Published Papers - HARII Saki

Mineral Components of Scleractinian Coral Skeletons Cultured Without Symbionts

Motai S.

Journal of Geophysical Research: Biogeosciences ( Journal of Geophysical Research: Biogeosciences )  127 ( 2 )   2022.02 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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Skeletons of contemporary reef-building scleractinian corals are formed of aragonite, a polymorph of the calcium carbonate (CaCO3), notwithstanding calcite being a more stable phase under the condition of coral habitats. Circumstances developing aragonite in coral calcification have been addressed currently. Considering that the symbiotic relationship between the coral host and dinoflagellate algae (zooxanthellae) is perhaps relevant to coral calcification, we studied the impact of these symbiotic relationships on CaCO3 polymorph selection. Juvenile scleractinian corals (Acropora tenuis and Acropora digitifera) absent symbionts were cultured in seawaters with varied Mg/Ca molar ratios (mMg/Ca), and the mineral phases of the skeletons were detected employing X-ray diffraction. The findings revealed that diminutive quantities of calcite precipitated as coral skeleton in Acropora digitifera surprisingly in pseudo-present seawater (mMg/Ca similar to 5). Additionally, coral developed skeletons from only calcite in seawater with an mMg/Ca < 1. The evidence gathered in this investigation suggests that the symbiotic relationship affects the establishment of aragonite skeletons in the course of coral calcification.

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A coral spawning calendar for Sesoko Station, Okinawa, Japan

Baird Andrew H., Edwards Alasdair J., Guest James R., Harii Saki, Hatta Masayuki, Lachs Liam, Mera Hanaka, Sinniger Frederic, Abrego David, Ben-Zvi Or, Bronstein Omri, Cabaitan Patrick C., Cumbo Vivian R., Eyal Gal, Eyal-Shaham Lee, Feldman Bar, Figueiredo Joana, Flot Jean-François, Grinblat Mila, Heyward Andrew, Hidaka Michio, Hirose Mamiko, Iguchi Akira, Isomura Naoko, Kinzie Robert A., Kitanobo Seiya, Kuba Alyson, Levy Oren, Loya Yossi, Mezaki Takuma, Mohamed Amin R., Morita Masaya, Nojima Satoshi, Nozawa Yoko, Prasetia Rian, Puill-Stephan Eneour, Ramirez-Portilla Catalina, Rapuano Hanna, Rosenberg Yaeli, Sakai Yusuke, Sakai Kazuhiko, Shlesinger Tom, Terraneo Tullia I., Yakovleva Irina, Yamamoto Hiromi H., Yamazato Kiyoshi

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 41 - 49   2022.01

Type of publication: Research paper (scientific journal)

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<p>Sesoko Station, Okinawa, has been the site of many significant advances in coral reproductive research and it continues to be a preferred destination for both Japanese and international researchers. Consequently, there are decades of spawning observations, which we present and explore here with the aim of making it easier to predict when species spawn at Sesoko Station. The data include over 700 spawning observations from 87 species of reef-building hermatypic corals. Almost all spawning occurred between dusk and dawn, with most spawning activity concentrated in the 2 to 4 hours after sunset. Some phylogenetic patterns were evident: most <i>Acropora</i> species spawn on or around the 6^th full moon after December 21^st (the northern hemisphere winter solstice); spawning in common species of merulinids and <i>Porites</i> appears to be concentrated around the 7^th full moon and spawning in the fungiids around the 8^th and subsequent full moons. The night of peak spawning with respect to the night of the full moon varied considerably among years in common <i>Acropora</i> species, but was dependent on the calendar date of the full moon in May or June. Therefore, despite an extended spawning season of over three months and considerable variation in the calendar date of spawning in many species among years, the month and night of spawning are reasonably predictable for many species enhancing the value of Sesoko Station as a site for coral reproductive research.</p>

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Overview of the mesophotic coral ecosystems around Sesoko Island, Okinawa, Japan

Sinniger Frederic, Albelda Ritzelle L., Prasetia Rian, Rouzé Héloïse, Sitorus Erlangga D., Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 69 - 76   2022.01

Type of publication: Research paper (scientific journal)

