Keywords
Pacific
Costa Rica
Golfo Dulce
El Niño
abundance
composition Cnidaria
zooplancton gelatinoso
Pacífico
Costa Rica
El Niño
abundancia
composición
How to Cite
Abstract
Gelatinous zooplankton in the Golfo Dulce, Pacific coast of Costa Rica during transition from rainy season to dry season 1997-1998. Gelatinous zooplankton was studied in Golfo Dulce, Pacific coast of Costa Rica during December 1997 and February 1998. Six representative sampling stations were selected and a Niskin bottle was used to collect water and measure temperature, salinity and dissolved oxygen in the water column, every 10 m from the surface to 100 m depth. Zooplankton was collected with a zooplankton net (0.50 m diameter and 500 μm mesh size) with a close-open system in its mouth. Sampling included a hauling in the upper layer, another in or thru the thermocline, and another below the thermocline. Samples were fixed in 4 % formaldehyde; biomass was determinated through the biovolume technique. A picnocline was not found during the study, but strong gradients were detected in the inner station GD02B (oxygen) and the outer station GD11A (temperature and oxygen), with salinity changes in all stations between January and February 1998. We found 41 species of gelatinous zooplankton (33 species of cnidarians, two ctenophores and six thalaceans). Inner and outer stations were clearly different on December but not on February. Abundance and diversity increased from December to February in all stations, while there was a decrease from the month to the inner part of the Gulf for all months. An impact of El Niño was apparent in this community. Rev. Biol. Trop. 54 (Suppl. 1): 201-223. Epub 2006 Sept. 30.References
Alvariño, A. 1991. Abundancia y distribución batimétrica diurna y nocturna de los sifonóforos durante cuatro estaciones del año 1969 en aguas de California y Baja California. Inv. Mar. CICIMAR 6: 1-37.
Bathmann, U. 1988. Mass ocurrence of Salpa fusiformis in the spring of 1984 off Irland: implications for sedimentation processes. Mar. Biol. 97: 127-135.
Boltovskoy, D. 1981. Atlas del zooplancton del Atlántico sudoccidental y métodos de trabajo con el zooplancton marino. INIDEP, Mar del Plata, Argentina.
Córdoba, R. & J.A. Vargas. 1996. Temperature, salinity, oxygen and nutrient profiles at a 200 m deep station in Golfo Dulce, Pacific coast of Costa Rica. Rev. Biol. Trop. 44 (Supl.3): 233-236.
Cortés, J. 1990. The coral reef of Golfo Dulce, Costa Rica: distribution and community strucrure. Atoll. Res. Bull. 344: 1-37.
Costello, J.H., R. Loftus & R. Wagget. 1999. Influence prey detection on capture success for the ctenophore Mnemiopsis leidyi feeding upon adult of Acartia tonsa and Oithona colcarva copepods. Mar. Ecol. Prog. Ser. 191: 217-232.
Cushing, D.H. 1980. Marine Ecology and Fisheries. Cambridge University, Reino Unido. 278 p.
Dalsgaard, T., D.E. Canfield, J. Petersen, B. Thamdrup & J. Acuña-González. 2003. N2 production by the anammox reaction in the anoxic water column of Golfo Dulce, Costa Rica. Nature 422: 606-608.
Fagetti, E. 1973. Medusas de aguas chilenas. Rev. Biol. Mar. 15: 385-401.
Gasca, R. & E. Suárez. 1992. Sifonóforos (Cnidaria: Siphonophora) del Domo de Costa Rica. Rev. Biol. Trop. 40: 125-130.
Gili, J.M., F. Pagès, A. Sabatés & J.D. Ros. 1988. Smallscale distribution of a cnidarian population in the western Mediterranean. J. Plankton Res. 10: 385-401.
Greve, W. 1994. The 1989 German Bight invasion of Muggiaea atlantica. ICES J. Mar. Sci. 51: 355-358.
Hartmann, H.J. 1994. The Golfo Dulce marine environment: Review and critical assessment. University of La Rochelle, Francia. 34 p.
Herrera, W. 1985. Clima de Costa Rica. Universidad Estatal a Distancia, San José, Costa Rica, 230 p.
Hossfeld, B. 1996. Distribution and biomass of arrow worms (Chaetognatha) in Golfo de Nicoya and Golfo Dulce, Costa Rica. Rev. Biol. Trop. 44 (Supl.3): 157-172.
Jacobs, J. 1996. Zur Ökologie und Biometrie pelascher Ostracoden im Golfo Dulce (Costa Rica). M.Sc. Thesis, Freie Universität Berlin, Alemania. 114p.
Larson, R.J. 1986. Water content, organic content, and carbon and nitrogen composition of medusae from the northeast pacific. J. Exp. Biol. Ecol. 99: 107-120.
Larson, R.J. 1987. Trophic ecology of planktonic gelatinous predators in Saanich Inlet, British Columbia: diets and prey selection. J. Plankton Res. 9: 811-820.
Latif, M. 1998. El Niño/Southern Oscillation. Physikalische Blätter. 54: 525-528.
Lenz, J. 2000. Introduction, p.1-32. In R.P. Harris, P.H. Wiebe, J. Lenz, H.R. Skjoldal & M. Huntlez (eds.). Zooplankton Methodology Manual. Academic, Londres, Inglaterra.
