Deep-Sea Species Diversity: Decreased Gastropod Diversity at Abyssal Depths

@article{Rex1973DeepSeaSD,
  title={Deep-Sea Species Diversity: Decreased Gastropod Diversity at Abyssal Depths},
  author={Michael Rex},
  journal={Science},
  year={1973},
  volume={181},
  pages={1051 - 1053}
}
  • M. Rex
  • Published 14 September 1973
  • Geology, Medicine
  • Science
Gastropod species diversity is low on the continental shelf, high on the continental slope and abyssal rise, and then decreases with increasing distance out onto the abyssal plain. Increased diversity below the continental shelf has been attributed to increased environmental stability. Decreased diversity on the abyss may result from extremely low productivity. 

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References

SHOWING 1-10 OF 13 REFERENCES
Species Diversity: Benthonic Foraminifera in Western North Atlantic
TLDR
Diversity peaks occur at abyssal depths of greater than 2500 meters and 100 to 200 meters and the peak at 35 to 45 meters is due to species equitability, whereas the other two peaks correspond to an increase in the number of species.
Marine Benthic Diversity: A Comparative Study
TLDR
A within-habitat analysis was made of the bivalve and polychaete components of soft-bottom marine faunas which differed in latitude, depth, temperature, and salinity, and it was indicated that species number is the more valid diversity measurement.
The Ecological Regulation of Species Diversity
TLDR
The hypothesis that the tropics are closer to equilibrium while the temperate zone is in a "successional" state of development of diversity is not accepted, for theoretical reasons and for lack of evidence.
PATTERNS OF SPECIES DIVERSITY
TLDR
Changes in the pattern of species diversity can be compared with changes in the environment and the information theory formulae can also be used to measure habitat diversity and differences between communities or habitats.
Diversity: A Sampling Study
  • E. Fager
  • Mathematics
    The American Naturalist
  • 1972
The rarefaction method proposed by Sanders (1968) to allow one to compare the diversity of samples composed of different numbers of individuals and species is compared with the results that would be
An Index of Diversity and the Relation of Certain Concepts to Diversity
TLDR
The uses in ecology of the terms richness, diversity, homogeneity, and similarity are considered in the context of recent studies of plant and animal communities and an index of diversity derived from the distance measure of similarity is suggested.
The Nonconcept of Species Diversity: A Critique and Alternative Parameters.
TLDR
It is suggested that species diversity has become a meaningless concept, that the term be abandoned, and that ecologists take a more critical approach to species-number relations and rely less on information theoretic and other analogies.
Homage to Santa Rosalia or Why Are There So Many Kinds of Animals?
TLDR
The address of the president of a society, founded largely to further the study of evolution, at the close of the year that marks the centenary of Darwin and Wallace's initial presentation of the theory of natural selection.
Measurement of Diversity
THE ‘characteristic’ defined by Yule1 and the ‘index of diversity’ defined by Fisher2 are two measures of the degree of concentration or diversity achieved when the individuals of a population are
and R
  • R. Hessler, Science 163,
  • 1419
...
1
2
...