Dear Andrzej,

I use the following one: Geochemistry of Marine Sediments from David J. Burdige (2006). Not focusing on macrophyte but useful for the P, N, C cycles in organic sediments.

Regards

Dear Andrzej Pukacz; Please go through the following links. Thanks

ftp://ftp.soest.hawaii.edu/glazer/Chen%20References/Papers1/Billerbeck%202006%20Nutrient%20recycling%20in%20intertidal%20sandy%20sediment.pdf

http://onlinelibrary.wiley.com/doi/10.4319/lo.2002.47.5.1346/abstract

Dear Andrzej,

I am very familiar with organic matter and nutrient cycling in shallow marine sediments, but not so much with freshwater sediments. However, I did a brief search on the topic and I recommend you look at the following, that may also provide leads to other studies.

http://www.jlimnol.it/index.php/jlimnol/article/view/jlimnol.2011.305

https://www.schweizerbart.de/papers/fal/detail/179/76458/Seasonal_changes_in_tissue_nutrient_concentrations_of_macroalgae_and_aquatic_angiosperms_in_Mediterranean_ponds_North_Western_Spain

http://link.springer.com/article/10.1007/s11270-007-9459-0

http://onlinelibrary.wiley.com/doi/10.1002/1099-0755%28200007/08%2910:4%3C305::AID-AQC415%3E3.0.CO;2-P/abstract

http://link.springer.com/chapter/10.1007%2F978-94-009-1744-6_12

If you need information on marine systems, please let me know.

Best regards,

Angelos.