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<p>Coral reef ecosystems extend beyond the standard SCUBA diving depth. These ecosystems found between approximately 30 and over 150 m are referred to as mesophotic coral ecosystems (MCEs). Mesophotic coral communities have already been reported from Okinawa over 50 years ago. However, since then little additional knowledge has been obtained on the distribution and diversity of mesophotic corals in the region. Here, we provide an overview of the coral communities observed at selected sites in the region around Sesoko Island. Using photo-quadrats, we surveyed coral communities and specifically the contribution of the dominant coral genera to the total coral cover between different sites at depths ranging from 30 to 80 m. We found that deep coral communities around Sesoko Island hold a high potential biodiversity and need to be taken into account into coastal management plans.</p>

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Long-term trends and seasonal variations in environmental conditions in Sesoko Island, Okinawa, Japan

Singh Tanya, Sinniger Frederic, Nakano Yoshikatsu, Nakamura Shigeo, Kadena Shouhei, Jinza Mori, Fujimura Hiroyuki, Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 121 - 133   2022.01

Type of publication: Research paper (scientific journal)

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<p>Knowledge of environmental factors is crucial in understanding biological and ecological processes. Yet information on the environment around Sesoko Island, Okinawa, Japan, one of the main locations for coral reef research in Japan, remains scarce. Data of air and sea surface temperature (SST), wind velocity, wave height, and frequency of typhoons have been manually recorded at Sesoko Station, Tropical Biosphere Research Station, the University of the Ryukyus from September 1990 to November 2021. Here we describe the seasonal and long-term trends in these environmental variables at Sesoko Island. Some of the key findings were that the air temperature and SST fluctuated by ~9-12°C throughout the year. A rise in air temperature and SST between 1990 and 2021 was observed in the winter and autumn season, respectively. The Degree Heating Week (DHW) based on the in-situ data reflected the bleaching observations around Sesoko Station. The DHW exceeded the critical bleaching level of 8°C-week in 1998 and the significant bleaching level of 4°C-week in 2001, 2016, and 2017. Weak southerly winds were dominant in summers, while stronger northeasterly winds were dominant in winters. The frequency of winds between 3.4 to 7.9 m/s and northeastern winds have increased through time. Typhoons generally occur between May and October, and the frequency of typhoons has not increased over the past 30 years. Wave heights never exceeded 0.5 m and were highest between July and September. These findings will provide a reliable baseline of the environment at Sesoko Island for further ecological studies.</p>

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Deepest observation of the butterflyfish <i>Coradion altivelis</i> (Perciformes: Chaetodontidae) in Japan

Sinniger Frederic, Akamatsu Tomonari, Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 39 - 40   2022.01

Type of publication: Research paper (scientific journal)

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Coral reef research in Sesoko Island -50 years anniversary of Sesoko Station, University of the Ryukyus-

Harii Saki, Morita Masaya, Sakai Kazuhiko, Sinniger Frederic, Takemura Akihiro, Yamashiro Hideyuki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 1 - 4   2022.01

Type of publication: Research paper (scientific journal)

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A coral spawning calendar for Sesoko Station, Okinawa, Japan

Baird Andrew H., Edwards Alasdair J., Guest James R., Harii Saki, Hatta Masayuki, Lachs Liam, Mera Hanaka, Sinniger Frederic, Abrego David, Ben-Zvi Or, Bronstein Omri, Cabaitan Patrick C., Cumbo Vivian R., Eyal Gal, Eyal-Shaham Lee, Feldman Bar, Figueiredo Joana, Flot Jean-François, Grinblat Mila, Heyward Andrew, Hidaka Michio, Hirose Mamiko, Iguchi Akira, Isomura Naoko, Kinzie Robert A., Kitanobo Seiya, Kuba Alyson, Levy Oren, Loya Yossi, Mezaki Takuma, Mohamed Amin R., Morita Masaya, Nojima Satoshi, Nozawa Yoko, Prasetia Rian, Puill-Stephan Eneour, Ramirez-Portilla Catalina, Rapuano Hanna, Rosenberg Yaeli, Sakai Yusuke, Sakai Kazuhiko, Shlesinger Tom, Terraneo Tullia I., Yakovleva Irina, Yamamoto Hiromi H., Yamazato Kiyoshi

