Seasonality and composition of particulate fluxes during ECOMARGE—I, western Gulf of Lions

Stable isotopes (13C/12C and 15N/14N) insettling organic matter of the northwestern Mediterranean Sea: biogeochemical implications

“…No significant temporal and depth trends in mass fluxes were observed during the experiment, and traps fluctuated independently from each other. However, our data showed that total mass fluxes did not significantly decrease with depth, which implies the occurrence of lateral transport of particles, as it has been described for most trap experiments on continental margins (Monaco et al, 1990;Iseki et al, 1995;Heussner et al, 1999). C:N ratios were comprised between 6.1 and 12.3.…”

Stable isotopes (13C/12C and 15N/14N) insettling organic matter of the northwestern Mediterranean Sea: biogeochemical implications

“…No significant temporal and depth trends in mass fluxes were observed during the experiment, and traps fluctuated independently from each other. However, our data showed that total mass fluxes did not significantly decrease with depth, which implies the occurrence of lateral transport of particles, as it has been described for most trap experiments on continental margins (Monaco et al, 1990;Iseki et al, 1995;Heussner et al, 1999). C:N ratios were comprised between 6.1 and 12.3.…”

Particle fluxes over a Mediterranean seagrass bed:a one year case study

“…The total measured flux of matter enterlng the traps over a complete annual cycle was about 1.3 kg m-2, which corresponds to a mean daily flux of 3.7 g m-2. These values are in good agreement with other published data (reviewed by Wassmann 1983), but are quite low compared with those measured, e.g., by Buscail et al (1990) and Monaco et al (1990) on the western French Mediterranean continental shelf (26 to 110 g m-' d-l), but the latter were influenced by land-derived inputs from the River Tet prodelta. In the Bay of Calvi, the only terrigenous inputs consist of eolian and rainfalldriven material which is negligible compared with the bulk of matter reaching the seafloor.…”

“…Calculated yearly flux of settling suspended particulate matter is about 420 g m-" which corresponds to a mean daily flux of 1.2 g m-2. These values are of the same order of magnitude as those presented by Monaco et al (1990) for traps deployed in the photic zone of a relatively similar oceanic area, the LacazeDuthiers Canyon, Gulf of Lions, France. Assuming a mean POC/total trapped mass ratio of 10 "/o (several authors in Wassmann 1983) and a mean local planktonic primary production estimate of 400 g C m-' yr-' (Licot 1985, Velimirov & Walenta-Simon 1992, our data suggest that about 10% of the matter produced in the pelagic zone should sink and reach the bottom in the shallow Bay waters.…”

Efficiency of the silicate pump at a coastal oligotrophic site in the Mediterranean Sea

“…As a general trend, one could also note an average increase of 30% of the mass flux from the surface trap to the bottom trap, which is the reverse of what is commonly observed in the open ocean, where the sedimenting flux rapidly decreases with depth. This phenomenon has already been described for the Gulf of Lions (Monaco et al, 1990;Kerhervé et al, 2001) and several other locations (Brzezinski, 1985).…”

Stable isotopes (13C/12C and 15N/14N) insettling organic matter of the northwestern Mediterranean Sea: biogeochemical implications

“…No significant temporal and depth trends in mass fluxes were observed during the experiment, and traps fluctuated independently from each other. However, our data showed that total mass fluxes did not significantly decrease with depth, which implies the occurrence of lateral transport of particles, as it has been described for most trap experiments on continental margins (Monaco et al, 1990;Iseki et al, 1995;Heussner et al, 1999). C:N ratios were comprised between 6.1 and 12.3.…”

