Ecosystem state change in the Arabian Sea fuelled by the recent loss of snow over the Himalayan-Tibetan Plateau region.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
04 05 2020
04 05 2020
Historique:
received:
14
02
2019
accepted:
12
04
2020
entrez:
6
5
2020
pubmed:
6
5
2020
medline:
6
5
2020
Statut:
epublish
Résumé
The recent trend of global warming has exerted a disproportionately strong influence on the Eurasian land surface, causing a steady decline in snow cover extent over the Himalayan-Tibetan Plateau region. Here we show that this loss of snow is undermining winter convective mixing and causing stratification of the upper layer of the Arabian Sea at a much faster rate than predicted by global climate models. Over the past four decades, the Arabian Sea has also experienced a profound loss of inorganic nitrate. In all probability, this is due to increased denitrification caused by the expansion of the permanent oxygen minimum zone and consequent changes in nutrient stoichiometries. These exceptional changes appear to be creating a niche particularly favorable to the mixotroph, Noctiluca scintillans which has recently replaced diatoms as the dominant winter, bloom forming organism. Although Noctiluca blooms are non-toxic, they can cause fish mortality by exacerbating oxygen deficiency and ammonification of seawater. As a consequence, their continued range expansion represents a significant and growing threat for regional fisheries and the welfare of coastal populations dependent on the Arabian Sea for sustenance.
Identifiants
pubmed: 32367063
doi: 10.1038/s41598-020-64360-2
pii: 10.1038/s41598-020-64360-2
pmc: PMC7198515
doi:
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
7422Références
Clemens, S., Prell, W., Murray, D., Shimmield, G. & Weedon, G. Forcing mechanisms of the Indian Ocean monsoon. Nature 353, 720–725 (1991).
doi: 10.1038/353720a0
Brock, J. C., McClain, C. R., Luther, M. E. & Hay, W. W. The phytoplankton bloom in the northwestern Arabian Sea during the southwest monsoon of 1979. Journal of Geophysical Research: Oceans 96, 20623–20642, https://doi.org/10.1029/91JC01711 (1991).
doi: 10.1029/91JC01711
Goes, J. I., Prasad, T. G., Gomes, H. & Fasullo, J. T. Warming of the Eurasian landmass is making the Arabian Sea more productive. Science 308, 545–547 (2005).
doi: 10.1126/science.1106610
Madhupratap, M. et al. Mechanism of the biological response to winter cooling in the northeastern Arabian Sea. Nature 384, 549, https://doi.org/10.1038/384549a0 (1996).
doi: 10.1038/384549a0
Morrison, J. M. et al. The oxygen minimum zone in the Arabian Sea during 1995. Deep Sea Research II 46, 1903–1931 (1999).
doi: 10.1016/S0967-0645(99)00048-X
Smith, S. L. The Arabian Sea of the 1990s: New biogeochemical understanding. Progress in Oceanography 65, 113–115 (2005).
doi: 10.1016/j.pocean.2005.03.001
deCastro, M., Sousa, M. C., Santos, F., Dias, J. M. & Gómez-Gesteira, M. How will Somali coastal upwelling evolve under future warming scenarios? Scientific Reports 6, 30137, https://doi.org/10.1038/srep30137 (2016).
doi: 10.1038/srep30137
pubmed: 27440455
pmcid: 4954972
Jin, Q. & Wang, C. A revival of Indian summer monsoon rainfall since 2002. Nature Climate Change 7, 587–594, https://doi.org/10.1038/nclimate3348 (2017).
doi: 10.1038/nclimate3348
Findlater, J. A major low-level air current near the Indian Ocean during the northern summer. Quarterly Journal of the Royal Meteorological Society 95, 362–380, https://doi.org/10.1002/qj.49709540409 (1969).
doi: 10.1002/qj.49709540409
Banse, K. & English, D. C. Geographical differences in seasonality of CZCS derived phytoplankton pigment in the Arabian Sea for 1978-1986. Deep-Sea Research II 47, 1623–1677 (2000).
doi: 10.1016/S0967-0645(99)00157-5
Wiggert, J. D., Murtugudde, R. G. & McClain, C. R. Processes controlling interannual variations in wintertime (Northeast Monsoon) primary productivity in the central Arabian Sea. Deep Sea Research Part II 49, 2319–2343 (2002).
doi: 10.1016/S0967-0645(02)00039-5
Wiggert, J. D., Hood, R. R., Banse, K. & Kindle, J. C. Monsoon-driven biogeochemical processes in the Arabian Sea. Progress in Oceanography 65, 176–213 (2005).
doi: 10.1016/j.pocean.2005.03.008
Roxy, M. K. et al. Drying of Indian subcontinent by rapid Indian Ocean warming and a weakening land-sea thermal gradient. Nature Communications 6, https://doi.org/10.1038/ncomms8423 (2015).
