Bibliography of the Maurice Lamontagne Institute

Alain VÉZINA

TIAN, R.C., A.F. VÉZINA, L. LEGENDRE, R.G. INGRAM, B. KLEIN, T. PACKARD, S. ROY, C. SAVENKOFF, N. SILVERBERG, J.-C. THERRIAULT, J.É. TREMBLAY, 2000. Effects of pelagic food-web interactions and nutrient remineralization on the biogeochemical cycling of carbon : a modeling approach. Deep-Sea Res., Part II, Top. Stud. Oceanogr. 47(3-4): 637-662 .

SAVENKOFF, C., A.F. VEZINA, S. ROY, B. KLEIN, C. LOVEJOY, J.-C. THERRIAULT, L. LEGENDRE, R. RIVKIN, C. BÉRUBÉ, J.-E. TREMBLAY, N. SILVERBERG, 2000. Export of biogenic carbon and structure and dynamics of the pelagic food web in the Gulf of St. Lawrence : Part 1. Seasonal variations. Deep-Sea Res., Part II, Top. Stud. Oceanogr. 47(3-4): 585-607 .

PACKARD, T., W. CHEN, D. BLASCO, C. SAVENKOFF, A.F. VEZINA, R. TIAN, L. ST-AMAND, S.O. ROY, C. LOVEJOY, B. KLEIN, J.-C. THERRIAULT, L. LEGENDRE, R.G. INGRAM, 2000. Dissolved organic carbon in the Gulf of St. Lawrence. Deep-Sea Res., Part II , Top. Stud. Oceanogr., 47(3-4): 435-459 .

VÉZINA, A.F., C. SAVENKOFF, S. ROY, B. KLEIN, R. RIVKIN, J.-C. THERRIAULT, L. LEGENDRE, 2000. Export of biogenic carbon and structure and dynamics of the pelagic food web in the Gulf of St. Lawrence Part 2. Inverse analysis. Deep-Sea Res., Part II , Top. Stud. Oceanogr., 47(3-4): 609-635 .

SCARRATT, M.G., M. LEVASSEUR, S. SCHULTES, S. MICHAUD, G. CANTIN, A. VÉZINA, M. GOSSELIN, S.J. DE MORA, 2000. Production and consumption of dimethylsulfide (DMS) in North Atlantic waters. Mar. Ecol. Prog. Ser., 204: 13-26 .

ROY, S., N. SILVERBERG, N. ROMERO, D. DEIBEL, B. KLEIN, C. SAVENKOFF, A.F. VÉZINA, J.-É. TREMBLAY, L. LEGENDRE, R.B. RIVKIN, 2000. Importance of mesozooplankton feeding for the downward flux of biogenic carbon in the Gulf of St. Lawrence (Canada). Deep-Sea Res., Part II, Top. Stud. Oceanogr., 47(3-4): 519-544 .

ZAKARDJIAN, B.A., Y. GRATTON, A.F. VÉZINA, 2000. Late spring phytoplankton bloom in the Lower St. Lawrence Estuary: the flushing hypothesis revisited. Mar. Ecol. Prog. Ser., 192: 31-48 .

ROY, S., B. SUNDBY, A.F. VEZINA, L. LEGENDRE, 2000. A Canadian JGOFS process study in the Gulf of St. Lawrence : introduction. Deep-Sea Res., Part II, Top. Stud. Oceanogr., 47(3-4): 377-384 .

TOURATIER, F., L. LEGENDRE, A. VÉZINA, 1999. Model of copepod growth influenced by the food carbon : nitrogen ratio and concentration, under the hypothesis of strict homeostasis. J. Plankton Res., 21: 1111-1132 .

LAROCHE, D., VEZINA, A.F., LEVASSEUR, M., GOSSELIN, M., STEFELS, J., KELLER, M.D., MATRAI, P.A., R.L.J. KWINT, 1999. DMSP synthesis and exudation in phytoplankton : A modeling approach. Mar. Ecol. Prog. Ser., 180: 37-49 .

TOURATIER, F., L. LEGENDRE, A. VÉZINA, 1999. Model of bacterial growth influenced by substrate C:N ratio and concentration. Aquat. Microbiol. Ecol., 19(2): 105-118 .

VEZINA, A.F., C. SAVENKOFF, 1999. Inverse modeling of carbon and nitrogen flows in the pelagic food web of the northeast subarctic Pacific. Deep-Sea Res., Part II, 46: 2909-2939 .

