Ms. Di Cao

Ms. Di Cao |Clyto Access

Xiamen University, China

Poster Presentation

Expertise: Evaluation of the spatial and temporal variability of nutrients and their relations with environmental variables, Nitrogen fixation and denitrification in coral reef ecosystems, Particulate organic matter and food web studies (analysis of d13C and d15N)

Biography:

Miss Di cao has graduated in Resource-Environment and City-Countryside Planning Management from Henan University, china in the year 2011. Currently, she is doing her PhD in Environmental Science and Engineering at Xiamen University, China. Her work is mainly focused is on nitrogen migration and transformation in aquatic systemsShe has participated in 4 academic conferences which include the 4th University Consortium on Aquatic Sciences (UCAS), Australian Coral Reef Society Conference, the 7th International Conference on Marine Pollution and Ecotoxicology, Cross-Strait Island Sustainable Development Forum, Oral, Global river nutrient export: past, present, and future. Presently she had 4 publications in reputed journals.

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Presentation:

Title: Human influences on Luhuitou fringing reef: spatial and temporal evidences from isotopic values

Abstract:

Coral reefs have suffered remarkable declines worldwide. Nutrient over-enrichment is considered to be a main local cause. The Luhuitou fringing reef is a famous tourist destination and is undergoing enormous coastal renovation. This study reviews the current nutrient status in seawater and isotopic signatures of POM in a typical fringing reef area in southern China, and try to evaluate possible nutrient sources and the influencing factors. The strong seasonal variations of isotopic signatures coupled with the C/N ratios indicate that hydrodynamic conditions, precipitation as well as human activities have profound implications for corals and the surrounding nutrient concentrations. In dry seasons, there might be more inputs from terrigenous detritus and anthropogenic-derived discharges, whereas in wet seasons, there might be more inputs from marine derived organic matter. Results suggest the existence of anthropogenic influences, thus leading to a high DIN concentration and N/P ratio. Anthropogenic nutrient discharges might moderate the N limitation, whereas P might be more important to the reef ecosystem. In the presence of increasing sever condition caused by climate change, ocean acidification and abnormal SST, as well as natural upwelling and coastal currents, the increasingly frequent human activities could potentially exert overlapping influences on the nutrient supplies in coastal coral reefs. Therefore, efforts should be continuously put into to effectively control the inputs and compositions of human derived nutrients.

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Related Conferences :

Marine Science Research and Technology Conference