A great many thanks to all who have submitted session proposals for SIL100, the Centennial Conference of the International Society of Limnology. We are excited about the large response to the call.

The deadline was 8 December 2021 at 23:59 H in Berlin (22:59 UTC).

Standard sessions are to run 1.5 hours and to include six presentations. Session conveners are expected to attend the conference in person. However, since SIL100 will be a hybrid meeting, mixed sessions of in-person and online presentations will be possible. Details on the hybrid format will be communicated at a later stage.

In the unexpected case that an in-person meeting is not possible, the conference will be held entirely online. In the event that the conference can take place at the venue as planned but session conveners are unable to attend in person for good reasons (e.g. COVID-19-related travel restrictions), a replacement chairperson on site may be solicited to moderate the session in lieu of the conveners.

Proposals will be reviewed by the Scientific Committee. Assessment criteria include expected scientific strength, novelty, general appeal, and structure. Proposals may be declined or prospective conveners asked to merge sessions should topics overlap.

Decisions on the acceptance of session proposals will be taken by 12 January 2022.

Cancelling scheduled sessions causes major organizational difficulties. This is why we would highly appreciate your commitment to the proposed sessions. We realize, however, that planning travel in 2022 may continue to be challenging. Therefore, we will do our best to maximize flexibility, particularly by reimbursing on-site conference registration fees if attendance turns out to be impossible.