Effects of Environmental Changes on Ichthyoplankton Community in the East China Sea

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簡歷

基本資料

Project title

Code/計畫編號

NSC98-2611-M019-008

Translated Name/計畫中文名

東海長期觀測與研究(IV)---子計畫---仔稚魚群集結構與環境變遷之關係及台灣東北部湧昇水域之生物量分布變動的聲波探測分析

Project Coordinator/計畫主持人

Ming-An Lee

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

呂學榮

Department/Unit

Department of Environmental Biology and Fisheries Science

Website

https://www.grb.gov.tw/search/planDetail?id=1886829

Year

2009

Start date/計畫起

01-08-2009

Expected Completion/計畫迄

31-07-2010

Co-Investigator(s)

Hsueh-Jung Lu

Bugetid/研究經費

1560千元

ResearchField/研究領域

生物科學
海洋科學

"東海為亞洲三大邊緣海之ㄧ，為我國傳統重要漁場之ㄧ。本海域在黑潮與大陸沿岸冷水團兩種不同性質水團之勢力消長及相互推移下﹐造成海洋環境之溫度､鹽度､營養鹽等生物地化通量的變化﹐這些特性可以透過衛星遙測資訊作廣視之解明﹐作為海洋生態動力特性與海洋理化通量資訊比對之訊息。又在海洋變動之同時﹐仔稚魚生物量及分佈亦隨之有大中小尺度之時空間變動﹐故如能配合現場 (水平與分層) 採集之種類判識與量測調查，應是評估仔稚魚生物量、分布及群集特性之最佳利器。因而，本計畫擬配合總計劃，於東海海域以三年 (2009/08~2012/07)時間利用光波遙測配合現場生物採集與CTD 等儀器觀測，解明長江水豐水與枯水(東北季風前後)期間之仔稚魚種類組成、發育階段、時空分布及結構特性，及由現場量測之海洋理化特性、衛星遙測資訊與統計分析，判析仔稚魚種類、生物量、分布、群集特性與環境變遷間的關係，協助了解河川流量及物質輸出通量的改變對東海海洋生物地球化學循環與生態系食物網功能以及生物資源的影響，及東海海洋生物地球化學環流數值模式與海洋生態系食物網模式的建立。此外，研究中亦透過分層(音響散漫層之上中下層)採集法及不同網目(200, 330, 500, 1000μm)網具效率評估等方法，掌握不同環境、日夜變化與採樣方法之群集結構的差異，並提供總計畫建構東海海洋生物地球化學循環與生態系食物網特性的基礎資料，以持續培育仔稚魚判釋及光波遙測人才。""The East China Sea was one of the important fishing grounds in the offshore sea of Taiwan. As the Coastal waters of Mainland and Taiwan strait warm water meet with the Kuroshio in this area, these changes of physical, chemical and biological oceanography could have profound impacts on the marine phenomena that are important to biology, ecology and dynamic carbon transformation here. In addition, this river discharge of Yang-zi River may play an important role in primary production due to the nutrient-rich fresh water to this area, subsequently enhancing larvae and fishery production. However, the Dam of Yang-zi River will operate since 2009, and then affect the regulation of the discharge. Right now, no one can understand the impact to marine ecosystem. Generally, zooplankton and larval fish may be served as the key point of marine dynamics or grazing food chain. Studying and monitoring on the interaction of environmental factors and the concentration of zooplankton, larval fish and species composition may provide data for the predicted ability of fishery oceanography and carbon dynamic. In 1994 GLOBEC suggested biological sampling techniques were used to evaluate the size and aggregation structure of plankton, while the remotely sensed data conducted from the satellite system, have expanded widely on the relationship of abundance and environmental variables over the last decade. The major purpose of this project are established in an investigative work based on biological and satellite data aiming at the assessment of abundance and distribution of larval fish associated with the environment in the East China Sea. By following of this project, we will examine the ichthyoplankton biodiversity, abundance and community in different waters (i.e. coastal water, shelf water, upwelling are and Kuroshio), and its seasonal or annual variation associated with the environment (i.e. monsoon). Otherwise, the fishing efficiency of different mesh size, diel variation and habitat depth were also investigated for the further understanding to grazing food chain and biogeochemical flux model associated with the environment in this study."

Keyword(s)

東海
黑潮
仔稚魚
群集結構
遙感探測

DSpace CRIS

Effects of Environmental Changes on Ichthyoplankton Community in the East China Sea

基本資料

Description