Nutrient limitation of phytoplankton growth in Georgia nearshore waters
Nutrient limitation of phytoplankton growth in Georgia nearshore waters
复制标题
乔治亚州近岸水域浮游植物生长的营养限制
DOI：
10.2307/1352055
复制
发表时间：
1984
期刊：
影响因子：
--
通讯作者：
J. Yoder
中科院分区：
文献类型：
--
作者：
S. Bishop;Kurt A. Emmanuele;J. Yoder
在格鲁吉亚沿海沃茨进行了营养盐富集实验，以研究海洋浮游植物对溶解有机氮和无机氮的利用。海洋浮游植物的自然种群，富含不同浓度的氯化铵和其他植物营养素，生长在受控的温度和光照条件下，直到人口达到“稳定期”。结果表明：（1）浮游植物受DIN的限制最高可达约1000 μ g/L; 20μM，当另一种营养物质（磷酸盐或硅酸盐）变得有限时，（2）非常少的天然存在的DON直接用于生长，（3）非常少的DON在几天到大约几天的时间内间接用于生长。1周，和（4）微量金属和维生素不显着限制浮游植物的生长。
Nutrient enrichment experiments were conducted to investigate the utilization of dissolved organic and inorganic nitrogen by marine phytoplankton in Georgia coastal waters. Natural populations of marine phytoplankton, enriched with different concentrations of ammonium chloride and other plant nutrients, were grown under controlled temperature and irradiance conditions until the populations reached “stationary phase.” Results showed that (1) phytoplankton are limited by DIN up to ca. 20μM, when another nutrient (phosphate or silicate) becomes limiting, (2) very little naturally-occurring DON is directly utilized for growth, (3) very little DON is indirectly made available for growth over time periods of days to ca. 1 week, and (4) trace metals and vitamins do not significantly limit phytoplankton growth.