Device and application for simultaneously measuring primary productivity of phytoplankton and epiphytic algae in rivers
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A technology of primary productivity and epiphytic algae, applied in the direction of measuring devices, biological testing, material inspection products, etc.
Active Publication Date: 2014-07-30
JINAN UNIVERSITY
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The above two methods are only suitable for the determination of the primary productivity of phytoplankton, and cannot simultaneously complete the measurement of the primary productivity of river phytoplankton and epiphytic algae, nor can they obtain the photosynthesis parameters of algae, so that it is impossible to understand the photosynthesis mechanism of algae
At present, there is no technical report on the simultaneous determination of the primary productivity of phytoplankton and epiphytic algae in rivers
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Embodiment 1
[0034] The sample photoreaction unit described in this embodiment is 5 groups of algae photoreactors (attached figure 1 Group A, B, C, D, E shown in), each group of algae photoreactors includes a planktonic algae photoreactor and an epiphytic algae photoreactor, for example, the group A algae photoreactor includes planktonic algae photoreactor Device 3 and epiphytic algae photoreactor 2. The planktonic algae photoreactor 3 is full of water samples, and the epiphytic algae photoreactor 2 is equipped with a substrate 6 and is full of water samples; in this embodiment, the substrate 6 is a stone with algae attached to the river to be tested (those skilled in the art Other substrates derived from the test river bed or river bank can also be used, and the type of substrate is not limited to the present invention).
[0035] The algae photoreactor is made of plexiglass material and is shaped as a cube with a cover. It includes a box body, a cover plate and a structure to ensure th...
Embodiment 2
[0050] The device of this embodiment is the same as that of Embodiment 1. The device was applied to the determination of primary productivity and photosynthesis parameters of algae in a certain river in Guangzhou.
[0051] Calculation of primary productivity of phytoplankton:
[0055] Photosynthetic-photometric curve equation: P B =P B max tanh (α B E / P B max ), P B =(NP+CR) / B
[0056] The experimentally measured and calculated results are as follows:
[0057] o 1 4.02 mg / L, O 2 4.33 mg / L, O 3 4.26 mg / L, O 4 is 4.17 mg / L, the net primary productivity of phytoplankton algae community NP 0 0.10 mgO2.L -1 .h -1 ; The number of hours T of cultivation is 3h, and the respiration rate of phytoplank...
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Abstract
The invention discloses a device and application for simultaneously measuring primary productivity of phytoplankton and epiphytic algae in rivers. The device comprises a sample photoreaction unit, an environmental simulation unit and a measurement control unit, wherein the sample photoreaction unit refers to multiple groups of algae photoreaction reactors; each group of algae photoreaction reactors comprises at least one phytoplankton photoreactor and at least one epiphytic algae photoreactor; the environmental simulation unit performs environmental simulation on illumination, water temperature and water flow; the illumination environment is that different shading degrees are adopted by different groups of algae photoreactors in the same light source environment; the water temperature and water flow environmental simulation adopts a water flow tank arranged outside the sample photoreaction unit; the water flow tank is provided with a water inlet and a water outlet; the measurement control unit comprises a dissolved oxygen sensor and a control panel; and a dissolved oxygen sensor probe stretches into the algae photoreactor water sample. The device is applied to measuring the primary productivity of the algae in rivers, the operation is simple, the primary productivity and photosynthesis parameters of the phytoplankton and epiphytic algae can be simultaneously obtained, and the experimental efficiency is improved.
Description
technical field [0001] The invention relates to a detection device for primary productivity, more particularly, relates to a device and application for simultaneously measuring the primary productivity of planktonic algae and epiphytic algae in rivers. Background technique [0002] Algae is the main producer in the river ecosystem, generally divided into planktonic algae and benthic algae, its primary productivity is the main source of energy and material for the food web structure, and it is the bait for fish and other aquatic animals. In large rivers, phytoplankton and benthic algae contribute differently to ecosystem primary productivity due to habitat differences. The primary productivity of algae can be expressed by the oxygen production per unit area per unit time, and can also be expressed by the organic carbon production per unit area per unit time. At present, the methods for determining the primary productivity of algae mainly include oxygen measurement and carbon...
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