The Institute for Applied Ecology (IAE) is a 501(c)(3) nonprofit organization with a mission to conserve native species and habitats through restoration, research, and education. Here, we describe some of our projects working with the Conservation Research Program at IAE. The Conservation Research Program conducts research and montioring of native species and ecosystems in order to determine population trends and effective methods for restoration and management, conducts research on invasive species in order to determine effective control methods, and develops plans for the management and restoration of native ecosystems.

Tuesday, September 16, 2014

Frasera umpquaensis (Umpqua green gentian)

Figure 1: Frasera umpquaensis. 
Photo credit: Denise Giles-Johnson.
Our field season is slowly coming to a close as the mercury rises and plants begin to senesce. Luckily, we have managed to get a little relief from the heat as we study Frasera umpquaensis  in the Cascade foothills near Cottage Grove, Oregon. Also known as the Umpqua green gentian, this plant is endemic to northern California and southern Oregon, west of the Cascades. Typically found between 4,500 and 6,500 feet in elevation, F. umpquaensis is a cold-loving species which naturally occurs in areas with relatively long and cold winters.

Frasera umpquaensis
Photo credit: Denise

F. umpquaensis is a long-lived species which has the potential to live up to 80 years! It's longevity makes it susceptible to a lot of environmental change including disturbance periodicity, canopy closure, and changes in forest community composition, as well as short and long term climate cycles. Some of the most common causes of population decline are habitat destruction, genetic isolation, and low recruitment rates. Habitat destruction and alterations have divided this species into small and isolated remnant populations. IAE's research focuses on factors associated with recruitment and survival, such as plant vigor, litter depth, and microclimate temperature.

One of our long-term study sites for F. umpquaensis is Elk Meadows, which is located along the Calapooya divide, near Cottage Grove, Oregon. These meadows are nestled into secondary growth forests comprised of white, Douglas, and grand firs. Research on plants in this area indicates that the populations in north-facing areas, which receive less intense solar radiation and longer snow cover duration, are more successful. Additionally, individuals that were germinated in the greenhouse and were exposed to longer cold treatments were found to be more robust than those that were grown in warmer temperatures. This research shows the direct effect that microclimate temperature has on plant vigor, seedling success and plant recruitment.

Figure 2: Frasera umpquaensis being propagated in the greenhouse.
Photo credit:  Denise Giles-Johnson.
One of the ways that IAE studies the effects of microclimate conditions on plant growth and recruitment is by using a tool called Solar Pathfinder. Commonly used to install solar panels, this instrument estimates the annual solar radiation for a particular location. By aligning the Solar Pathfinder properly and taking a photo directly above the Pathfinder's face, you can estimate the sun's annual path across the horizon as well as average solar radiation per month. The reflection on the Pathfinders face shows the area that will receive direct sunlight (see the red outlined portion of figure 3). The Solar Pathfinder Assistant (a computer program) takes this photo and calculates the area of open canopy, and then extrapolates this information across the entire year using the known solar pathway and radiation intensity for that location's latitude and longitude. 

  Figure 3: Left: Taking an image of the Solar Pathfinders' reflection for later analysis. Right: Tracing open canopy in the image to compute total annual solar radiation. Photo credit: Emma MacDonald

Climate change plays a role in all systems and certainly has an impact on fragile species such as F. umpquaensis. Monitoring changes in survivorship and recruitment will help us to track population trends and determine the best methods for future management to protect populations found in these cooler microclimates as well as promote connectivity to reduce genetic isolation of these populations. 


  1. A worldwide network of parents and professionals who share their concerns can be found within The Apiar Research Institute, or APIARand works to conduct research about autistic disorders and to find new ways to improve.The APIAR is a wealth of information.
    research institute

  2. Thanks for sharing, nice post! Post really provice useful information!

    Giaonhan247 chia sẻ kinh nghiệm mua hàng trên amazon nhật cũng như dịch vụ ship hàng trung quốc giá rẻ và mua hàng trên tiếng việt giá rẻ tốt nhất

  3. Thanks for sharing that good written content on your site.
    khách sạn Hà Tĩnh
    khách sạn Sapa

  4. Hi, I read your post and found it quite interesting. The post you shared is very unique and informative. Thanks for sharing such a useful post. And today I find another great website that provides you all updated game’s cheat and commands, so I highly recommend you please visit then given link ones or go to google and search gtacheatcode.

  5. Thanks for sharing, great post!

    Áo khoác Đà Lạt chuyên sỉ và lẻ áo khoác áo khoác nam với giá ưu đãi nhất 2020. Luôn cập nhật mẫu mới chất lượng và dày ấm nhất kể cả với thời tiết lạnh giá các nước có du học sinh và xuất khẩu lao động. được đồng hành cùng các bạn!!!!

  6. 1xBet korean | korean betting | nvbet betting
    1xBet korean online sportsbook. Sports betting is legal. 바카라 Sports betting is 제왕카지노 legal 1xbet in your country.