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Tab. 3.4.6 – Composizione isotopica (δ13C e δ15N; ‰) delle fonti di materia
organica campionate a Marettimo (zona A). d.s.: deviazione
standard.

Sito Tempo 13C d.s. 15N d.s.

Macroalghe 1 1 -22.6 1.0 -0.2 0.5
2 1 -23.1 0.4 -0.1 0.1
3 1 -23.8 0.5 0.0 0.1
1 2 -20.2 1.6 0.5 0.2
2 2 -19.3 0.6 0.8 0.2
3 2 -19.8 0.9 0.4 0.2

Materia organica particellata 1 1 -23.0 1.3 4.0 1.0
2 1 -24.0 0.4 2.2 0.5
3 1 -23.6 0.6 2.6 0.5
1 2 -22.8 0.2 2.9 0.9
2 2 -22.4 0.5 2.1 0.5
3 2 -21.8 0.5 2.2 0.7

Materia organica sedimentaria 1 1 -19.9 0.2 1.3 0.4
2 1 -19.7 0.2 1.1 0.2
3 1 -19.9 0.4 2.4 0.4
1 2 -19.3 0.4 2.1 0.4
2 2 -19.7 0.4 1.6 0.9
3 2 -19.4 0.6 0.8 0.2

Posidonia oceanica detrito 1 1 -13.0 0.4 0.9 0.3
2 1 -12.8 0.0 1.1 1.7
3 1 -13.1 0.5 1.6 0.2
1 2 -13.8 0.9 0.9 0.6
2 2 -14.2 0.8 1.0 0.1
3 2 -14.6 0.9 1.3 0.2

Posidonia oceanica epifiti 1 1 -17.0 0.0 2.6 0.3
2 1 -16.5 0.5 1.7 0.0
3 1 -18.3 0.8 2.2 0.1
1 2 -18.4 0.7 2.3 0.1
2 2 -18.6 0.5 2.5 0.1
3 2 -18.8 0.6 2.7 0.2

Posidonia oceanica apici 1 1 -15.3 0.1 -0.1 0.6
2 1 -15.4 0.8 0.4 0.2
3 1 -15.2 1.0 1.1 0.3
1 2 -14.1 0.6 0.8 0.1
2 2 -15.1 0.8 1.1 0.1
3 2 -14.84 0.7 1.1 0.0

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