摘要
在不同的氮源(硝酸钠、氯化铵、尿素)、不同的磷源(磷酸二氢钠、甘油磷酸钠、三磷酸腺苷二钠)和不同的营养盐输入方式(一次性输入、每2d输入、每5d输入)下,对三角褐指藻、小新月菱形藻、杜氏盐藻、青岛大扁藻、米氏凯伦藻和前沟藻进行混合培养实验,研究营养盐形态及输入方式对6种海洋微藻群落演替的影响。实验结果表明,以硝酸钠和氯化铵为氮源时,硅藻为优势种,分别占总细胞密度的56.0%和58.4%,而以尿素为氮源时,绿藻有一定的优势,占总细胞密度的56.5%;以磷酸二氢钠和甘油磷酸钠为磷源时硅藻具有竞争优势,分别占总细胞密度的56.0%和59.6%,但以三磷酸腺苷二钠为磷源时,绿藻为优势种,占总细胞密度的80.0%;不同的营养盐输入方式下,硅藻都能保持一定的竞争优势,一次性输入、每2d输入、每5d输入方式下,硅藻分别占总细胞密度的63.2%、85.6%和60.4%,其中每2d输入方式下,硅藻竞争优势最大。在所有的处理组中,甲藻都受到严重的抑制,只能占有很小的比例。
In this paper, six marine microalgal species（Phaeodactylum tricornutum, Nitzschia closteriumf. minutissima, Dunaliella salina, Platymonas helgolandica var. tsingtaoensi, Karenia mikimotoi andAmphidinium carterae）were mixed cultured under different nitrogen sources （NaNO3, NH4Cl, CO（NH2）2）, different phosphorous sources （NaH2PO4, glycerophosphate, adenosine triphosphate diso-dium） and different nutrient input modes （input one time, input every 2 days, input every 5 days） inorder to study the effects of nutrient sources and input modes on the community succession of six mi-croalgal species. The results showed that when NaNO3 and NH4Cl were nitrogen sources, diatomswere the dominant algae and accounted for 56.0% and 58.4% of the total cell densities, respectively,while green algae had competitive advantage when urea was nitrogen source and accounted for 56.5% ofthe total cell density. When NaH2PO4 and glycerophosphate were phosphorus sources, diatoms werethe competitive species and accounted for 56.0% and 59.6% of the total cell densities, respectively,while green algae were dominants when adenosine triphosphate disodium was phosphorus source, accounting for 80.0% of the total cell density. The diatoms were all dominant in different nutrient inputmodes and accounted for 63.2%, 85.6% and 60.4% of the total cell densities, respectively, when thenutrients were input one time, input every 2 days and input every 5 days, with the highest competitiveness occurred in every 2 days input mode. Dinoflagellates were inhibited and only occupied small percentages of the total cell densities in all treatments.
出处
《海洋湖沼通报》
CSCD
北大核心
2014年第2期23-30,共8页
Transactions of Oceanology and Limnology
基金
国家自然科学基金(40976076)
"十二五"国家科技支撑计划(2011BAD14B01)
关键词
海洋微藻
氮源
磷源
营养盐输入方式
群落演替
marine microalgae
nitrogen sources
phosphorous sources
nutrient input modes
community succession