FUENTES-YACO, C., A.F. VÉZINA, T. PLATT, W.G. HARRISON, P.G. CORMIER, L.E. WAITE, L. DEVINE, 1998. Spatio-temporal distribution of phytoplankton pigments in Northumberland Strait : CZCS imagery and in situ data. Can. Tech. Rep. Hydrogr. Ocean Sci., 195, 37 p .

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This report describes the spatial and seasonal variations of phytoplankton pigments in the southern Gulf of St. Lawrence using Coastal Zone Color Scanner (CZCS) images and in situ data collected during different periods. To compare the patterns obtained with both methods, the CZCS and in situ data were grouped into regional subdivisions and computed averages. Because there are no climatological standards for biological and chemical data to compare with this information, subdivisions were developed for commercial fisheries (International Commission for Northwest Atlantic Fisheries [ICNAF/NAFO]) and physical oceanographic features (Petrie et al., 1996) as first attempts. Finally, we used new subareas based on visual analyses of satellite phytoplankton pigment imagery. Both the satellite and in situ data sets show similar synoptic patterns in the spatial distribution of phytoplankton pigments; however, the CZCS estimate gives a more detailed view, suggesting five subareas. The pigment concentrations evaluated in these subareas seemed to vary temporally in agreement with in situ measurements, showing a bi-modal cycle with high and comparable pigment levels during both spring and late summer - early fall. In conclusion, we recommend : i) the study of possible links between in situ biological (phytoplankton biomass), physical, and nutrient data within the subareas identified using CZCS-derived phytoplankton pigment levels; ii) the confirmation or modification of the proposed regionalization using remote sensing data from new satellites like the SeaWIFS and with sensors of higher spatial resolution (CASI); and iii) that the grid stations in future research missions be modified to adequately sample the different subareas identified using CZCS images.

SAVENKOFF, C., A.F. VÉZINA, Y. GRATTON, D. BLASCO, J.-P. CHANUT, 1998. Distribution of microplankton assemblages in relation to mesoscale variations in the lower St. Lawrence Estuary (June-July 1990). Can. Tech. Rep. Hydrogr. Ocean Sci., 197, 26 p .

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As part of a multidisciplinary program to study the physical and biological interactions regulating carbon flows in the lower St. Lawrence Estuary (LSLE), three cruises were conducted in June-July 1990 during a neap-spring tidal cycle when biological production was expected to be maximal. This study presents the first analyses of phytoplankton biomass, primary production, and respiratory ETS activity along with the identification and size structure of the autotrophic and heterotrophic planktonic communities throughout the bloom period in the LSLE. Two areas of accumulation of phytoplankton cells and biomass with different hydrologic and biological characteristics were observed during the study. The factors that triggered these phytoplankton blooms are analyzed.

FUENTES-YACO, C., A.F. VÉZINA, M. GOSSELIN, Y. GRATTON, P. LAROUCHE, 1997. Influence of late-summer storms on the horizontal variability of phytoplankton pigment determined by Coastal Zone Color Scanner images in the Gulf of St. Lawrence, Canada. Pages 678-683 in S.G. Ackleson & R.J. Frouin (ed.). Ocean Optics XIII : proceedings .

The western Gulf of St. Lawrenoe (GSL) is characterized by high, persistent phytopIankton production and functions as the principal supplier of phytoplankton biomass for the central and eastern Gulf. The main objective of this study was to report on the evolution of a wind-induced phytopIankton bloom in this region. We used Coastal Zone Color Scanner images taken on 20, 22, 28, and 30 August 1980 to calculate phytoplankton pigment concentration, sea surface temperature and water reflectance fields. We coupled the satellite information with storm track, wind, air temperature, and bright sunshine data. A strong storm blew over the Gulf between 15 and 17 August, triggering upwelling and mixing processes that resumably made high nutrient concentrations available in the euphotic layer. High atmospheric pressure and southwesterly winds between 18 and 25 August allowed air and water temperatures to rise, stabilizing the water column and stimulating phytoplankton growth. A northern storm between 25 and 27 August associated with clear weather and low temperatures between 28 and 30 August, coinciding with the bloom decline. Water-normalized reflectance values suggested that the estuarine region was characterized by diatoms, the western-central GSL by a mixed composition of diatoms/small flagellates/coccolithophorids, and the eastern-central region by coccolithophorids and small flagellates. These blooms may be critical for fish recruitment. Cooling and warming of the water column by meteorological events seem to be intermittent but frequent at this time of year. The resulting nutrient input may support phytoplankton blooms of intensities similar to or higher than those recorded during spring in the western region of the Gulf.©1997 SPIE

