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Species-richness patterns in space, depth, and time (1989-1999) of the Portuguese fauna sampled by bottom trawl

Published online by Cambridge University Press:  22 June 2006

Pedro Sousa ,
Manuela Azevedo  and
Manuel C. Gomes
Pedro Sousa
Affiliation:
DRM, IPIMAR, Portuguese Institute for Fisheries and Sea Research, Av. de Brasília, 1449-006 Lisbon, Portugal
Manuela Azevedo
Affiliation:
DRM, IPIMAR, Portuguese Institute for Fisheries and Sea Research, Av. de Brasília, 1449-006 Lisbon, Portugal
Manuel C. Gomes
Affiliation:
DBV, Faculty of Sciences, Univ. Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
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Abstract

We have analyzed a series of 22 groundfish surveys conducted between 1989 and 1999 on the Portuguese shelf and upper slope (97 sampling station grid, 36−710 m) in the summer, autumn, and winter, to address the hypotheses of latitudinal and depth trends in species richness (number of species) and whether these patterns changed over time and among seasons. Richness was modelled by means of a Generalized Additive Model (GAM) with significant covariates being latitude and longitude, in a joint-spatial smooth, and depth, chronological time, and season. A decrease in richness was detected along the continental margin, when moving higher in latitude, with lowest richness being found in the shallow northern area. Thus, although our study spanned only about 5 degrees in latitude, we found no exception to the equator-pole latitudinal decrease in richness commonly acknowledged by ecologists. There is no common agreement on the way marine fish species richness varies with depth, yet our findings were consistent for the entire eleven-year period: richness decreases slightly with depth, from the coastline to the shelf break (200−300 m), steadily increasing afterwards down the slope. The patterns of change in latitude and depth persisted in time and among seasons but their magnitude changed. Richness was higher in the winter compared to the other seasons.

Keywords

BiodiversityDepth gradientsGAMGroundfish surveysLatitudinal gradientsSpecies richnessNE Atlantic Ocean
Type
Research Article
Information
Aquatic Living Resources , Volume 19 , Issue 2 , April 2006 , pp. 93 - 103
Copyright
© EDP Sciences, IFREMER, IRD, 2006

