oaktree-Paul_Zaretsky-192-540wWhen we talk about stewardship – we are talking about caring for the land and natural resources that we’ve been entrusted with in a responsible way.

The Elkhorn Slough National Estuarine Research Reserve and the Elkhorn Slough Foundation work separately and together within the watershed to protect and restore its habitats and resources. Each organization’s stewardship program is primarily concerned with the properties it owns or manages, but the methods and goals remain the same.

  • Protect intact, native habitats and sensitive species
  • Restore degraded conservation targets
  • Manage habitats that require ongoing manipulation
  • Use restoration science and or adaptive management techniques that allow us to share, scientifically, with other land managers which techniques work, and which do not.
  • Use a historical ecology model to research our local past and guide our management decisions

Restoration Projects

Updates about projects in the watershed. Read more...

Volunteer Events

Join us at an upcoming volunteer stewardship event. See our calendar...

Historical Ecology

Just one tool used by our Stewardship Programs. Read more...

Why do we need stewardship?

California is biologically rich, but many of the state’s natural habitats face threats. California has been designated a biodiversity hotspot, which means that it is a place where exceptional concentrations of endemic (“native to or confined to a certain region”) species are undergoing exceptional losses of habitat. These losses occur in two ways:

Conversion: the change of natural habitat into developed or agricultural areas.

Degradation: losses which involve changes in the structure, function, or composition of an ecosystem. At some level of degradation, an ecosystem ceases to be natural.

Losses have been significant. California native grasslands have been reduced to about one percent of their original extent, both through land conversion and degradation by exotic species invasions. Other seriously threatened ecosystems include wetlands and riparian woodlands, which have been reduced to 10 percent or less of their original area. Many of the animal species dependent on these habitats have declined as well.

Like California, the Elkhorn Slough watershed is rich with diverse habitats and animals. However, the watershed also faces many of the threats. For example, many of the Elkhorn Slough Reserve’s grassland and oak woodland understories are highly invaded by exotic plants; its freshwater springs have been almost entirely lost due to groundwater overdraft; and 75% of its historical salt marshes have been lost through conversion.