Turner, A. G. & Annamalai, H. Climate change and the South Asian summer monsoon. Nature Climate Change 2, 587, https://doi.org/10.1038/nclimate1495 (2012).
doi: 10.1038/nclimate1495
Gadgil, S. & Gadgil, S. The Indian Monsoon, GDP and Agriculture. Economic and Political Weekly 41, 4887–4895 (2006).
Goswami, B. N., Venugopal, V., Sengupta, D., Madhusoodanan, M. S. & Xavier, P. K. Increasing Trend of Extreme Rain Events Over India in a Warming Environment. Science 314, 1442–1445, https://doi.org/10.1126/science.1132027 (2006).
doi: 10.1126/science.1132027
pubmed: 17138899
Izumo, T. et al. The Role of the Western Arabian Sea Upwelling in Indian Monsoon Rainfall Variability. Journal of Climate 21, 5603–5623, https://doi.org/10.1175/2008jcli2158.1 (2008).
doi: 10.1175/2008jcli2158.1
Vialard, J. et al. Factors controlling January–April rainfall over southern India and Sri Lanka. Climate Dynamics 37, 493–507, https://doi.org/10.1007/s00382-010-0970-4 (2011).
doi: 10.1007/s00382-010-0970-4
Keerthi, M. G., Lengaigne, M., Vialard, J., Boyer Montégut, C. & Muraleedharan, P. M. Interannual variability of the Tropical Indian Ocean mixed layer depth. Climate Dynamics 40, 743–759, https://doi.org/10.1007/s00382-012-1295-2 (2013).
doi: 10.1007/s00382-012-1295-2
Parvathi, V., Suresh, I., Lengaigne, M., Izumo, T. & Vialard, J. Robust Projected Weakening of Winter Monsoon Winds Over the Arabian Sea Under Climate Change. Geophysical Research Letters 44, 9833–9843, https://doi.org/10.1002/2017GL075098 (2017).
doi: 10.1002/2017GL075098
Behringer, D. W. & Xue, Y. Evaluation of the global ocean data assimilation system at NCEP: The Pacific Ocean In Eighth Symposium on Integrated Observing and Assimilation Systems for Atmosphere, Oceans, and Land Surface, AMS 84th Annual Meeting, Washington State Convention and Trade Center, Seattle, Washington, 11-15.
Roxy, M. K. et al. A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean. Geophysical Research Letters 43, 826–833, https://doi.org/10.1002/2015gl066979 (2016).
doi: 10.1002/2015gl066979
Huang, B., Xue, Y., Zhang, D., Kumar, A. & McPhaden, M. J. The NCEP GODAS Ocean Analysis of the Tropical Pacific Mixed Layer Heat Budget on Seasonal to Interannual Time Scales. Journal of Climate 23, 4901–4925, https://doi.org/10.1175/2010jcli3373.1 (2010).
doi: 10.1175/2010jcli3373.1
Pandey, V. K. & Kurtakoti, P. Evaluation of GODAS Using RAMA Mooring Observations from the Indian Ocean. Marine Geodesy 37, 14–31, https://doi.org/10.1080/01490419.2013.859642 (2014).
doi: 10.1080/01490419.2013.859642
Li, Y., Han, W., Hu, A., Meehl, G. A. & Wang, F. Multidecadal Changes of the Upper Indian Ocean Heat Content during 1965–2016. Journal of Climate 31, 7863–7884, https://doi.org/10.1175/jcli-d-18-0116.1 (2018).
doi: 10.1175/jcli-d-18-0116.1
Brodzik, M. J. & Armstrong, R. Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4. [Snow Cover Extent]. Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. Boulder (2013).
Xu, B. et al. Black soot and the survival of Tibetan glaciers. Proceedings of the National Academy of Sciences 106, 22114–22118, https://doi.org/10.1073/pnas.0910444106 (2009).
doi: 10.1073/pnas.0910444106
Garrison, D. L. et al. Microbial food web structure in the Arabian Sea: a US JGOFS study. Deep Sea Research II 47, 1387–1422 (2000).
doi: 10.1016/S0967-0645(99)00148-4
Al-Azri, A. et al. Seasonality of the bloom-forming heterotrophic dinoflagellate Noctiluca scintillans in the Gulf of Oman in relation to environmental conditions. International Journal of Oceans and Oceanography 2, 51–60 (2007).
