454
M. Fabiano et al.
of organic materials from Po river is the main
force sustaining a permanent coupling in the
northern area, but the organic matter amounts
reaching the sediments might be so high that
benthic microbial activities may be induced to a
self feed-back control by temporary ipoxic conditions. We hypothesise that in these conditions
of clear pelagic-benthic coupling, organic matter
transfer might be reflected by spatially and temporally confined functional uncoupling.
Therefore, seasonal variations in the chemical
and biological features of the water - sediment
interactions may affect the balance between supply and exploitation of organic matter, thus forcing the systems to different trophic patterns.
References
Berdalet E, Dortch 0 (1991) New double-staining technique for
RNA and DNA measurement in marine phytoplankton. Mar
Eeol Prog Ser 73: 295-305
Bligh EG, Dyer W (1959) A rapid method for total lipid extraction
and purification. Can I Biochem Physiol37: 911-917
Cerovedd I, Pasaric Z, Zuzmic M, Orlic M (1990) Observations of
currents and temperature on the Adriatic shelf in summer.
Rapp P V Reun Comm Int Explor Sci Mer Mediterr, 32: 163
Danovaro R (1996) Detritus-bacteria-meiofauna interactions in a
seagras! bed (Posidonia oceanica) of the NW
Mediterranean. Mar BioI 127: 1-13
DanoVllIO R, Fabiano M, Della Croce N (1993) Labile organic matter and microbial biomasses in deep-sea sediments (eastern
Mediterranean Sea). Deep-Sea Res 40, 953-965
Dubois M, Gilles K, Hamilton JK, Rebers PA, Smith F (1956)
Colorimetric method for determination of sugars and related substances. Anal Chem 28: 350-356
Fabiano M, Chiantore M, Favero P, Cattaneo-Vietti R, Pusceddu A,
Misic C,Albertelli G (1997) Short-term variations in particulate matter flux in Terra NoVII Bay, Ross Sea. Antarct Sci 9,
2: 143-149
Fabiano M, Danovaro R, Fraschetti S (1995) A three-year time
series of elemental and biochemical composition of organic matter in subtidal sandy sediments of the Ligurian Sea
(northwestern Mediterranean). Cant Shelf Res 15: 14531469
Fabiano M. Pavero P, Danovaro R (1993) Distribution and composition of particulate organic matter in the Ross Sea
(Antarctica). Polar BioI 3: 525-533
Ferrari GM, Mingazzini M (1995) Synchronous fluorescence spectra of dissolved organic matter (DOM) of algal origin in
marine coastal waters. Mar Ecol Prog Sec 125: 305-315
Franco p. Jeftic LJ. Malanone-Rizzoli P, Michelato A, Orlic M
(1982) Descriptive model of the northern Adriatic. Oceanol
Acta 5: 379-389
Gilmartin M,Degobbis 0, Revelante N, Smodlaka N (1990) The
mechanism controlling plant nutrient concentrations in the
northern Adriatic Sea. Int Rev Gessameite Hydrobiol 75:
425-455
Graf G (1992) Benthic-pelagic coupling: a benthic view. Oceanogr
Mar BioI Annu Rev 30: 149-190
Graf G, Bengtsson W. Diesner U, Theede H (1982) Benthic
response to sedimentation of a spring phytoplankton
bloom: process and budget. Mar BioI Prog Ser 67: 201-208
Hartree EF (1972) Determination of proteins: a modification of
the Lowry method that gives a linear photometric response.
Anal Biochem 48: 422-427
Keil RG, Kirchman DL (1993) Dissolved combined aminoacids in
marine waters: chemical form and utilization by heterotrophic bacteria. Limnol Oceanogr 38: 1256-1270
Marsh JB, Weinstein WJ (1966) A simple charring method for
determination of lipids. J Lipid Res 7: 574-576
Paer! HW, Pinckney JL, Fear ]M, Peierls BL (1998) Ecosystem
responses to internal and watershed organic matter loading:
consequences for hypoxia in the eutrophying Neuse River
Estuary, North Carolina, USA. Mar Ecol Prog Ser 166: 17-25
Peinert R, Bodungen B von, Smetacek VS (1989) Food web strncture and loss rate. In: Rep Dahlem-workshop. Willey
Interscience Publ 44, Chichester, UK, pp 35-48
Revelante N, Gilmartin M (1992) The lateral advection of particulate organic matter from the Po Delta region during summer stratification, and its implications for the northern
Adriatic. Estuarine Coast Shelf Sd 35: 191-212
Wassman P (1990) Relationship between primary production in
the boreal coastal zone of the North Atlantic. Limnol
Oceanogr 35: 464-471
Zachleder V (1984) Optimization of nucleic acids assay in green
and blue-green algae: extraction procedures and the lightactiVllted diphenilamine reaction for DNA. Arch Hydrobiol
67:313-328
M. Fabiano et al.
of organic materials from Po river is the main
force sustaining a permanent coupling in the
northern area, but the organic matter amounts
reaching the sediments might be so high that
benthic microbial activities may be induced to a
self feed-back control by temporary ipoxic conditions. We hypothesise that in these conditions
of clear pelagic-benthic coupling, organic matter
transfer might be reflected by spatially and temporally confined functional uncoupling.
