Tissue Nutrient Content in Ulva spp. (Chlorophyceae) as Bioindicator for Nutrient Loading Along the Coast of East Africa
2009 (English)In: The Open Environmental & Biological Monitoring Journal, ISSN 1875-0400, Vol. 2, 11-17 p.Article in journal (Refereed) Published
Eutrophication is an increasingly occurring problem that causes degradation of coastal ecosystems worldwide.Traditional monitoring of dissolved nutrients in the water column can be complicated by short term fluctuations, especiallywhen levels of nutrients are low and turnover rapid. A proposed alternative method is the use of macroalgal tissuenutrient concentrations for indication of ambient nutrient availability, as they integrate nutrients over time. This studyevaluates the use of macroalgae within the genus Ulva (Chlorophyceae), regarding their ability to reflect nutrient gradientsoff the coast of East Africa (i.e. Kenya and Tanzania). Ulva was able to reflect nitrogen (N) gradients from all three outletsources, with up to 90% higher tissue N levels in vicinity of major cities compared to adjacent areas. Together with resultsfrom nutrient- uptake and fluctuation experiments, this study suggests that macroalgal tissue nutrient content has potentialas a complement to regular water nutrient sampling.
Place, publisher, year, edition, pages
2009. Vol. 2, 11-17 p.
Macroalgae, Eutrophication, Ulva, Nutrients, Monitoring, East Africa
IdentifiersURN: urn:nbn:se:su:diva-45782OAI: oai:DiVA.org:su-45782DiVA: diva2:369735