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Feller, Ilka C.; McKee, Karen L.; Whigham, Dennis F.; O’Neill, John P.

doi:10.1023/a:1021166010892

Cited by 280 publications

(73 citation statements)

References 117 publications

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“…The outcome of these experiments depend on location, with some mangrove stands shown to be limited by phosphorous (Feller, 1995;Koch and Snedaker, 1997;Feller et al, 2003a;Lovelock et al, 2004Lovelock et al, , 2006) and others to be limited by nitrogen (Feller et al, 2003b;Naidoo, 2009). Prior to the present study, iron limitation in mangrove growth had been reported, on the basis of experimental addition, only in mangroves in north Queensland, Australia (Alongi, 2010).…”

Section: Nutrient Inputs To the Red Seamentioning

confidence: 65%

Nutrient Limitation in Central Red Sea Mangroves

2016

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As coastal plants that can survive in salt water, mangroves play an essential role in large marine ecosystems (LMEs). The Red Sea, where the growth of mangroves is stunted, is one of the least studied LMEs in the world. Mangroves along the Central Red Sea have characteristic heights of ∼2 m, suggesting nutrient limitation. We assessed the nutrient status of mangrove stands in the Central Red Sea and conducted a fertilization experiment (N, P and Fe and various combinations thereof) on 4-week-old seedlings of Avicennia marina to identify limiting nutrients and stoichiometric effects. We measured height, number of leaves, number of nodes and root development at different time periods as well as the leaf content of C, N, P, Fe, and Chl a in the experimental seedlings. Height, number of nodes and number of leaves differed significantly among treatments. Iron treatment resulted in significantly taller plants compared with other nutrients, demonstrating that iron is the primary limiting nutrient in the tested mangrove population and confirming Liebig's law of the minimum: iron addition alone yielded results comparable to those using complete fertilizer. This result is consistent with the biogenic nature of the sediments in the Red Sea, which are dominated by carbonates, and the lack of riverine sources of iron.

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Section: Nutrient Inputs To the Red Seamentioning

confidence: 65%

Nutrient Limitation in Central Red Sea Mangroves

2016

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“…Degradation of terrestrial biotic soil crusts by grazing sheep and drought are likely to have increased dust inputs to the cyanobacterial mats and other habitats of the Exmouth Gulf (McTainish and Strong 2007). Variation in N:P ratio of the cyanobacterial mat indicate that nutrient limitation on the cyanobacterial mat may be heterogeneous, as has been observed in other intertidal ecosystems (McKee et al 2002;Feller et al 2003). Brunskill et al (2001) hypothesized that the N:P ratios of the Gulf salt flat sediments collected close to the Giralia Bay and Eastern Gulf shoreline were closer to the Redfield Ratio (Redfield 1958) than surrounding sediments due to N inputs from the cyanobacterial mats in these areas.…”

Section: Discussionmentioning

confidence: 95%

“…Cyanobacterial communities in hypersaline and arid environments also produce carbohydrates in high concentrations that enable them to withstand desiccation during periods of infrequent tidal inundation and high evaporative demand (Stal 1995;Potts 1999). Carbon, nitrogen and phosphorus availability can be limiting to production in marine ecosystems (Howarth 1988; Anderson and Hesson 1995;Feller et al 2003;Howarth and Marino 2006). Therefore cyanobacterial mats may provide important carbon and nutrient subsidies to adjacent ecosystems, which include mangroves, seagrass beds, coral reefs and shallow water plankton communities, thereby potentially enhancing the productivity and diversity of the receiving ecosystems (Duarte and Cebrian 1996;Polis et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Elemental composition and productivity of cyanobacterial mats in an arid zone estuary in north Western Australia

Lovelock

Grinham

Adame

et al. 2009

Wetlands Ecol Manage

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Extensive cyanobacterial mats are a feature of the high intertidal zone in the Exmouth Gulf, Western Australia. This study provides a description of the position of the mats within the intertidal zone and of the mats elemental composition and productivity. We found that the mats occupied 40 cm elevational range within the intertidal zone. They have a mean organic matter content of 1,600 g m -2 . Mean concentrations of nitrogen (N) were 1.82 g kg -1 and phosphorus (P) 205 mg kg -1 . N:P ratio was 19.7 indicating P limitation, but N:P was variable. Rates of photosynthesis and biomass production were similar to those reported for mats in hypersaline conditions at other sites. When photosynthetic production was scaled-up for the region our data suggest that cyanobacterial mats are an important contributor to the carbon budget in the Exmouth Gulf, contributing between 5 and 15% of the total carbon fixed by primary producers. Additionally mats were observed to be a source of soluble carbohydrates in tidal waters indicating that fixed carbon from high intertidal cyanobacterial mats may enter near shore food webs through this pathway.

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“…Nutrient limitation in mangrove seedlings and trees has generally been studied in terms of nitrogen and phosphorus limitation (Boto and Wellington, 1983;Naidoo, 1987Naidoo, , 2009Feller, 1995;Koch and Snedaker, 1997;Feller et al, 1999Feller et al, , 2003aLovelock et al, 2004Lovelock et al, , 2006Lovelock et al, , 2007Alongi, 2011). Additionally, iron has also been found to be limiting (Alongi, 2010;Almahasheer et al, 2016b), and it has been suggested that the low availability of the three elements may be the reason for mangroves absence in several coastlines otherwise having conditions suitable for mangrove growth (Sato et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Leaf Nutrient Resorption and Export Fluxes of Avicennia marina in the Central Red Sea Area

Almahasheer¹,

Duarte²,

Irigoien³

2018

Front. Mar. Sci.

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Red Sea mangroves occur in an oligotrophic sea without permanent freshwater inputs. Understanding the mechanisms to cope with nutrient limitation is, therefore, important to understand their distribution and nutrient dynamics in coastal ecosystems. We measured total number of meristems to estimate their leaves production and nutrients (N, P, and Fe) as a function of age in Avicennia marina leaves. Then estimated resorption rates; the recovery of nutrients from senescing leaves before they are shed in a total of 91 leaf from four different mangroves stands in the Central Red Sea. We found that the concentration of N and P but not Fe declined with age. Nutrient content also declined in the older leaves with high resorption capacity of 69 and 72% in N and P vs. low resorption of 42% in Fe. The role of Fe resorption is poorly studied in plants, nevertheless, this study could provide an insight into our knowledge of iron resorption in the mangroves, which has never been assessed before. The leaf nutrient export flux from senescing leaves in monospecific stand of Avicennia marina was 9, 0.4 and 1 g m −2 year −1 for N, P, and Fe respectively, suggesting mangrove litter-fall to be an important source of bioavailable iron in particular, due to its low resorption, to the adjacent oligotrophic ecosystem.

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Untitled

Cited by 280 publications

References 117 publications

Nutrient Limitation in Central Red Sea Mangroves

Nutrient Limitation in Central Red Sea Mangroves

Elemental composition and productivity of cyanobacterial mats in an arid zone estuary in north Western Australia

Leaf Nutrient Resorption and Export Fluxes of Avicennia marina in the Central Red Sea Area

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