Impacts of nutrient enrichment on coral reefs: new perspectives and implications for coastal management and reef survival
Current Opinion in Environmental Sustainability, Volume 7, April 2014, Pages 82-93
Cecilia D’Angelo, Jörg Wiedenmann
This article is in the Creative Commons.
This is a really nice review article that touches on many areas that are important to us as reefers. As a result, it has a GREAT collection of citations that are pretty directly applicable to us and our situation.
A few quotes to whet the appetite – then go read!
We have recently shown that increased nutrient levels might not negatively affect the physiological performance of zooxanthellae as long as all essential nutrients are available at sufficient concentrations to ensure their chemically balanced growth 28. These results could explain why some reefs and the nutritional status and metabolism of their inhabitants do not always show negative responses to eutrophication [29• ; 30•], at least in the absence of temperature and light stress.
We’ve already been making use of this fact….when you’re done reading this article, check out our post: A Nitrate Dosing Calculator For Better Tank Health (And Better Coral Color!)
Another tidbit from the article:
Most recently, however, we could demonstrate that corals exposed to elevated nitrogen levels were more susceptible to bleaching when exposed to heat and light stress [28•]. Interestingly, the detrimental effects observed in these experiments could be attributed to the relative undersupply of phosphorus that resulted from the enhanced demand of the proliferating zooxanthellae population rather than to the elevated nitrogen levels themselves (Figure 1 ; Figure 2).
We’ve been promoting this information (at least here on the blog) for quite a while now.