Mills, C.E. 1984. Density is altered in hydromedusae and ctenophores inresponse to changes in salinity. Biol. Bull. 166: 206-215.
Mills, C.E. 1995. Meduase, shiphonophores and ctenophores as planktivorous predators in changing global ecosystems. ICES J.Mar. Sci. 52: 575-581.
Palma, S. 1994. Distribución del macrozooplancton gelatinoso en un área de desove de peces frente a la costa central de Chile (32°-33°S). Rev. Biol. Mar. 29: 23-45.
Pagès, F., J.M. Gili & J. Bouillon. 1992. Planktonic cnidarians of the Benguela current. Sci. Mar. 56: 144.
Pagès, F. & F. Kurbjeweit. 1994. Vertical distribution and abundance of mesoplanktonic medusae and siphonophores fromWeddel Sea, Antartica. Polar Biol. 14: 243-251.
Postel, L., H. Fock & W. Hagen. 2000. Biomass and abundance. In R.P. Harris, P.H. Wiebe, J. Zenz, H.R. Skjoldal & M. Huntley (eds.). Zooplancton Methodology Manual. Academic, Londres, Inglaterra. 83-192.
Purcell, J.E. 1989. Predation by the hydromedusa Aequorea victoria on fish larvae and eggs at a herring spawning ground in British Columbia. Can. J. Fish Aquat. Sci. 46: 1415-1427.
Purcell, J.E. 1992. Effects of predation by the scyphomedusan Chrysaora quinquecirrha on zooplankton population in Chesapeake Bay. Mar. Ecol. Prog. Ser. 87: 65-76.
Quesada-Alpízar, M.A. & A. Morales-Ramírez. 2004. Comportamiento de las masas de agua en el Golfo Dulce, Costa Rica durante El Niño (1997-1998). Rev. Biol. Trop. 52 (Supl.2): 95-103.
Raymont, J.E.G. 1983. Plankton and productivity in the Oceans. Vol. II. Zooplankton. Pergamon, Reino Unido. 824 p.
Richards, F.A., J.J. Anderson & J.D. Cline. 1971. Chemical and physical observations in Golfo Dulce, an anoxic basin on the Pacific coast of Costa Rica. Limnol. Oceanogr. 16: 43-50.
Schneider, G. 1987. Role of the advection in the distribution and abundance of Pleurobrachia pileus in the Kiel Bight. Mar. Ecol. Prog. Ser. 41: 99-102.
Schneider, G. 1989. Carbon and nitrogen content of marine zooplankton dry material: a short review. Plankton Newsletter 11: 4-7.
Sabatès, A., J.M. Gili & F. Pagès. 1989. Relationship between zooplankton distribution, geographic characteristics and hydrographic pattern off the Catalan coast (Western mediterraneo). Mar. Biol. 103: 153-159.
Segura-Puertas, L. 1991. Medusa (Cnidaria: Hydrozoa y Scyphozoa) de la región del Domo de Costa Rica. Rev. Biol. Trop. 39: 159-163.
Segura-Puertas, L. 1992. Medusae (Cnidaria) from the Yucatan shelf and mexican Caribean. Bull. Mar. Sci. 51: 353-359.
Sommer, U. 1994. Planktologie. Springer, Alemania. 248 p. Suárez, E. & R. Gasca. 1991. Sifonóforos de méxico. Biología y Ecología. Centro de Investigaciones de Quintaño Roo, México. 155 p.
Suthers, I.M. & K.T. Frank. 1990. Zooplankton biomass gradient off south-western Nova Scotia: nearshores ctenophore predation or hydrographic separation? J. Plankton Res. 12: 831-850.
Svendsen, H., R. Rosland, S. Myking, J.A. Vargas, O.G. Lizano & E. J. Alfaro. 2006. A physical-oceanographic study of Golfo Dulce, Costa Rica. Rev. Biol. Trop. 54 (Supl. 1): 000-000.
Swanberg, N., U. Bamstedt & L.P. Madin. 1990. Assessig the role of gelatinous zooplankton in the marine environment: a critique. In ICES Meeting of the Inter. Council Explor. Sea, Session V. 11 p.
Thamdrup, B., D.E. Canfield, T.G. Ferdelmann, R.N. Glud & J.K. Gundersen. 1996. A biogeochemical survey of the anoxic basin Golfo Dulce, Costa Rica. Rev. Biol. Trop. 44 (Supl. 3): 19-33.
Todd, C.D. & M.S. Laverack. 1991. Coastal Marine Zooplankton. A practical manual for students. Cambridge University, Reino Unido. 106 p.
von Wangelin, M. & M. Wolff. 1996. Comparative biomass spectra and species composition of zooplankton communities in Golfo Dulce and Golfo Nicoya, Pacific coast of Costa Rica. Rev. Biol. Trop. 44 (Supl. 3): 135-155.
Wolff, M. & J.A. Vargas (eds.). 1994. RV Victor Hensen Costa Rica Expedition 1993/1994. Cruise Report. Zentrum für Marine Tropenökologie (ZMT) Contribution 2. Bremen, Alemania. 109 p.
Zeldis, J.R., C.S. Davis, M.R. James, S.L. Ballara, W.E. Booth & F.H. Chang. 1995. Salp grazing: effects on phytoplankton abundance, vertical distribution and taxonomic composition in a coastal habitat. Mar. Ecol. Prog. Ser. 126: 267-283.
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