GILBERT, D., A.F. VÉZINA, B. PETTIGREW, D.P. SWAIN, P.S. GALBRAITH, L. DEVINE, N. ROY, 1997. État du golfe du Saint-Laurent : conditions océanographiques en 1995. Rapp. tech. can. hydrogr. sci. océan., 191, 113 p .

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We present an overview of the oceanographic conditions in the Gulf of St. Lawrence for 1995. The highlights are that 1) winter air temperatures were near normal in the western Gulf, but were close to 2 °C below normal in the eastern Gulf; 2) the summer was warm and dry in the western Gulf; 3) the ice cover was slightly above normal, with more severe ice conditions in the northeastern Gulf than in the western Gulf; 4) the core temperature of the cold intermediate layer was colder than normal; 5) the bottom area with a temperature below 0 °C reached a record high in the southern Gulf; 6) the deep layers cooled relative to 1994, and the cooling was more intense in he 100-200 m layer (O.9 °C) than in the 200-300m layer (0.3 °C); 7) the dissolved oxygen content of the 200-300 m layer was slightly below the 1981-1995 average in the Cabot Strait and Honguedo Strait sections; 8) the distribution of chlorophyll and nitrate in the surface layer corresponded roughly with the patterns inferred from historical data, i.e. a gradient of decreasing biomass from the West and south towards the east and north that is strongly inversely correlated with salinity; 9) in Northumberland Strait, the concentrations of chlorophyll near the bottom were much higher than elsewhere.

DEVINE, L., C. SAVENKOFF, A.F. VÉZINA, J.-P. CHANUT, S. ROY, L. COMEAU, V. DUBÉ, D. BLASCO, Y. GRATTON, 1997. Compilation des données biologiques et chimiques dans l'estuaire maritime du Saint-Laurent : programme COUPPB 1989, 1990 et 1991. Rapp. stat. can. hydrogr. sci. océan., 150, 103 p .

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To better understand the physical-biological interactions regulating carbon flows in the Lower St. Lawrence Estuary (LSLE), a multidisciplinary program known as COUPPB (COUplage des Processus Physiques et Biogéochimiques; Mesoscale Physical-Biogeochemical Coupling) was carried out in the LSLE from June 1989 to July 1991. This report presents the stations sampled and the variables measured during the five missions. The objective of the first two missions (COUPPB89 : June-July 1989; COUPPB90-1 : June-July 1990) was to extensively sample the area to resolve the mesoscale variations (10-20 km, 5-10 days). The subsequent missions were planned, based on the data from these first missions, to examine the relationships between the different physical, chemical, and biological variables at stations characterized by strongly contrasting hydrodynamic conditions (COUPPB90-2 : September 1990; COUPPB91-1 : May 1991 : COUPPB91-2 : July 1991).

SAVENKOFF, C., A.F. VÉZINA, Y. GRATTON, 1997. Effect of a freshwater pulse on mesoscale circulation and phytoplankton distribution in the lower St. Lawrence Estuary. J. Mar. Res., 5: 353-381 .

RIVKIN, R.B., L. LEGENDRE, D. DEIBEL, J.-E. TREMBLAY, B. KLEIN, K. CROCKER, S. ROY, N. SILVERBERG, C. LOVEJOY, F. MESPLÉ, N. ROMERO, M.R. ANDERSON, P. MATTHEWS, C. SAVENKOFF, A. VÉZINA, J.-C. THERRIAULT, J. WESSON, C. BÉRUBÉ, R.G. INGRAM, 1997. Measuring biogenic carbon flux in the ocean : response. Science (Wash.), 275: 554-555 .

SAVENKOFF, C., A. VÉZINA, Y. GRATTON, 1997. Les courants dans l'estuaire maritime du Saint-Laurent : un casse-tête pour les biologistes?. Naturaliste can., 121(1): 74-76 .

