Erwin J. J. Sieben

3 Questions 4 Answers 0 Followers

Questions related from Erwin J. J. Sieben

How do I interpret negative values of overlap when conducting variation partitioning in CANOCO ?

I conducted a partial CCA analysis in Canoco 5 on a dataset with environmental variables belonging to three distinct spatial scales. When doing variation partitioning it is normal to get some...

10 December 2019 5,376 2 View

Are there systematic ways to monitor vegetation changes from photographs ?

I am trying to get a grasp on the dynamics of wetland vegetation between wet and dry years. I started monitoring vegetation in a wetland during a dry spell but from the preceding wetter years I...

13 December 2018 3,727 4 View

How should we approach research into conservation and sustainability when a civilization is already in decline ?

Joseph Tainter taught us in 1988 that civilizations have a limited lifespan due to the marginal returns on investments declining over time. This can be regarded as a theoretical issue that has...

01 January 1970 2,734 4 View