The colonization of underwater environments by exotic seaweeds is causing major ecological problems around the world.This project,referred to AMALIA,aims to transform this current ocean threat into an opportunity by a...The colonization of underwater environments by exotic seaweeds is causing major ecological problems around the world.This project,referred to AMALIA,aims to transform this current ocean threat into an opportunity by adding value to the macroalgae present off the northwest of the Iberian Peninsula.To do so and to observe the presence of seaweeds in situ,an ocean modular submersible platform was developed.This platform was designed to be capable of detecting and surveying surges of invasive seaweeds while withstanding sea conditions.Conceptual designs followed by a screening process were performed,taking into consideration criteria such as operational range and modularity.An open-frame lander was considered and further developed using buckling criteria.In parallel,a state-of-the-art monitoring system was created using spectral imaging,allowing for the future creation of a macroalgae identification system.In addition,sensorial systems for characterizing growth conditions were introduced.Laboratory trials were executed to assess the capability of the system,and sea trials are currently being performed.Numerical simulations and laboratory trials indicate that the structure is fully capable of being deployed for shallow-water environments with a state-of-the-art invasive seaweed monitoring system while maintaining a high degree of modularity.展开更多
针对长江南京段生态健康问题,于2019年平水期和丰水期在长江南京段干流的10个断面和21条入江支流进行采样,利用高通量测序的方法研究底质细菌群落的结构组成,构建了底质细菌群落完整性指数(benthic bacteria-index of biological integr...针对长江南京段生态健康问题,于2019年平水期和丰水期在长江南京段干流的10个断面和21条入江支流进行采样,利用高通量测序的方法研究底质细菌群落的结构组成,构建了底质细菌群落完整性指数(benthic bacteria-index of biological integrity,B-IBI)。结果表明:平水期长江南京段的生态健康要优于丰水期,长江干流断面要优于支流断面;TN、NH_(3)-N、NO_(3)^(-)、TOC与B-IBI呈显著负相关,Shannon指数、Margalef指数、Evenness指数与B-IBI呈显著正相关;研究建立的评价体系对于长江水质状况和生境有较好的指示作用;硬质护坡或河底对于入江支流细菌群落的多样性有负面影响,建议在确保防汛的基础上加强河道的生态修复。展开更多
基金supported by the European Union under Grant No. EASME/EMFF/2016/1.2.1.4/03/SI2.750419the AMALIA-Algae-to-Market Lab Ideas Project。
文摘The colonization of underwater environments by exotic seaweeds is causing major ecological problems around the world.This project,referred to AMALIA,aims to transform this current ocean threat into an opportunity by adding value to the macroalgae present off the northwest of the Iberian Peninsula.To do so and to observe the presence of seaweeds in situ,an ocean modular submersible platform was developed.This platform was designed to be capable of detecting and surveying surges of invasive seaweeds while withstanding sea conditions.Conceptual designs followed by a screening process were performed,taking into consideration criteria such as operational range and modularity.An open-frame lander was considered and further developed using buckling criteria.In parallel,a state-of-the-art monitoring system was created using spectral imaging,allowing for the future creation of a macroalgae identification system.In addition,sensorial systems for characterizing growth conditions were introduced.Laboratory trials were executed to assess the capability of the system,and sea trials are currently being performed.Numerical simulations and laboratory trials indicate that the structure is fully capable of being deployed for shallow-water environments with a state-of-the-art invasive seaweed monitoring system while maintaining a high degree of modularity.
文摘针对长江南京段生态健康问题,于2019年平水期和丰水期在长江南京段干流的10个断面和21条入江支流进行采样,利用高通量测序的方法研究底质细菌群落的结构组成,构建了底质细菌群落完整性指数(benthic bacteria-index of biological integrity,B-IBI)。结果表明:平水期长江南京段的生态健康要优于丰水期,长江干流断面要优于支流断面;TN、NH_(3)-N、NO_(3)^(-)、TOC与B-IBI呈显著负相关,Shannon指数、Margalef指数、Evenness指数与B-IBI呈显著正相关;研究建立的评价体系对于长江水质状况和生境有较好的指示作用;硬质护坡或河底对于入江支流细菌群落的多样性有负面影响,建议在确保防汛的基础上加强河道的生态修复。
