Articles | Volume 11, issue 17
https://doi.org/10.5194/bg-11-4829-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-11-4829-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
A red tide alga grown under ocean acidification upregulates its tolerance to lower pH by increasing its photophysiological functions
S. Chen
Marine Biology Institute, Shantou University, Shantou 515063, China
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
J. Beardall
School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
Related authors
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Guang Gao, Tifeng Wang, Jiazhen Sun, Xin Zhao, Lifang Wang, Xianghui Guo, and Kunshan Gao
Biogeosciences, 19, 2795–2804, https://doi.org/10.5194/bg-19-2795-2022, https://doi.org/10.5194/bg-19-2795-2022, 2022
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After conducting large-scale deck-incubation experiments, we found that seawater acidification (SA) increased primary production (PP) in coastal waters but reduced it in pelagic zones, which is mainly regulated by local pH, light intensity, salinity, and community structure. In future oceans, SA combined with decreased upward transports of nutrients may synergistically reduce PP in pelagic zones.
Yong Zhang, Sinéad Collins, and Kunshan Gao
Biogeosciences, 17, 6357–6375, https://doi.org/10.5194/bg-17-6357-2020, https://doi.org/10.5194/bg-17-6357-2020, 2020
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Our results show that ocean acidification, warming, increased light exposure and reduced nutrient availability significantly reduce the growth rate but increase particulate organic and inorganic carbon in cells in the coccolithophore Emiliania huxleyi, indicating biogeochemical consequences of future ocean changes on the calcifying microalga. Concurrent changes in nutrient concentrations and pCO2 levels predominantly affected E. huxleyi growth, photosynthetic carbon fixation and calcification.
Xiangqi Yi, Fei-Xue Fu, David A. Hutchins, and Kunshan Gao
Biogeosciences, 17, 1169–1180, https://doi.org/10.5194/bg-17-1169-2020, https://doi.org/10.5194/bg-17-1169-2020, 2020
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Combined effects of warming and light intensity were estimated in N2-fixing cyanobacterium Trichodesmium. Its physiological responses to warming were significantly modulated by light, with growth peaking at 27 °C under the light-saturating condition but being non-responsive across the range of 23–31 °C under the light-limiting condition. Light shortage also weakened the acclimation ability of Trichodesmium to warming, making light-limited Trichodesmium more sensitive to acute temperature change.
Jiekai Xu, John Beardall, and Kunshan Gao
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-4, https://doi.org/10.5194/bg-2019-4, 2019
Revised manuscript not accepted
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A lot of papers studying Ocean acidification (OA) have been published while no related reports can be found on the combined effects of OA with decreased salinity on coccolithophores yet.Thus, we investigated the physiological responses of an Emiliania huxleyi strain grown at 2CO2 concentrations and 3 levels of salinity and found cells could tolerate reduced salinity under OA as its increased light capturing capability, which suggests a potential niche extension of coccolithophores in the future.
Shanying Tong, David A. Hutchins, and Kunshan Gao
Biogeosciences, 16, 561–572, https://doi.org/10.5194/bg-16-561-2019, https://doi.org/10.5194/bg-16-561-2019, 2019
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Most previous studies concerning the effects of environmental changes on marine organisms have been carried out under
photosynthetically active radiation onlyconditions, with solar ultraviolet radiation (UVR) not being considered. In this study, we found that UVR can counteract the negative effects of the
greenhousetreatment on the calcification rate to photosynthesis rate ratio, and may be a key stressor when considering the impacts of future greenhouse conditions on E. huxleyi.
Sheng-Hui Zhang, Juan Yu, Qiong-Yao Ding, Gui-Peng Yang, Kun-Shan Gao, Hong-Hai Zhang, and Da-Wei Pan
Biogeosciences, 15, 6649–6658, https://doi.org/10.5194/bg-15-6649-2018, https://doi.org/10.5194/bg-15-6649-2018, 2018
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Environmental effects of ocean acidification and trace gases have drawn much attention in recent years and existing studies reveal that the response of communities and trace gases to ocean acidification is still not predictable and requires further study. The present study examined the effect of elevated pCO2 on trace gas production and phytoplankton during an ocean acidification mesocosm experiment.
