{"id":1085,"date":"2019-12-13T10:59:50","date_gmt":"2019-12-13T09:59:50","guid":{"rendered":"http:\/\/blogs.exeter.ac.uk\/exetermarine\/?p=1085"},"modified":"2019-12-13T10:59:50","modified_gmt":"2019-12-13T09:59:50","slug":"ipcc-research-confidence-in-the-field-of-coral-reef-futures-jennifer-mcwhorter","status":"publish","type":"post","link":"https:\/\/sites.exeter.ac.uk\/exetermarine\/2019\/12\/13\/ipcc-research-confidence-in-the-field-of-coral-reef-futures-jennifer-mcwhorter\/","title":{"rendered":"IPCC Research Confidence in the field of Coral Reef Futures – Jennifer McWhorter"},"content":{"rendered":"

\"\"<\/strong><\/p>\n

Research Confidence in the field of Coral Reef Futures <\/strong><\/p>\n

(Based on IPCC 2019 Report, Chapter 5, Changing Ocean, Marine Ecosystems, and Dependent Communities<\/a>)<\/em><\/p>\n

Author, Jennifer McWhorter, PhD Candidate QUEX (Universities of Queensland and Exeter)<\/em><\/p>\n

The Intergovernmental Panel on Climate Change (IPCC) consists of a team of top researchers and scientists advising global climate action. Recently, the IPCC wrote a special report updating research findings pertaining to 1.5 \u2103 of warming, of particular interest to my field of research is the section on coral reefs. Based on Chapter 5 of the latest IPCC report (Bindoff, N.L et al., 2019), I have highlighted the consensus of scientific research by summarizing key topics of coral reef research by research confidence. In italics<\/i>\u00a0are statements summarized from the report.<\/p>\n

 <\/p>\n

Very High Confidence Overview of Research<\/strong><\/p>\n

Some alarming numbers on the future of coral reefs were confidently stated in the latest IPCC report, \u201ccoral reefs are projected to decline by a further 70-90% at 1.5 \u2103 with larger losses (>99%) at 2 \u2103 \u201d<\/em>. Since the industrial revolution in the 19th century, human activities have contributed to approximately 1.0 \u2103 of global warming. At our current rate of emissions, global warming is estimated to reach 1.5 \u2103 between 2030 and 2052. (IPCC, 2019: Summary for Policymakers). To give you some perspective on those numbers, future generations will have a difficult time finding coral reefs in the state in which we have had the privilege of experiencing them.<\/p>\n

\"\"
The corals in the image above were photographed two months apart showing the effect of the last warming event at Pixie Reef, just north of Cairns, on the Great Barrier Reef. On the left, the corals are healthy and then two months later, the image on the right shows many of the same corals are stressed and near mortality (bleached or white in colour). (Photo credit: Brett Monroe Garner)<\/figcaption><\/figure>\n

 <\/p>\n

High Confidence Overview of Research<\/strong><\/p>\n

When the human body has a weakened immune system, such as experiencing chemotherapy from cancer treatment, a common cold or flu can be detrimental, leading to a worsened state or even death. Coral reefs facing multiple disturbances such as warming and ocean acidification, reef dissolution and bioerosion, enhanced storm intensity, enhanced turbidity, and\/or enhanced run-off have a lower chance of recovery. In the future, when faced with multiple threats, there will be a shift in species composition and biodiversity. This shift will be towards soft corals and algal dominated reefs as opposed to reef building corals. Albeit, regional differences in levels of reef vulnerability exist on a scale of 100 km or by latitudinal gradients. <\/em><\/p>\n

\"\"
The image above portrays an example of the shift in dominance from reef building corals to a dominance of non-coral organisms, such as the pictured ascidian, Didemnum molle and algae in Palau, Micronesia. (Photo credit: Dr. Kennedy Wolfe)<\/figcaption><\/figure>\n

 <\/p>\n

Medium Confidence Overview of Research<\/strong><\/p>\n

Record breaking warm water temperatures during 2014-2017 resulted in severe and wide-spread global coral mortality (Eakin et al., 2019). The reefs that have survived this event have a higher thermal threshold resulting in a dominance of species that are not as sensitive and have a high adaptive capacity. <\/em>Is this a glimmer of hope? Perhaps but, it is important to note that this is the category of medium confidence of an overview of the research.<\/p>\n

\"\"
Branching corals are typically less resilient in warm water conditions than stony, non-branching corals (Hughes et al., 2018). This juvenile Acropora (branching coral) offers hope of recovery on a reef in Palau, Micronesia. (Photo credit: Dr. Kennedy Wolfe)<\/figcaption><\/figure>\n