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 41 - 49   2022.01

Type of publication: Research paper (scientific journal)

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<p>Sesoko Station, Okinawa, has been the site of many significant advances in coral reproductive research and it continues to be a preferred destination for both Japanese and international researchers. Consequently, there are decades of spawning observations, which we present and explore here with the aim of making it easier to predict when species spawn at Sesoko Station. The data include over 700 spawning observations from 87 species of reef-building hermatypic corals. Almost all spawning occurred between dusk and dawn, with most spawning activity concentrated in the 2 to 4 hours after sunset. Some phylogenetic patterns were evident: most <i>Acropora</i> species spawn on or around the 6^th full moon after December 21^st (the northern hemisphere winter solstice); spawning in common species of merulinids and <i>Porites</i> appears to be concentrated around the 7^th full moon and spawning in the fungiids around the 8^th and subsequent full moons. The night of peak spawning with respect to the night of the full moon varied considerably among years in common <i>Acropora</i> species, but was dependent on the calendar date of the full moon in May or June. Therefore, despite an extended spawning season of over three months and considerable variation in the calendar date of spawning in many species among years, the month and night of spawning are reasonably predictable for many species enhancing the value of Sesoko Station as a site for coral reproductive research.</p>

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Overview of the mesophotic coral ecosystems around Sesoko Island, Okinawa, Japan

Sinniger Frederic, Albelda Ritzelle L., Prasetia Rian, Rouzé Héloïse, Sitorus Erlangga D., Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 69 - 76   2022.01

Type of publication: Research paper (scientific journal)

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<p>Coral reef ecosystems extend beyond the standard SCUBA diving depth. These ecosystems found between approximately 30 and over 150 m are referred to as mesophotic coral ecosystems (MCEs). Mesophotic coral communities have already been reported from Okinawa over 50 years ago. However, since then little additional knowledge has been obtained on the distribution and diversity of mesophotic corals in the region. Here, we provide an overview of the coral communities observed at selected sites in the region around Sesoko Island. Using photo-quadrats, we surveyed coral communities and specifically the contribution of the dominant coral genera to the total coral cover between different sites at depths ranging from 30 to 80 m. We found that deep coral communities around Sesoko Island hold a high potential biodiversity and need to be taken into account into coastal management plans.</p>

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Long-term trends and seasonal variations in environmental conditions in Sesoko Island, Okinawa, Japan

Singh Tanya, Sinniger Frederic, Nakano Yoshikatsu, Nakamura Shigeo, Kadena Shouhei, Jinza Mori, Fujimura Hiroyuki, Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 121 - 133   2022.01

Type of publication: Research paper (scientific journal)

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<p>Knowledge of environmental factors is crucial in understanding biological and ecological processes. Yet information on the environment around Sesoko Island, Okinawa, Japan, one of the main locations for coral reef research in Japan, remains scarce. Data of air and sea surface temperature (SST), wind velocity, wave height, and frequency of typhoons have been manually recorded at Sesoko Station, Tropical Biosphere Research Station, the University of the Ryukyus from September 1990 to November 2021. Here we describe the seasonal and long-term trends in these environmental variables at Sesoko Island. Some of the key findings were that the air temperature and SST fluctuated by ~9-12°C throughout the year. A rise in air temperature and SST between 1990 and 2021 was observed in the winter and autumn season, respectively. The Degree Heating Week (DHW) based on the in-situ data reflected the bleaching observations around Sesoko Station. The DHW exceeded the critical bleaching level of 8°C-week in 1998 and the significant bleaching level of 4°C-week in 2001, 2016, and 2017. Weak southerly winds were dominant in summers, while stronger northeasterly winds were dominant in winters. The frequency of winds between 3.4 to 7.9 m/s and northeastern winds have increased through time. Typhoons generally occur between May and October, and the frequency of typhoons has not increased over the past 30 years. Wave heights never exceeded 0.5 m and were highest between July and September. These findings will provide a reliable baseline of the environment at Sesoko Island for further ecological studies.</p>