Guang Gao, John Beardall, Menglin Bao, Can Wang, Wangwang Ren, and Juntian Xu
Biogeosciences, 15, 3409–3420, https://doi.org/10.5194/bg-15-3409-2018, https://doi.org/10.5194/bg-15-3409-2018, 2018
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We investigated the physiological responses of a green tide alga to the combination of ocean acidification and nutrient limitation. Elevated pCO2 did not affect the growth rate when cultured under nutrient replete conditions but reduced it under P limitation. P limitation resulted in a larger inhibition in growth for sporelings compared to adult plants. These findings indicate that ocean acidification and nutrient limitation may hinder the occurrence of green tides in future ocean environment.
Xin Lin, Ruiping Huang, Yan Li, Futian Li, Yaping Wu, David A. Hutchins, Minhan Dai, and Kunshan Gao
Biogeosciences, 15, 551–565, https://doi.org/10.5194/bg-15-551-2018, https://doi.org/10.5194/bg-15-551-2018, 2018
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We examine the effects of elevated CO2 on bacterioplankton community during a mesocosm experiment in subtropical, eutrophic coastal waters in southern China. We found that the elevated CO2 hardly altered the network structure of the bacterioplankton taxa present with high abundance but appeared to reassemble the community network of taxa with low abundance. Results suggest that the bacterioplankton community in this subtropical, high-nutrient coastal environment is insensitive to elevated CO2.
Yong Zhang, Feixue Fu, David A. Hutchins, and Kunshan Gao
Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-11, https://doi.org/10.5194/bg-2018-11, 2018
Revised manuscript not accepted
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To investigate responses of the calcifying E. huxleyi to multiple environmental factors, we investigated its growth, POC and PIC quotas and photosynthesis parameter at different levels of CO2, light, dissolved inorganic nitrogen and phosphate concentrations. High CO2 (HC) and low nitrogen (LN) synergistically decreased growth rates, high light compensated for inhibition of low phosphate (LP) on growth rates at LC, but exacerbated inhibition of LP at HC. LN or LP increased PIC quotas and ETRmax.
Yaping Wu, Furong Yue, Juntian Xu, and John Beardall
Biogeosciences, 14, 5029–5037, https://doi.org/10.5194/bg-14-5029-2017, https://doi.org/10.5194/bg-14-5029-2017, 2017
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Diatoms were less inhibited by UV radiation under moderately increased temperature. Benthic diatoms were more resistant to UV radiation than planktonic species under extremely high temperature as found in the intertidal zone. These differential responses were linked to repair and damage processes of photosystem II.
Xiaoni Cai, David A. Hutchins, Feixue Fu, and Kunshan Gao
Biogeosciences, 14, 4455–4466, https://doi.org/10.5194/bg-14-4455-2017, https://doi.org/10.5194/bg-14-4455-2017, 2017
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Trichodesmium is significant marine N2 fixer. We conducted short- and long-term UV exposure experiment to investigate how UV affects this organism. Our results showed N2 fixation and carbon fixation rates were significantly reduced under UV radiation. As a defense strategy, Trichodesmium is able to synthesize UV-absorbing compounds to protect from UV damage. Our results suggest that shipboard experiments in UV-opaque containers may have substantially overestimated in situ N2 fixation rate.
Futian Li, Yaping Wu, David A. Hutchins, Feixue Fu, and Kunshan Gao
Biogeosciences, 13, 6247–6259, https://doi.org/10.5194/bg-13-6247-2016, https://doi.org/10.5194/bg-13-6247-2016, 2016
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Ongoing ocean acidification is being superimposed on the natural carbonate buffer system to influence the physiology of phytoplankton. Here, we show that coastal and oceanic diatoms respond differentially to diurnal fluctuating carbonate chemistry in current and ocean acidification scenarios. We propose that the ability to acclimate to dynamic carbonate chemistry may act as one determinant of the spatial distribution of diatom species.
