Spatial-Temporal Characteristics of Phytoplanktons and the Relationship with Environmental Factors in the Gonghu Bay

doi:10.3969/j.issn.1673-1689.2016.04.011

Home > Archive>Volume 35, Issue 4, 2016 >399-407. DOI:10.3969/j.issn.1673-1689.2016.04.011

Spatial-Temporal Characteristics of Phytoplanktons and the Relationship with Environmental Factors in the Gonghu Bay
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                        10.3969/j.issn.1673-1689.2016.04.011
                    
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Abstract:

The spatial-temporal characteristics of phytoplanktons and its relationship with environmental factors were studied to understand the ecological environment characteristics，using multivariate statistical analysis based on the monitoring data recorded from March 2013 to February 2014 in the Gonghu Bay. Gonghu Bay was generally in a eutrophic state; however，the nearby sampling sites were in a relative better condition. The significant spatial-temporal characteristics was observed for the transparency，suspended substance，chlorophyll a，nitrite and the total nitrogen during cyanobacteria bloom (ANOVA，p＜0.05). A comparatively high spatial heterogeneity was indicated in the phytoplankton community composition (ANOVA，p＜0.05 ). The maximum cell density was found in the 2nd sampling site，while the minimum in the 5th sampling site. Pearson correlation analysis was performed to illustrate the relationship between algae density and environmental variables. Significant positive correlations were found between algae density and the total nitrogen，total phosphorus，permanganate index，suspended substance，and chlorophyll a. But the correlations between algae density and dissolved oxygen were highly negative. Relationship between phytoplankton community composition and environmental factors were analyzed by redundancy analysis (RDA). The results indicated that nutrients (i.e.，the total nitrogen，total phosphorus and ammonia nitrogen)，permanganate index，water temperature，suspended substance，and pH made a major contribution to the composition of phytoplankton community. There was a remarkable spatial heterogeneity of ecological environmental in Gonghu Bay. The phytoplankton community composition was substantially and cooperatively affected by the environmental characteristics and adjacent sampling sites.

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WANG Zhen, ZOU Hua, YANG Guijun, XU Huiping. Spatial-Temporal Characteristics of Phytoplanktons and the Relationship with Environmental Factors in the Gonghu Bay[J]. Journal of Food Science and Biotechnology,2016,35(4):399-407.

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