| 1 | 粤东柘林湾角毛藻(Chaetoceros)群落生态学特性的季节变化显示文摘于2004年5月至2005年2月对粤东大规模养殖区柘林湾的角毛藻(Chaetoceros)群落的时空分布进行了季节性调查。调查期间,共发现角毛藻54种(含变种、变型),包括3个未知角毛藻种,其中柔弱角毛藻(C.debilis),双孢角毛藻(C.didymusvar.didymus),劳氏角毛藻(C.lorenzianus),小角毛藻(C.minutissimus)和聚生角毛藻(Chaetoceros socialis)均为柘林湾全年出现种。柘林湾角毛藻种类丰富度和细胞丰度的季节变化均呈现高温季节高低温季节低的特点,而平面分布均表现出由湾内向湾外递增的趋势。整体而言,是一个角毛藻种类数很高而细胞丰度较低的海湾。分析表明,水温是影响角毛藻种类丰富度和细胞丰度季节变化的关键因素,而光照、种间竞争和浮游动物群落结构的组成是影响其时空分布的主要因素。 | 王超 黄长江 杜虹 | 2008 | 生态学报2008，28，1： | 8 |
| 2 | Water,organic matter,nitrogen and phosphorus contents in sediment of a large-scale mariculture area in the Zhelin Bay of eastern Guangdong Province,China显示文摘The Zhelin Bay is one of the most important bays for large-scale mariculture in Guangdong Province, China. Owing to the increasing human population and the expanding mariculture in the last two decades, the ecological environment has greatly changed with frequent harmful algal blooms. A monthly survey of water content, organic matter (TOM), and various forms of nitrogen and phosphorous in sediment from July 2002 to July 2003 in the bay was conducted. The results showed that the water content was correlated significantly with TOM and various forms of nitrogen and phosphorus and can be used as proxy for quick and rough estimate of these factors in the future surveys. TOM was also correlated significantly with various forms of nitrogen and phosphorus, indicating that it was one of the key factors affecting the concentrations and distributions of nitrogen and phosphorus in the investigated waters. Average total Kjeldhal nitrogen (TkN) content was(1 113.1±382.5)μg/g and average total phosphorus (TP) content was(567.2±223.3)μg/g, and both were much higher than those of similar estuaries in China and elsewhere. Average nitrogen and phosphorus tended to be higher inside than outside the bay, higher at aquaculture than non-aquaculture areas, and higher at fish-cage culture than oyster culture areas, suggesting that large-scale mariculture inside the bay played an important role in the eutrophication of the Zhelin Bay. Various forms of nitrogen and phosphorus concentrations were higher during the warm season (July—September), which was due to the increased decomposition and concentration of organic matter resulted from the fast growth and high mortality of the cultured species. Compared with July 2002, TkN and TP contents were much higher in July 2003, in consonance with the eutrophication of the Zhelin Bay. Because exchangeable phosphorus (Ex-P), iron-bounded phosphorus (Fe-P) and organic phosphorus (OP) combined accounted for 34.3% of the TP and authigenic phosphorus (Au-P) accounted for 49.2% of the TP, biological phosphorus (BP) that includes Ex-P, Fe-P, OP, and a portion of Au-P, thus accounted for 34.3% to 83.5% of the TP in the Zhelin Bay, which was within the percentage range, but with a high absolute value among the estuaries. Au-P was the most important species of phosphorus and accounted for 49.2% of the TP during the investigation. Since eutrophication in the water column can lead to reduction of pH in sediment and release of phosphorus in Au-P combined with authigenic spodiosite and calcium carbonate, high content of Au-P in the sediment maybe act as a time bomb that can trigger a vicious cycle of eutrophication and large-scale harmful algal bloom in the Zhelin Bay. | DONG Qiaoxiang LIN Junda SHANG Xu LI Jin HUANG Changjiang | 2008 | Acta Oceanologica Sinica2008，27，2： | 5 |
| 3 | 粤东柘林湾根管藻(Rhizosolenia)群落组成的季节特征显示文摘于2004年5月至2005年2月对粤东大规模养殖区柘林湾的根管藻(Rhizosolenia)种群的时空分布进行了季节性调查。调查期间,共发现根管藻16种(含变种、变型),其中柔弱根管藻(R.delicatula),脆根管藻(R.fragilissima),刚毛根管藻(R.setigera)和笔尖根管藻粗径变种(R.styliformisvar.latissima)均为全年出现种。柘林湾根管藻种类丰富度和群落密度的季节变化均呈现高温季节高低温季节低的特点,而平面分布均表现出由湾内向湾外递增的趋势。整体而言,柘林湾是一个根管藻种类数很高而群落密度处于中等水平的海湾。分析表明,水温是影响柘林湾根管藻种类丰富度和群落密度季节变化的关键因素,而光照、种间竞争和浮游动物群落结构的组成是影响其时空分布的主要因素。 | 王超 黄长江 杜虹 | 2008 | 生态学报2008，28，2： | 2 |
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