
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:
Akrour S (2025). Biofouling of ship hulls in the Port of Algiers in 2021. Version 2.1. Hellenic Center for Marine Research. Samplingevent dataset. https://doi.org/10.25607/sqqkm5
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is Hellenic Center for Marine Research. 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: 8561a38a-5319-4d84-9f82-a0c21eca6fa0. Hellenic Center for Marine Research publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Biofouling; Non-Indigenous Species (NIS); Species Inventory; Observation; Algiers Port; Samplingevent
Contacts
- Originator ●
- Point Of Contact
https://orcid.org/https://orcid.org/0000-0002-2824-4985
- Point Of Contact
- Custodian Steward
- Custodian Steward
- Content Provider
- Custodian Steward
Geographic Coverage
Port of Algiers Latitude: from 36.7847 to 36.7852 Longitude: from 3.0648 to 3.0659
| Bounding Coordinates | South West [36.755, 3.047], North East [36.789, 3.086] |
|---|
Taxonomic Coverage
No Description available
| Phylum | Porifera (Sponges), Bryozoa (Bryozoa) |
|---|---|
| Subphylum | Crustacea |
| Class | Ascidiacea (Ascidians) |
Temporal Coverage
| Start Date / End Date | 2021-03-01 / 2021-05-31 |
|---|
Project Data
No Description available
| Title | Biofouling of ship hulls in the Port of Algiers in 2021 |
|---|
Sampling Methods
Scraping biological material from hard substrates like floating structures and port structures
| Study Extent | Observations of Non-indigenous species in Port of Algiers during spring 2021 |
|---|---|
| Quality Control | WoRMS Taxon Match Tool – Verify scientific names. (www.marinespecies.org/aphia.php?p=match) OBIS Map Tool – Validate coordinates and estimate uncertainty. (obis.org/maptool/) NERC Vocabulary Server (NVS) – Assign standardized terms with IDs. (vocab.nerc.ac.uk/) LifeWatch & EMODnet QC Tool – Cross-check dataset quality. (rshiny.lifewatch.be/BioCheck/) |
Method step description:
- Data Processing Workflow 1. Dataset preparation – Formatting into tidy data (variables as columns, one observation per row, values in cells). 2. Field name standardization – Updating column names to match Darwin Core (DwC) standards. 3. Table separation – Splitting into three tables: Event (sampling events), Occurrence (species records), and eMoF (Extended Measurement or Facts). 4. Vocabulary alignment – Assigning standardized terms using NERC NVS Vocabulary. 5.Quality control – Cross-validation with LifeWatch & EMODnet Biology QC Tool. 6. Publication – Final upload to the Integrated Publishing Toolkit (IPT).
Bibliographic Citations
- KACIMI, A., BOUDA, A., SIEVERS, M., BENSARI, B., & BACHARI, N. (2022). MODELING THE RISK OF INTRODUCING NON-NATIVE SPECIES THROUGH SHIP HULL BIOFOULING BY PERCENT COVER CALCULATION. In 2nd Mediterranean Symposium on the Non-Indigenous Species (p. 48). https://scholar.google.com/citations?view_op=view_citation&hl=fr&user=F_RQ2gwAAAAJ&citation_for_view=F_RQ2gwAAAAJ:9yKSN-GCB0IC
- KACIMI, A. (2023). La biosalissure « biofouling » de la coque des navires, une menace pour la biodiversité du milieu marin. PhD thesis. https://theses.hal.science/tel-04205319/file/Th%C3%A8se%20Adel-KACIMI-16-03-2023.pdf
Additional Metadata
| Alternative Identifiers | 10.25607/sqqkm5 |
|---|---|
| http://ipt.medobis.eu/resource?r=biofoulingofshiphullsintheportofalgiersin2021 |