April 14, 2016
Heidi Aronson and Emily Applewhite will present their Biology Honors projects on Tuesday, April 19th.
April 7, 2016
The Spring 2016 Biology Seminar Series concludes with Dr. Kwasi M. Connor's talk: Omic Approaches to Understanding Life in a Fluctuating Environment.
April 1, 2016
The Spring 2016 Biology Seminar Series continues with Dr. Erin Brinton's talk: Drowning corn: Molecular responses of Zea mays ssp. mays to flooding
April 1, 2016
Come out and see the Biology Seniors present their senior comps projects!
March 25, 2016
The Spring 2016 Biology Seminar Series continues with Dr. Gargi Kulkarni's talk: Bacterial hopanoids and their role in plant symbiosis
Symbiosis means "living together”, i.e. when two organisms live in close association to benefit each other. For instance, soil bacteria called rhizobia, like Bradyrhizobium diazoefficiens, can enter into symbiosis with leguminous plants, like soybean. In this relationship, the plants provide the bacteria with a food source and the bacteria provide the plant with the essential nutrient nitrogen. Our recent research suggests that hopanoids or cholesterol-like lipids produced by rhizobia are required for proper growth of bacteria in both free-living soil and symbiotic plant states. More research into how hopanoids help bacteria to survive may aid in engineering of more robust agricultural strains that are resistant to harsher climates.Read More
March 25, 2016
Participate in the BioBlitz@Oxy event on April 2, 2016
The Bioblitz@Oxy is a citizen science event to document the biodiversity of Occidental College. During this one day event, we will identify as many species as possible on the Occidental College campus. These data will provide baseline knowledge about local biodiversity so we can measure how these species respond to future environmental changes.
To sign up and view more information, please visit the BioBlitz website: http://biodiversity.oxycreates.org/
March 17, 2016
The 2016 Spring Biology Seminar Series continues with Miguel Ordeñana's talk: #NatureinLA: Documenting L.A. Wildlife Using Cameras, Citizen Science, and Social Media
March 11, 2016
The 2016 Spring Biology Seminar Series continues with Dr. Michael Wagner's talk: Nitrification 2.0: The discovery of Comammox bacteria in terrestrial and freshwater habitats
We love to study the hidden world of microbes and are particularly excited to investigate microbes directly in their natural environment. My team is interested in many aspects of the nitrogen cycle. Bioavailable nitrogen is essential for all organisms and is the main limiting nutrient for life on our planet. The process of nitrification — the oxidation of ammonia to nitrate by way of nitrite — links the gain and loss of bioavailable nitrogen and thus plays a central part in the nitrogen cycle. Since the first description of nitrifying microbes more than 100 years ago by Sergei Winogradsky nitrification was thought to be conducted by the joint activity of two groups of microorganisms. We recently discovered that complete nitrifiers exist that can oxidize as single...Read More
February 29, 2016
The 2016 Spring Biology Seminar Series continues with Aaron Aslanian's talk: Proteomic analysis of the DNA damage response
February 25, 2016
Chaparral shrub species of California are known for their ability to survive several environmental stresses, such as recurrent summer drought, periodic wildfire, and winter freezing. For example, many species can re-sprout from the ground after fire, and fire stimulates seed germination for other species. However, there are limits to survival that differ among chaparral shrubs in response to wildfire, depending on whether they re-sprout or re-seed, on their developmental stage, and on possible interactions among other stress factors such as drought and freezing, drought and wildfire, and drought/wildfire/deer browse. Southern California has been facing record drought, with possible profound implications for the chaparral plant community.