Assessment of warm-water coral reef tipping point thresholds DOI Creative Commons
Paul Pearce‐Kelly,

Andrew H. Altier,

John F. Bruno

et al.

Published: Jan. 2, 2024

Abstract. Warm-water coral reefs are facing unprecedented Anthropogenic driven threats to their continued existence as biodiverse, functional ecosystems upon which hundreds of millions people rely. Determining the tipping point thresholds reef requires robust assessment multiple stressors and interactive effects. We draw a literature search recent Global Tipping Points Revision initiative consider warm-water ecosystem threshold sensitivity. Considering observed projected stressor impacts we recognise global mean surface temperature (relative pre-industrial) 1.2 °C (range 0.7–1.5 °C) an atmospheric CO2 warming 350 ppm 326–400 ppm), whilst acknowledging that interacting stressors, ocean response time, overshoot cascading have yet be sufficiently assessed but likely lower this threshold. These uncertainties around sensitivities for such crucially important underlines imperative and, in case knowledge gaps, employing precautionary principle favouring range values.

Language: Английский

Thermal modelling and stability analysis of power generation cabin for Antarctica plateau DOI
Hongcai Chen, Meng Xu, Zihan Zhang

et al.

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 125899 - 125899

Published: Feb. 1, 2025

Language: Английский

Citations

1
Greenhouse Gas and Climate Change DOI
Daniel J. Soeder

Energy futures., Journal Year: 2025, Volume and Issue: unknown, P. 97 - 141

Published: Jan. 1, 2025

Language: Английский

Citations

1
The future extent of the Anthropocene epoch: A synthesis DOI Creative Commons
Colin Summerhayes, Jan Zalasiewicz, Martin J. Head

et al.

Global and Planetary Change, Journal Year: 2024, Volume and Issue: unknown, P. 104568 - 104568

Published: Sept. 1, 2024

Language: Английский

Citations

8
Response of a Terrestrial Polar Ecosystem to the March 2022 Antarctic Weather Anomaly DOI Creative Commons
J. Barrett, Byron J. Adams, Peter T. Doran

et al.

Earth s Future, Journal Year: 2024, Volume and Issue: 12(8)

Published: July 31, 2024

Abstract Record high temperatures were documented in the McMurdo Dry Valleys, Antarctica, on 18 March 2022, exceeding average for that day by nearly 30°C. Satellite imagery and stream gage measurements indicate surface wetting coincided with this warming more than 2 months after peak summer thaw likely exceeded thresholds rehydration activation of resident organisms typically survive cold dry conditions polar fall a freeze‐dried state. This weather event is notable both timing magnitude when 0°C at time biological communities streams have entered persistent frozen Such events may be harbinger future climate characterized warmer greater region which could influence distribution, activity, abundance sentinel taxa. Here we describe ecosystem responses to anomaly reporting meteorological hydrological across later observations from Canada Stream, one most diverse productive ecosystems within Valleys.

Language: Английский

Citations

5
Southern Ocean food-webs and climate change: A short review and future directions DOI Creative Commons
José P. Queirós, Renato Borras‐Chavez, Noémie Friscourt

et al.

PLOS Climate, Journal Year: 2024, Volume and Issue: 3(3), P. e0000358 - e0000358

Published: March 11, 2024

Food-webs are a critical feature of ecosystems and help us understand how communities will respond to climate change. The Southern Ocean is facing rapid accelerating changes due Though having evolved in an isolated somewhat extreme environment, biodiversity food-webs among the most vulnerable. Here, we review 1) current knowledge on food-webs; 2) methods study 3) assessment future impacts change 4) gaps; 5) role Early Career Researchers (ECRs) studies. Most come from pelagic both at macro- microbial levels. Modelling diet studies individual species major contributors food-web knowledge. These revealed short food-web, predominantly sustained by Antarctic Krill ( Euphausia superba ). Additionally, alternative pathways exist, involving other krill species, fish, squid, which play equally important roles connecting primary producers with top predators. Advantages disadvantages several techniques used were identified, classical analyses stomach contents, scats, or boluses recent approaches such as metabarcoding trophic-biomarkers. Observations show that can impact different ways. As example, smaller phytoplankton lengthen increasing assimilation losses and/or changing nutrient cycles. Future need focus benthic-dominated benthopelagic coupling. Furthermore, research during winter season below ice-shelves needed these areas may crucial functioning this ecosystem. ECRs significant advancing their willingness for interdisciplinary collaboration proficiency employing various methodologies, contributing construction high-resolution food-webs.

