This was the second interim year for the multi-annual Terms of References (ToRs) for the Working Group on Biological Parameters (WGBIOP). ToRs a and b further ex-plored the best practice of achieving quality assured assessments of new and existing biological parameters for both single-and integrated stock assessment. ToRs c, d and f were the generic ToRs for the group handling the reviewing of calibration exercises on biological parameters, their outcomes and recommendations for such actions, including a continuous development of tools for calibrations. Under ToR a, a web meeting was held between WGBIOP and WKIDEA in order to identify potential interfaces between WGBIOP and the Integrated Ecosystem As-sessment (IEA) data end-users. Given the wide range of potential data currently used in the integrated trend analysis in the IEA’s, a prioritised list of data were agreed to be provided to WGBIOP from WKIDEA. WGBIOP will then review the list of wanted data and assess where the group can provide data links to the ICES Data Centre with associated quality statements, and identify the ‘white spots’ for where data currently are missing and provide guidance on how to gather such data where possible. It was decided to use the IEA on the greater North Sea ecoregion as the first case to handle in this new interface. While WGBIOP was scoping out new data in close collaboration with the IEA groups, the existing and applied data were also a key part of WGBIOP. Under ToR b a close link to the benchmark process in ICES was discussed, this year by formulating quali-ty indicators, specifically focusing on statistical indicators, production of guidelines on quality indicators, and at which point these can be inserted in the ICES benchmark process. ToR c evaluated results of calibration of data for stock assessment and drafted resolu-tions for workshops and exchanges to be approved for 2017 and onwards where ap-propriate. ToR d reviewed the current recommendation system in ICES and drafted a suggestion for a more operational approach to be discussed. On a more technical aspect, ToR e this year outlined a suggestion for the implementation in ICES of a web-based calibration tool.