近日，從中科院南海海洋所獲悉,，依托該所的熱帶海洋環(huán)境國家重點(diǎn)實(shí)驗(yàn)室研究員唐丹玲帶領(lǐng)團(tuán)隊(duì),，利用多年船測數(shù)據(jù)并借助衛(wèi)星遙感手段，發(fā)現(xiàn)臺(tái)風(fēng)能引起海洋浮游植物藻華,，并揭示其機(jī)理,。相關(guān)成果先后發(fā)表于《地球物理學(xué)研究》、《海洋生態(tài)進(jìn)程》,、《海洋系統(tǒng)雜志》,、《國際遙感雜志》等10多個(gè)國際學(xué)術(shù)期刊上。
臺(tái)風(fēng)是全球最重要的氣象災(zāi)害之一,，對全球海洋生態(tài)系統(tǒng)有著重要影響,。此次科學(xué)家發(fā)現(xiàn)，臺(tái)風(fēng)可引起海洋表層浮游植物藻華,，增加海洋初級生產(chǎn)力,，同時(shí)可引起次表層浮游植物水華，且次表層藻華的持續(xù)時(shí)間比表層水華持續(xù)時(shí)間更長,。
研究還證實(shí),，臺(tái)風(fēng)的強(qiáng)度和移動(dòng)速度、臺(tái)風(fēng)位置,、降雨等都是影響海洋藻華的重要因素,，但臺(tái)風(fēng)引起的海洋上層混合和上升流將底層富含營養(yǎng)鹽的海水輸送至真光層，是導(dǎo)致葉綠素水華出現(xiàn)的主要原因,。臺(tái)風(fēng)的當(dāng)?shù)囟毫魰r(shí)間,、回旋時(shí)間可增強(qiáng)海洋渦旋狀藻華，這為認(rèn)識(shí)臺(tái)風(fēng)對海洋生態(tài)系統(tǒng)的影響提供了新信息,。（生物谷 Bioon.com）
生物谷推薦的英文摘要
Journal of Marine Systems Doi：10.1016/j.jmarsys.2013.04.010
A subsurface chlorophyll a bloom induced by typhoon in the South China Sea
H.J. Ye Y. Sui D.L. Tang, Y.D. Afanasyev
Previous studies showed that typhoons often induce chlorophyll a (Chl-a) blooms in the surface waters. This paper shows that Chl-a blooms can occur not only on the surface but also in the interior just above the thermocline after the passage of a typhoon. We used satellite and cruise survey data to analyze physical and biological characteristics in the South China Sea after the passage of the typhoon Nuri in August 2008. This paper shows that a subsurface (20 to 100 m depth) Chl-a bloom (1.31 ± 0.47 mg m−3) occurred and lasted
for three weeks, stronger and longer than the surface Chl-a bloom (0.48 ± 0.23 mg m−3
). The maximum value of Chl-a of 2.10 mg m−3 was detected at 50 m depth. This value was approximately 4–5 times higher than the background value of 0.48 mg m−3 measured at non blooming areas at the same time and about 7.5 times higher than the mean Chl-a value of 0.28 ± 0.13 mg m−3 measured over the period of five years. The mixed layer depth and the thickness of the Chl-a bloom increased after the typhoon. Our analysis clearly
shows that a subsurface upwelling caused by the passage of the typhoon, transported nutrients to the euphotic zone and supported the Chl-a bloom. These observations provide some insight on the effect of typhoons on marine ecosystems, especially as related to the Integrated Primary Production.