VÉZINA, A.F., S. DEMERS, I. LAURION, T. SIME-NGANDO, S. KIM JUNIPER, L. DEVINE, 1997. Carbon flows through the microbial food web of first-year ice in Resolute Passage (Canadian High Arctic). J. Mar. Syst., 11: 173-189 .

FUENTES-YACO, C., A.F. VÉZINA, P. LAROUCHE, C. VIGNEAU, M. GOSSELIN, M. LEVASSEUR, 1997. Phytoplankton pigment in the Gulf of St. Lawrence, Canada, as determined by the Coastal Zone Color Scanner - Part I : Spatio-temporal variability. Cont. Shelf Res., 17(12): 1421-1439 .

FUENTES-YACO, C., A.F. VÉZINA, P. LAROUCHE, Y. GRATTON, M. GOSSELIN, 1997. Phytoplankton pigment in the Gulf of St. Lawrence, Canada, as determined by the Coastal Zone Color Scanner - Part II : Multivariate analysis. Cont. Shelf Res., 17: 1441-1459 .

SAVENKOFF, C., A. VÉZINA, J.-C. THERRIAULT, 1997. Le cycle du carbone dans le golfe du Saint-Laurent. Nouv. Sci., 8(7): 4-6 .

WEN, Y.H., A. VÉZINA, R.H. PETERS, 1997. Allometric scaling of compartmental fluxes of phosphorus in freshwater algae. Limnol. Oceanogr., 42: 45-56 .

LAFLEUR, C., Y. GRATTON, J.-P. CHANUT, C. SAVENKOFF, A.F. VÉZINA, P. VINET, 1996. Distribution des paramètres océanographiques des eaux de l'estuaire du Saint-Laurent au large de Rimouski (juin-juillet 1990). Rapp. stat. can. sci. halieut. aquat., 981, 130 p .

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This report presents distributions of temperature, salinity, baroclinic currents, suspended particulate material, and dissolved oxygen concentrations obtained during the repeated sampling of closely spaced stations in the lower St. Lawrence Estuary between June 30 and July 9, 1990. The data are presented as a set of cross-estuary vertical sections. Horizontal sections of temperature, salinity, and baroclinic currents at 15 and 40 m depth are also presented. This representation shows the presence of an anticyclonic eddy associated with the passage of a warmer and fresher water mass through the study region. (DBO).

RIVKIN, R.B., L. LEGENDRE, D. DEIBEL, J.-É. TREMBLAY, B. KLEIN, K. CROCKER, S. ROY, N. SILVERBERG, C. LOVEJOY, F. MESPLÉ, N. ROMERO, M.R. ANDERSON, P. MATTHEWS, C. SAVENKOFF, A. VÉZINA, J.-C. THERRIAULT, J. WESSON, C. BÉRUBÉ, R.G. INGRAM, 1996. Vertical flux of biogenic carbon in the ocean : is there food web control?. Science (Wash.), 272: 1163-1166 .

SAVENKOFF, C., A.F. VÉZINA, T.T. PACKARD, N. SILVERBERG, J.-C. THERRIAULT, W. CHEN, C. BÉRUBÉ, A. MUCCI, B. KLEIN, F. MESPLÉ, J.-E. TREMBLAY, L. LEGENDRE, J. WESSON, R.G. INGRAM, 1996. Distributions of oxygen, carbon, and respiratory activity in the deep layer of the Gulf of St. Lawrence and their implications for the carbon cycle. Can. J. Fish. Aquat. Sci., 53: 2451-2465 .

The Gulf of St. Lawrence (GSL) is a semi-enclosed sea with an estuarine circulation forced by runoff from the St. Lawrence and Great Lakes drainage systems and balanced by a deep inflow of oceanic waters through the Laurentian Channel. Based on samples collected between July 1992 and June 1994 during Phase 1 of the CJGOFS program conducted in the Gulf of St. Lawrence, new data are presented on the carbon and nutrient chemistry as well as respiratory activity in the deep waters. Organic carbon fluxes estimated from sediment trap data, deepwater respiratory activity, and benthic respiration measurements are consistent with those obtained from the changes in the dissolved oxygen concentration of the deep waters along the Laurentian Channel. These flux estimates suggest that approximately 10 % of the local primary production reaches the deep layer (> 200 m) and the sediments in the GSL. The vertical carbon budget is almost balanced in the eastern part of the gulf, but approximately half of the carbon produced in the surface layer of the northwestern gulf cannot be accounted for. The difference in hydrodynamic and biological conditions prevailing in both areas may explain the observations.

