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  1. No Access

    Chapter and Conference Paper

    Characteristics of Wave Dissipation and Setup on Coral Reefs Around Tropical Islands

    Conservation and restoration of corals can be a potential nature-based solution for sustainable disaster prevention and mitigation under the threat of sea level rise due to global warming because it may adapti...

    Yoshimitsu Tajima, Hajime Kayanne in Proceedings of the 11th International Conf… (2024)

  2. No Access

    Article

    High abundances of zooxanthellate zoantharians (Palythoa and Zoanthus) at multiple natural analogues: potential model anthozoans?

    Whilst natural analogues for future ocean conditions such as CO2 seeps and enclosed lagoons in coral reef regions have received much recent research attention, most efforts in such locations have focused on the e...

    James Davis Reimer, Sylvain Agostini, Yimnang Golbuu, Ben P. Harvey in Coral Reefs (2023)

  3. Article

    Open Access

    Trajectory to local extinction of an isolated dugong population near Okinawa Island, Japan

    A small animal population becomes extinct owing to demographic and environmental stochasticity after declining below the minimum viable population (MVP). However, the actual process of extinction derived by st...

    Hajime Kayanne, Takeshi Hara, Nobuaki Arai, Hiroya Yamano in Scientific Reports (2022)

  4. No Access

    Article

    Unexpected high abundance of aragonite-forming Nanipora (Octocorallia: Helioporacea) at an acidified volcanic reef in southern Japan

    Nanipora Miyazaki & Reimer, 2015 is a recently discovered genus of aragonite-skeleton producing octocorals closely related to the blue coral genus Heliopora de Blainville, 1830. Since its discovery, Nanipora has ...

    James Davis Reimer, Haruko Kurihara, Timothy Ravasi, Yoichi Ide in Marine Biodiversity (2021)

  5. Article

    Open Access

    Anthropogenic Anoxic History of the Tuvalu Atoll Recorded as Annual Black Bands in Coral

    Atoll islands are small, low-lying and highly vulnerable to sea level rise (SLR). Because these islands are fully composed of the skeletons from coral reef creatures, the healthy coral ecosystem plays a pivota...

    Nobuko Nakamura, Hajime Kayanne, Yoshio Takahashi, Michinari Sunamura in Scientific Reports (2020)

  6. No Access

    Article

    Validation of degree heating weeks as a coral bleaching index in the northwestern Pacific

    Mass bleaching is the most significant threat to coral reefs. The United States National Oceanic and Atmospheric Administration monitors world sea surface temperature (SST) and releases warnings for bleaching ...

    Hajime Kayanne in Coral Reefs (2017)

  7. No Access

    Article

    Shell productivity of the large benthic foraminifer Baculogypsina sphaerulata, based on the population dynamics in a tropical reef environment

    Carbonate production by large benthic foraminifers is sometimes comparable to that of corals and coralline algae, and contributes to sedimentation on reef islands and beaches in the tropical Pacific. Populatio...

    Kazuhiko Fujita, Maki Otomaru, Paeniu Lopati, Takashi Hosono, Hajime Kayanne in Coral Reefs (2016)

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    Book

    Coral Reef Science

    Strategy for Ecosystem Symbiosis and Coexistence with Humans under Multiple Stresses

    Hajime Kayanne in Coral Reefs of the World (2016)

  9. Chapter

    Erratum to: Coral Reefs of the World

    Hajime Kayanne in Coral Reef Science (2016)

  10. No Access

    Chapter

    Response of Coral Reefs to Global Warming

    The atmospheric CO2 crossed over 400 ppm and we must prepare for a “+2 °C world” during this century. Coral reefs are directly related to each scenario of global warming: increase in CO2 results in ocean acidific...

    Hajime Kayanne in Coral Reef Science (2016)

  11. No Access

    Chapter

    Water Circulation in a Fringing Reef and Implications for Coral Distribution and Resilience

    Shiraho Reef, Ishigaki Island, Southwest Japan is characterized by (1) a lack of prominent channels, which causes ponding at low tide, (2) its location in a monsoon area, which causes the dominant wind directi...

    Hiroya Yamano, Hiroshi Hata, Toshihiro Miyajima in Integrative Observations and Assessments (2014)

  12. No Access

    Article

    Spatial community shift from hard to soft corals in acidified water

    Research combining the analysis of coral distribution in volcanically acidified waters with laboratory culture experiments indicates that reef communities may shift from reef-building hard corals to non-reef-b...

    Shihori Inoue, Hajime Kayanne, Shoji Yamamoto, Haruko Kurihara in Nature Climate Change (2013)

  13. Article

    Open Access

    Anthropogenic impacts on water quality of the lagoonal coast of Fongafale Islet, Funafuti Atoll, Tuvalu

    Water pollution, evident by negative values of redox potential in waters, occurs at the lagoonal coast located near the densely populated area of Fongafale Islet on Funafuti Atoll, Tuvalu, Central Pacific. Sed...

    Masafumi Fujita, Jumpei Suzuki, Daisaku Sato, Yuji Kuwahara in Sustainability Science (2013)

  14. No Access

    Article

    Estimating photophysiological condition of endosymbiont-bearing Baculogypsina sphaerulata based on the holobiont color represented in CIE L*a*b* color space

    Symbiont-bearing large benthic foraminifers (LBFs) are widely distributed around coral reefs. If the physiological responses of LBFs to environmental changes can be recognized at an individual level, LBFs coul...

    Takashi Hosono, Kazuhiko Fujita, Hajime Kayanne in Marine Biology (2012)

  15. No Access

    Reference Work Entry In depth

    Sea Level Change and Its Effect on Reef Growth

    Hajime Kayanne in Encyclopedia of Modern Coral Reefs (2011)

  16. No Access

    Article

    Evaluation of spatial correlation between nutrient exchange rates and benthic biota in a reef-flat ecosystem by GIS-assisted flow-tracking

    A Geographic Information System (GIS)-aided flow-tracking technique was adopted to investigate nutrient exchange rates between specific benthic communities and overlying seawater in a fringing reef of Ishigaki...

    Toshihiro Miyajima, Yoshiyuki Tanaka, Isao Koike, Hiroya Yamano in Journal of Oceanography (2007)

  17. No Access

    Article

    Relationship of species composition of tropical seagrass meadows to multiple physical environmental factors

    The purpose of this study was to examine the relationship between species composition of tropical seagrasses and various physical environmental factors: depth, sediment thickness and silt–clay content in the s...

    Yoshiyuki Tanaka, Hajime Kayanne in Ecological Research (2007)

  18. No Access

    Article

    Nitrogen fixation of filamentous cyanobacteria in a coral reef measured using three different methods

    Hajime Kayanne, Masashi Hirota, Masumi Yamamuro, Isao Koike in Coral Reefs (2005)

  19. No Access

    Article

    Achieving High Time-Resolution with a New Flow-through Type Analyzer for Total Inorganic Carbon in Seawater

    A fully automated, continuous-flow-through type analyzer was developed to observe rapid changes in the concentration of total inorganic carbon (CT) in coastal zones. Seawater and an H3PO4 solution were fed into t...

    Hideshi Kimoto, Ken Nozaki, Setsuko Kudo, Ken Kato, Akira Negishi in Analytical Sciences (2002)

  20. No Access

    Chapter

    Impacts on Hydrology/Water Resources and Water Environment

    Though the average annual precipitation in Japan is comparatively high on a global basis, precipitation varies significantly across both time and space. In addition, a steep terrain with short rivers and narro...

    Keisuke Hanaki, Kaoru Takara, Takayuki Hanazato, Hiromaru Hirakuchi in Global Warming (1998)