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Latitudinal Patterns in European Seagrass Carbon Reserves: Influence of Seasonal Fluctuations versus Short-Term Stress and Disturbance Events ArchiMer
Soissons, Laura M.; Haanstra, Eeke P.; Van Katwijk, Marieke M.; Asmus, Ragnhild; Auby, Isabelle; Barille, Laurent; Brun, Fernando G.; Cardoso, Patricia G.; Desroy, Nicolas; Fournier, Jerome; Ganthy, Florian; Garmendia, Joxe-mikel; Godet, Laurent; Grilo, Tiago F.; Kadel, Petra; Ondiviela, Barbara; Peralta, Gloria; Puente, Araceli; Recio, Maria; Rigouin, Loic; Valle, Mireia; Herman, Peter M. J.; Bouma, Tjeerd J..
Seagrass meadows form highly productive and valuable ecosystems in the marine environment. Throughout the year, seagrass meadows are exposed to abiotic and biotic variations linked to (i) seasonal fluctuations, (ii) short-term stress events such as, e.g., local nutrient enrichment, and (iii) small-scale disturbances such as, e.g., biomass removal by grazing. We hypothesized that short-term stress events and small-scale disturbances may affect seagrass chance for survival in temperate latitudes. To test this hypothesis we focused on seagrass carbon reserves in the form of starch stored seasonally in rhizomes, as these have been defined as a good indicator for winter survival. Twelve Zostera noltei meadows were monitored along a latitudinal gradient in...
Tipo: Text Palavras-chave: Carbon reserves; European Atlantic coast; Latitude; Resilience; Zostera noltei; Climate setting; Stress events.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00423/53420/54308.pdf
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Particulate Matter in Mangrove Forests and Seagrass Beds as a Nitrogen Source in Tropical Coastal Ecosystems ArchiMer
Gillis, Lucy G.; Bouma, Tjeerd J.; Cathalot, Cecile; Ziegler, Alan D.; Herman, Peter M..
We show in laboratory and field investigations that in the short-term seagrasses obtain most of their required nitrogen from the degradation of seagrass leaves, rather than degradation of leaves exported from adjacent mangroves. Mangrove forests at our Thailand site retain the majority of their nutrients, and therefore potentially buffer seagrasses from nutrients.
Tipo: Text Palavras-chave: Buffering; Mangrove forests; Nitrogen; Outwelling; Particulate organic material; Seagrass beds.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00266/37731/42021.pdf
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Tiny Is Mighty: Seagrass Beds Have a Large Role in the Export of Organic Material in the Tropical Coastal Zone ArchiMer
Gillis, Lucy G.; Ziegler, Alan D.; Van Oevelen, Dick; Cathalot, Cecile; Herman, Peter M. J.; Wolters, Jan W.; Bouma, Tjeerd J..
Ecosystems in the tropical coastal zone exchange particulate organic matter (POM) with adjacent systems, but differences in this function among ecosystems remain poorly quantified. Seagrass beds are often a relatively small section of this coastal zone, but have a potentially much larger ecological influence than suggested by their surface area. Using stable isotopes as tracers of oceanic, terrestrial, mangrove and seagrass sources, we investigated the origin of particulate organic matter in nine mangrove bays around the island of Phuket (Thailand). We used a linear mixing model based on bulk organic carbon, total nitrogen and delta C-13 and delta N-15 and found that oceanic sources dominated suspended particulate organic matter samples along the...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00242/35335/33926.pdf
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