Long-term shifts in intertidal predator and prey communities in the Wadden Sea and consequences for food requirements and supply Author: A.S. Jung (Sarina.Jung@gmx.de) Contributors Dekker, R. (Rob) Germain, M. (Myriam) Philippart, C.J.M. (Katja) Witte, J.IJ. (Hans) van der Veer H.W. (Henk) This is a read me instruction for the above mentioned dataset uploaded to 4TU The uploaded files are a mix of data sheets in *.txt and *.csv format and R scripts (*.R). Additional there is a *.Rnw file that can be used to produce a PDF with the plots of the publication (Additional software for LaTeX compilation necessary). Some headers are reoccurring throughout the files and mean the following: Cruiseid: Individual ID for each sampling event consisting of the Year and a two digit running ID (e.g. 197503 is the third sampling event in 1975) Species: Species are coded in numbers, a list of the full list of species and their corresponding number can be found in the file “Names.csv” Age: Age class of the species runs from 0 to 2 (0-group=0, I-group=1, II-group=2), all species with no age distinction have age 0. datum: sampling date in Year-Month-Day format TBioCrus: Total biomass per cruise in mg 1000 m-2 NumStat: Numbers of stations sampled in that cruise, used to correct mean biomass and density Length: Length in mm LK: length class in 0.5 cm steps TNum: total number uncorrected for length class sampling LN: Total number of age classes sampled to correct total density TNum1000m: Density in Ind. 1000 m-2 Help: Artificial indicator to help identify data that has been stored as total numbers per cruise instead of per station TNumCr: Total density uncorrected for number of stations sampled TNumCrus: Density in Ind. 1000 m-2 per cruise G-a, G-b: growth parameters from first estimate, only parameters for crustaceans get used Q10, WW-AFDM, MaintC, AssiEff: Species specific coefficients used in calculations that are corresponding to Q10, wet-weight to ash-free-dry-mass conversion factor, maintenance coefficient and assimilation efficiency a, b, ref: length-weight parameters (a and b) as well as an indicator as to how weight is calculated (ref), ref=1 -> (a*Length)^b; ref=5 -> a*L^b List of files with Filename, Type, Description, and header (if applicable) in order, for description of headers see above: Biomass *.csv File with total biomass of each species and age class in mg 1000 m-2 Cruiseid,"datum","Species","Age","TBioCrus" ---------------------- Density *.csv File with density of each age class of each species at each station in Ind. 1000 m-2 Cruiseid,"datum","Station","NumStat","Species","Length","Age","T Num","LN","TNum1000m" ---------------------- Density2 *.csv File with density of each length class and age class of each species in Ind. 1000 m-2 Cruiseid,"NumStat","datum","Species","Age","Length","LK","Help", "TNumCr","TNumCrus" ---------------------- Density-Biomass *.csv file with Density and biomass of each age class of each species, same units as above Cruiseid,"datum","Species","Age","TNumCr","Year","NumCrus","Lat Name","TBioCrus" ---------------------- Names *.csv List of all species numbers with their corresponding Latin names (LatName) Species,"LatName" ---------------------- Temp *.csv Mean temperature data (in degree Celsius) for each cruise Cruiseid,"Temp" ---------------------- SpeciesCaughtY *.csv List if a certain species was caught at all in a certain cruise to include 0 cases Cruiseid,"Species","Age","datum","Year","Ind" ---------------------- macrobenthos *.csv Biomass of potential macrozoobenthic prey in each year (in Year, variable, Type, value ---------------------- Coeffcients *.txt Coefficients for each of the analyzed species Species, G-a, G-b, Q10, WW-AFDM, MaintC, AssiEff, a, b, ref ---------------------- 2014-02-05FoodItems *.txt File with proportion of Macrozoobenthic prey (MP) to total diet of each species and age class Species, Age, MP ---------------------- Growth *.R R script to calculate growth of the species ---------------------- FoodIntake *.R R script to calculate the food requirements ---------------------- FunctionsFI *.R R functions file with functions used for calculations of growth and food requirement ---------------------- Plots *.Rnw Rnw file to produce plots