Nonprofit and Voluntary Sector Quarterly, Ahead of Print.
Volunteering can be understood as a human-made, renewable resource that can be grown and recycled, and whose continuation and volume of flow can be influenced by human beings positively as well as negatively. We extend the metaphor and break down the monolithic concept into three categories: traditional (wild salmon), third party (farmed fish), and spontaneous (marine zooplankton). Each volunteer resource (a) manifests in particular forms of volunteer service, (b) serves different purposes, (c) has different antecedents, (d) is harvested in different ways by different stakeholders meeting different conditions, and requires a specific form of management, based on its (e) benefits and challenges, (f) resource level, (g) propagation methods, and (h) sustainability needs. The three resources are fluid and interact dynamically. The distinction of three volunteer resources and their dynamics extends the conceptualization of volunteering as a natural resource and informs a new research agenda.