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of 240 m, allowing for the measurement of temperature, velocity, and pressure at various heights above the seafloor. ## Internal Waves and Turbulence Internal waves, generated by the interaction of tides with the steep seamount, were observed in the study area. These waves play a crucial role in mixing water masses and transporting nutrients, heat, and dissolved gases in the ocean. Turbulence, caused by the breaking of internal waves as they interact with the seamount, was also measured and analyzed. ## Impact on Marine Life The presence of internal wave-induced turbulence has significant implications for marine ecosystems near the equator. Nutrient mixing and vertical transport, driven by the turbulence, can influence phytoplankton growth, fish distribution, and overall biodiversity in the area. Understanding these dynamics is essential for conservation and management efforts. ## Modeling and Future Research Van Haren's research includes modeling the observed internal wave-induced turbulence to improve our understanding of its behavior and impacts. Further studies are planned to investigate how variations in seamount characteristics, such as height and shape, affect turbulence generation and propagation. This research will contribute to a better understanding of ocean dynamics and their role in global climate systems. In conclusion, the research conducted by Hans van Haren sheds light on the complex interactions between internal waves, turbulence, and marine ecosystems near equatorial seamounts. By studying these dynamics, we can better appreciate the role of the ocean in global climate regulation and biodiversity maintenance.

Is the Genetic Diversity of the Great Barrier Reef the Key to Its Survival? 🌊🪸 New research from Southern Cross University is offering hope for coral reef survival amidst climate change. Here's what we’re learning: 🧬 Heat-Tolerant Corals Found Across the Great Barrier Reef A study of over 500 coral colonies across 17 reefs revealed significant genetic diversity in heat tolerance, showing that some corals are more resilient to rising ocean temperatures than others. 🌡️ Potential for Adaptation Lead researcher Melissa Naugle highlights that the presence of heat-tolerant corals across the reef is crucial for both the protection and restoration of these ecosystems, especially as the Great Barrier Reef faces its fourth global mass bleaching event. 🔬 Genetic Variation Fuels Resilience Co-author Dr. Line Bay from the Australian Institute of Marine Science stresses that genetic differences in corals are key to future adaptation, enabling natural selection to produce more heat-tolerant generations. 🌿 A Promising Path for Restoration The study contributes to the Reef Restoration and Adaptation Program (RRAP), which may use selective breeding to accelerate adaptation and produce coral offspring better suited to warmer waters. 🌍 The Need for Action on Climate Change While this research is promising, the study underscores that reducing greenhouse gas emissions is still critical to securing a sustainable future for coral reefs globally. This breakthrough offers hope, but it’s clear that genetic resilience alone won’t be enough. Continued efforts to mitigate climate change and restore reefs are essential to ensure these ecosystems thrive for generations to come. 🌍💚 ♻️ Repost if you agree and want others to learn about coral's future too 🪸 #MarineConservation #CoralReefs #ClimateAction #GeneticDiversity #Restoration #GreatBarrierReef #Sustainability #ReefProtection

Researchers at La Trobe University's Center for Freshwater Ecosystems have exposed the hidden consequences of climate change on Alpine stream ecosystems, which could see an earlier emergence of insects. The study, now published in Global Change Biology, and led by Senior Lecturer in Environment and Genetics Dr. Michael Shackleton, focused on streams around Falls Creek and projected significant alterations in water temperatures from climate warming and its impact on aquatic life. It was found that the rate at which temperature accumulates over the years will increase, which likely influences how organisms grow and develop. "These shifts may have significant impacts on aquatic organisms, particularly those emerging from alpine streams in Autumn and the food webs they service," Dr. Shackleton said. "In the future, late-season organisms might emerge from river systems into air temperatures up to 12 degrees higher than what they currently experience. "As a result, we expect insects, in particular, will emerge earlier in the year because they will have gained enough heat energy to become adults earlier on." Researchers used sophisticated modeling techniques and analyzed past water temperature data to predict future stream water temperatures under climate change scenarios. The study urgently calls for proactive conservation efforts to mitigate the impacts of climate change on vulnerable ecosystems. "As warmer climates influence the metabolism of insects, the availability of food resources and egg-laying locations, and reproductive potential, there are profound implications for ecosystem structures and function," Dr. Shackleton said. "Aquatic species maturing and moving on to land represents an important flux of energy and nutrients, however changes to the life cycle of varying animals may separate predator to prey interactions. "This earlier emergence of insects is just one example of how climate change is reshaping our natural world."

« The discovery of highly adaptable peatland microbes advances our understanding of microbial diversity and underscores the resilience of life in extreme environments. These microbes represent a key piece of the puzzle in addressing global climate challenges, showing how the tiniest organisms can have an outsized impact on Earth's systems. This research, supported by the National Science Foundation, marks a significant step forward in understanding the critical role of tropical peatlands and their microbial inhabitants in global carbon cycling. As climate change continues to reshape our planet, these hidden ecosystems hold lessons that may help safeguard our future. Cadillo-Quiroz and his team plan to use this microbial and ecological knowledge for tropical peatlands management and restoration in their future work, which can be followed here. "Working to understand microbes and ecosystems in the lush and magnificent Amazon rainforest is the honor of my life, which I aim to use in the protection of this region in the fight against climate change," Cadillo-Quiroz says. » By Richard Harth Arizona State University 26 janvier 2025

