The Plankton of the Sea |
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Pagina 92
In this genus there is a spiral shell with a left-handed turn, and the winged feet
protrude from the shell-opening allowing swimming strokes to be made which
paddle the body along on a spiral course. Limacina helicina is found in Arctic
seas ...
In this genus there is a spiral shell with a left-handed turn, and the winged feet
protrude from the shell-opening allowing swimming strokes to be made which
paddle the body along on a spiral course. Limacina helicina is found in Arctic
seas ...
Pagina 98
Most are small, active, and free-swimming, although there are numerous parasitic
species to which this does not apply. The body is usually elongated, segmented,
without a shell-forming fold of skin and with double-branched swimming feet.
Most are small, active, and free-swimming, although there are numerous parasitic
species to which this does not apply. The body is usually elongated, segmented,
without a shell-forming fold of skin and with double-branched swimming feet.
Pagina 177
In one, the animal swims towards or away from a source of light at a constant
speed; in the other, the speed of swimming is related to the intensity of light. How
these methods interact or whether they interact at times so as to produce what ...
In one, the animal swims towards or away from a source of light at a constant
speed; in the other, the speed of swimming is related to the intensity of light. How
these methods interact or whether they interact at times so as to produce what ...
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Indice
PREFACE page | 13 |
THE FIELDS OF THE SEA | 43 |
THE ANIMAL PLANKTON | 66 |
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adult Algae algal amphipod Antapical Antarctic Appendicularia Arctic arrow worm auxospore Biddulphia biol Biological body bottom Calanus Calanus finmarchicus called carbon cells Ceratium Chaetoceros Chaetognatha ciliated Cleve coast coastal copepods Coscinodiscus Crustacea deep water depth diameter diatoms distribution Dorsal eggs Ehbg elegans euphausid Expedition female Figure fish Fisheries flagellated floating G. O. Sars genera genus gonozooid growth Grun hauled Hensen individuals jelly-fish Laboratory larva latitudes latter layer light living lower marine medusa mentioned mouth Mysidae neritic North Atlantic North Sea Norwegian Sea number of species nutrients occur oceanic organic matter oxygen parasite pelagic peridinians Peridinium photophores photosynthesis phyto phytoplankton plankton plankton organisms plants Plate polyp population produced Rhizosolenia round Sagitta samples Sars sea water seasonal segments shell shrimps spores stage standing crop stations Steemann Nielsen surface water swimming temperature thoracic Thysanoessa tion tropical tube Ventral vertical warmer zone zooplankton
Informazioni bibliografiche
| Titolo | The Plankton of the Sea |
| Autore | R. S. Wimpenny |
| Editore | American Elsevier Publishing Company, 1966 |
| Provenienza dell'originale | la University of California |
| Digitalizzato | 14 lug 2009 |
| Lunghezza | 426 pagine |
| Esporta citazione | BiBTeX EndNote RefMan |