Al-Hashmi, K. A. et al. Variability of dinoflagellates and diatoms in the surface waters of Muscat, Sea of Oman: comparison between enclosed and open ecosystem. International Journal of Oceans and Oceanography 8, 137–152 (2014).
Goes, J. I. & Gomes, H. An ecosystem in transition: the emergence of mixotrophy in the Arabian Sea In Aquatic Microbial Ecology and Biogeochemistry: A Dual Perspective (eds P. Glibert & T. Kana) 245 (Springer International Publishing, 2016).
Gomes, H. et al. Blooms of Noctiluca miliaris in the Arabian Sea–An in situ and satellite study. Deep Sea Research Part I 55, 751–765 (2008).
doi: 10.1016/j.dsr.2008.03.003
Lotliker, A. A. et al. Characterization of oceanic Noctiluca blooms not associated with hypoxia in the Northeastern Arabian Sea. Harmful Algae 74, 46–57, https://doi.org/10.1016/j.hal.2018.03.008 (2018).
doi: 10.1016/j.hal.2018.03.008
pubmed: 29724342
Prakash, S., Roy, R. & Lotliker, A. Revisiting the Noctiluca scintillans paradox in northern Arabian Sea. Current Science 113, 1429–1434 (2017).
doi: 10.18520/cs/v113/i07/1429-1434
Gomes, H. et al. Massive outbreaks of Noctiluca scintillans blooms in the Arabian Sea due to spread of hypoxia. Nature Communications 5, https://doi.org/10.1038/ncomms5862 (2014).
Gomes, H. et al. Influence of Light Availability and Prey Type on the Growth and Photo-Physiological Rates of the Mixotroph Noctiluca scintillans. Frontiers in Marine Science 5, https://doi.org/10.3389/fmars.2018.00374 (2018).
Chaghtai, F. & Saifullah, S. M. On the Occurrence of Green Noctiluca Scintillans Blooms in Coastal Waters of Pakistan, North Arabian Sea. Pakistan Journal of Botany 38, 893–898 (2006).
Baliarsingh, S. K. et al. Response of phytoplankton community and size classes to green Noctiluca bloom in the northern Arabian Sea. Marine Pollution Bulletin 129, 222–230, https://doi.org/10.1016/j.marpolbul.2018.02.031 (2018).
doi: 10.1016/j.marpolbul.2018.02.031
pubmed: 29680541
Sarma, V. V. S. S., Patil, J. S., Shankar, D. & Anil, A. C. Shallow convective mixing promotes massive Noctiluca scintillans bloom in the northeastern Arabian Sea. Marine Pollution Bulletin 138, 428–436, https://doi.org/10.1016/j.marpolbul.2018.11.054 (2019).
doi: 10.1016/j.marpolbul.2018.11.054
pubmed: 30660292
Xiang, C. et al. The key to dinoflagellate (Noctiluca scintillans) blooming and outcompeting diatoms in winter off Pakistan, northern Arabian Sea. Science of The Total Environment 694, 133396, https://doi.org/10.1016/j.scitotenv.2019.07.202 (2019).
doi: 10.1016/j.scitotenv.2019.07.202
pubmed: 31401512
Hansen, P. J., Miranda, L. & Azanza, R. Green Noctiluca scintillans: a dinoflagellate with its own greenhouse. Marine Ecology Progress Series 275, 79–87 (2004).
doi: 10.3354/meps275079
Wang, L., Lin, X., Goes, J. I. & Lin, S. Phylogenetic Analyses of Three Genes of Pedinomonas noctilucae, the Green Endosymbiont of the Marine Dinoflagellate Noctiluca scintillans, Reveal its Affiliation to the Order Marsupiomonadales (Chlorophyta, Pedinophyceae) under the Reinstated Name Protoeuglena noctilucae. Protist 167, 205–216, https://doi.org/10.1016/j.protis.2016.02.005 (2016).
Furuya, K. et al. Persistent whole-bay red tide of Noctiluca scintillans in Manila Bay, Philippines. Coastal Marine Science 30, 74–79 (2006).
