A Assignment: 04-02

For all virtual species created during this session, generate a dataset containing sampled presence-absence points. Follow these steps:

1. Sample Presence-Absence Points
   • For each species, sample varying amounts of presence-absence points.
   • Ensure diversity in dataset sizes: some species should have large datasets, while others should have smaller ones.
2. Introduce Spatial Sampling Bias
   • For at least some species, introduce spatial sampling bias by limiting the sampled points to specific regions.
3. Add Additional Sampling Bias
   • Incorporate other forms of bias, such as introducing an error probability in the presence-absence data for selected species.
4. Update the Virtual Species .RDS File
   • Add the generated datasets to the .RDS file of virtual species created in the previous session.
   • Use the following script as a reference for modifying the .RDS file:
     
5. Prepare Files for Submission
   • Compress all .RDS files of the virtual species into a single .zip archive.
   • Create a PDF document describing each species, including details such as:
     • Niche breadth.
     • Environmental variables used.
     • Response functions of the species to environmental variables.
     • Error probabilities in the sampled presence-absence points.
   • Upload the .zip file and the PDF document to ILIAS.