1. Objective The problems associated with traditional equipment for sampling shallow drilling sediment cores include high production cost, short sample preservation time, inability to store in a freezer, and poor resi...1. Objective The problems associated with traditional equipment for sampling shallow drilling sediment cores include high production cost, short sample preservation time, inability to store in a freezer, and poor resistance to seawater corrosion (Table 1). We developed a sampler with a new design that overcame these problems. The new design worked well in our study and can efficiently support coastal wetland geological surveys.展开更多
The characteristics of the terrain of a strait can lead to a“fine tube”effect that enhances a monsoon and thereby affects the physical,chemical,and biological processes of marine ecosystems.This effect is a highly d...The characteristics of the terrain of a strait can lead to a“fine tube”effect that enhances a monsoon and thereby affects the physical,chemical,and biological processes of marine ecosystems.This effect is a highly dynamic and complex phenomenon involving interactions among atmospheric,oceanic,and terrestrial systems,as well as biogeochemical cycles and biological responses driven by it.However,current understanding has been focused mainly on the differences between monsoons,and there have been few studies concerned with the weakening or strengthening of monsoons.To explore the biogeochemical and phytoplankton responses during varying intensities of the northeast(NE)monsoon in the Taiwan Strait,high-resolution,across-front observations combined with FerryBox online data and satellite observations were conducted in this study during a strong,moderate,and weak NE monsoon.The spatiotemporal changes of nutrient concentrations and phytoplankton communities were regulated by the dynamics of ocean currents forced by NE winds.The weakening of the NE monsoon caused shrinkage of the coastal currents that led to a reduction of nutrient concentrations and an alteration of the distribution patterns of phytoplankton communities along cross-front sections.Specifically,there was a notable decrease in the proportions of dinoflagellates and cryptophytes in inshore regions and of prasinophytes in offshore areas.This study showed for the first time the dynamics of phytoplankton with changes of ocean currents during varying intensities of the NE monsoon in a strait system.The findings helped to elucidate the general spatial patterns of the phytoplankton community based on satellite-derived surface temperature and wind patterns and further enhanced the understanding of biogeochemical cycles in marine systems.展开更多
基金This equipment has obtained the national invention patent and the patent number is ZL 201520003115.0 (Fig. 3). This study was jointly funded by the Natural Science Foundations of China (41406082,41240022,41706057)National Key R&D Program of China (2016YFE0109600)Governmental Public Research Funds of China (201111023,DD20189503 and GZH201200503).
文摘1. Objective The problems associated with traditional equipment for sampling shallow drilling sediment cores include high production cost, short sample preservation time, inability to store in a freezer, and poor resistance to seawater corrosion (Table 1). We developed a sampler with a new design that overcame these problems. The new design worked well in our study and can efficiently support coastal wetland geological surveys.
基金The National Natural Science Foundation of China under contract Nos 42122044,42206100,and 42141002the Found of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)under contract No.SML2021SP308.
文摘The characteristics of the terrain of a strait can lead to a“fine tube”effect that enhances a monsoon and thereby affects the physical,chemical,and biological processes of marine ecosystems.This effect is a highly dynamic and complex phenomenon involving interactions among atmospheric,oceanic,and terrestrial systems,as well as biogeochemical cycles and biological responses driven by it.However,current understanding has been focused mainly on the differences between monsoons,and there have been few studies concerned with the weakening or strengthening of monsoons.To explore the biogeochemical and phytoplankton responses during varying intensities of the northeast(NE)monsoon in the Taiwan Strait,high-resolution,across-front observations combined with FerryBox online data and satellite observations were conducted in this study during a strong,moderate,and weak NE monsoon.The spatiotemporal changes of nutrient concentrations and phytoplankton communities were regulated by the dynamics of ocean currents forced by NE winds.The weakening of the NE monsoon caused shrinkage of the coastal currents that led to a reduction of nutrient concentrations and an alteration of the distribution patterns of phytoplankton communities along cross-front sections.Specifically,there was a notable decrease in the proportions of dinoflagellates and cryptophytes in inshore regions and of prasinophytes in offshore areas.This study showed for the first time the dynamics of phytoplankton with changes of ocean currents during varying intensities of the NE monsoon in a strait system.The findings helped to elucidate the general spatial patterns of the phytoplankton community based on satellite-derived surface temperature and wind patterns and further enhanced the understanding of biogeochemical cycles in marine systems.
