Characterization of carbohydrates during early diagenesis of five vascular plant tissues

agua de mar avicennia azucares bois carbohidratos carbohydrates chemical composition composition chimique degradation eau de mer feuille glucide hojas leaves madera organic matter plant tissues sea water spartina spartina alterniflora sucre acide sucres sugar acids sugars taxodium taxodium distichum tejidos vegetales uronic acids wood xilosa xylose