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References

Ambar, I., Fiúza, A.F.G., Boyd, T.J., Frouin, R., 1986, Observations of a warm oceanic current flowing northward along the coasts of Portugal and Spain during November-December 1983. EOS Trans. Am. Geophys. Union 67, 1054.
Augustin, N.H., Borchers, D.L., Clarke, E.D., Buckland, S.T., Walsh, M., 1998, Spatiotemporal modelling for the annual egg production method of stock assessment using generalized additive models. Can. J. Fish. Aquat. Sci. 55, 2608-2621. CrossRef
Austin, M.P., 2002, Spatial prediction of species distribution: an interface between ecological theory and statistical modelling. Ecol. Model. 157, 101-118. CrossRef
Blanchard, F., 2001, Une approche de la dynamique des peuplements de poissons démersaux exploités: analyse comparée de la diversité spécifique dans le golfe de Gascogne (océan Atlantique) et dans le golfe du Lion (mer Méditerranée). Aquat. Living Resour. 14, 29-40. CrossRef
Cardador F., Sanchéz F., Pereiro F.J., Borges M.F., Caramelo A.M., Azevedo M., Silva A., Pérez N., Martins M.M., Olaso I., Pestana G., Trujillo V., Fernandez A., 1997, Groundfish surveys in the Atlantic Iberian waters (ICES divisions VIIIc and IXa): history and perspectives. ICES CM 1997/Y:8, p. 29.
Colloca, F., Cardinale, M., Belluscio, A., Ardizzone, G., 2003, Pattern of distribution and diversity of demersal assemblages in the central Mediterranean sea. Estuar. Coast. Shelf Sci. 56, 469-480. CrossRef
Cunha M.E., 2001, Physical control of biological processes in a coastal upwelling system: comparison of the effects of coastal topography, river run-off and physical oceanography in the Northern and Southern parts of the western Portuguese coastal waters. PhD thesis, FCL, Lisboa.
Edwards P.J., May R.M., Webb N.R. (Eds.), 1994, Large-scale ecology and conservation biology. Blackwell Science.
Flach, E., Bruin, W.D., 1999, Diversity patterns of macrobenthos across a continental slope in the NE Atlantic. J. Sea Res. 42, 303-323. CrossRef
Fiúza A.F., 1982, The Portuguese upwelling system. Actual problems of oceanography in Portugal, pp. 45-71. Seminar, Lisbon, 20-21 Nov. 1980, Junta Nacional de Investigação Científica e Tecnológica – NATO Marine Sciences Panel.
Fock, H., Uiblein, F., Köster, F., von Westernhagen, H., 2002, Biodiversity and species-environment relationships of the demersal fish assemblage at the Great Meteor Seamount (subtropical NE Atlantic), sampled by different trawls. Mar. Biol. 141, 185-199.
Frescino, T.S., Edward, T.C. Jr., Moisen, G.G., 2001, Modelling spatially explicit forest structural attributes using generalized additive models. J. Veg. Sci. 12, 15-26. CrossRef
Fulton, E.A., Smith, A.D.M., Punt, A.E., 2005, Which ecological indicators can robustly detect effects of fishing? ICES J. Mar. Sci. 62, 540-551.
Gray, J., 2001, Marine diversity: the paradigms in patterns of species richness examined. Sci. Mar. 65 (Suppl. 2), 41-56. CrossRef
Guisan, A., Edward, T.C. Jr., Hastie, T., 2002, Generalized linear and generalized additive models in studies of species distributions: setting the scene. Ecol. Model. 157, 89-100. CrossRef
Haedrich, R., Rowe, G.T., Polloni, P.T., 1975, Zonation and faunal composition of epibenthic populations on the continental slope south of New England. J. Mar. Sci. 33, 191-212.
Haedrich, R.L., Rowe, G.T., Polloni, P.T., 1980, The megabenthic fauna in the deep sea south of New England, USA. Mar. Biol. 57, 165-179. CrossRef
Hastie T.J., Tibshirani R.J., 1990, Generalized Additive Models. Chapman & Hall.
Hawksworth D.L. (ed.), 1995, Biodiversity. Measurement and Estimation. Chapman & Hall.
Jinao, S., Yanhong, C., 1989, On the demersal fish communities of the East China Sea. Chin. J. Oceanol. Limnol. 7, 159-168. CrossRef
Koslow, J.A., Williams, A., Paxton, J.R., 1997, How many demersal fish species in the deep sea? A test of a method to extrapolate from local to global diversity. Biodiversity Conserv. 6, 1523-1532. CrossRef
Kunin W.E., Lawton J.H., 1996, Does biodiversity matter? Evaluating the case for conserving species. In: Gaston K. J. (Ed.). Biodiversity. A Biology of Numbers and Difference, Blackwell Science, pp. 283-307.
