Seasonal calcification of the coral Acropora digitifera from a subtropical marginal Okinawa reef under ocean acidification

Kurihara, Haruko; Wouters, Judith; Yasuda, Naoko

doi:10.1007/s00338-019-01794-9

Cited by 13 publications

(6 citation statements)

References 56 publications

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“…The optimum temperature for T. hemprichii at Santiago Islands, Philippines (annual temperature range of 24–33 °C) was reported to be around 27 °C 26 . Taking into account that the annual temperature range at the present site in Okinawa Island ranges from 20 to 30 °C 27 and that the high temperature conditions did not show positive effects, it can be considered that the present high temperature condition (32.5 °C) was close to their upper thermal window range. Additionally, future temperature conditions may exceed the upper threshold of seagrass species that inhabit places with higher annual temperature including low latitude tropic regions.…”

Section: Discussionmentioning

confidence: 81%

Ocean warming and acidification modify top-down and bottom-up control in a tropical seagrass ecosystem

Listiawati

Kurihara

2021

Sci Rep

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Seagrass ecosystem is one of the most productive ecosystems in coastal waters providing numerous ecological functions and supporting a large biodiversity. However, various anthropogenic stressors including climate change are impacting these vulnerable habitats. Here, we investigated the independent and combined effects of ocean warming and ocean acidification on plant–herbivore interactions in a tropical seagrass community. Direct and indirect effects of high temperature and high pCO2 on the physiology of the tropical seagrass Thalassia hemprichii and sea urchin Tripneustes gratilla were evaluated. Productivity of seagrass was found to increase under high pCO2, while sea urchin physiology including feeding rate decreased particularly under high temperature. The present study indicated that future climate change will affect the bottom-up and top-down balance, which potentially can modify the ecosystem functions and services of tropical seagrass ecosystems.

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Section: Discussionmentioning

confidence: 81%

Ocean warming and acidification modify top-down and bottom-up control in a tropical seagrass ecosystem

Listiawati

Kurihara

2021

Sci Rep

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“…These rates generally peak at temperatures close to their local summer maxima (Jokiel 2004). A decrease in growth rates from the summer to winter has been observed for several species of corals in subtropical regions (Shinn 1966;Kurihara et al 2019). Therefore, a warmer winter could potentially result in higher growth rates.…”

Section: Discussionmentioning

confidence: 93%

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

Singh

Sinniger

Nakano

et al. 2022

Galaxea, Journal of Coral Reef Studies

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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.

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“…The optimum temperature for T. hemprichii at Santiago Islands, Philippines (annual temperature range of 24 to 33 °C) was reported to be around 27 °C27 . Taking into account that the annual temperature range at the present site in Okinawa Island ranges from 20 to 30 °C28 and that the high temperature conditions did not show positive effects, it can be considered that the present high temperature condition (32.5 °C) was close to their upper thermal window range. Consequently, although future increases of seawater temperature by 3 °C may not negatively impact T. hemprichii, further increases of temperature would be deleterious to the seagrass.…”

mentioning

confidence: 81%

Ocean Warming and Acidification Modify Top-Down and Bottom-Up Control in A Tropical Seagrass Ecosystem

Listiawati

Kurihara

2020

Preprint

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Seagrass ecosystems are classified as one of the most productive ecosystems in coastal waters providing numerous of ecological functions, however various anthropogenic stressors including climate change are impacting these vulnerable habitats. Here, we investigated the independent and combined effects of ocean warming and ocean acidification on plant-herbivore interactions in a tropical seagrass community. Direct and indirect effects of high temperature and high pCO2 on the physiology of the tropical seagrass Thalassia hemprichii and sea urchin Tripneustes gratilla were evaluated. Productivity of seagrass was found to synergistically increase under the combination of high temperature and high pCO2, while sea urchin physiology including feeding rate decreased particularly under high temperature. The present study indicated that future climate change will affect the botom-up and top-down balance leading to a shift to a seagrass-dominated ecosystem, which potentially decrease biodiversity as well as ecosystem functions and services of tropical seagrass meadows.

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Seasonal calcification of the coral Acropora digitifera from a subtropical marginal Okinawa reef under ocean acidification

Cited by 13 publications

References 56 publications

Ocean warming and acidification modify top-down and bottom-up control in a tropical seagrass ecosystem

Ocean warming and acidification modify top-down and bottom-up control in a tropical seagrass ecosystem

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

Ocean Warming and Acidification Modify Top-Down and Bottom-Up Control in A Tropical Seagrass Ecosystem

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