Institut National des Sciences et Technologie de la Mer, Port de pêche, La Goulette, Tunis, Tunisia.
Environ Monit Assess. 2010 May;164(1-4):423-33. doi: 10.1007/s10661-009-0903-z. Epub 2009 Apr 30.
Coolia monotis is a potentially toxic epiphytic dinoflagellate widespread along the Mediterranean coasts, where it is frequently detected year round at low concentrations. However, it only proliferates recurrently in some localities. The North Lake of Tunis is one of the affected areas in the southwestern part of the Mediterranean Sea. This site is one of the most productive aquatic Tunisian areas (Recreational Fisheries and shellfish collecting). In the south part of this area of study, recurrent C. monotis proliferation (5 x10(5) cells per liter) took place in late spring and early summer of 2006. During this proliferation, the spatial distribution of C. monotis species, phytoplankton community, and abiotic factors were studied. The composition of the phytoplankton community exhibited a clear dominance of dinoflagellates over other genera. We suggest that proliferation development of C. monotis was linked to climatic conditions, water temperature (r = 0.24, p < 0.05) and high concentrations of nitrogenous nutrients, essentially NH(4)(+) (r = 0.18, p < 0.05) and NO(3)(-) (r = 0.21, p < 0.05).
单宗敦藻是一种具有潜在毒性的附生甲藻，广泛分布在地中海沿岸，全年都能在低浓度下被频繁检测到。然而，它只在一些地方反复繁殖。突尼斯北湖是地中海西南部受影响的地区之一。该地区是突尼斯最具生产力的水产养殖区之一（休闲渔业和贝类捕捞）。在该研究区域的南部，2006 年春末和初夏期间反复出现单宗敦藻的增殖（每升 5x10(5)个细胞）。在这次增殖过程中，研究了单宗敦藻的物种、浮游植物群落和非生物因素的空间分布。浮游植物群落的组成明显以甲藻为主，其他属较少。我们认为，单宗敦藻的增殖发展与气候条件、水温（r = 0.24，p < 0.05）和高浓度的含氮营养物质，特别是 NH(4)(+)（r = 0.18，p < 0.05）和 NO(3)(-)（r = 0.21，p < 0.05）有关。
