TY - JOUR
T1 - Short-term sedimentation pulses recorded with a fluorescence sensor and sediment traps at 900-m depth in the Canary basin
AU - Fischer, Gerhard
AU - Neuer, Susanne
AU - Wefer, Gerold
AU - Krause, Gunther
PY - 1996/9
Y1 - 1996/9
N2 - We observed short-term peaks in pigment fluorescence and backscattering using optical sensors combined with time-series sediment traps at ~ 900-m depth at an oligotrophic site in the Canary Island region. These events were observed in late winter to early spring and lasted only a few hours to a few days. The events generally coincided with late winter to early spring flux maxima recorded by the traps. Surprisingly, microscopic analyses showed no evidence of sedimentation of intact phytoplankton cells during the fluorescence peaks. However, we observed well-preserved zooplankton fecal pellets containing densely packed coccoliths and, presumably, large amounts of chlorophyll-derived pigments.
AB - We observed short-term peaks in pigment fluorescence and backscattering using optical sensors combined with time-series sediment traps at ~ 900-m depth at an oligotrophic site in the Canary Island region. These events were observed in late winter to early spring and lasted only a few hours to a few days. The events generally coincided with late winter to early spring flux maxima recorded by the traps. Surprisingly, microscopic analyses showed no evidence of sedimentation of intact phytoplankton cells during the fluorescence peaks. However, we observed well-preserved zooplankton fecal pellets containing densely packed coccoliths and, presumably, large amounts of chlorophyll-derived pigments.
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U2 - 10.4319/lo.1996.41.6.1354
DO - 10.4319/lo.1996.41.6.1354
M3 - Article
AN - SCOPUS:0030462078
SN - 0024-3590
VL - 41
SP - 1354
EP - 1359
JO - Limnology and Oceanography
JF - Limnology and Oceanography
IS - 6
ER -