🌊📉 New Paper Alert! "Migrating is Not Enough for Modern Planktonic Foraminifera in a Changing Ocean" published Open Access in Nature🧵👇 Led by Sonia Chaabane, a plankton ecologist from CEREGE. Rising CO₂ emissions are driving ocean warming and acidification. These changes put stress on marine life, especially calcifying species like planktonic Foraminifera. So, how are they adapting to this unprecedented change? 🐚 Using a century of data from FORCIS, a global plankton census, we tracked shifts in Foraminifera migration. Not only are they moving poleward, but many are also migrating vertically within the water column. This 3D adaptation is novel and complex. 📈🌍 Our data show a 24% decrease in Foraminifera abundance over the last 80 years. For some species, poleward migration helps them cope. But these shifts are creating a biodiversity squeeze at the Equator, with warming low-latitude waters losing diversity. 🧬 By modeling future conditions, we found that low-latitude Foraminifera species will face conditions beyond their tolerance limits by 2050-2100. Poleward migration may allow some survival, but many species won't thrive, leading to a biodiversity loss. 🔬 The vertical migration patterns are observed for few species in recent decades, likely to avoid warming surface waters. But this migration is slower than the pace of ocean warming. 📊 A stark takeaway? Migration isn't enough. As climate change speeds up, the ability of planktonic Foraminifera to track these changes falls short. Adaptation at these rates may be impossible, underscoring a risk of collapse in certain marine ecosystems. 🌎 Our findings reveal the limits of plankton resilience in the face of rapid climate change. Supporting marine conservation and climate action is vital for ensuring ocean biodiversity and stability in an era of accelerating change. 🌍🌊 For more, read the full paper in Nature! 📜 https://lnkd.in/dWuBit_m

Source: (Proceedings. Biological sciences) Tropical soil and leaf litter fauna exhibit significant declines in diversity and order-level richness due to experimental warming over three years, particularly during dry seasons. While total abundance increased, this was driven by a few thermophilic taxa, notably oribatid mites, leading to shifts in community composition. The study underscores climate change's impact on tropical biodiversity and its implications for soil functions and biogeochemical cycles.

🌳 New research on tree longevity offers insights for climate change mitigation Trees are some of the longest-living organisms on Earth, yet their lifespan and survival strategies remain a mystery. A new study from ETH Zürich, published in Science Magazine, reveals surprising patterns in tree longevity across the Americas, providing valuable insights for biodiversity conservation and climate change efforts. Led by the Crowther Lab | ETH Zurich, this research was developed by an international team of over 100 scientists and based on millions of data points! 🌍 👉🏻 Discover the key findings here: https://go.ethz.ch/10 #ClimateChange #Biodiversity #Sustainability #TreeLongevity

Researchers Say A Massive Deadly Zone in the Ocean is Growing It creates conditions so acidic that it dissolves shells and skeletons, and it could make up half of the global ocean by the end of the century. The deep ocean harbors an expanding acidic zone where high pressure and low temperature create conditions that dissolve calcium carbonate, a crucial material for marine animals' shells. This area, which is known as the carbonate compensation depth (or CCD), is growing due to rising carbon dioxide levels in the ocean, which is making the water more acidic. This phenomenon, coupled with ocean acidification at the surface, is shrinking the habitable space for marine life from both the top and the bottom, making it difficult for creatures to survive under such harsh acidic conditions. Recent studies have revealed that the CCD serves as a biological boundary, creating distinct habitats above and below it. Above the CCD, organisms with calcified shells or skeletons like soft corals, brittle stars, and mussels, thrive, while below it, sea anemones, sea cucumbers, and octopuses are more abundant. The under-saturated, more acidic habitat below the CCD currently limits life in 54.4 million square miles of the ocean and could expand by another 13.5 million square miles with a 980-foot rise. The expansion of this acidic zone will have varying impacts on different regions and countries, with island nations being the most affected. It's remarkable that nearly half of the deep sea is already acidic, and this proportion could increase to half by the end of the century. The rising acidity of our oceans serves as a stark reminder of the pressing need to combat climate change and its devastating impact on marine ecosystems. Learn More: https://lnkd.in/eC9Wuqi6 Image: Lee Bryant/The Conversation

Microorganisms live everywhere on Earth. Understanding microorganisms is key to understanding not only the surrounding ecosystem, but also the future global environment. How are the tiny and invisible microogranisms linked to the climate change? We talked to Prof. Manabu Fukui (Institute of Low Temperature Science) on the discovery and functions of microorganisms in the cryosphere. Watch the full 15 questions video on our YouTube channel (EN/JP subtitles) 🎥 https://bit.ly/4fpOqb6 Find out more from our special feature on “Understanding the Impact of Climate Change.” 🌏 https://bit.ly/4eohm3P #HokkaidoUniversity #北海道大学 #北大 #research #science #cryosphere #microogranism #biology #climatechange #globalwarming #climate #environment #ecosystem #snow #lake

Source: Frontiers in plant science Climate change promotes the expansion of three Eucalyptus species in China, with a study using the MaxEnt model revealing their potential distributions under current and future climate scenarios (2041-2080). Eucalyptus grandis is sensitive to coldest quarter temperatures; Eucalyptus urophylla to warmest quarter precipitation; and Eucalyptus tereticornis to annual temperatures. All three species are expected to expand their suitable ranges, emphasizing the impact of climate change on Eucalyptus management and plantation site selection.