+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Microscale distributions of phytoplankton: Initial results from a two-dimensional imaging fluorometer, OSST

, : Microscale distributions of phytoplankton: Initial results from a two-dimensional imaging fluorometer, OSST. Marine Ecology Progress Series 220: 59-72, September 27

A digital camera system was designed to photograph laser-stimulated fluorescence of phytoplankton in situ at 0.67X0.67 cm resolution over an area of 70X70 cm. In a series of vertical profiles, 1200 images were collected. Criteria were developed to reject images smeared by camera motions (due to ship heave), and images taken when vertical velocities were >0.2 m s-1, leaving 240 good images. Horizontal velocities calculated using ancillary data from the FishTV imaging sonar showed the water to be directed toward the imaging plane during the deployment, supporting the hypothesis that images were uncontaminated by mixing from the instrument package. Images passing all the criteria show strong isotropic spatial variability. The averaged spatial spectrum was flat, suggesting an underlying random distribution of brightly fluorescent particles-probably phytoplankton aggregates. Such observations have important implications for our understanding of the food environment of herbivorous zooplankton, and the mechanisms creating and maintaining patchiness in the ocean.


Other references

Pazmino Vargas, L.; Gabela A.F., 1985: Band application of herbicides to a potato (Solanum tuberosum L.) crop. Potatoes were grown in Chillagallo, Pichincha at 2886 m alt. on a sandy clay loam soil and metribuzin or diuron + paraquat was applied in strips 0.3, 0.6, 0.9 or 1.2 m wide 20 days after planting at approx. 5% emergence. Assessments of weed contro...

Fischer, W., 1967: Current knowledge of the ureter function in cervical carcinoma. Zentralblatt für Gynakologie 89(31): 1112-1121

Williams, D.; Acevedo, P.; Gortazar, C.; Escudero, M., A.; Labarta, J.-Luis; Marco, J.; Villafuerte, R., 2007: Hunting for answers: rabbit (Oryctolagus cuniculus) population trends in northeastern Spain. Some populations of European wild rabbit (Oryctolagus cuniculus) in Spain have recovered after rabbit hemorrhagic disease, but others (the majority) have not recovered. The European wild rabbit is a keystone species in Spain's Mediterranean e...

Adams, M.H.; Wade, E., 1954: Classification of bacterial viruses; the relationship of two Serratia phages to coli-dysentery phages T3, T7, and D44. Journal of Bacteriology 68(3): 320-325

Weyens, G.; Rose, K.; Falmagne, P.; Glansdorff, N.; Pierard, A., 1985: Synthesis of escherichia coli carbamoylphosphate synthetase ec at a uug codon. The ribosome binding region of the mRNA for the E. coli carA gene (carbamoylphosphate synthetase gene) contains 2 adjacent putative translational start codons, UUG and AUU, both of them unusual. By Edman degradation and mass spectrometry of purifi...

Haffner, Kv., 1935: Die ursprungliche Stellung der Beine bei den Amphipoden. Zoologischer Anzeiger Leipzig, 111: 177-189

Serova, G.A.; Inozemtseva, A.A.; Smirnov, A.S.; Pavlova, V.V.; Sadikova, N.S., 1980: "Gamma" stock for preparing porcelain dental crowns. Stomatologiia 59(1): 81-81

Cunningham, J.L.; Kenwright, J.; Kershaw, C.J., 1990: Biomechanical measurement of fracture healing. Three techniques for measuring fracture healing are presented. These techniques are: (1) use of strain gauge measurements of the forces in an external fixator to determine fracture stiffness, (2) measurement of the vibration modes of a fractured l...

Zheng, M.; Xiao, R-Ping., 2011: Role of mitofusin 2 in cardiovascular oxidative injury. Mitochondria are highly dynamic organelles with constant shape changes regulated by fusion and fission events. In addition to regulating mitochondrial morphology, mitochondrial fusion/fission is involved in fundamental mitochondrial biological pro...

Pauly, M.E.; Pringle, W.C.; Merlic, C.A., 1997: Application of asymmetric amplification via achiral auxiliaries for the synthesis of deoxy-carbohydrates. Abstracts of Papers American Chemical Society 213(1-3): ORGN 479