Harvest management - Ecological Applications: Toward a Sustainable World - page 181

Warm temperate
zooplankton

Sub-arctic
zooplankton

1958-1981 1958-1981

1982-1999 1982-1999

low high
abundance

low high
abundance

Plate 11.1 (Fig. 11.1 on page 294) The northerly shift by about 1000 km of zooplankton species typical of warm temperate
conditions in the northeast Atlantic over the last 40 years. The scale represents the relative abundance and species richness
of warm temperate species in samples taken from different geographical locations. By contrast, the colder-water species that
are typical of subarctic conditions have contracted their range. (From Hays et al., 2005.)