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Deepest observation of the butterflyfish <i>Coradion altivelis</i> (Perciformes: Chaetodontidae) in Japan

Sinniger Frederic, Akamatsu Tomonari, Harii Saki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 39 - 40   2022.01

Type of publication: Research paper (scientific journal)

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Coral reef research in Sesoko Island -50 years anniversary of Sesoko Station, University of the Ryukyus-

Harii Saki, Morita Masaya, Sakai Kazuhiko, Sinniger Frederic, Takemura Akihiro, Yamashiro Hideyuki

Galaxea, Journal of Coral Reef Studies ( 日本サンゴ礁学会 )  24 ( 1 ) 1 - 4   2022.01

Type of publication: Research paper (scientific journal)

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Unique environmental Symbiodiniaceae diversity at an isolated island in the northwestern Pacific.

Yorifuji M, Yamashita H, Suzuki G, Kawasaki T, Tsukamoto T, Okada W, Tamura K, Nakamura R, Inoue M, Yamazaki M, Harii S

Molecular phylogenetics and evolution ( Molecular Phylogenetics and Evolution )  161   107158 - 107158   2021.08 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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Dinoflagellates in the family Symbiodiniaceae are intensively investigated as algal symbionts of corals and other invertebrates, underpinning coral reef ecosystems as primary producers. Diversity, including regional diversification, of free-living communities is less studied. In this study, an environmental Symbiodiniaceae community at an isolated island, Okinotori Island, Japan, was investigated to determine whether the community is endemic or common with other locations near continents and major ocean currents. Symbiotic algae in common corals at the island were the same type as those of the corals from other Japanese waters. In the environmental samples, genera Symbiodinium (formerly clade A), Cladocopium (clade C), Durusdinium (clade D), and clades F (including Freudenthalidium), G, and I, were identified through analysis of internal transcribed spacer region 2 of nuclear ribosomal RNA gene (ITS2) sequences. Interestingly, some sequences found were genetically different from those of previously reported genera/clades. These unknown sequences were genetically included in the Symbiodiniaceae linage, but they were differentiated from the previously known nine clades. The sequences formed a cluster in the phylogenetic tree based on 28S nrDNA. These sequences were thus considered members of a novel clade in the family (clade J). In total, 120 kinds of ITS2 sequences were produced; while 10 were identical to previously reported sequences, the majority were highly divergent. These genetically unique Symbiodiniaceae types, including novel clade J, may have evolved in isolation and reflect the environmental characteristics of the Okinotori Island.

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Morphological stasis masks ecologically divergent coral species on tropical reefs.

Bongaerts P, Cooke IR, Ying H, Wels D, den Haan S, Hernandez-Agreda A, Brunner CA, Dove S, Englebert N, Eyal G, Forêt S, Grinblat M, Hay KB, Harii S, Hayward DC, Lin Y, Mihaljević M, Moya A, Muir P, Sinniger F, Smallhorn-West P, Torda G, Ragan MA, van Oppen MJH, Hoegh-Guldberg O

Current biology : CB ( Current Biology )  31 ( 11 ) 2286 - 2298.e8   2021.06 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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Coral reefs are the epitome of species diversity, yet the number of described scleractinian coral species, the framework-builders of coral reefs, remains moderate by comparison. DNA sequencing studies are rapidly challenging this notion by exposing a wealth of undescribed diversity, but the evolutionary and ecological significance of this diversity remains largely unclear. Here, we present an annotated genome for one of the most ubiquitous corals in the Indo-Pacific (Pachyseris speciosa) and uncover, through a comprehensive genomic and phenotypic assessment, that it comprises morphologically indistinguishable but ecologically divergent lineages. Demographic modeling based on whole-genome resequencing indicated that morphological crypsis (across micro- and macromorphological traits) was due to ancient morphological stasis rather than recent divergence. Although the lineages occur sympatrically across shallow and mesophotic habitats, extensive genotyping using a rapid molecular assay revealed differentiation of their ecological distributions. Leveraging "common garden'' conditions facilitated by the overlapping distributions, we assessed physiological and quantitative skeletal traits and demonstrated concurrent phenotypic differentiation. Lastly, spawning observations of genotyped colonies highlighted the potential role of temporal reproductive isolation in the limited admixture, with consistent genomic signatures in genes related to morphogenesis and reproduction. Overall, our findings demonstrate the presence of ecologically and phenotypically divergent coral species without substantial morphological differentiation and provide new leads into the potential mechanisms facilitating such divergence. More broadly, they indicate that our current taxonomic framework for reef-building corals may be scratching the surface of the ecologically relevant diversity on coral reefs, consequently limiting our ability to protect or restore this diversity effectively.

