Questions? Is a particular nutrient limiting its growth numbers? Is something else limiting its growth or numbers? Does it reproduce in this site and if so how? Is it absent from parts of the site due to some factor? How and when do the young disperse? 。 What causes the death of the organisms? Questions? Questions? • Is a particular nutrient limiting its growth numbers? • Is something else limiting its growth or numbers? Does it reproduce in this site and if so how? • Is it absent from parts of the site due to some factor? • How and when do the young disperse? • What causes the death of the organisms?