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Ecological Studies on Fouling Organisms at Yangshan Deep-Water Port

Author: WangBaoQiang
Tutor: XueJunZeng
School: Shanghai Ocean University,
Course: Hydrobiology
Keywords: Yangshan Deepwater Port Fouling organisms Of macrobenthos The white ridges tube barnacle Community structure Ecology
CLC: Q958.8
Type: Master's thesis
Year: 2011
Downloads: 48
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Abstract

Yangshan Deepwater Port is the hub of Shanghai international shipping center in Hong Kong, mainland China, the first building in the island's port. Further construction of the port and the increase of foreign ship has an important influence ecosystem of the waters Yangshan Deepwater Port, at the same time a large number of foreign cargo ship docked Yangshan Port to become attached to the high risk of biological invasion District. This thesis, the annual variation of the Yangshan Port sea water environment, community structure and diversity of the Pier and Harbour fouling organisms, intertidal macrobenthos in community structure and historical changes, White spinal canal barnacles pier ecological environment morphological adaptations of the research, the main conclusions are as follows: (1) in 2009 on the anniversary of the Yangshan Deepwater Port sea water environment factor research. Analysis of variance showed Yangshan Deepwater Port Sea surface water temperature, dissolved oxygen, the pH, salinity, conductivity and suspended solids content there are significant seasonal variation (p <0.01), the water of the monsoon and ocean currents in the sea area of ??Yangshan Deepwater Port has an important role in the environmental change. Correlation analysis showed no significant between the content of suspended solids and salinity, the direct diffusion leakage sediment in the Yangtze Delta Yangshan Harbor Sea sediment concentration and size of the Yangshan Deepwater Port waters sediment concentration mainly depends on waves, tides and currents the local shallows lift Yang and conveying. (2) May 2010 on the the Yangshan Port Terminal defaced biological community structure and diversity of research. Collected a total of 17 kinds of fouling organisms, the textured pattern barnacles and mitral oysters as the dominant species (Y = 0.396, y = 0.250). From the the climax zone to low tide zone, fouling organisms community structure is significantly different: the number of species, density and biomass of the basic upward trend, evenness showed a downward trend, the diversity index was increased and then decreased trend. Regression analysis: the Yangshan Port fouling organisms coverage and diversity index showed a single peak on the arch of the curve, the coverage of to deface the highest biodiversity in the range of 30% -40% coverage and diversity indicators intermediate disturbance hypothesis, the results support the three diversity index of Shannon-Wiener, Margalef and Simpson. (3) from March 2009 to March 2010 in the Yangshan Harbor waters anniversary defaced biological peg board research. Fouling organisms recorded a total of 19 species, belonging to five groups, the dominant species of capuchin oyster (Ostrea cucullata) the textured pattern barnacles (Balanus reliculatus), large room the film hole moss insects (Membranipora grandicella), Xiamen Chinese algae moss the worm (Sinoflustra amoyensis), the double hook Dun amber moss insects (Aspidelectra bihamata), in the embryo spendthrift the hydroids (Tubularia mesembryanthemum), lower my eyes Tau sticks hydroids (Obelia geniculata) and Asia broom caterpillars (Sabellaria ishikawai). Species composition mainly widely distributed species also has some of the characteristics of the estuary low salt species. Yangshan Port fouling organisms attached to the peak period is from June to October, except in the winter months, the rest of the year are biofouling. Salinity, water flow and sediment content, Yangshan Port fouling organisms attached biomass smaller monthly board, quarter panels, and the average annual board attached biomass were 9.20 g of / m ~ 2,127.20 g / m ~ 2 and 774.04 g / m ~~ 2. In addition, on the of Yangshan Port fouling organisms anniversary community development and species succession analysis results show that the Yangshan Port defaced the biomes structure unstable species succession more obvious. (4) from October 2009 to July 2010 Yangshan Port intertidal macrobenthos four quarters of survey research. Collected a total of 61 kinds of macrobenthos, including 22 kinds of mollusks, 16 kinds of annelids, arthropods 12 kinds, five kinds of bryozoans, coelenterates, the esculenta phylum Echinodermata each. The dominant species for short shore snails (Littorina brevicula), multi-tooth Wai Nereis (Perinereis nuntia), Kasama, Japan barnacles (Tetraclita japonica) tooth pattern Tanka snails (Nerita yoldii) and specific power crab (Macromedaeus distinguendus). Yangshan Harbor waters intertidal macrobenthos species widely distributed species, also has some of the characteristics of the estuary low salt species. ABC curve, hierarchical clustering and MDS analysis of community structure of macrobenthos found: the ocean mountain section of the tidal zone between Macrobenthic Communities not yet subject to interference or interference lighter, community structure is relatively stable; and Shenggu reef sectional intertidal macrobenthos in the community by the interference of the moderate decline in community structure stability. Compared with historical data, Shenggu reef of macrobenthos density, biomass and Shannon diversity index were significantly lower, with elevated salinity Yangshan Harbor waters original habitat change and human disturbance strengthen an important relationship. (5) In the summer of 2009, conducted a survey of the relationship between the Yangshan Port wharf piles white ridge tube barnacle morphology parameters and environmental research. The correlation analysis and variance analysis showed that the morphological characteristics of the Yangshan Port Terminal White spinal canal barnacles attached influenced by currents and light intensity. Currents mainly affects the the white spine tube barnacles shell height base length ratio (H / L), with the currents increase of the impact force, the H / L becomes smaller, the form of white spine tube barnacles by steep conical tends to be low-conical ; rather light mainly affects the white ridge tube barnacle shell mouth area volume ratio (Sa / V), Sa / V with the enhancement of light intensity and smaller. Compared to other studies, Yangshan Port Terminal storms smaller and the wharf pier suffered lower light intensity lead the white ridges pipe barnacles H / Sa and Sa / V larger main reason.

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