Therefore, seasonal variations in the chemical
and biological features of the water - sediment
interactions may affect the balance between supply and exploitation of organic matter, thus forcing the systems to different trophic patterns.
References
Berdalet E, Dortch 0 (1991) New double-staining technique for
RNA and DNA measurement in marine phytoplankton. Mar
Eeol Prog Ser 73: 295-305
Bligh EG, Dyer W (1959) A rapid method for total lipid extraction
and purification. Can I Biochem Physiol37: 911-917
Cerovedd I, Pasaric Z, Zuzmic M, Orlic M (1990) Observations of
currents and temperature on the Adriatic shelf in summer.
Rapp P V Reun Comm Int Explor Sci Mer Mediterr, 32: 163
Danovaro R (1996) Detritus-bacteria-meiofauna interactions in a
seagras! bed (Posidonia oceanica) of the NW
Mediterranean. Mar BioI 127: 1-13
DanoVllIO R, Fabiano M, Della Croce N (1993) Labile organic matter and microbial biomasses in deep-sea sediments (eastern
Mediterranean Sea). Deep-Sea Res 40, 953-965
Dubois M, Gilles K, Hamilton JK, Rebers PA, Smith F (1956)
Colorimetric method for determination of sugars and related substances. Anal Chem 28: 350-356
Fabiano M, Chiantore M, Favero P, Cattaneo-Vietti R, Pusceddu A,
Misic C,Albertelli G (1997) Short-term variations in particulate matter flux in Terra NoVII Bay, Ross Sea. Antarct Sci 9,
2: 143-149
Fabiano M, Danovaro R, Fraschetti S (1995) A three-year time
series of elemental and biochemical composition of organic matter in subtidal sandy sediments of the Ligurian Sea
(northwestern Mediterranean). Cant Shelf Res 15: 14531469
Fabiano M. Pavero P, Danovaro R (1993) Distribution and composition of particulate organic matter in the Ross Sea
(Antarctica). Polar BioI 3: 525-533
Ferrari GM, Mingazzini M (1995) Synchronous fluorescence spectra of dissolved organic matter (DOM) of algal origin in
marine coastal waters. Mar Ecol Prog Sec 125: 305-315
Franco p. Jeftic LJ. Malanone-Rizzoli P, Michelato A, Orlic M
(1982) Descriptive model of the northern Adriatic. Oceanol
Acta 5: 379-389
Gilmartin M,Degobbis 0, Revelante N, Smodlaka N (1990) The
mechanism controlling plant nutrient concentrations in the
northern Adriatic Sea. Int Rev Gessameite Hydrobiol 75:
425-455
Graf G (1992) Benthic-pelagic coupling: a benthic view. Oceanogr
Mar BioI Annu Rev 30: 149-190
Graf G, Bengtsson W. Diesner U, Theede H (1982) Benthic
response to sedimentation of a spring phytoplankton
bloom: process and budget. Mar BioI Prog Ser 67: 201-208
Hartree EF (1972) Determination of proteins: a modification of
the Lowry method that gives a linear photometric response.
Anal Biochem 48: 422-427
Keil RG, Kirchman DL (1993) Dissolved combined aminoacids in
marine waters: chemical form and utilization by heterotrophic bacteria. Limnol Oceanogr 38: 1256-1270
Marsh JB, Weinstein WJ (1966) A simple charring method for
determination of lipids. J Lipid Res 7: 574-576
Paer! HW, Pinckney JL, Fear ]M, Peierls BL (1998) Ecosystem
responses to internal and watershed organic matter loading:
consequences for hypoxia in the eutrophying Neuse River
Estuary, North Carolina, USA. Mar Ecol Prog Ser 166: 17-25
Peinert R, Bodungen B von, Smetacek VS (1989) Food web strncture and loss rate. In: Rep Dahlem-workshop. Willey
Interscience Publ 44, Chichester, UK, pp 35-48
Revelante N, Gilmartin M (1992) The lateral advection of particulate organic matter from the Po Delta region during summer stratification, and its implications for the northern
Adriatic. Estuarine Coast Shelf Sd 35: 191-212
Wassman P (1990) Relationship between primary production in
the boreal coastal zone of the North Atlantic. Limnol
Oceanogr 35: 464-471
Zachleder V (1984) Optimization of nucleic acids assay in green
and blue-green algae: extraction procedures and the lightactiVllted diphenilamine reaction for DNA. Arch Hydrobiol
67:313-328