Language: Английский

Citations

4
Deep-living and diverse Antarctic seaweeds as potentially important contributors to global carbon fixation DOI Creative Commons
Leigh W. Tait, Caroline Chin, Wendy A. Nelson

et al.

Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)

Published: April 17, 2024

Abstract Global models predict that Antarctica has little suitable habitat for macroalgae and Antarctic therefore make a negligible contribution to global carbon fixation. However, coastal surveys are rare at southern polar latitudes (beyond 71° S), here we report diverse abundant macroalgal assemblages in un-navigated habitats of the Ross Sea from 71.5°–74.5° S. We found extensive living depths >70 m specimens crustose coralline algae as deep 125 m. Using light modelling published photosynthetic rates estimate may contribute between 0.9–2.8 % Combined, this suggests be greater contributor fixation possibly sequestration than previously thought. The vulnerability these environments climate change, especially shifting sea ice extent persistence, could influence Southern Ocean long-term sequestration.

Language: Английский

Citations

4
Antarctic benthic ecological change DOI
Huw J. Griffiths, Vonda J. Cummings, Anton Van de Putte

et al.

Nature Reviews Earth & Environment, Journal Year: 2024, Volume and Issue: 5(9), P. 645 - 664

Published: Sept. 3, 2024

Language: Английский

Citations

4
Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula) DOI Creative Commons
Dolores Deregibus, María Liliana Quartino,

Eduardo Ruiz Barlett

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 960, P. 178249 - 178249

Published: Jan. 1, 2025

Language: Английский

Citations

0
Assessing the role of production capacity in mitigating carbon emissions: a case study of Algeria DOI Open Access
Bouazza Elamine Zemrı,

Mohammed Fouad Gassem

Brazilian Journal of Business, Journal Year: 2025, Volume and Issue: 7(1), P. e76672 - e76672

Published: Jan. 10, 2025

This study examines the relationship between productive capacity and CO2 emissions in Algeria, addressing pressing challenge of sustainable development context climate change. The aim is to explore how enhancing production can influence environmental outcomes, particularly terms carbon emissions. To achieve this, employs an Auto Regressive Distributed Lag (ARDL) model, with results validated through Error Correction Model (ECM), using data from 1990 2023. findings reveal that improvements contribute a long-term reduction per capita. However, increase energy consumption has potential undermine these gains, underlining need for greater efficiency. Key policy recommendations suggest prioritizing investments energy-efficient technologies, thereby Algeria’s while minimizing impact. framework provides valuable pathway aligning economic growth practices, offering actionable insights policymakers aiming balance goals.

Language: Английский

Citations

0
Marine heatwaves and changes in macroalgae richness and composition from Antarctic Peninsula and South Shetland Islands: concise review DOI Creative Commons
Franciane Pellizzari,

Kátia Christol Dos Santos,

Vanessa Sayuri Osaki

et al.

Anais da Academia Brasileira de Ciências, Journal Year: 2025, Volume and Issue: 97(1)

Published: Jan. 1, 2025

The emerging global events of Marine Heatwaves (MHW), including those in Antarctica, are generally caused by large-scale meteorological and oceanographic changes responsible for rapid warming, but with lasting consequences marine communities worldwide. Several abiotic features, such as surface seawater temperature (SST), salinity, pH, nutrients, ice dynamic limit the reproduction, growth distribution macroalgae, which sensitive to abrupt oscillations these features resulting polar assemblages. This review compiled related MHWs spatial data from South Shetland Islands (SSI), Eastern Western Antarctic Peninsula (EAP/WAP), discussing seaweed assemblages possible responses on composition, richness, well species expansion retreat. Additionally, we present an updated checklist macroalgal taxa WAP. showed a clear enhance SSI, when compared EAP Also, this coincides increase richness distributional along last decade. Changes sentinel constitute warning biota. Besides, expands current knowledge detects gaps phycological conservation studies their connections facing climate change.

Language: Английский

Citations

0