Harrison, P. J. et al. Geographical distribution of red and green Noctiluca scintillans. Chinese Journal of Oceanology and Limnology 29, 807–831, https://doi.org/10.1007/s00343-011-0000-0 (2011).
doi: 10.1007/s00343-011-0000-0
Lachkar, Z., Lévy, M. & Smith, S. Intensification and deepening of the Arabian Sea Oxygen Minimum Zone in response to increase in Indian monsoon wind intensity. Biogeosciences Discuss. 2017, 1–34, https://doi.org/10.5194/bg-2017-146 (2017).
doi: 10.5194/bg-2017-146
Gomes, R. H. et al. Unusual Blooms of the Green Noctiluca miliaris (Dinophyceae) in the Arabian Sea during the Winter Monsoon In Indian Ocean: Biogeochemical Processes and Ecological Variability Vol. Geophysical Mongraph 185 AGU Book Series (eds J.D.Wiggert et al.) 347–363 (American Geophysical Union, 2009).
Lenton, T. M. & Watson, A. J. Redfield revisited: 1. Regulation of nitrate, phosphate, and oxygen in the ocean. Global Biogeochemical Cycles 14, 225–248, https://doi.org/10.1029/1999GB900065 (2000).
doi: 10.1029/1999GB900065
Mitra, A. et al. Defining Planktonic Protist Functional Groups on Mechanisms for Energy and Nutrient Acquisition: Incorporation of Diverse Mixotrophic Strategies. Protist 167, 106–120, https://doi.org/10.1016/j.protis.2016.01.003 (2016).
doi: 10.1016/j.protis.2016.01.003
pubmed: 26927496
Margalef, R. Life-forms of phytoplankton as survival alternatives in an unstable environment. Oceanologia Acta 1, 493–509 (1978).
Hinder, S. L. et al. Changes in marine dinoflagellate and diatom abundance under climate change. Nature Climate Change 2, 271–275, https://doi.org/10.1038/nclimate1388 (2012).
doi: 10.1038/nclimate1388
Barton, A. D., Finkel, Z. V., Ward, B. A. & Johns, D. G. & Follows, M. J. On the roles of cell size and trophic strategy in North Atlantic diatom and dinoflagellate communities. Limnol. Oceanogr. 58, 254–266, https://doi.org/10.4319/lo.2013.58.1.0254 (2013).
doi: 10.4319/lo.2013.58.1.0254
Yan, Y., Jebara, T., Abernathey, R., Goes, J. & Gomes, H. Robust learning algorithms for capturing oceanic dynamics and transport of Noctiluca blooms using linear dynamical models. PLOS ONE 14, e0218183, https://doi.org/10.1371/journal.pone.0218183 (2019).
doi: 10.1371/journal.pone.0218183
pubmed: 31194825
pmcid: 6564007
Al-Said, T., Naqvi, S. W. A., Al-Yamani, F., Goncharov, A. & Fernandes, L. High total organic carbon in surface waters of the northern Arabian Gulf: Implications for the oxygen minimum zone of the Arabian Sea. Marine Pollution Bulletin 129, 35–42, https://doi.org/10.1016/j.marpolbul.2018.02.013 (2018).
doi: 10.1016/j.marpolbul.2018.02.013
pubmed: 29680559
Alkire, S. et al. Multidimensional Poverty Measurement and Analysis. (Oxford University Press, 2015).
Chandy, L. No country left behind: the case for focusing greater attention on the world’s poorest countries. (Brookings Institution, Washington, DC., 2017).
Sumaila, U. R. & Bawumia, M. Fisheries, ecosystem justice and piracy: A case study of Somalia. Fisheries Research 157, 154–163, https://doi.org/10.1016/j.fishres.2014.04.009 (2014).
doi: 10.1016/j.fishres.2014.04.009
Stoecker, D. K., Hansen, P. J., Caron, D. A. & Mitra, A. Mixotrophy in the marine plankton. Annual Review of Marine Sciences 9, 311–335 (2017).
doi: 10.1146/annurev-marine-010816-060617
Ward, B. A. & Follows, M. J. Marine mixotrophy increases trophic transfer efficiency, mean organism size, and vertical carbon flux. Proceedings of the National Academy of Sciences 113, 2958–2963, https://doi.org/10.1073/pnas.1517118113 (2016).
doi: 10.1073/pnas.1517118113
Gorelick, N. et al. Google Earth Engine: Planetary-scale geospatial analysis for everyone. Remote Sensing of Environment 202, 18–27, https://doi.org/10.1016/j.rse.2017.06.031 (2017).
doi: 10.1016/j.rse.2017.06.031