Guang Gao, Peng Jin, Nana Liu, Futian Li, Shanying Tong, David A. Hutchins, and Kunshan Gao
Biogeosciences Discuss., https://doi.org/10.5194/bg-2016-403, https://doi.org/10.5194/bg-2016-403, 2016
Manuscript not accepted for further review
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Our shipboard experiments showed high temperature and CO2 (HTHC) did not affect phytoplankton biomass at nearshore station but decreased it at offshore station. HT did not change dark respiration at nearshore station but enhanced it at offshore station. Our findings indicate that responses of coastal and offshore phytoplankton assemblages to ocean warming and acidification may be contrasting, with the pelagic phytoplankton communities being more sensitive to these two global change factors.
Juntian Xu, Lennart T. Bach, Kai G. Schulz, Wenyan Zhao, Kunshan Gao, and Ulf Riebesell
Biogeosciences, 13, 4637–4643, https://doi.org/10.5194/bg-13-4637-2016, https://doi.org/10.5194/bg-13-4637-2016, 2016
Perran L. M. Cook, Miles Jennings, Daryl P. Holland, John Beardall, Christy Briles, Atun Zawadzki, Phuong Doan, Keely Mills, and Peter Gell
Biogeosciences, 13, 3677–3686, https://doi.org/10.5194/bg-13-3677-2016, https://doi.org/10.5194/bg-13-3677-2016, 2016
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The Gippsland Lakes, Australia, have suffered from periodic blooms of cyanobacteria (blue green algae) since the mid 1980s. Prior to this, little is known about the history of cyanobacterial blooms in this system. We investigated the history of cyanobacterial blooms using a sediment core taken from the Gippsland Lakes which had each layer dated using lead isotopes. The results showed that surprising blooms of cyanobacteria were also prevalent prior to European settlement
Khan M. G. Mostofa, Cong-Qiang Liu, WeiDong Zhai, Marco Minella, Davide Vione, Kunshan Gao, Daisuke Minakata, Takemitsu Arakaki, Takahito Yoshioka, Kazuhide Hayakawa, Eiichi Konohira, Eiichiro Tanoue, Anirban Akhand, Abhra Chanda, Baoli Wang, and Hiroshi Sakugawa
Biogeosciences, 13, 1767–1786, https://doi.org/10.5194/bg-13-1767-2016, https://doi.org/10.5194/bg-13-1767-2016, 2016
Y. Li, S. Zhuang, Y. Wu, H. Ren, F. Cheng, X. Lin, K. Wang, J. Beardall, and K. Gao
Biogeosciences Discuss., https://doi.org/10.5194/bgd-12-15809-2015, https://doi.org/10.5194/bgd-12-15809-2015, 2015
Revised manuscript not accepted
W. Li, K. Gao, and J. Beardall
Biogeosciences, 12, 2383–2393, https://doi.org/10.5194/bg-12-2383-2015, https://doi.org/10.5194/bg-12-2383-2015, 2015
O. Sackett, L. Armand, J. Beardall, R. Hill, M. Doblin, C. Connelly, J. Howes, B. Stuart, P. Ralph, and P. Heraud
Biogeosciences, 11, 5795–5808, https://doi.org/10.5194/bg-11-5795-2014, https://doi.org/10.5194/bg-11-5795-2014, 2014
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Technical note: Low meteorological influence found in 2019 Amazonia fires
Understanding tropical forest abiotic response to hurricanes using experimental manipulations, field observations, and satellite data
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The extant shore platform stromatolite (SPS) facies association: a glimpse into the Archean?