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Environmental constraints on the mode of symbiont transmission in corals

Baird Andrew H., Yakovleva Irina M., Harii Saki, Harii Saki, Sinniger Frederic, Hidaka Michio

Journal of Experimental Marine Biology and Ecology ( ELSEVIER )  538   2021.05 [ Peer Review Accepted ]

Type of publication: Research paper (other science council materials etc.)

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Theory predicts that passing symbionts directly from parent to offspring should benefit the host by reducing conflict between diverse symbionts and benefit the symbiont by guaranteeing transmission. However, in some symbiotic associations, such as those between corals and algae of the family Symbiodiniaceae, vertical transmission is rare, suggesting a substantial cost. Here, we show that coral larvae which contained symbionts had lower survivorship than larvae of the same species that lacked symbionts when exposed to natural sunlight. Higher activity of antioxidant defenses and higher levels of oxidative cellular damage observed in symbiotic larvae suggest that reactive oxygen species, produced by stress on the photosynthetic apparatus of the symbionts, are responsible for these higher rates of mortality under solar radiation. We hypothesize that symbionts are a burden in the early life history of broadcast spawning corals under conditions typically experienced on the ocean surface during dispersal. This is one possible reason why species with an obligate pre-motile period of between 12 and 36 h very rarely have vertical transmission of symbionts, in contrast to species whose larvae are small or swim on release that often have vertical transmission of symbionts.

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N-Acetyl-d-Glucosamine-Binding Lectin in Acropora tenuis Attracts Specific Symbiodiniaceae Cell Culture Strains.

Takeuchi R, Jimbo M, Tanimoto F, Iijima M, Yamashita H, Suzuki G, Harii S, Nakano Y, Yasumoto K, Watabe S

Marine drugs ( Marine Drugs )  19 ( 3 )   2021.03 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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Many corals establish symbiosis with Symbiodiniaceae cells from surrounding environments, but very few Symbiodiniaceae cells exist in the water column. Given that the N-acetyl-d-glucosamine-binding lectin ActL attracts Symbiodiniaceae cells, we hypothesized that corals must attract Symbiodiniaceae cells using ActL to acquire them. Anti-ActL antibody inhibited acquisition of Symbiodiniaceae cells, and rearing seawater for juvenile Acropora tenuis contained ActL, suggesting that juvenile A. tenuis discharge ActL to attract these cells. Among eight Symbiodiniaceae cultured strains, ActL attracted NBRC102920 (Symbiodinium tridacnidorum) most strongly followed by CS-161 (Symbiodinium tridacnidorum), CCMP2556 (Durusdinium trenchii), and CCMP1633 (Breviolum sp.); however, it did not attract GTP-A6-Sy (Symbiodinium natans), CCMP421 (Effrenium voratum), FKM0207 (Fugacium sp.), and CS-156 (Fugacium sp.). Juvenile polyps of A. tenuis acquired limited Symbiodiniaceae cell strains, and the number of acquired Symbiodiniaceae cells in a polyp also differed from each other. The number of Symbiodiniaceae cells acquired by juvenile polyps of A. tenuis was correlated with the ActL chemotactic activity. Thus, ActL could be used to attract select Symbiodiniaceae cells and help Symbiodiniaceae cell acquisition in juvenile polyps of A. tenuis, facilitating establishment of symbiosis between A. tenuis and Symbiodiniaceae cells.

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An Indo-Pacific coral spawning database.

