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Registros recuperados: 131
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A new apparatus for the collection of bottom plankton Marine & Ocean Science
Wickstead, J..
Tipo: Article Palavras-chave: T Technology (General); QH301 Biology.
Ano: 1953 URL: http://sabella.mba.ac.uk/1571/
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A new dredge for collecting burrowing animals Marine & Ocean Science
Forster, G.R..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1953 URL: http://sabella.mba.ac.uk/1555/
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A new quantitative plankton net Marine & Ocean Science
Currie, R.I.; Foxton, P..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1957 URL: http://sabella.mba.ac.uk/1815/
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A note on the barnacle larvae of the Clyde Sea area as sampled by the Hardy Continuous Plankton Recorder Marine & Ocean Science
Barnes, H..
Tipo: Article Palavras-chave: QL Zoology; QH301 Biology.
Ano: 1950 URL: http://sabella.mba.ac.uk/1398/
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A note on the isolation of small marine algae and flagellates for pure cultures Marine & Ocean Science
Droop, M.R..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1954 URL: http://sabella.mba.ac.uk/1617/
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A quantitative method for estimating the periodicity of diatoms Marine & Ocean Science
Abdel Aleem, A..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1949 URL: http://sabella.mba.ac.uk/1385/
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A record of plankton on the echo-sounder Marine & Ocean Science
Cushing, D.H.; Richardson, I.D..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1956 URL: http://sabella.mba.ac.uk/1703/
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A regime shift in the North Sea circa 1988 linked to changes in the North Sea horse mackerel fishery Marine & Ocean Science
Reid, P.C.; Borges, M. de F.; Svendsen, E..
After 1987, Phytoplankton Colour (a visual estimate of chlorophyll) measured on samples taken by the continuous plankton recorder (CPR) in the North Sea increased substantially, both in level and seasonal extent, compared to earlier years since 1946. Many species of phytoplankton and zooplankton showed marked changes in abundance at about the same time. These events coincided with a large increase in catches of the western stock of the horse mackerel (Trachurus trachurus L.) in the northern North Sea reflecting a northerly expansion of the stock along the shelf edge from the Bay of Biscay to the North Sea after 1987. Using a 3D hydrodynamic model, with input from measured wind parameters, monthly transport of oceanic water into the North Sea has been...
Tipo: Article Palavras-chave: SH Aquaculture. Fisheries. Angling; QH301 Biology.
Ano: 2001 URL: http://sabella.mba.ac.uk/1720/
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A statistical study of the variation in vertical plankton hauls, with special reference to the loss of the catch with divided hauls Marine & Ocean Science
Barnes, H..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1949 URL: http://sabella.mba.ac.uk/1365/
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Achievements of the Continuous Plankton Recorder Survey and a vision for its future - Preface. Marine & Ocean Science
Reid, P.C.; Matthews, J.B.L.; Smith, M.A..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 2003 URL: http://sabella.mba.ac.uk/1714/
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An apparatus for the collection of plankton in the immediate vicinity of the sea-bottom Marine & Ocean Science
Bossanyi, J..
Tipo: Article Palavras-chave: T Technology (General); QH301 Biology.
Ano: 1951 URL: http://sabella.mba.ac.uk/1458/
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An increase in snake pipefish (Entelurus aequoreus) in the northeast Atlantic: possible causes and effects Marine & Ocean Science
Johns, DG; Halliday, N.
Climate induced changes in the planktonic community have been reported in the North Atlantic in recent years (Beaugrand et al., 2002), and similar responses has been seen in higher trophic levels (eg fish, Brander et al., 2003). Many of these responses have been identified by the use of the Continuous Plankton Recorder (CPR), and here we discuss recent results from the survey concerning pipefish, numbers of which have increased dramatically around the UK in recent years. This has also been reported in both the scientific and popular press, and anecdotally by many divers. Pipefish are easily recognized, being vermiform with a long slender ‘snout’ and an armoured outer layer, much like an elongated seahorse. This increase has raised many questions, why has...
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 2007 URL: http://sabella.mba.ac.uk/2112/
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An individual-based model of the early life history of mackerel (Scomber scombrus) in the eastern North Atlantic, simulating transport, growth and mortality Marine & Ocean Science
Bartsch, J.; Coombs, S.H..
The main purpose of this paper is to provide the core description of the modelling exercise within the Shelf Edge Advection Mortality And Recruitment (SEAMAR) programme. An individual-based model (IBM) was developed for the prediction of year-to-year survival of the early life-history stages of mackerel (Scomber scombrus) in the eastern North Atlantic. The IBM is one of two components of the model system. The first component is a circulation model to provide physical input data for the IBM. The circulation model is a geographical variant of the HAMburg Shelf Ocean Model (HAMSOM). The second component is the IBM, which is an i-space configuration model in which large numbers of individuals are followed as discrete entities to simulate the transport, growth...
Tipo: Article Palavras-chave: SH Aquaculture. Fisheries. Angling; QH301 Biology.
