Why has the Texas "Brown Tide" Persisted for Over Five Years

德克萨斯州“棕潮”为何持续五年多

• 批准号: 9529750
• 负责人: Edward Buskey
• 金额: $ 37万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-15 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9529750&HistoricalAwards=false
• 关键词: Why; Texas; Brown; Tide; Persisted

9529750 BUSKEY "Brown tides" are persistent blooms of phytoplankton that reduce the penetration of sunlight in the water column. A direct consequence of this phenomenon is a reduction in the growth of seagrass beds which can reduce nursery habitats for fishes and winter food resources for migrating waterfowl. Completion of this research project will provide an understanding of the ecological factors that regulate the initiation and persistence of such harmful algal blooms. Field mesocosm experiments will investigate the effects of nutrient additions on brown tide growth and phytoplankton species composition. Laboratory studies of algal growth rates will explore light, temperature, salinity and allelopathic effects. ***

小行星9529750 “褐潮”是浮游植物的持续大量繁殖，减少了阳光在水柱中的渗透。 这一现象的直接后果是海草床的生长减少，这可能减少鱼类的育苗栖息地和迁徙水鸟的冬季食物资源。 完成这一研究项目将有助于了解调节这种有害藻华的开始和持续的生态因素。 野外围隔实验将调查营养盐添加对褐潮生长和浮游植物物种组成的影响。 藻类生长速率的实验室研究将探索光、温度、盐度和化感作用。 ***