Influence of outbreak of macroalgal blooms on phosphorus release from the sediments in Swan Lake Wetland, China
Influence of outbreak of macroalgal blooms on phosphorus release from the sediments in Swan Lake Wetland, China
复制标题
天鹅湖湿地大型藻华爆发对沉积物磷释放的影响
DOI：
10.1080/11263504.2013.852633
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发表时间：
2013-10
期刊：
影响因子：
2
通讯作者：
Shao Hongbo
中科院分区：
文献类型：
--
作者：
Gao Li;Wei Quan;Fu Feng;Shao Hongbo
近几十年来，大型藻类水华在全球范围内频繁发生在沿海地区，极大地改变了水体和沉积物中的磷循环。中国滨海湿地荣成天鹅湖湿地正在遭受大规模的大型藻类水华。为了验证大型藻类生长对底泥磷释放的影响，对底泥和丝状毛藻进行了研究。在实验室中培养，以调查水质参数、上覆水中磷水平和沉积物在生长期的变化。此外，还测定了藻类生物量和组织磷浓度。总体而言，高磷处理的毛藻生物量远高于低磷处理。与藻类+低磷水处理相比，添加底泥提高了藻类的生长速度和磷的积累量。在藻类生长过程中，水体pH值显著升高，与高磷处理藻类生物量呈显著正相关(P<；0.05)。沉积物中的P组分表明，Fe/Al-P和有机磷浓度在藻类生长过程中呈下降趋势，藻类+低磷水+底泥处理的变化较大。总体而言，当水体磷含量较低时，沉积物可以为毛藻的生长提供磷，其机制可能是毛藻密集水华导致高pH条件下Fe/Al-P的释放。
Macroalgal blooms have occurred worldwide frequently in coastal areas in recent decades, which dramatically modify phosphorus (P) cycle in water column and the sediments. Rongcheng Swan Lake Wetland, a coastal wetland in China, is suffering from extensive macroalgal blooms. In order to verify the influence of macroalgal growth on sediment P release, the sediments and filamentous Chaetomorpha spp. were incubated in the laboratory to investigate the changes of water quality parameters, P levels in overlying water, and sediments during the growth period. In addition, algal biomass and tissue P concentration were determined. In general, Chaetomorpha biomasses were much higher in high P treatments than in low P treatments. Compared with algae+low P water treatment, the addition of sediments increased the algal growth rate and P accumulation amount. During the algal growth, water pH increased greatly, which showed significant correlation with algal biomass in treatments with high P (P < 0.05). P fractions in the sediments showed that Fe/Al–P and organic P concentrations declined during the algal growth, and great changes were observed in algae+low P water+sediment treatment for both. As a whole, the sediments can supply P for Chaetomorpha growth when water P level was low, and the probable mechanism was the release of Fe/Al–P at high pH condition induced by intensive Chaetomorpha blooms.
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影响因子：
5.8
作者：
E. García-Robledo;A. Corzo
通讯作者：
E. García-Robledo;A. Corzo
影响因子：
2
作者：
Pulina, S.;Padedda, B. M.;Luglie, A.
通讯作者：
Luglie, A.
DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
R. Villares;X. Puente;A. Carballeira
通讯作者：
R. Villares;X. Puente;A. Carballeira
影响因子：
1.4
作者：
Menéndez, M;Herrera, J;Comín, FA
通讯作者：
Comín, FA
影响因子：
2
作者：
Minggagud, Hugjiltu;Yang, Jie
通讯作者：
Yang, Jie