Workshops are focused on transferring specific knowledge or skills to others, with substantive interaction among participants. Workshops may involve one presenter, a series of lectures or a panel or may involve computer-based training. Workshops are typically scheduled for full or half days. They are usually held before the formal scientific program begins, running concurrently with field trips. Proposals for 11/2 hour workshops taking place during the lunch break during the week may also be submitted. Workshops usually involve a modest fee. Proposals for workshops are invited. Review and placement will be made by the Program Chairs.