NOWLIN, W.D., N. SMITH, G. NEEDLER, P.K. TAYLOR, R. WELLER, R. SCHMITT, L. MERLIVAT, A. VÉZINA, A. ALEXIOU, M. McPHADEN, M. WAKATSUCHI, 1996. An ocean observing system for climate. Bull. Amer. Meteorol. Soc., 77: 2243-2273 .

VÉZINA, A.F., 1996. Le changement climatique et la biologie des océans. Pages 79-92 in D. Messier, C. Langlois & C.E. Delisle. La recherche de pointe en biologie : de l'infiniment grand à l'infiniment petit : actes du 20e congrès de l'Association des biologistes du Québec. Université de Montréal (Collection Environnement, 20) .

SIMARD, N., J.-C. THERRIAULT, P. LAROUCHE, A. VÉZINA, J. PLOURDE, J. PERCY, D.A. STEEL, 1996. Données d'océanographie physique et biologique recueillies dans l'est et le nord de la baie d'Hudson et dans le détroit d'Hudson en août et septembre 1993. Rapp. stat. can. sci. halieut. aquat., 978, 199 p .

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This report presents physical and biological oceanograpahic data of the eastern and northern parts of Hudson Basin that were obtained during a sampling mission of 84 stations conducted between 22 August and l5 September l993. A summary table identifies variables measured at each station. The vertical profiles of temperature, salinity, in situ fluorescence, chlorophyll a, particulate organic carbon and nitrogen, and nutrients are presented as well as phytoplankton and zooplankton counts and zooplankton biomass determination. Photosynthetic parameters calculated from P-l curves and estimates of total primary production at the surface are also provided. (DBO).

LAROUCHE, P., C. FUENTES-YACO, A.F. VÉZINA, 1996. Spatio-temporal variability of phytoplankton pigments in the Gulf of St. Lawrence as measured by CZCS. International Archives of Photogrammetry and Remote Sensing, 31(B7): 406-411 .

SAVENKOFF, C., J.-P. CHANUT, A.F. VÉZINA, Y. GRATTON, 1995. Distribution of biological activity in the lower St. Lawrence Estuary as determined by multivariate analysis. Estuar. Coast. Shelf Sci., 40: 647-664 .

SAVENKOFF, C., A.F. VÉZINA, J.-P. CHANUT, Y. GRATTON, 1995. Respiratory activity and CO ₂ production rates of microorganisms in the Lower St. Lawrence Estuary. Cont. Shelf Res., 15: 613-631 .

VÉZINA, A.F., Y. GRATTON, P. VINET, 1995. Mesoscale physical-biological variability during a summer phytoplankton bloom in the lower St. Lawrence Estuary. Estuar. Coast. Shelf Sci., 41: 393-411 .

VÉZINA, A., 1995. Vers un système global de monitorage du climat océanique. Naturaliste can., 119(2): 71-73 .

FUENTES-YACO, C., P. LAROUCHE, A. VÉZINA, C. VIGNEAU, M. GOSSELIN, 1995. Catalogue of phytoplankton pigment images from the Gulf of St. Lawrence : Coastal Zone Color Scanner data from 1979 to 1981. Can. Data Rep. Hydrogr. Ocean Sci., 135, 91 p .

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This catalog presents surface phytoplankton pigments concentrations (chlorophyll a plus phaeophytin) calculated using Coastal Zone Color Scanner (CZCS) images of the St. Lawrence Gulf. The data set consists of 80 images taken between March and September for the years 1979 to 1981.

LAURION, I., S. DEMERS, A.F. VÉZINA, 1995. The microbial food web associated with the ice algal assemblage : biomass and bacterivory of nanoflagellate protozoans in Resolute Passage (High Canadian Arctic). Mar. Ecol. Prog. Ser., 120: 77-87 .

COMEAU, L.A., A.F. VÉZINA, M. BOURGEOIS, S.K. JUNIPER, 1995. Relationship between phytoplankton production and the physical structure of the water column near Cobb Seamount, northeast Pacific. Deep-Sea Res., Part I, 42: 993-1005 .

SAVENKOFF, C., L. COMEAU, A.F. VÉZINA, Y. GRATTON, 1994. Seasonal variation of the biological activity in lower St. Lawrence Estuary. Can. Tech. Rep. Fish. Aquat. Sci., 2006, 22 p .

