Indicator
Long-Petaled Lewisia (Lewisia pygmaea longipetala)
Basics
Long-Petaled Lewisia (Lewisia pygmaea longipetala)
Long-Petaled Lewisia
Action
Program
Each Unit (number)
VP18: Maintain a minimum of 2 Lewisia pygmaea longipetala population sites.
The number of population sites that are maintained as suitable habitat for sensitive plant species (as determined by a qualified expert).
This Indicator is reported in the following LT Info areas:
Accomplishments

A population is generally defined as occuring at least 1 km from another population, and a subpopulation is defined as a descrete occurence within 1 km of other subpopulations. This chart shows subpopulation counts for each year there was a survey. The standard is to maintain a minimum of two Lewisia pygmaea longipetala population sites.

Data provided by the U.S. Forest Service.

Name Options
Long-Petaled Lewisia - Lewisia Pygmaea Longipetala
General

Program Long-Petaled Lewisia (Lewisia pygmaea longipetala) Monitoring

Approach

Quantitative monitoring of long-petaled lewisia in the Region began in 2004 when plants were located and counted at 3 population sites (Dick’s Lake, Triangle Lake and Azure Lake) in 6 subpopulation sites. A new subpopulation was discovered near Azure Lake in 2006, and near Triangle Lake in 2009, and new populations were discovered near Jack’s Peak in 2011, and Ralston Peak in 2012, bringing the total number of known populations to 5, with 12 subpopulations. All known subpopulations are censused by LTBMU staff every 5 years at a minimum (typically more frequently), and long-term demographic monitoring occurs every 3 -5 years in permanent plots established at 2 populations. An extensive survey was completed for long-petaled lewisia in 1991 and 2 long-term monitoring plots were installed at Region Peak in the Tahoe National Forest and within the LTBMU at Keith’s Dome above Triangle Lake. Plant populations are visited every 3-5 years (more frequently when data suggests the pop. is decreasi

Partners

Associated Programs data not provided.