In many communities, particularly ones that rely on member participation for policy building and content guidance, growth and development rely on core members being active in a variety of ways (editing, flagging, creating content, providing guidance to new members, participating in policy creation, etc.).
However, I keep seeing situations where users who are clearly heavily invested in the community completely neglect certain key aspects of keeping the community healthy. It seems fairly common for the most active users to focus almost exclusively on content, and sometimes other areas such as voting, flagging, editing, etc. are almost completely ignored.
Is there a way to encourage the core users to participate in these less-glamorous, yet still essential tasks without appearing to nag or harass these valuable members of the community?