In a physical world, the ocean is complex, different zones of the ocean experience various conditions in space and time. Coral reef habitats are not uniform. Deeper coral reefs (30-150m) and upwelling zones may serve as a refuge and source of larval supply to disturbed reefs. On the contrary, these reefs could be more at risk than suggested.<\/em><\/p>\n

Low Confidence Overview of Research<\/strong><\/p>\n

Coral reefs require certain light and temperature conditions in order to grow. The rate of sea level rise may outpace coral growth. <\/em>Sea level rise would send corals into deeper habitats potentially limiting these ideal light and temperature conditions.<\/p>\n

Resilience and adaptation is broadly still unknown, few reefs are showing resilience. <\/em>Luckily, some of the best in the world are working hard to close this gap.<\/p>\n

\"\"
In Palau, Micronesia, Professor Peter Mumby descends onto the reef. Pete\u2019s Marine Spatial Ecology Lab<\/a> conducts research into coral reef ecosystems, fisheries, modeling, and socioeconomics. (Photo credit: Dr. Kennedy Wolfe)<\/figcaption><\/figure>\n

Support climate change research initially by learning about it. Thank you for reading.<\/p>\n

You can follow Jen on\u00a0Twitter<\/a>\u00a0to keep up to date with her research!<\/em><\/p>\n

#ExeterMarine<\/em><\/strong>\u00a0is an interdisciplinary group of marine related researchers with capabilities across the scientific, biological,\u00a0 medical, engineering, humanities and social science fields.<\/em><\/p>\n

Find us on:\u00a0Facebook<\/a>\u00a0:\u00a0Twitter<\/a>\u00a0:\u00a0Instagram<\/a>\u00a0:\u00a0LinkedIn<\/a>\u00a0\u00a0<\/em><\/p>\n

I<\/strong><\/em>f you are interested in working with our researchers or students, contact\u00a0<\/strong><\/em>Michael Hanley<\/em><\/strong><\/a>\u00a0or\u00a0<\/em><\/strong>visit our website<\/em><\/strong><\/a>!<\/em><\/strong><\/p>\n

 <\/p>\n

References:<\/p>\n

Bindoff, N.L., W.W.L. Cheung, J.G. Kairo, J. Ar\u00edstegui, V.A. Guinder, R. Hallberg, N. Hilmi, N. Jiao, M.S. Karim, L.\u00a0Levin, S. O\u2019Donoghue, S.R. Purca Cuicapusa, B. Rinkevich, T. Suga, A. Tagliabue, and P. Williamson, 2019: Changing Ocean, Marine Ecosystems, and Dependent Communities. In: IPCC Special Report on the Ocean and Cryosphere in a\u00a0Changing Climate [H.-O. P\u00f6rtner, D.C. Roberts, V. Masson-Delmotte, P. Zhai, M. Tignor, E. Poloczanska, K.\u00a0Mintenbeck, A. Alegr\u00eda, M. Nicolai, A. Okem, J. Petzold, B. Rama, N.M. Weyer (eds.)]. In press.<\/p>\n

Eakin, C. Mark, Hugh PA Sweatman, and Russel E. Brainard. “The 2014\u20132017 global-scale coral bleaching event: insights and impacts.” Coral Reefs<\/em> 38.4 (2019): 539-545.<\/p>\n

Hughes, T. P., Kerry, J. T., Baird, A. H., Connolly, S. R., Dietzel, A., Eakin, C. M., … & McWilliam, M. J. (2018). Global warming transforms coral reef assemblages. Nature<\/em>, 556<\/em>(7702), 492.<\/p>\n

IPCC, 2019: Summary for Policymakers. In: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate [H.-O. Po\u0308rtner, D.C. Roberts, V. Masson-Delmotte, P. Zhai, M. Tignor, E. Poloczanska, K. Mintenbeck, A. Alegri\u0301a, M. Nicolai, A. Okem, J. Petzold, B. Rama, N.M. Weyer (eds.)]. In press.<\/p>\n","protected":false},"excerpt":{"rendered":"

Research Confidence in the field of Coral Reef Futures (Based on IPCC 2019 Report, Chapter 5, Changing Ocean, Marine Ecosystems, and Dependent Communities) Author, Jennifer […]<\/p>\n","protected":false},"author":773,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[139,153,159,179,309,385,427,441,443,581,585],"acf":[],"yoast_head":"\nIPCC Research Confidence in the field of Coral Reef Futures - Jennifer McWhorter - Exeter Marine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites.exeter.ac.uk\/exetermarine\/2019\/12\/13\/ipcc-research-confidence-in-the-field-of-coral-reef-futures-jennifer-mcwhorter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IPCC Research Confidence in the field of Coral Reef Futures - 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