Field Notes
<--2007-03-22 00:00:00 | 2007-03-26 00:00:00-->Other sites visited today: Sherman Island
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Sherman Island: 2007-03-22 09:00:00 (DOY 81)
Author: Dennis Baldocchi
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Summary: Methane system was set up. Soil probes, soil heat flux plates, and druck water table sensor installed. Pickleweed found on site.
| March 22, 2007 Started setting up Methane system. Installed 3 soil temperature probes. Two were with 2, 4, 8, 16, 32 and 50 cm and one probe with 2, 4, 8, 16, 32 cm Installed 3 soil heat flux plates, at 1 cm Installed Druck water table sensor. The sensor is 75 cm below the ground level. So this is the reference for determining depth of water table Water Table= 75 cm- depth of water above probe. Installed temperature and R/H at 2.60 m Installed solar panel. Data logger is starting to log these sensors. Yit et al started chamber methane measurements. Walt says weeds in the field are pickle weed. Pickleweed Pickleweed, Salicornia virginica is a halophylic (salt loving) plant. It is found in the plant family called Chenopodiaceae, like the the iodine bush and many other halophyte species. Pickleweed dominates the San Pablo and Suisun Bay marshes Pickleweed Pickleweed (Salicornia spp.) is a small succulent, with leaves that are waxy on the outside and full of moisture on the inside. Its leaves are long, thin, and round, like little fingers. Pickleweed flowers between April and September, but its tiny yellow flowers can only be seen upon careful examination. Pickleweed grows in the low- to middle-tide zone in the marsh, which means that it gets covered up by water some of the time. Pickleweed is a halophyte and is specially adapted to live in salty water. When the roots of the pickleweed plant take up salt water, the plant’s cells filter out the salt. The cells move the salt to the tips of the leaves. As concentration of salt gets higher and higher, the leaves turn red. When the leaves cannot hold any more salt, usually during late fall, they begin to die, and eventually fall off. This process keeps the roots and stems of the plant salt-free, and allows the plant to grow new leaves during the next season. |
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7 sets found
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