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End Creek Wetlands
Endangered Species Habitat Enhancement

 

Douglas' Clover -Trifolium douglasii

Douglas' Clover is federally listed as a species of concern.  In Oregon, it is listed by the Oregon Natural Heritage Program on List 1: Threatened or endangered throughout range; and as S1, G3: Critially imperiled in Oregon; Rare, threatened or uncommon throughout its range.

This clover is endemic to wet meadows in the Blue Mountians of NE Oregon, SE Washington and adjacent counties of Idaho.  It is recognized by three-parted leaves with linear leaflets, and by the unique, downward curving calyx teeth.

A large population recently was discovered on the Ladd Marsh Wildlife Refuge at the southern end of the Grande Ronde Valley.  Seed was harvested in June 2007 and will be grown in summer 2008 for introduction on the End Creek wetlands.

We hope to create a viable, localized population of Douglas' Clover at End Creek that is permanently protected from grazing, and other anthropogenic disturbance. 

 




Columbia Spotted Frog -
Rana luteiventris

Columbia Spotted Frogs have been found in ponds at End Creek, but no egg masses were discovered in spring 2007.  The ponds were newly created then, and had little emergent vegetation.  As the ponds mature, we hope that spotted frogs will establish a breeding population on the site.

The biggest threat to successful establishment of a breeding population will be predation from invasive bullfrogs.  Bullfrogs are abundant in nearby irrigation ditches and ponds and will continue to encroach into the restoration area.