Data from: Foundational kelp species reveal links between host traits, the environment, and the associated microbial community
Data files
Oct 04, 2025 version files 31.85 KB
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Pfister_NereocystisGeography_RoySocOpen_Oct2025.csv
25.79 KB
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ReadMe_Pfister_RoySocOpen_Oct2025.md
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README.md
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Abstract
Canopy kelp are foundational species in coastal ecosystems and host diverse bacterial communities. The dataset was used to test the association between bull kelp (Nereocystis luetkeana) host traits, blade-associated bacterial taxa, and seawater environmental features across nine sites spanning more than 200 km in Washington state. Traits related to kelp fitness, such as carbon fixation and nitrogen content,t as well as environmental features, are included in the dataset.
Dataset DOI: 10.5061/dryad.j6q573nrw
datafile name: Pfister_NereocystisGeography_RoySocOpen_Oct2025.csv
Description of the data and file structure
The data collected tested kelp uptake of carbon, the release of DOC, and tissue features across sites in Washington state. Data on surrounding nutrients are also included. NA indicates that data were not collected. Data on the microbial taxa present are archived with NCBI, #PRJNA1301461
Headings for each column of the data are described in order:
year
date
month
locale - within coastal Washington state; see Methods and Figure 1 in manuscript
Region – locale divided into 3 regions in coastal Washington state
Replicate – per site per year
wetmass_g – wetmass of Nereocystis tissue used in estimating carbon fixation, reported in grams
drymass_g - drymass of Nereocystis tissue used in estimating carbon fixation, reported in grams
mgCfixed_gdrymass_hr – the mg of Carbon fixed per g drymass of Nereocystis per hour
DOCmgl_release_gdrymass_hr_corr01 - the mg of dissolved organic Carbon released per g drymass of Nereocystis per hour, with 0.01 added to all values to allow analyses of log values for all and to avoid dividing by zero (see below)
DOC_um_hr_drymass - the uM of Carbon dissolved organic Carbon released per g drymass of Nereocystis per hour
to_po4 - the initial P04 concentration in uM
to_si - the initial SiO4 concentration in uM
to_no3 - the initial NO3 concentration in uM
to_no2 - the initial NO2 concentration in uM
to_nh4 - the initial NH4 concentration in uM
to_DIN - the initial dissolved inorganic nitrogen concentration in uM
uM_DOC_to -the initial dissolved organic carbon concentration in uM
tf_po4 - the final P04 concentration in uM
tf_si -the final SiO4 concentration in uM
tf_no3 - the final NO3 concentration in uM
tf_no2 - the final NO2 concentration in uM
tf_nh4 - the final NH4 concentration in uM
tf_DIN - the final dissolved inorganic nitrogen concentration in uM
no3_uptake_h_gdm - the uM change in NO3 per hour per gram drymass of Nereocystis
bulb_diam - widest part of bulb, in mm
blade_length - blade length used in assay, in cm
Repro – indication of whether kelp is reproductive (R) or not (NR)
deln - the delta 15N, stable isotope ratio of Nitrogen, in Nereocystis tissue
delc - the delta 13C, stable isotope ratio of Carbon, in Nereocystis tissue
pctn - the percent of tissue nitrogen (as dry mass) in Nereocystis tissue
pctc - the percent of tissue carbon (as dry mass) in Nereocystis tissue
c_n - the ratio of tissue carbon to tissue nitrogen (pctc/pctn)
temperature - in deg C
salinity - in ppt
ratioCfixtoDOCrel - the ratio of inorganic carbon fixed to dissolved organic carbon released (mcCfixed_gdrymasshr/DOCmgl_release_gdrymass_hr_corr01)
Access information
Data on the microbial taxa present are archived with NCBI, #PRJNA1301461