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Douglas I. Kelley, Chantelle Burton, Chris Huntingford, Megan A. J. Brown, Rhys Whitley, and Ning Dong
Biogeosciences, 18, 787–804, https://doi.org/10.5194/bg-18-787-2021, https://doi.org/10.5194/bg-18-787-2021, 2021
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Initial evidence suggests human ignitions or landscape changes caused most Amazon fires during August 2019. However, confirmation is needed that meteorological conditions did not have a substantial role. Assessing the influence of historical weather on burning in an uncertainty framework, we find that 2019 meteorological conditions alone should have resulted in much less fire than observed. We conclude socio-economic factors likely had a strong role in the high recorded 2019 fire activity.
Ashley E. Van Beusekom, Grizelle González, Sarah Stankavich, Jess K. Zimmerman, and Alonso Ramírez
Biogeosciences, 17, 3149–3163, https://doi.org/10.5194/bg-17-3149-2020, https://doi.org/10.5194/bg-17-3149-2020, 2020
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This study looks at forest abiotic responses to canopy openness and debris deposition that follow a hurricane. We find that recovery to full canopy may take over half a decade and that recovery of humidity, soil moisture, and leaf saturation under the canopy is not monotonic and may temporarily look recovered before the response is over. Furthermore, we find that satellite data show a quicker recovery than field data, necessitating caution when looking at responses to hurricanes with satellites.
Nora Linscheid, Lina M. Estupinan-Suarez, Alexander Brenning, Nuno Carvalhais, Felix Cremer, Fabian Gans, Anja Rammig, Markus Reichstein, Carlos A. Sierra, and Miguel D. Mahecha
Biogeosciences, 17, 945–962, https://doi.org/10.5194/bg-17-945-2020, https://doi.org/10.5194/bg-17-945-2020, 2020
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Vegetation typically responds to variation in temperature and rainfall within days. Yet seasonal changes in meteorological conditions, as well as decadal climate variability, additionally shape the state of ecosystems. It remains unclear how vegetation responds to climate variability on these different timescales. We find that the vegetation response to climate variability depends on the timescale considered. This scale dependency should be considered for modeling land–atmosphere interactions.
Ronny Meier, Edouard L. Davin, Quentin Lejeune, Mathias Hauser, Yan Li, Brecht Martens, Natalie M. Schultz, Shannon Sterling, and Wim Thiery
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Alan Smith, Andrew Cooper, Saumitra Misra, Vishal Bharuth, Lisa Guastella, and Riaan Botes
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Luciana M. Sanders, Kathryn Taffs, Debra Stokes, Christian J. Sanders, Alex Enrich-Prast, Leonardo Amora-Nogueira, and Humberto Marotta
Biogeosciences, 15, 447–455, https://doi.org/10.5194/bg-15-447-2018, https://doi.org/10.5194/bg-15-447-2018, 2018
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The Amazon rainforest produce large quantities of carbon, a portion of which is deposited in floodplain lakes. This research shows a potentially important spatial dependence of the carbon deposition in the Amazon lacustrine sediments in relation to deforestation rates in the catchment. The findings presented here highlight the effects of abrupt and temporary events in which some of the biomass released by the deforestation reach the depositional environments in the Amazon floodplains.
Etienne Godin, Daniel Fortier, and Esther Lévesque
Biogeosciences, 13, 1439–1452, https://doi.org/10.5194/bg-13-1439-2016, https://doi.org/10.5194/bg-13-1439-2016, 2016
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M. Marshall, E. Okuto, Y. Kang, E. Opiyo, and M. Ahmed
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F. Günther, P. P. Overduin, A. V. Sandakov, G. Grosse, and M. N. Grigoriev
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B. M. Rogers, J. T. Randerson, and G. B. Bonan
Biogeosciences, 10, 699–718, https://doi.org/10.5194/bg-10-699-2013, https://doi.org/10.5194/bg-10-699-2013, 2013
Y. Xia and X. Yan
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R. Sulpizio, G. Zanchetta, M. D'Orazio, H. Vogel, and B. Wagner
Biogeosciences, 7, 3273–3288, https://doi.org/10.5194/bg-7-3273-2010, https://doi.org/10.5194/bg-7-3273-2010, 2010
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