SGER: Genetic Diversity of Macrocystis pyrifera Population:Impact of El Nino

在热带太平洋东部的观测表明， Nino/Southern Oscillation（ENSO）事件正在发生。 ENSO 在南加州造成冬季暴风雨的事件 通过物理干扰大量减少成年海带种群， 即使是相对温和的ENSO事件也会产生极端的营养物质， 限制，减少了丰度和生产力的巨大 海带、大囊藻（Macrocystis pyrifera）。 厄尔尼诺/南方涛动对丰度和 巨藻的生产力是有据可查的，但它的影响 巨藻的遗传多样性和种群动态 仍然未知。 该项目将启动最及时的 1992年厄尔尼诺/南方涛动事件对全球气候的影响 南加州巨型海藻种群的多样性 很好 该方法将利用DNA指纹， 限制性片段长度多态性技术 巨藻种群的遗传结构和组成 在ENSO事件之前和ENSO事件后恢复期间。 到 评估关键的后ENSO恢复期，这项研究 （具有极端紧迫性）必须在发病前立即开始 1992年的ENSO事件预测会在今年夏天发生。

Observations in the eastern tropical Pacific indicate that a new El Nino/Southern Oscillation (ENSO) event is now underway. ENSO events that produce stormy winters in Southern California can decimate adult kelp populations through physical disturbance, and even relatively mild ENSO events can produce extreme nutrient limitation that reduce the abundance and productivity of giant kelp, Macrocystis pyrifera. The effects of ENSO on abundances and productivity of the giant kelp are well documented, but its effect on genetic diversity and population dynamics of giant kelp remains unknown. This project will initiate a most timely investigation of the impact of the 1992 ENSO event on genetic diversity of giant kelp populations in the Southern California Bight. The approach will exploit DNA fingerprinting and restriction fragment length polymorphism technologies to address the genetic structure and composition of giant kelp populations prior to the ENSO event and during the post-ENSO recovery. To evaluate the critical post-ENSO recovery period, this research (having extreme urgency) must be initiated now before the onset of the 1992 ENSO event that's predicted for this summer.