Particle fluxes over a Mediterranean seagrass bed:a one year case study

“…The total measured flux of matter enterlng the traps over a complete annual cycle was about 1.3 kg m-2, which corresponds to a mean daily flux of 3.7 g m-2. These values are in good agreement with other published data (reviewed by Wassmann 1983), but are quite low compared with those measured, e.g., by Buscail et al (1990) and Monaco et al (1990) on the western French Mediterranean continental shelf (26 to 110 g m-' d-l), but the latter were influenced by land-derived inputs from the River Tet prodelta. In the Bay of Calvi, the only terrigenous inputs consist of eolian and rainfalldriven material which is negligible compared with the bulk of matter reaching the seafloor.…”

“…Calculated yearly flux of settling suspended particulate matter is about 420 g m-" which corresponds to a mean daily flux of 1.2 g m-2. These values are of the same order of magnitude as those presented by Monaco et al (1990) for traps deployed in the photic zone of a relatively similar oceanic area, the LacazeDuthiers Canyon, Gulf of Lions, France. Assuming a mean POC/total trapped mass ratio of 10 "/o (several authors in Wassmann 1983) and a mean local planktonic primary production estimate of 400 g C m-' yr-' (Licot 1985, Velimirov & Walenta-Simon 1992, our data suggest that about 10% of the matter produced in the pelagic zone should sink and reach the bottom in the shallow Bay waters.…”

Efficiency of the silicate pump at a coastal oligotrophic site in the Mediterranean Sea

“…As a general trend, one could also note an average increase of 30% of the mass flux from the surface trap to the bottom trap, which is the reverse of what is commonly observed in the open ocean, where the sedimenting flux rapidly decreases with depth. This phenomenon has already been described for the Gulf of Lions (Monaco et al, 1990;Kerhervé et al, 2001) and several other locations (Brzezinski, 1985).…”

Stable isotopes (13C/12C and 15N/14N) insettling organic matter of the northwestern Mediterranean Sea: biogeochemical implications

“…No significant temporal and depth trends in mass fluxes were observed during the experiment, and traps fluctuated independently from each other. However, our data showed that total mass fluxes did not significantly decrease with depth, which implies the occurrence of lateral transport of particles, as it has been described for most trap experiments on continental margins (Monaco et al, 1990;Iseki et al, 1995;Heussner et al, 1999). C:N ratios were comprised between 6.1 and 12.3.…”

Particle fluxes over a Mediterranean seagrass bed:a one year case study

“…The total measured flux of matter enterlng the traps over a complete annual cycle was about 1.3 kg m-2, which corresponds to a mean daily flux of 3.7 g m-2. These values are in good agreement with other published data (reviewed by Wassmann 1983), but are quite low compared with those measured, e.g., by Buscail et al (1990) and Monaco et al (1990) on the western French Mediterranean continental shelf (26 to 110 g m-' d-l), but the latter were influenced by land-derived inputs from the River Tet prodelta. In the Bay of Calvi, the only terrigenous inputs consist of eolian and rainfalldriven material which is negligible compared with the bulk of matter reaching the seafloor.…”

“…Calculated yearly flux of settling suspended particulate matter is about 420 g m-" which corresponds to a mean daily flux of 1.2 g m-2. These values are of the same order of magnitude as those presented by Monaco et al (1990) for traps deployed in the photic zone of a relatively similar oceanic area, the LacazeDuthiers Canyon, Gulf of Lions, France. Assuming a mean POC/total trapped mass ratio of 10 "/o (several authors in Wassmann 1983) and a mean local planktonic primary production estimate of 400 g C m-' yr-' (Licot 1985, Velimirov & Walenta-Simon 1992, our data suggest that about 10% of the matter produced in the pelagic zone should sink and reach the bottom in the shallow Bay waters.…”

Efficiency of the silicate pump at a coastal oligotrophic site in the Mediterranean Sea

“…As a general trend, one could also note an average increase of 30% of the mass flux from the surface trap to the bottom trap, which is the reverse of what is commonly observed in the open ocean, where the sedimenting flux rapidly decreases with depth. This phenomenon has already been described for the Gulf of Lions (Monaco et al, 1990;Kerhervé et al, 2001) and several other locations (Brzezinski, 1985).…”