Load picophytoplankton abundance data measured by flow cytometry. Picophytoplankton are tiny photosynthetic cells (0.2-2 µm) that are important primary producers in oligotrophic (nutrient-poor) waters.
pr_get_NRSPico()A dataframe in long format with picophytoplankton data including:
StationCode, StationName - Station identifiers
SampleTime_Local - Local sampling date and time
SampleDepth_m - Sampling depth (numeric, in metres)
Parameters - Cell type (Prochlorococcus, Synechococcus, or Picoeukaryotes)
Values - Cell abundance (cells/mL)
The function retrieves abundance data for three groups of picophytoplankton:
Prochlorococcus_cellsmL - Prochlorococcus abundance (cells/mL).
A tiny cyanobacterium found in warm, nutrient-poor tropical and subtropical waters.
Typically absent or in very low numbers in temperate Australian waters.
Synechococcus_cellsmL - Synechococcus abundance (cells/mL).
A cyanobacterium found throughout Australian waters, more tolerant of cooler
temperatures and higher nutrients than Prochlorococcus.
Picoeukaryotes_cellsmL - Picoeukaryotic algae abundance (cells/mL).
Small eukaryotic phytoplankton including prasinophytes and small diatoms.
Quality control flags are applied using pr_apply_Flags(). Water column (WC)
samples are excluded. A small constant is added to zero values to allow log
transformations in plotting.
pr_get_NRSMicro() for broader microbial community data,
pr_get_NRSEnvContour() to format data for contour plots,
pr_plot_NRSEnvContour() for visualisation
df <- pr_get_NRSPico()
# Examine which stations have picophytoplankton data
table(df$StationCode, df$Parameters)
#>
#> Picoeukaryotes_cellsmL Prochlorococcus_cellsmL Synechococcus_cellsmL
#> DAR 465 465 465
#> YON 676 676 676
#> NIN 0 0 0
#> NSI 864 864 864
#> ROT 913 913 913
#> ESP 0 0 0
#> PHB 790 790 790
#> KAI 343 343 343
#> VBM 44 44 44
#> MAI 934 934 934
# Filter for Synechococcus at North Stradbroke Island
df_syn <- df %>%
dplyr::filter(Parameters == "Synechococcus_cellsmL", StationCode == "NSI")