Dataset

Kelp Dataset

OBIS Japan Open in mapper Explore occurrences

This dataset contains kelp occurrence data around Japan which were registered from various sources in Hokkaido and Japan by S9-5 supported by the Environment Research and Technology Development Fund (S9) of the Ministry of the Environment, Japan.

Citation
Nakaoka, M., Watanabe, K. and Yotsukura, H. (2017) Kelp occurrence data around Japanese water extracted from literature. Available at http://www.godac.jamstec.go.jp/bismal/e/dataset/S9-5_Kelp.
Published
April 24, 2026 at 07:24
License
This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License
URL
https://www.godac.jamstec.go.jp/ipt/resource?r=s9-5_kelp
Archive
https://www.godac.jamstec.go.jp/ipt/archive.do?r=s9-5_kelp

Contacts

Masahiro Nakaoka
Hokkaido University

20,248
total submitted occurrences
18,261
accepted occurrences
586
taxa
542
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 2,398
11.8%
eventDate 2
0.0%
maximumDepthInMeters 20,030
98.9%
minimumDepthInMeters 20,030
98.9%
scientificNameID 1,994 18
9.9%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 20,030
98.9%
ON_LAND 4,497
22.2%
NO_MATCH 1,987
9.8%
NO_ACCEPTED_NAME 391
1.9%
DEPTH_EXCEEDS_BATH 68
0.3%
WORMS_ANNOTATION_RESOLVABLE 25
0.1%
MARINE_UNSURE 1
0.0%

Measurement types

DNA derived data