Estimating germination rates: continuation of the climate chamber experiment with new provenances
Germination curves obtained from the germination data for silver fir and caucasian fir (top graph), and European and oriental beech (bottom graph); dotted lines indicate moist treatments, solid lines indicate dry treatment.
Germination descriptive results
Depending on the chosen variable, you can explore :
the percentage of germinated seeds in each garden ("Micro-garden")
the number of germinated seeds for each germination stage ("Germination stage")
the percentage of germinated seeds for each provenance ("Provenances-Abies" or "Provenances-Fagus")
the evolution of the percentage of germinated seeds in each garden ("Evolution-Abies" or "Evolution"Fagus")
the number of germinated seeds for each provenance and in each garden ("Heatmap-Abies" or "Heatmap-Fagus")
Estimating germination rates using a climate chamber experiment
Master thesis by Johannes Alt
Germination curves obtained from the germination data for silver fir (A), and European beech (C); dotted line indicates higher temperature cycle (10-20°C); line defines the end of the experiment; day 72 equals absolute germination rate
Summer trials 2021
The very first trials of MyGardenOfTrees!
Enthusiastic citizens and NGOs from Scotland, France, Italy, Switzerland and Hungary helped us develop different steps of the project. Together, we tested the first version of the experimental design and particularly the effect of seed predation by rodents (using mesh cages) and competition (using weed exclusion sheets).
While competition from other seedlings seemed not to have a strong effect, seeds and seedlings predation from mice and snails was a clear issue. Because of these results, we designed a new kind of seed protector that we used for the following trials.
Citizen science is a beautiful way to do research which benefits both the scientific community and the public. Thanks to our early participants, we could go through the different steps of engaging and working with citizens and prepare us for the large-scale participation of the next trials!