Increasing temperature also affects photosynthesis, ..

Temperature - Samplers measured temperature in the field directly from the stream at the time of sample collection. Temperature is an important parameter as it is the regulator for aquatic communities - all plankton, bug, and fish species have a preferred temperature. Temperature also controls the amount of dissolved oxygen present in the water - cooler temperature waters hold more dissolved oxygen. Finally, temperature controls the rate at which chemical reactions occur, such as the conversion of nitrate-nitrogen to ammonia-nitrogen. Higher temperatures are shown in red. Several factors affect temperature including riparian buffers or shading, watershed inputs, and surrounding land uses. Compared to Fall 2014, the water temperature in the northern portion of the water shed was several degrees warmer, which could be related to this later part of summer being hot and dry.

Additionally, the amount of photosynthesis occurring in the stream can affect pH levels.

Leaf photosynthesis was measured using the LI-6200 portablephotosynthesis system (LI-COR, Lincoln, Nebraska 68504, USA) on attachedleaves in the field between 10:00 a.m. and 2:00 p.m. (Beijing time) on sunnydays. Air temperature (Ta), leaf temperature (Tf), relative humidity (Rh), netphotosynthesis (Pn), stomatal conductance (Gs), intercellular CO2concentration (Ci), stomatal resistance (Rs), and stomatal conductance (Cs)were measured or calculated. Leaf gas exchange readings were taken byquadrants (i.e., readings were taken from the eastern, southern, western, andnorthern quadrants of each tree) to minimize any potential environmentalimpacts.


Plan for an experiment - How does temperature affect …

In the first project you will research the effect of Light, Carbon Dioxide, Water and temperature on the rate of photosynthesis.

pH - Samplers measured pH from water samples at the staging location. Water pH is a measure of the amount of hydrogen ion available in the water. Water pH determines the solubility and biological availability of chemicals, including nutrients such as nitrogen and phosphorus, and metals, like copper or lead. Typical pH levels in streams measure between 6.5 and 8.5. pH levels are indicative of the geological materials in the drainage area. Additionally, the amount of photosynthesis occurring in the stream can affect pH levels. Higher pH levels are shown in red, while lower pH levels are displayed in yellow (which were not present in our watershed this sampling season). pH levels below 6 are of concern for biotic communities. Further observation is necessary in those tributaries where low pH levels were measured.


How Does Light Affect The Rate Of Photosynthesis

pH - Samplers measured pH from water samples at the staging location. Water pH is a measure of the amount of hydrogen ion available in the water. Water pH determines the solubility and biological availability of chemicals, including nutrients such as nitrogen and phosphorus, and metals, like copper or lead. Typical pH levels in streams measure between 6.5 and 8.5. pH levels are indicative of the geological materials in the drainage area. Additionally, the amount of photosynthesis occurring in the stream can affect pH levels. Higher pH levels are shown in red, while lower pH levels are displayed in blue. pH levels below 6 are of concern for biotic communities.

Essays: Over 180,000 How Does Light Affect The Rate Of Photosynthesis

Temperature - Samplers measured temperature in the field directly from the stream at the time of sample collection. Temperature is an important parameter as it is the regulator for aquatic communities - all plankton, bug, and fish species have a preferred temperature. Temperature also controls the amount of dissolved oxygen present in the water - cooler temperature waters hold more dissolved oxygen. Finally, temperature controls the rate at which chemical reactions occur, such as the conversion of nitrate-nitrogen to ammonia-nitrogen. Higher temperatures are shown in red, while cooler temperatures are shown in blue. Several factors affect temperature including riparian buffers or shading, watershed inputs, and surrounding land uses. Highest temperatures were measured in small, headwater streams.

FREE How does light affect the rate of photosynthesis …

Farmers can use their knowledge of these limiting factors to increase crop growth in greenhouses. They may use artificial light so that photosynthesis can continue beyond daylight hours, or in a higher-than-normal light intensity. The use of paraffin lamps inside a greenhouse increases the rate of photosynthesis because the burning paraffin produces carbon dioxide, and heat too.