Seagrass leaves

Yamamuro, M., Kayanne, H., and Yamano, H. (2003). delta N-15 of seagrass leaves for monitoring anthropogenic nutrient increases in coral reef ecosystems. Mar. Pollut. Bull. 46, 452-458. 

In addition, in some areas, enhanced epiphytic growth on seagrass leaves further reduces hght avadabihty, eventually leading to loss of this community (e.g., Taylor et al, 1995 Twihey et al., 1985). 

Stapel, J., and Hemminga, M. A. (1997). Nutrient resorption from seagrass leaves. Mar. Biol. 128, 197-206. 

In experimental studies of H. scabra, leaves of the seagrass T. hemprichii, with or without their natural biofilm, were demonstrated to yield the highest settlement rates (4.8-10.5 %) (Mercier et al., 2000b). The seagrass T. hemprichii was preferred as a settlement substratum over sand, crushed coral, several other plant species and artificial seagrass leaves, with or without a biofilm. Only settlement on another seagrass, E. acoroides, was similar to that recorded for T. hemprichii (Mercier et al., 2000b). In the absence of a suitable substrate, the larvae delayed settlement for nearly 96 h and survival was <0.5 %. 

Peduzzi, P., and G. J. Herndl. 1991. Decomposition and significance of seagrass leaf litter (Cymodocea modosa) for the microbial food web in coastal waters (Gulf of Trieste, Northern Adriatic Sea). Marine Ecology Progress Series 71 163—174. 

LeafN content is an important determinant of food preference and the quantity of seagrass material consumed for some herbivores. Several field and laboratory studies have found a positive relationship between leaf N content and grazing by parrotfish, turtles and dugongs (e.g., Goecker et al, 2005 McGlathery, 1995 ... 

Given the relatively low assimilation efficiency of most herbivores, little of the ingested leaf and epiphyte material will remain in consumer biomass. Most will be egested as feces or soluble compounds and will be remineralized. This suggests that where grazing is an important fate for seagrass material, most of the N bound in the plant material will be transferred to the decomposers. If the grazers are mobile, a portion of this N may be lost from the system (Preen, 1995). 

Lee, K., and Dunton, K. H. (2000). Effects of nitrogen enrichment on biomass allocation, growth, and leaf morphology of the seagrass Thalassia testudinum. Mar. Ecol. Prog. Ser. 196, 39—48. 

Seagrass Thalassia testudimm + Prudhoe Bay crude lethality, leaf coloration... 

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