L4 plankton abundance time-series
L4.AllDates.RdThis dataset is a plankton abundance time-series collected at the Western Channel Observatory L4 station. It contains zooplankton abundances in #/m^3, phytoplankton abundances in #/ml, and sea surface temperature in degrees C. Sampling dates for zooplankton, phytoplankton, and surface temperature values are not always aligned, resulting in NA values within the time-series.
Usage
data(L4.AllDates)Format
A data frame with 1123 observations on the following 20 variables.
date | sampling dates; often read into R as a factor variable | |
cnidarian | e.g., hydromedusae and siphonophores | |
amphipod | e.g., gammarids | |
chaetognath | Sagitta spp. | |
krill | Euphausiids (all stages) | |
pteropod | Clione and Limacina | |
tunicate | larvaceans | |
cladoceran | Evadne spp. and Podon spp. | |
calanoid.lg | large calanoid copepods (>2 mm) | |
calanoid.sm | small calanoid copepods (<2 mm) | |
cyclopoid | cyclopoid copepods | |
poecilostom | poecilostomatoid copepods | |
harpact | harpacticoid copepods | |
diatom | phytoplankton: diatoms | |
dino | phytoplankton: dinoflagellates | |
other.algae | phytoplankton: e.g., coccolithophores, green | |
cirripedia | meroplankton: barnacle nauplii and cyprids | |
mero.grazers | meroplankton: other grazers, e.g., gastropod and bivalve larvae | |
decapod | meroplankton: e.g., crab and shrimp larvae | |
surface.temp | sea surface temperature (degrees C) |
References
Eloire D, Somerfield PJ, Conway DVP, Halsband-Lenk C, Harris R, and Bonnet D (2010) Temporal variability and community composition of zooplankton at station L4 in the Western Channel: 20 years of sampling. Journal of Plankton Research 32:657-679 [doi:10.1093/plankt/fbq009]
Southward AJ, Langmead O, Hardman-Mountford NJ, Aiken J, Boalch GT, Dando PR, Genner MJ, Joint I, Kendall MA, Halliday NC, Harris RP, Leaper R, Mieszkowska N, Pingree RD, Richardson AJ, Sims DW, Smith T, Walne AW, and Hawkins SJ (2005) Long-term oceanographic and ecological research in the western English Channel. Advances in Marine Biology 47:1-105 [doi:10.1016/S0065-2881(04)47001-1]
Scheef, LP, DE Pendleton, SE Hampton, SL Katz, EE Holmes, ME Scheuerell, and DG Johns (2012) Assessing marine plankton community structure from long-term monitoring data with multivariate autoregressive (MAR) models: a comparison of fixed station vs. spatially distributed sampling data. Limnology & Oceanography: Methods 10:54-64.
Examples
data(L4.AllDates)
summary(L4.AllDates)
#> date cnidarian amphipod chaetognath
#> 1/10/1996: 1 Min. : 0.00 Min. : 0.000 Min. : 0.00
#> 1/10/2000: 1 1st Qu.: 3.60 1st Qu.: 0.000 1st Qu.: 3.15
#> 1/11/1999: 1 Median : 25.53 Median : 0.000 Median : 13.12
#> 1/12/1998: 1 Mean : 85.21 Mean : 2.501 Mean : 30.96
#> 1/13/1992: 1 3rd Qu.: 93.87 3rd Qu.: 1.462 3rd Qu.: 35.43
#> 1/13/1997: 1 Max. :4798.54 Max. :103.230 Max. :568.34
#> (Other) :1117 NA's :220 NA's :220 NA's :220
#> krill pteropod tunicate cladoceran
#> Min. : 0.000 Min. : 0.00 Min. : 0.000 Min. : 0.0
#> 1st Qu.: 0.000 1st Qu.: 0.00 1st Qu.: 1.595 1st Qu.: 0.0
#> Median : 0.000 Median : 4.18 Median : 29.400 Median : 19.6
#> Mean : 1.166 Mean : 31.17 Mean : 93.435 Mean : 236.9
#> 3rd Qu.: 0.320 3rd Qu.: 17.54 3rd Qu.: 106.710 3rd Qu.: 192.7
#> Max. :40.160 Max. :3435.78 Max. :3159.970 Max. :7634.1
#> NA's :220 NA's :220 NA's :220 NA's :220
#> calanoid.lg calanoid.sm cyclopoid poecilostom
#> Min. : 0.00 Min. : 1.97 Min. : 0.0 Min. : 0.00
#> 1st Qu.: 10.86 1st Qu.: 471.01 1st Qu.: 100.4 1st Qu.: 65.58
#> Median : 36.86 Median : 901.52 Median : 208.9 Median : 194.75
#> Mean : 78.01 Mean : 1292.39 Mean : 363.6 Mean : 412.37
#> 3rd Qu.: 91.55 3rd Qu.: 1625.71 3rd Qu.: 425.5 3rd Qu.: 548.02
#> Max. :1915.19 Max. :11017.49 Max. :4790.6 Max. :5745.03
#> NA's :220 NA's :220 NA's :220 NA's :220
#> harpact diatom dino other.algae
#> Min. : 0.00 Min. : 0.36 Min. : 0.000 Min. : 279.7
#> 1st Qu.: 4.73 1st Qu.: 6.92 1st Qu.: 0.102 1st Qu.: 1563.0
#> Median : 16.37 Median : 25.74 Median : 0.740 Median : 2359.0
#> Mean : 41.36 Mean : 166.75 Mean : 68.933 Mean : 2811.1
#> 3rd Qu.: 46.95 3rd Qu.: 119.15 3rd Qu.: 9.957 3rd Qu.: 3655.1
#> Max. :818.95 Max. :5055.86 Max. :4810.810 Max. :10882.0
#> NA's :220 NA's :496 NA's :496 NA's :496
#> cirripedia mero.grazers decapod surface.temp
#> Min. : 0.00 Min. : 0.00 Min. : 0.000 Min. : 7.30
#> 1st Qu.: 0.00 1st Qu.: 25.01 1st Qu.: 3.155 1st Qu.:10.20
#> Median : 12.63 Median : 64.26 Median : 9.980 Median :12.80
#> Mean : 321.14 Mean : 169.01 Mean : 15.946 Mean :12.82
#> 3rd Qu.: 70.07 3rd Qu.: 170.24 3rd Qu.: 21.495 3rd Qu.:15.35
#> Max. :19543.52 Max. :6780.94 Max. :160.000 Max. :20.30
#> NA's :220 NA's :220 NA's :220 NA's :245