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Month: September 2017

Studying Invasive Species: the LI-6800 Trial Winner

Studying Invasive Species: the LI-6800 Trial Winner

Invasive species can alter ecosystems and food chains. None are quite like Tamarisk, also known as salt cedar. Tamarisk sucks up a ton of water and deposits salt when it sheds its leaves, making the soil inhospitable to other plants. “There’s not much left when Tamarisk comes to town,” says Randy Long, a PhD student at the University of California, Santa Barbara.

Randy’s doctoral dissertation is studying the local adaption of Tamarisk to environmental gradients, as well as interactions of…

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Software for Fitting Photosynthetic CO2 or Light Response Curves

Software for Fitting Photosynthetic CO2 or Light Response Curves

A frequent question from LI-COR LI-6400XT users is a request for software resources for fitting the Farquhar, von Caemmerer and Berry (FvCB) model of photosynthesis (Farquhar, von Caemmerer & Berry 1980).  There is a wealth of literature on this topic and a variety of methods developed to fit the model.  There are currently no commercial software packages available for this purpose. Several software packages are, however, freely available for fitting the FvCB model of photosynthesis. Some approaches use only gas…

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