We are happy to let you know about a new publication from SCOR WG 154 P-OBS (Integration of Plankton-Observing Sensor Systems to Existing Global Sampling Programs; https://scor-int.org/group/154/). In "Recommendations for Plankton Measurements on OceanSITES Moorings With Relevance to Other Observing Sites" the authors provide motivation for augmenting existing time-series sites with biological measurements by presenting relevant science questions, reviewing existing technology, backed up with examples of time-series sites already deploying some of those technologies. Focus is placed on the OceanSITES network for long-term (climate) time series stations in the open ocean and opportunities for coordinating the network's expansion onto more biological measurements. Implementing the recommendations provided in the report would address significant gaps in our capacity to observe several EOVs such as Particulate Matter and Phytoplankton Biomass & Diversity among others, as well as the corresponding ECVs and EBVs.