Labropoulou, M., Papaconstantinou, C., 2004, Community structure and diversity of demersal fish assemblages: the role of fishery. Sci. Mar. 68 (Suppl. 1), 215-226. CrossRef
Lehmann, A., Leathwick, J.R., Overton, J.McC., 2002a, Assessing New Zealand fern diversity from spatial predictions of species assemblages. Biodiversity Conserv. 11, 2217-2238. CrossRef
Lehmann, A., Overton, J.McC., Leathwick, J.R., 2002b, GRASP: generalized regression analysis and spatial prediction. Ecol. Model. 157, 189-207. CrossRef
Lobry, J., Gascuel, D., Domain, F., 2003, La biodiversité spécifique des ressources démersales du plateau continental guinéen : utilisation d'indices classiques pour un diagnostic sur l'évolution de l'écosystème. Aquat. Living Resour. 16, 59-68. CrossRef
Macpherson, E., 2002, Large-scale species-richness gradients in the Atlantic Ocean. Proc. R. Soc. Lond. B 269, 1715-1720. CrossRef
Macpherson, E., Duarte, C.M., 1994, Patterns in species richness, size and latitudinal range of East Atlantic Fishes. Ecography 17, 242-248. CrossRef
Magnussen, E., 2002, Demersal fish assemblages of Faroe Bank: species composition, distribution, biomass spectrum and diversity. Mar. Ecol. Prog. Ser. 238, 211-225. CrossRef
Magurran A.E., 1988, Ecological Diversity and Its Measurement. Princeton University Press. Princeton, New Jersey.
McCullagh, P., Nelder, J.A., 1989, Generalized Linear Models. Chapman & Hall. Mueter F.J., Norcross B.L., 2002, Spatial and temporal patterns in the demersal fish community on the shelf and upper slope regions of the Gulf of Alaska. Fish. Bull. 100, 559-581.
Paz, J., Casas, J.M., 1996, Zonation and associations of dominant fish fauna on Flemish Cap. NAFO Sci. Counc. Stud. 25, 67-75.
Perrings C., Mäller K.-G., Folke C., Holling C.S., Jansson B.-O. (Eds.), 1995, Biodiversity loss. Economic and ecological issues. Cambridge University Press.
Parsons T.R., Takahashi M., Hargrave B., 1984, Biological oceanographic processes. Pergamon Press.
Peliz, A., Dubert, J., Santos, A.M.P., Oliveira, P.B., Le Cann, B., 2005, Winter upper ocean circulation in the Western Iberian Basic – Fronts, Eddies and Poleward Flows: an overview. Deep-Sea Res. I 52, 621-646. CrossRef
Peliz, A., Rosa, T., Santos, A.M.P., Pissarra, J., 2002, Fronts, jets and counter-flows in the Western Iberia Upwelling System. J. Mar. Syst. 35, 61-77. CrossRef
Poore, G.C.B., Wilson, G.D.F., 1993, Marine species richness. Nature 361, 597-598. CrossRef
Price, A.R.G., 2002, Simultaneous “hotspots” and “coldspots” of marine biodiversity and implications for global conservation. Mar. Ecol. Prog. Ser. 241, 23-27. CrossRef
R Development Core Team, 2005, R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org.
Rowe G.T., 1981, The deep sea ecosystem. In: Longhurst A.R. (Ed.). Analysis of Marine Ecosystems, Academic Press, pp. 235-267.
Rowe, G.T., Menzies, R.J., 1969, Zonation of large benthic invertebrates in the deep sea off the Carolinas. Deep-Sea Res. 16, 531-581.
Santos, M.A., Kazmin, A.S., Peliz, A., 2005, Decadal changes in the Canary upwelling system as revealed by satellite observations: Their impact on productivity. J. Mar. Res. 63, 359-379. CrossRef
Schwinghamer, P., 1981, Characteristic size distributions of integral benthic communities. Can. J. Fish. Aquat. Sci. 38, 1255-1263. CrossRef
Sousa, P., Azevedo, M., Gomes, M.C., 2005, Demersal assemblages off Portugal: mapping, seasonal, and temporal patterns. Fish. Res. 75, 120-137. CrossRef
Stratoudakis, Y., Bernal, M., Borchers, D.L., Borges, M.F., 2003, Changes in the distribution of sardine eggs and larvae off Portugal, 1985-2000. Fish. Oceanogr. 12, 1-12. CrossRef
Venables, W.N., Dichmont, C.M., 2004, GLMs, GAMs and GLMMs: an overview of theory for applications in fisheries research. Fish. Res. 70, 319-337. CrossRef
Willig, M.R., Kaufman, D.M., Stevens, R.D., 2003, Latitudinal gradients of biodiversity: patterns, process, scale, and synthesis. Ann. Rev. Ecol. Evol. Syst. 34, 273-309. CrossRef
Wood S.N., 2001, mgcv: GAMs and Generalized Ridge Regression for R. R News 1(2), 20-25.
Wood S.N., 2004, Low rank scale invariant tensor product smooths for generalized additive mixed models. Tech. Rep. 04-13. Depart. Statistics, University of Glasgow.