Studies on the Ichthyoplankton Community Structure Associated with the Hydrographic Condition in the Continental Shelf, Ne Taiwan

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Project title

Code/計畫編號

NSC97-2313-B019-004-MY3

Translated Name/計畫中文名

台灣東北部陸棚區附近水域仔稚魚群集結構與海況變動特性

Project Coordinator/計畫主持人

Ming-An Lee

Funding Organization/主管機關

National Science and Technology Center for Disaster Reduction

Department/Unit

Department of Environmental Biology and Fisheries Science

Website

https://www.grb.gov.tw/search/planDetail?id=1994074

Year

2010

Start date/計畫起

01-08-2010

Expected Completion/計畫迄

31-07-2011

Bugetid/研究經費

1165千元

ResearchField/研究領域

海洋科學

東北部海域陸棚邊緣為本省重要漁場之一。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﹐將造成黑潮流軸的變動及溫度､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﹐而如何迅速擷取仔稚魚生時(real time)資訊，以配合海洋理化特性之解明是極其重要的。因而，本計畫擬以三年時間分別解析東北部海域陸棚邊緣之宜蘭灣、湧昇與黑潮周邊水域仔稚魚生物量之變動與分布結構及日週變動特性，及由現場量測之海洋理化特性與衛星之廣視遙測資訊，判析仔稚魚生物量、分布與環境因子間的關係。第一年擬於不同季節在宜蘭灣至東北部湧昇水域間設定4~6 條測線，並利用多層式(5~6 層)生物採集網進行仔稚魚生物採集，配合群集分析法進一步了解仔稚魚生物量、(水平與垂直)分布與環境因子間的關係；第二~三年，則視第一年調查結果作適度的調整，並選定適當測站加強觀測季風交替期間之仔稚魚群集或水平、定點日週垂直分布(含SSL 內之細微垂直分層採集)及聲波探測的特性。 The East China Sea is well known as one of the high productive aquatic system in Taiwan. According to the possible effects of Kuroshio and Coastal waters of Mainland, these changes of physical, chemical and fishery oceanography could have profound impacts on the marine phenomena that are important to biology, ecology and dynamic carbon transformation in this sea. Generally, 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 larval fish and species composition may provide data for the predicted ability of fishery oceanography and carbon dynamic. In 1994 GLOBEC suggested acoustic techniques were used to evaluate the size and aggregation structure of plankton, while the remotely sensed data conducted from the satellite and acoustic 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 acoustic surveys aiming at the assessment of abundance, community structure and horizontal and vertical distribution of larval fish in the continental shelf, NE Taiwan. In addition, a pilot study was conducted by MTD net from surface to 250 m depth in the I-lan bay on 30-31 July 2007. A total of 591 larval fishes was collected and assigned to at least 13 families and 57 taxa. The dominant species was Benthosama pterotum(40.95%), Myctophidae Diaphus B(12.18%), Callionymidae(8.46%) and Gobiidae(6.60%), respectively. Thus, we were tried to use the MTD and ORI net for investigating the characteristics and species composition associated with the environment in the continental shelf off the I-Lan bay and upwelling area in the first year. For the further understanding the diurnal vertical distribution and net fishing efficiency of ichthyoplankton in this water, micro-multilayer depth sampler with acoustic analysis were also considered in next two year.

Keyword(s)

仔稚魚
群集結構
音響散射層
ichthyoplankton
community structure
sound scattering layer
continental shelf

DSpace CRIS

Studies on the Ichthyoplankton Community Structure Associated with the Hydrographic Condition in the Continental Shelf, Ne Taiwan

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