SLSC 350.3 Lecture Notes - Lecture 16: Novel Ecosystem, Ecological Threshold
15 Apr 2019
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Document Summary
New species combinations, non native species driver di erent interactions (assisted migration) Result from deliberate / inadvertent human actions. From the ecosystem moving from the historic to novel there is biotic change, species loss, and introduction of species. Synergistic changes, abiotic and biotic are reinforcing each other from the normal historic range into the novel range. (1,2,3) Change biotic composition, planting native species, getting rid of invasive. Changing abiotic conditions we can do this by planting trees that will change forest. It"s really hard to push system back down into the historic background. Inside the hard barrier restoration is feasible, and you will get back into a historical norm. O the outside you can problem restore structure and function but no pre-disturbance state, this would be reclamation projects. When the systems are on the top right it is di cult and economically not viable to push the system to the historical norm, this is where novel ecosystem can be embraced.
