By Siebrecht van der Spoel, Robert Pieter Heyman (auth.)
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Extra resources for A Comparative Atlas of Zooplankton: Biological Patterns in the Oceans
A more synoptic sampling than represented in the figs 40 to 42, such as that of Desmopterus papilio (figs 43 & 44), also shows a very patchy pattern. The distributions ofthe patches in the two figures differ strongly, due to climatological changes. 44 are most clear in upwelling and equatorial areas where currents reverse under the monsoon influence (cf. also fig. 17). Not only the patchiness of a distribution, but also the extreme borders of occurrence are a result of seasonal influences. 40).
78), the Calanus helgolandicus (fig. 79) and the Limacina helicina (fig. 8z) speciesgroups, are less complicated. Pacific and two Southern Ocean taxa. In groups with high Arctic taxa, one of the two Atlantic, and one of the two Pacific representatives are replaced by one Arctic taxon, Calanus glacialis (fig. 78) is such a replacing taxon. ~---r--~--+---~~~40 ~--~--+---~~---+--~--~--4---+---~-4---+---r--~--+---r-~---+---r--~ 60 58 Distribution of the species-group Euealanus hyalinus. inermis. 59 Distribution ofthe genus Peraelis (see also fig.
Longicorne 'N. indicus. 67 Distribution ofthe Stylocheiron affine group. Equatorial form'. d+H~"--"" 0 ~~~~~~~~~~20 ~--+-~~~~+--4--~--+-~--~--+--+--~--r-~--~--r--+--~--r-~60 ~~~~~~~~-4--~--+--+--~--r--+--~--~-+--~~~r--+--~--r-~80 ~~~DO~~~~~od~~du~~oU~~~~~~~~~S 53 Boundaries and barriers Though their numbers are few in the oceans, so me isolating barriers can be indicated; the continents, divergences and convergences are the most clear-cut ones. Other boundaries and barriers can only be detected and described as places where one or more taxa have their borders of distribution.
A Comparative Atlas of Zooplankton: Biological Patterns in the Oceans by Siebrecht van der Spoel, Robert Pieter Heyman (auth.)