Spatiotemporal patterns of salmon winter habitat usage in the Northeast Pacific uncovered by environmental DNA

Amplicon sequence variant (asv) dataset from multi amplicon metabarcoding environmental DNA analysis from the International Year of the Salmon Signature expedition to the Northeast Pacific in Feb/Mar 2022. A table of all asv generated in the study is provided  in ASV.csv, broken down by amplicon and sample and listing the occurance of said asv in said sample. Further, total reads per amplicon/sample bin are recorded as well as a taxonomic assignment. Note that this data is provided prior to filtering, e.g. \"Homo sapiens\" reads are abundant and should be considered contamination. The metadata to sampling stations is provided in the sample_metadata.csv which contains the date, lat/long, as well as detailed environmental metadata associated with the sample. Refer to Deeg et al. \"Spatiotemporal patterns of salmon winter habitat usage in the Northeast Pacific uncovered by environmental DNA\" ICES Journal of Marine Science 2025 for detailed information on sample collection, sequencing and..., , # Spatiotemporal patterns of salmon winter habitat usage in the Northeast Pacific uncovered by environmental DNA

Dataset DOI: 10.5061/dryad.c2fqz61nn

## **Files and variables**

File: ASV.csv

Variables: 

* sample_id(_tech_rep): Sample ID to match the metadata. \"_A\" , \"_B\" suffix denotes technical replicates
* asv: Amplicon sequence variant sequence
* occurrence_count: Number of occurrences of asv in sample
* forward_primer: Forward primer used to amplify the amplicon
* reverse_primer: Reward primer used to amplify the amplicon
* taxon: Operational taxonomic unit assigned to the asv
* reads_amplicon_sample: Total number of reads generated in sequencing for this amplicon and sample combination

File: sample_metadata.csv

Variables:

* sample_ID: Sample ID
* vessel: Sampling vessel
* doy: Day of year 2022
* method: Collection method
* method_detail:  Collection method detail
* collection_system: Collection method system
* filt_sys: Filtration system
* sample_depth_m: Sampling depth
* l...,