CAJ | 학술논문

研究了22℃、16℃两个温境、实验室系统中长刺漫、短腹平直溞、多刺裸腹溞、透明溞4种枝角类对于小球藻及铜绿微囊藻混合藻液的牧食能力及其在恒定光照条件下的净水能力.结果显示:4种枝角类在藻液初始吸光度大于0.160的情况下均可使藻液浓度下降,其摄食速度随藻类生物量增加而增加,当藻类生物量超过饱和值时,摄食速度随之下降.徐州长刺溞牧食及净水能力最强,在底泥背景下滇池短腹平直潘摄食及净水能力有所增强,透明溞摄食净水能力差,多刺裸腹溞在处理后期自身的排泄物会污染水体.
연구료22℃、16℃량개온경、실험실계통중장자만、단복평직소、다자라복소、투명소4충지각류대우소구조급동록미낭조혼합조액적목식능력급기재항정광조조건하적정수능력.결과현시:4충지각류재조액초시흡광도대우0.160적정황하균가사조액농도하강,기섭식속도수조류생물량증가이증가,당조류생물량초과포화치시,섭식속도수지하강.서주장자소목식급정수능력최강,재저니배경하전지단복평직반섭식급정수능력유소증강,투명소섭식정수능력차,다자라복소재처리후기자신적배설물회오염수체.
Outbreak of cyanobacteria blooms,with associated unsightly scum and unpleasant odor,occurs regdarly in the eutmphication lakes.One of useful ways of blooms controlling is biocontrol metbed with filter feeding cladocerans.Four kinds of cladocerans D.longispina,P.aduncus,M.macrocopa and Daphnia mixed algae water of Chlorella sp.and Microcystis Aeruginosa were studied in laboratory experiments under two temperatures The results showed that the cladocerans were capable of ingesting cyanobacteria.With the average DO ofmixture-algae-solution in the range of 0.160～0.800,the water filtering rate of cladocerans rose and its grazing rate dropped with the decrease of the Chlorella sp and Microcystis Aeruginosa.During the experiment,D. longispina showed the most efficient grazing abihty on the mixture algae.The results showed that using cladocerans such as D.longispina to control the eutrophication of algae-bloom-water was feasible.And at the same time it indicated the significant difference between different kinds of cladocerans.So it is necessary to select the most suitable kind of cladoccra in the screening test before.