LI-COR Biosciences designs, manufactures, and markets instruments and software for measuring light, photosynthesis, leaf area, and greenhouse gases. Customers deploy our instruments for extended durations in difficult environments spanning the arctic, tropical rainforests, wetlands, swamps, deserts, fields, landfills, and many others.
Our light sensors are available for photosynthetically active radiation (both atmospheric and underwater), solar energy, and illuminance. For photosynthesis, the LI-6800 Portable Photosynthesis System sets a new global standard for gas exchange and fluorescence measurements. For greenhouse gases, LI-COR offers complete Eddy Flux systems with your choice of open or closed path CO2 and H2O analyzers, or an open path CH4 analyzer.
Evapotranspiration (ET) is the combination of evaporation of water from soil and plant surfaces, and transpiration of water through plant tissues. The ET rate changes with water availability in the soil, the plants’ ability to keep up with atmospheric water demands, and the atmosphere’s ability to draw water from plants. Characterizing the ET rate is useful for managing water resources to maximize sustainable growth, and for monitoring agricultural water use.
LI-COR offers complete automated ET stations, including CO2/H2O analyzers, mounting towers, moisture and temperature sensors, and FluxSuite™ Software for monitoring station outputs, to aid water managers throughout the growing season.
Soils contain substantial amounts of carbon, which is continuously exchanged with the atmosphere as it is converted to CO2 by microbes, and replenished through photosynthetic assimilation. Measuring the soil CO2 flux rate is challenging, as the instrument must not adversely affect the variables you are trying to measure.
LI-COR’s patented LI-8100A Automated Soil Gas Flux System is a portable, closed chamber-based system consisting of one or more chambers that temporarily close over the soil surface, and a gas analyzer that measures gas concentrations from the closed chamber. Software computes flux results from the rate of change in gas concentration over time.
When plants are subjected to less than ideal growing conditions, they can become stressed. Stress factors can affect growth, survival and crop yields. Physiological measurements such as photosynthesis on living plants can help determine the optimal conditions for plant growth, the climatic range of different species, and resistance to different stress factors.
LI-COR’s new LI-6800 Portable Photosynthesis System provides an ideal combination of scientific sophistication and ease of use. Unprecedented capabilities for measuring gas exchange and fluorescence are coupled with a large touch screen interface that provides real-time guidance from the instrument, for both experienced and novice users.
Increasing the amount of photosynthetically active radiation (PAR) - light with a wavelength between 400 to 700 nm - increases plant photosynthesis; measuring PAR thus provides a consistent method of predicting plant photosynthetic response. Excessive light, however, can also have harmful effects, and likely triggers algal blooming and coral bleaching events.
LI-COR invented the quantum sensor to measure PAR more than 40 years ago, and offers a complete line of radiation sensors to measure PAR (both underwater and in air) and total solar global radiation, along with compatible portable readout devices, including handheld light meters and dataloggers.
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