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Three to four stations located in the Laurentian Trough were investigated six times during four missions. Three missions were conducted during periods of expected maximal biological production according to the seasonal variation in the lower St. Lawrence Estuary. Two missions took place during the principal summer bloom, and one was conducted during a secondary bloom in the fall. The fourth mission occurred during a period of low surface production, following the melting of the ice cover. The physico-chemical and biological characteristics present during all missions distinguished the upwelling region (stations 67 and 26) from the plume region (stations 23 and 95). We generally measured the highest salinities and lowest temperatures in the upwelling region whereas the lowest salinities and the highest temperatures were observed in the plume region. The significant relationships between phytoplankton biomass, surface production, and surface and deep respiration indicated that there was a coupling between the surface biological activity and the aphotic metabolism over a seasonal scale. Different explanations are presented to qualitatively and quantitatively describe the respiration/production budgets during these missions.

VÉZINA, A.F., 1994. Mesoscale variability in nitrogen uptake rates and the f-ratio during a coastal phytoplankton bloom. Limnol. Oceanogr., 39(4): 854-868 .

VÉZINA, A.F., Y. GRATTON, N. NAVARRO, L. DEVINE CASTONGUAY, 1994. Structure thermohaline et biologique de la couche de surface de l'estuaire maritime du Saint-Laurent. II, Juin-juillet 1990. Rapp. stat. can. sci. halieut. aquat., 894(2), 79 p .

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This report presents the vertical profiles of temperature, salinity, in vivo fluorescence, and nitrate concentration that were obtained during a series of oceanographic missions conducting high-resolution sampling in the lower St. Lawrence Estuary between 29 June and 9 July 1990. The 157 profiles that were retained following scrutiny of the data were reduced to six major modes of variation by the method of empirical orthogonal functions. The first three modes, which explain more than 55 % of the total variation, are mapped and show the progression of the dramatic changes in the physical and biological structure taking place between cruises separated by not more than one week. The variations on a quasi-synoptic scale were even more important than anticipated; the processes responsible for these variations will be the subject of future studies.

WEN, H.W., A. VÉZINA, R.H. PETERS, 1994. Phosphorous fluxes in limnetic cladoceran : coupling of allometry and compartmental analysis. Can. J. Fish. Aquat. Sci., 51: 1055-1064 .

VÉZINA, A.F., M.L. PACE, 1994. An inverse model analysis of planktonic food webs in experimental lakes. Can. J. Fish. Aquat. Sci., 51: 2034-2044 .

FUENTES-YACO, C., P. LAROUCHE, A.F. VÉZINA, 1993. Primary production in the Gulf of St. Lawrence : 1979-80, CZCS Imagery. Pages 113-118 in P. Gagnon & N. O'Neil (ed.). Proceedings of the 16th Canadian Symposium on Remote Sensing; 8e Congrès de l'Association québécoise de télédétection, June 7-10, 1993, Sherbrooke (Quebec) .

VÉZINA, A.F., P. VINET, L.D. CASTONGUAY, 1992. Structure thermohaline et biologique de la couche de surface de l'estuaire maritime du Saint-Laurent. I, Juin-juillet 1989. Rapp. stat. can. sci. halieut. aquat., 894(1), 25 p .

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This report presents the vertical profiles of temperature, salinity, in vivo fluorescence, and nitrate concentration that were obtained during a series of cruises conducting high-resolution sampling in the lower St. Lawrence Estuary between 19 June and 14 July 1989. The 255 profiles that were kept following scrutiny of the data were reduced to six major modes of variation by the method of empirical orthogonal functions. The first three modes, which explain more than 55 % of the total variation, are mapped and show the progression of the dramatic changes in the physical and biological structure taking place between cruises separated by not more than one week. The variation on a quasi-synoptic scale were even more important than was anticipated, and the processes responsible for these variations have not yet been elucidated.

MILTON, G.M., R.J. CORNETT, S.J. KRAMER, A. VÉZINA, 1992. The transfer of iodine and technetium from surface waters to sediments. Radiochim. Acta, 58/59: 291-296 .

SIME-NGANDO, T., K. JUNIPER, A. VÉZINA, 1992. Ciliated protozoan communities over Cobb Seamount : increase in biomass and spatial patchiness. Mar. Ecol. Prog. Ser., 89: 37-51 .