Ano: 2004 URL: http://sabella.mba.ac.uk/1478/
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An overview of Calanus helgolandicus ecology in European waters Marine & Ocean Science
Bonnet, D.; Richardson, A.; Harris, R.; Hirst, A.; Beaugrand, G.; Edwards, M.; Ceballos, S.; Diekman, R.; Lopez-Urrutia, A.; Valdes, L.; Carlotti, F.; Molinero, J.C.; Weikert, H.; Greve, W.; Lucic, D.; Albania, A.; Yahia, N.D.; Umani, S.F.; Miranda, A.; Santos, A. dos; Cook, K.; Robinson, S.; Puelles, M.L.F. de.
We review current knowledge and understanding of the biology and ecology of the calanoid copepod Calanus helgolandicus in European waters, as well as provide a collaborative synthesis of data from 18 laboratories and 26 sampling stations in areas distributed from the northern North Sea to the Aegean and Levantine Seas. This network of zooplankton time-series stations has enabled us to collect and synthesise seasonal and multi-annual data on abundance, body size, fecundity, hatching success and vertical distribution of C. helgolandicus. An aim was to enable comparison with its congener Calanus finmarchicus, which has been studied intensively as a key component of European and north east Atlantic marine ecosystems. C. finmarchicus is known to over-winter at...
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 2005 URL: http://sabella.mba.ac.uk/1329/
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An overview of plankton ecology in the North Sea Marine & Ocean Science
Johns, D.G.; Reid, P.C..
The purpose of this report is to give an overview of plankton ecology in the North Sea, and the processes that effect it, as derived from current research. The Sir Alister Hardy Foundation has extensive data for the North Sea area, and other sources have also been used to provide information for this report. Shortfalls in current research have also been highlighted. The information contained herein is to be contributed towards an information base for the Strategic Environmental Assessment. The North Sea is an extension of the North Atlantic that has an area of 574,980 km2. The deepest area is off the coast of Norway (660m), with a number of shallow areas, such as the Dogger Bank (15m). The North Sea represents a large source of hydrocarbons that have...
Tipo: Monograph Palavras-chave: QH301 Biology.
Ano: 2001 URL: http://sabella.mba.ac.uk/1745/
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Arctic boreal plankton species in the Northwest Atlantic Marine & Ocean Science
Johns, D.G.; Edwards, M.; Batten, S.D..
The Continuous Plankton Recorder (CPR) survey has sampled regularly in the Northwest Atlantic since the early 1960s. Over the last decade there has been a dramatic increase in the abundance of a number of arctic boreal plankton species, notably Calanus hyperboreus (Kroyer), Calanus glacialis (Jaschnov), and Ceratium arcticum, and a southerly shift of the copepod C. hyperboreus in the CPR survey. In 1998, C. hyperboreus was recorded at its farthest position south in the survey, 39 degrees N, off the Georges Bank shelf edge. Other studies have reported similar parallel biological responses on three trophic levels. During the late 1990s, production of Labrador Sea Water (LSW) has been at a high, a direct response to the phase of the North Atlantic Oscillation...
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 2001 URL: http://sabella.mba.ac.uk/1790/
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Atlantic wide regime shift? Marine & Ocean Science
Reid, P.C..
Tipo: Article Palavras-chave: GE Environmental Sciences; QH301 Biology.
Ano: 2005 URL: http://sabella.mba.ac.uk/1785/
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Biodiversity of North Atlantic and North Sea calanoid copepods Marine & Ocean Science
Beaugrand, G.; Reid, P.C.; Ibanez, F.; Planque, B..
Spatial patterns in pelagic biodiversity are the result of factors acting from a global to a local scale. The global patterns have been studied intensively using taxa such as foraminifera and euphausiids. However, these studies do not allow direct comparisons of neritic and oceanic regions or examination of relationships between local and regional patterns of pelagic diversity. Here we present a map of the diversity of calanoid copepods, a key planktonic group, summarising 40 yr of continuous monthly investigations in the North Atlantic and North Sea. The high number of samples (168 162) allowed mesoscale patterns in diversity to be detected for the first time at an ocean-basin level. Our results demonstrate pronounced local spatial variability in...
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 2000 URL: http://sabella.mba.ac.uk/1727/
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Buoyancy measurements and vertical distribution of eggs of sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) Marine & Ocean Science
Coombs, S.H.; Boyra, G.; Rueda, L.D.; Uriarte, A.; Santos, M.; Conway, D.V.P.; Halliday, N.C..
Measurements were made of the density and settling velocity of eggs of sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus), using a density-gradient column. These results were related to observed vertical distributions of eggs obtained from stratified vertical distribution sampling in the Bay of Biscay. Eggs of both species had slightly positive buoyancy in local seawater throughout most of their development until near hatching, when there was a marked increase in density and they became negatively buoyant. The settling velocity of anchovy eggs, which are shaped as prolate ellipsoids, was close to predictions for spherical particles of equivalent volume. An improved model was developed for prediction of the settling velocity of sardine eggs,...
Tipo: Article Palavras-chave: SH Aquaculture. Fisheries. Angling; QH301 Biology.
Ano: 2004 URL: http://sabella.mba.ac.uk/1491/
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Chlorocruoroporphyrin - a simple method of preparation Marine & Ocean Science
Kennedy, G.Y..
Tipo: Article Palavras-chave: QH301 Biology.
Ano: 1953 URL: http://sabella.mba.ac.uk/1573/
Registros recuperados: 131
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