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INTRODUCTION
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“Are ecosystem engineering traits fixed or flexible: A study on clonal expansion strategies in co-occurring dune grasses”
Carlijn Lammers, Clea van de Ven, Tjisse van der Heide, Valérie Reijers

Version: 16-10-2020

 This readme file describes the data accompanying the above publication. For any further queries please contact: 
carlijn.lammers@nioz.nl

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CONTENT
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All files contain header descriptions to explain variables. 

Data files of a field survey, field experiment and controlled experiment between May 2020 and June 2021. 

Field survey 2021, determining seed numbers at three locations along the coast of the Dutch Wadden Sea island Texel. 
- Datafile “field_survey_seeds.csv”, file containing survey data including gps, elevation, proximity to vegetation and seed numbers. 

Field experiment 2020, determining the effect of habitat modification on recruitment of marram grass at three locations along the coast of the Dutch Wadden Sea island Texel. . 
- Datafile “field_experiment_monitoring.csv”, file containing monitoring data including shoot numbers, shoot lengths and sediment bed level change. 

- Datafile “field_experiment_logger.csv”, file containing logger data for temperature and light for the experimental locations. 

- Datafile “field_experiment_soil.csv”, file containing the measured soil moisture and salinity levels. 

- Datafile “field_gps_duneprofile.csv”, file containing elevation and distance data used to create dune profiles for each location. 

- Datafile “field_experiment_raindata.csv”, file containing the rain data of the closest weather station to the experimental locations. 

Controlled experiment 2021, determining the effect of burial on seed germination and emergence. 
- Datafile “lab_experiment_germination.csv”, file containing seed emergence over time 

- Datafile “lab_experiment_germination2.csv”, file containing the final seedling emergence and seed germination numbers per burial depth. 

- Datafile “lab_experiment_lengths.csv”, file containing the final length data including shoot and root lengths. 

- Datafile “lab_experiment_weights.csv”, file containing the final weight data including shoot and root weight. 

- Datafile “lab_experiment_growth.csv”, file containing the shoot length of specific individuals over time.