Severe Continental-Scale Impacts of Climate Change Are Happening Now: Extreme Climate Events Impact Marine Habitat Forming Communities Along 45% of Australia’s Coast

Babcock, Russell C.; Bustamante, Rodrigo H.; Fulton, Elizabeth A.; Fulton, Derek J.; Haywood, Michael D. E.; Hobday, Alistair J.; Kenyon, R.A.; Matear, Richard J.; Plagányi, Éva E.; Richardson, Anthony J.; Vanderklift, Mathew A.

doi:10.3389/fmars.2019.00411

Cited by 150 publications

(149 citation statements)

References 123 publications

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“…For instance, tide pools along the west coast of North America occur in a naturally high‐productivity region influenced by upwelling of cold, high CO 2 /low O 2 ocean water, which influence biogeochemistry in the intertidal (Chan et al, 2017; Silbiger & Sorte, 2018). In contrast, waters off eastern Australia are comparatively oligotrophic (Marshall et al, 2012; Roughan & Middleton, 2002) and are strongly influenced by the warm poleward flow of a major boundary current (Babcock et al, 2019; Oliver et al, 2018; Suthers et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Characterizing biogeochemical fluctuations in a world of extremes: A synthesis for temperate intertidal habitats in the face of global change

Wolfe

Nguyen

Davey

et al. 2020

Global Change Biology

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Coastal and intertidal habitats are at the forefront of anthropogenic influence and environmental change. The species occupying these habitats are adapted to a world of extremes, which may render them robust to the changing climate or more vulnerable if they are at their physiological limits. We characterized the diurnal, seasonal and interannual patterns of flux in biogeochemistry across an intertidal gradient on a temperate sandstone platform in eastern Australia over 6 years (2009–2015) and present a synthesis of our current understanding of this habitat in context with global change. We used rock pools as natural mesocosms to determine biogeochemistry dynamics and patterns of eco‐stress experienced by resident biota. In situ measurements and discrete water samples were collected night and day during neap low tide events to capture diurnal biogeochemistry cycles. Calculation of pHT using total alkalinity (TA) and dissolved inorganic carbon (DIC) revealed that the mid‐intertidal habitat exhibited the greatest flux over the years (pHT 7.52–8.87), and over a single tidal cycle (1.11 pHT units), while the low‐intertidal (pHT 7.82–8.30) and subtidal (pHT 7.87–8.30) were less variable. Temperature flux was also greatest in the mid‐intertidal (8.0–34.5°C) and over a single tidal event (14°C range), as typical of temperate rocky shores. Mean TA and DIC increased at night and decreased during the day, with the most extreme conditions measured in the mid‐intertidal owing to prolonged emersion periods. Temporal sampling revealed that net ecosystem calcification and production were highest during the day and lowest at night, particularly in the mid‐intertidal. Characterization of biogeochemical fluctuations in a world of extremes demonstrates the variable conditions that intertidal biota routinely experience and highlight potential microhabitat‐specific vulnerabilities and climate change refugia.

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Section: Discussionmentioning

confidence: 99%

Characterizing biogeochemical fluctuations in a world of extremes: A synthesis for temperate intertidal habitats in the face of global change

Wolfe

Nguyen

Davey

et al. 2020

Global Change Biology

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“…Climate change will impact on oyster reef restoration [36]. Projected ocean warming for the region (4°C) as well as contemporary marine heat waves, as seen in the region recently [39] are an important consideration for reef restoration efforts along the south-eastern coastline of Australia. Our study has shown that using thermal outfall as a proxy for ocean warming can be useful for predicting future warming.…”

Section: Discussionmentioning

confidence: 99%

“…South-eastern Australia receives warmer waters from the Coral Sea via the East Australian Current (EAC), which is strengthening [37, 38]. This region is considered a “hot spot”, as the rise in mean temperatures will be 3-4 times higher than the average for the world’s oceans and is also prone to marine heat waves [7,38,39].…”

Section: Introductionmentioning

confidence: 99%

Can early exposure to stress enhance resilience to ocean warming in two oyster species?

Pereira

Scanes

Gibbs

et al. 2020

Preprint

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7Securing economically and ecologically significant molluscs, as our oceans warm and acidify 8 due to climate change, is a global priority. South eastern Australia receives warm water in a 9 strengthening East Australia Current and so resident species are vulnerable to elevated 10 temperature and marine heat waves. This study tested whether oysters pre exposed to 11 elevated temperature or heat stress enhances resilience to ocean warming later in life. Two 12 Australian species, the flat oyster, Ostrea angasi, and the Sydney rock oyster, Saccostrea 13 glomerata, were given a mild dose of warm water or "heat shock" stress in the laboratory 14 and then transferred to elevated temperature conditions where we used the thermal outfall 15 from power generation as a proxy to investigate the impacts of ocean warming. Shell 16 growth, condition index, lipid content and profile and survival of oysters was impacted by 17 elevated temperature in the field, with flat oysters being more impacted than Sydney rock 18 oysters. Flat oysters grew faster than Sydney rock oysters at ambient temperature, but were 19 more sensitive to elevated temperature. Early exposure to heat stress did little to 20 ameliorate the negative effects of increased temperature, although the survival of heat 21 shocked flat oysters was greater than non-heat shocked oysters. Further investigations are 22 required to determine if early exposure to heat stress can act to inoculate oysters to future 23 stress and overall enhance resilience of oysters to ocean warming. 24 45

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“…Untreated water effluents in fresh water are a big challenge for the aquaculture industries. Also, temperature extremes are a serious issue for marine biodiversity [57] .…”

Section: Aquaculturementioning

confidence: 99%

“…These contrast with diet choice, animal health, worker lifestyle, and social and economic conditions, which are considered as non-environmental issues. Food processing has fewer environmental impacts than farming [73] , because processors are regulated by law or respond to their own interest based on reports and surveys from the food chain to reduce inputs, energy, and water that has cost savings advantages and consequent environmental benefits [57] .…”

Section: Food Processingmentioning

confidence: 99%

Development and challenges of green food in China

Hassan¹,

Wen²,

Xu³

et al. 2020

Front. Agr. Sci. Eng.

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Green food in China refers to a wide array of primary and processed agricultural products that are safe, nutritious and of high quality for human consumption. Green food has been certified and produced following the principle of sustainability since the 1990s, making historic achievements in providing quality food, protecting the environment, increasing farmer income, and nurturing agricultural brands over the past 30 years in China. Today, the green food industry enters a steady-growth stage in terms of cultivation area, product number and sales. This article summarizes the history of the development of green food in China and current achievements, analyze major challenges that may hamper further development of the industry, and propose strategies to address these challenges, i.e., optimization of the food supply chain, deep food processing, and utilization of food wastes.

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Severe Continental-Scale Impacts of Climate Change Are Happening Now: Extreme Climate Events Impact Marine Habitat Forming Communities Along 45% of Australia’s Coast

Cited by 150 publications

References 123 publications

Characterizing biogeochemical fluctuations in a world of extremes: A synthesis for temperate intertidal habitats in the face of global change

Characterizing biogeochemical fluctuations in a world of extremes: A synthesis for temperate intertidal habitats in the face of global change

Can early exposure to stress enhance resilience to ocean warming in two oyster species?

Development and challenges of green food in China

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