Movement and feeding activity of red sea urchins (Strongylocentrotus franciscanus) adjacent to a kelp forest

@article{Mattison1976MovementAF,
  title={Movement and feeding activity of red sea urchins (Strongylocentrotus franciscanus) adjacent to a kelp forest},
  author={J. E. Mattison and Jonathan D. Trent and Alan L. Shanks and T. Akin and John S. Pearse},
  journal={Marine Biology},
  year={1976},
  volume={39},
  pages={25-30}
}
Movement and feeding were studied in a population of red sea urchins, Strongylocentrotus franciscanus (Agassiz, 1863), found within and immediately seaward of a kelp forest offshore from Santa Cruz, California, USA. Mean sea urchin movements varied from 7.5 cm/day inside the kelp forest to over 50 cm/day at 15 and 100 m outside the kelp forest. The percentage of sea urchins feeding decreased from 66% inside the kelp forest to 16 and 15% at 15 and 100 m outside the kelp forest. These data… 
Biology of the Red Sea Urchin , Strongylocentrotus franciscanus , and Its Fishery in California
The California fishery for the red sea urchin, Strongylocentrotus franciscanus. has grown steadily since its inception in 1972, and the maximum annual catch has exceeded 11,000 metric tons. Most of
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  • 2008
-The California fishery for red sea urchins, Strongylocentrotus fran­ ciscanus, has undergone explosive growth in recent years and is approaching full exploitation. Thus, there is considerable
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TLDR
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Dispersion and Food Differences Between Two Populations of the Sea Urchin Strongylocentrotus franciscanus
  • A. Russo
  • Environmental Science, Biology
  • 1979
TLDR
Urchins aggregate in laboratory aquaria when well supplied with food, while those without food tend to be positioned more at random, which tendency toward random dispersal in food-limited areas is due to the increased and apparently random movement of the urchins in their search for food.
Changes in Urchin and Kelp Densities at Anacapa Island, California
TLDR
After limited recruitment in 1984, Macrocystis recruited heavily throughout the study site in 1985, resulting in an extensive kelp bed; the recruitment event was not accompanied by a sharp decline in urchin densities, but resulted in the gradual decline of the kelpBed.
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TLDR
The results underline the role of predatory fishes in reducing herbivory pressure by trophic cascades, reinforcing the evidence that sea urchin escape behaviour may be an important factor in structuring algal communities.
Demographic structure suggests migration of the sea urchin Paracentrotus lividus in a coastal lagoon
TLDR
Analysis of the demographic structure of a population of Paracentrotus lividus living in a coastal Mediterranean lagoon revealed that sea urchin migrations seem to have been caused by food limitation in the former biotope coupled with a shift in diet in young individuals.
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TLDR
Results over one year suggest that although the grazing potential of sea urchins is considerable, little impact was made on kelp beds in the study area.
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TLDR
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Comparative Foraging Behavior of Tropical and Boreal Sea Urchins
Sea urchins are important structuring forces in marine ecosystems. They control the abundance and distribution of algae (Jones and Kain 1967; Dayton 1975; Pearse and Hines 1979) and influence the
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