The Core 3 Synthesis team met again at the Consortium for Ocean Leadership in Washington DC from October 9-11, 2019 to discuss the content and format of the special issue in Frontiers in Marine Science. Specifically, the objective of this workshop was to prepare a high-level quantitative synthesis of longitudinal (time series) information indexing the population and ecosystem trajectories of marine species and ecosystems impacted by the Deepwater Horizon (DWH) accident. The workshop discussed life history and associated scale effects that are implicated in the decline and potential recovery of ecosystem components, including life span, fractions of populations impacted by the spill, population connectivity among potential source populations, and sensitivity of various life stages to oil contaminants. Correlations among time series were reviewed and compared with ecotype specific food webs (e.g., Peterson et al. 2003) to evaluate species interactions potentially affected by the spill. Vulnerability/susceptibility of various impacted resources was discussed. Please find the agenda and attendee list on these hyperlinks.