Human impacts on ecosystems can result in persistent compositional shifts that are difficult to reverse even after relaxation from perturbations. Considerable debate remains on whether these observed shifts in ecosystems are due to the existence of tipping points and systems with alternative attractors, or whether observed shifts in ecosystems represent communities in alternative trajectories that will eventually reach a common stable point. In addition to human perturbations, ecosystems are also experiencing other transient dynamics, such as increased climate variability, which could promote or prevent state shifts. Using cross-site synthesis of LTER experiments that have simulated human perturbations or climate variability, this synthesis effort will test whether and which observed compositional shifts are a result of critical transitions or transient dynamics. Researchers will use these data to develop and inform theory that will improve predictions on the magnitude and frequency of perturbations and climate variability needed to promote or prevent lasting shifts in ecosystem composition.
The Phoenix Area Social Survey shows how people drive urban-ecological change
Winter is Not Coming
Ecosystems are resistant or resilient to hurricanes, but not both
Using the LTERHub Directory API to Perform Site Tasks
Ready-to-teach R Environmental Datasets: the lterdatasampler R package
2021-22 LTER Webinar Series: See past webinars here!
LTER Grad Students: Apply Now for Science Writing Opportunity
Expanding the “bio” in biogeochemical modeling: including voles in arctic climate models
Stream Dissolved Nitrogen Cycling Responds to Human Activity across the Landscape
Upcoming Panel Discussion on Community Engagement