Plant phenology, the timing of plant biological events, affects the ecological community from microbe to megafauna. An understanding of plant phenology is essential for effective restoration and management. We collect species level phenology to explore patterns of phenology and the role it plays in a landscape where non-native species threaten the integrity of ecosystem function. Weekly from March to November we document plant phenological stages of emergent, budding, flowering, fruiting, mature seed, senescent, and fall growth for species at 30 phenology sites across the property. Preliminary results of this long term monitoring project confirm native and non-native species have disparate phenological patterns. To see the 2013 Phenology Report click here. To see Rebecca Durham's presentation on COMPARATIVE PHENOLOGY OF WESTERN RANGELAND PLANTS click here.
Plants live in tight association with microbes, especially belowground where fungi and bacteria live on and inside the roots of plants. The relationship can be beneficial or harmful to the plant. Some microbes cause plant diseases by decomposing roots. Others trade nutrients with the roots in return for sugars produced aboveground by leaves.
We investigate two main aspects of the relationship between plants and microbes in the soil. First, as it pertains to weeds, we want to know if soil microbes can help or hinder plant invasions. Three highly invasive weeds of contrasting life history strategies; cheatgrass, knapweed and leafy spurge, co-occur with remnants of native plant vegetation. This creates a unique opportunity to observe, characterize, and manipulate interactions between plants and belowground microbial communities. We outline a number of short, intermediate and long-term research projects that will significantly enhance our knowledge regarding plant microbe interactions and soil processes, with the overall goal to better understand, predict and counteract plant invasions, and to restore and manage invaded ecosystems.
Second, we seek to understand how the relationship between plants and soil influences the function of ecosystem processes. Soil microbes are responsible for organic matter decomposition and nutrient cycling between the atmosphere and the land. On this project we collaborate with the Earth Microbiome Project (EMP). The goal is to map and understand the diversity of microorganisms in habitats around the world. We mapped microbial diversity and function across gradients of weed invasions.
Rebecca Durham's Phenology Field Note reveals facts about mock orange, gumweed, and poison ivy.
10-14-13 The Unlucky Ponderosa
11-15-13 Plant Field Note