Baird AH, Guest JR, Edwards AJ, Bauman AG, Bouwmeester J, Mera H, Abrego D, Alvarez-Noriega M, Babcock RC, Barbosa MB, Bonito V, Burt J, Cabaitan PC, Chang CF, Chavanich S, Chen CA, Chen CJ, Chen WJ, Chung FC, Connolly SR, Cumbo VR, Dornelas M, Doropoulos C, Eyal G, Eyal-Shaham L, Fadli N, Figueiredo J, Flot JF, Gan SH, Gomez E, Graham EM, Grinblat M, Gutiérrez-Isaza N, Harii S, Harrison PL, Hatta M, Ho NAJ, Hoarau G, Hoogenboom M, Howells EJ, Iguchi A, Isomura N, Jamodiong EA, Jandang S, Keyse J, Kitanobo S, Kongjandtre N, Kuo CY, Ligson C, Lin CH, Low J, Loya Y, Maboloc EA, Madin JS, Mezaki T, Min C, Morita M, Moya A, Neo SH, Nitschke MR, Nojima S, Nozawa Y, Piromvaragorn S, Plathong S, Puill-Stephan E, Quigley K, Ramirez-Portilla C, Ricardo G, Sakai K, Sampayo E, Shlesinger T, Sikim L, Simpson C, Sims CA, Sinniger F, Spiji DA, Tabalanza T, Tan CH, Terraneo TI, Torda G, True J, Tun K, Vicentuan K, Viyakarn V, Waheed Z, Ward S, Willis B, Woods RM, Woolsey ES, Yamamoto HH, Yusuf S

Scientific data   8 ( 1 ) 35 - 35   2021.01 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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The discovery of multi-species synchronous spawning of scleractinian corals on the Great Barrier Reef in the 1980s stimulated an extraordinary effort to document spawning times in other parts of the globe. Unfortunately, most of these data remain unpublished which limits our understanding of regional and global reproductive patterns. The Coral Spawning Database (CSD) collates much of these disparate data into a single place. The CSD includes 6178 observations (3085 of which were unpublished) of the time or day of spawning for over 300 scleractinian species in 61 genera from 101 sites in the Indo-Pacific. The goal of the CSD is to provide open access to coral spawning data to accelerate our understanding of coral reproductive biology and to provide a baseline against which to evaluate any future changes in reproductive phenology.

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Effects of light on the Ba/Ca ratios in coral skeletons

Yamazaki A.

Chemical Geology ( Chemical Geology )  559   2021.01 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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The ratios of barium to calcium (Ba/Ca) in reef coral skeletons have been used as a proxy to reconstruct temporal change in barium concentration in surface ocean. To reduce the uncertainty of the coral Ba/Ca proxy, the Ba distribution coefficients between seawater and coral skeletons were determined under different light conditions. Coral planulae (Acropora tenuis) were metamorphosed and settled in dishes with commercial peptide Hym-248 in the laboratory. Juvenile corals were infected with symbiotic algae (Durusdinium sp.) and cultured in 5 Ba concentrations (5, 10, 20, 35, and 150 mol/mol) for 2 months. Half of the dishes were placed under low light conditions (10-33 mu mol m(-2) s(-1)), and another half of the dishes were placed under high light conditions (67-84 mu mol m(-2) s(-1)). The Ba/Ca ratios in the coral skeletons were highly correlated with those in ambient seawater under both high and low conditions (R-2 > 0.8). The Ba distribution coefficients between seawater with 5-35 mol/mol of Ba concentration and coral skeletons were 0.72 and 2.83 under high and low light conditions, respectively. These results suggest that biological processes related to light availability could influence to Ba/Ca-coral.

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Exploring coral reef biodiversity via underwater soundscapes

Tzu-Hao Lin, Tomonari Akamatsu, Frederic Sinniger, Saki Harii

Biological Conservation ( Elsevier BV )  253   108901 - 108901   2021.01 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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Exploring coral reef biodiversity via underwater soundscapes

Tzu-Hao Lin, Tomonari Akamatsu, Frederic Sinniger, Saki Harii

  in press   2021 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

Coral-spawn slicks: Reflectance spectra and detection using optical satellite data

Yamano H., Sakuma A., Harii S.

Remote Sensing of Environment ( Remote Sensing of Environment )  251   2020.12 [ Peer Review Accepted ]

Type of publication: Research paper (scientific journal)

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