Influence of Climate Change on Ichthyoplankton Ecology in the East China Sea and Northwestern

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簡歷

基本資料

Project title

Code/計畫編號

MOST103-2611-M019-009

Translated Name/計畫中文名

全球變遷對西北太平洋臺灣海域海洋生物地球化學與生態系統影響之長期觀測與研究 (I)－子計畫：全球變遷因子對東海及西北太平洋黑潮海域仔稚魚生態之影響

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=8358654

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

31-07-2015

Bugetid/研究經費

1352千元

ResearchField/研究領域

海洋科學

在氣候變遷以不同時間尺度之面向或情境影響全球海洋環境與生態之際，有必要釐清臺灣週邊海域之海洋生物地球化學循環與生態系食物網功能。而臺灣週邊之東海陸棚與西北太平洋黑潮水域為我國重要漁場與海洋生態區之一﹐為許多經濟性魚種如鎖管、白腹鯖及花腹鯖，以及大洋迴游性魚類等集結或必經之場所﹐而了解海域內仔稚魚組成及豐度變化與環境之關係﹐則是研究與串連海洋生態區生地化通量與微生物循環及攝食食物鏈間的環節。而仔稚魚因遊泳能力弱，常隨著海洋環境變動而有大中小尺度時空之生物量及分佈變動特性﹐利用現場 (水平與分層) 採集之種類判識與量測調查，是評估仔稚魚生物量、分布及群集特性之最佳方法。因而，本計畫擬配合總計劃，於東海與黑潮海域(含極端環境-颱風必經之水域)以三年(2012/08~2015/07)時間利用衛星遙測配合現場生物採集與 CTD等儀器觀測，導入生命條碼基因序列(由中研院邵廣昭老師指導)技術與統計分析法，探討在氣候變遷效應下環境(i.e. ENSO現象、黑潮鋒面之推移與極端環境之發生) 變動對東海與西北太平洋黑潮海域週邊水域仔稚魚生態(含群集結構)的影響，以協助總計畫瞭解在不同的海洋系統裡，海洋生物地球化學循環與生態系統兩者互動的差異，作為評估它們的運作受到全球變遷的影響程度。本計畫前 2 年(2012-2013年)已完成國內仔稚魚傳統與分子技術分類之比較(Ko et al., 2013)，以及東部黑潮兩條斷面 17個測站採樣，初步結果顯示黑潮水域 100公尺以淺及以深水層的溫鹽結構並不相同，觀測期間在黑潮域採集到共採集了 2083尾仔稚魚，分屬於 54科 59屬 99類。前五大優勢科別為Myctophidae (28.73%)、Phosichthyidae (18.24%)、Gonostomatidae (14.49%)、 12/18/2013修訂 Bregmacerotidae (8.51%)及 Notosudidae (7.35%)；前五大優勢魚種則分別為 Vinciguerria nimbaria (18.26)、Diaphus A group (12.99%)、Sigmops gracile (10.05%)、Bregmaceros spp. (8.35%)、Scopelosaurus spp. (7.36%)，如比較同一季節(秋季)陸棚及河口域之樣本，則河口域及陸棚域附近水域之優勢物種分別為 Benthosema pterotum、Ophidiidae gen. spp.、Sciaenidae gen. type 4，以及 Benthosema pterotum、Argyrosomus spp.、Ophidiidae gen. spp.等組成。夏秋季魚種群聚則依上述地理空間區位可區分為三群，而強化生命條碼之分析以提升物種辨識能力及其與水文環境變動關係則是本年度的重點工作。 These climate changes index could have profound impacts on the marine phenomena that are important to biology, ecology and dynamic carbon transformation in these waters (i.e. the East China Sea and Kuroshio) around Taiwan. However, a little work can understand the response of marine ecosystem impacted by climate change. In general, ichthyoplankton may be served as the key point of marine dynamics or grazing food chain. The major purpose of this project are established in an investigative work based on biophysical field work, barcode analysis method and satellite data aiming at the assessment of abundance and distribution of larval fish associated with the environment in these two waters. In this 3-year project, we will examine the ichthyoplankton biodiversity, abundance and community in different waters (i.e. coastal water, shelf water, Kuroshio and open ocean), and its seasonal or annual variation associated with the environment (i.e. ENSO, monsoon). Otherwise, the feature (i.e. front map) of satellite derived SST and pigment concentration map were also investigated for the further association to grazing food chain in this study. In the first- two years, one studied survey with 17 biological sampling stations was already investigated using ORI net in the Kuroshio waters. A total of 2083 larval fishes were identified belonging to 99 taxa in 54 families and 59 genera. Vinciguerria nimbaria (18.26)、Diaphus A group (12.99%)、Sigmops gracile (10.05%)、 Bregmaceros spp. (8.35%)、Scopelosaurus spp. (7.36%) were the five most abundant taxa in this survey. The species composition was different to those in the estuary and shelf waters. For the latter two areas, the species compositions were dominated in the species of Benthosema pterotum, Ophidiidae gen. spp. And Sciaenidae gen. type 4, and Benthosema pterotum, Argyrosomus spp. and Ophidiidae gen. spp., respectively. Moreover, three larval fish assemblages were distinguished by station associations and spatial distribution patterns and accordingly designated as estuary, shelf break area, and offshore coast water assemblages.

Keyword(s)

氣候變遷
東海
黑潮
西北太平洋
仔稚魚
群集結構

DSpace CRIS

Influence of Climate Change on Ichthyoplankton Ecology in the East China Sea and Northwestern

基本資料

Description