Forest Service jobs for 2019 are now being advertised. You will only have until October 12, 2018 to apply for next spring/summer jobs! I recommend you apply now even if you aren't sure what you'll be doing next year because this will be the only opportunity to apply for Forest Service seasonal work. http://www.usajobs.gov/ You'll want to search for Biological Science Technician Plants or Biological Science Technician Natural Resources (for GS-5). If you are interested in lichen focused work be sure to apply for positions in John Day Oregon (Malheur NF). The job won't require residence in John Day and the work takes place all around OR and WA.