K. Yatsuya

Publications22
h-index7
Citations167
Highly Influential Citations24
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Seasonal variation of phlorotannin in sargassacean species from the coast of the Sea of Japan
Variations in phlorotannin concentrations among the developmental stages of brown algae have been reported; however, the phlorotannin concentration plasticity associated with fluctuations in… Expand
  • 47
  • 7
Floating period of Sargassacean thalli estimated by the change in density
  • K. Yatsuya
  • Biology
  • Journal of Applied Phycology
  • 1 October 2008
The density (fresh weight/volume) of the detached thalli of four sargassacean species (Myagropsis myagroides, Sargassum horneri, S. patens, S. siliquastrum) was measured weekly to determine their… Expand
  • 29
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Decrease of Abalone Resources with Disappearance of Macroalgal Beds Around the Ojika Islands, Nagasaki, Southwestern Japan
ABSTRACT Because abalone feed mainly on macroalgae, the disappearance of macroalgal beds would have negative effects on abalone. We investigated the relationship between abalone resources and… Expand
  • 9
  • 3
Diet and stable isotope ratios of gut contents and gonad of the sea urchin Anthocidaris crassispina (A. Agassiz) in two different adjacent habitats, the Sargassum area and Corallina area
:Anthocidaris crassispina collected from the Sargassum area and neighboring Corallina area were examined for their diet, and the stable isotope ratios of gonad and gut contents. Sargassum spp. were… Expand
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Annual net production of the five Sargassaceae species in Yoro, western Wakasa Bay, Sea of Japan
Annual net production of the five Sargassaceae species was investigated in Yoro, western Wakasa Bay, Sea of Japan. The Sargassaceae species were collected at a depth of 2.0–2.5 m and subjected to… Expand
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Density, growth and reproduction of the sea urchin Anthocidaris crassispina (A. Agassiz) in two different adjacent habitats, the Sargassum area and Corallina area
: The sea urchin Anthocidaris crassispina (A. Agassiz) is a dominant herbivore on rocky shores in the warm temperate region of Japan. To clarify the relationship between macroalgal community and A.… Expand
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Seasonal changes in dietary composition of the herbivorous fish Kyphosus bigibbus in southwestern Japan
AbstractKyphosus bigibbus is an herbivorous fish, and its relatively large body size and schooling behavior may have a significant effect on macroalgae in southwestern Japan. However, the feeding… Expand
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Seasonal changes in biomass of macrophytes stranded on Yoro Beach along a sargassacean forest in Wakasa Bay, Sea of Japan
Macrophytes stranded on a beach provide food and habitat for many kinds of animals and play important roles in coastal ecosystems. Macrophytes stranded on a sampling beach (56 m long) along a… Expand
  • 8
Techniques for the restoration of Sargassum beds on barren grounds.
2010年7月1日受理(Received on July 1. 2010) Seikai National Fisheries Institute, Fisheries Research Agency, 1551-8 Taira, Nagasaki 851-2213, Japan Abstract : On barren grounds formed after deforestation,… Expand
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Phenology of the kelp Saccharina japonica and its effect on the gonad index of the sea urchin Mesocentrotus nudus across a depth gradient off the Sanriku coast, northeastern Japan
The kelp Saccharina japonica is a dominant seaweed along the Sanriku coast where fisheries for sea urchin and abalone are among the most prosperous in Japan. We investigated the phenology of the kelp… Expand
  • 2