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Overcoming Shifting Baselines: Paleo-Behaviour Reveals Industrial Revolution as Tipping Point.
Glob Chang Biol
January 2025
School of Science, Auckland University of Technology, Auckland, New Zealand.
Human activities have significantly altered coastal ecosystems worldwide. The phenomenon of shifting baselines syndrome (SBS) complicates our understanding of these changes, masking the true scale of human impacts. This study investigates the long-term ecological effects of anthropogenic activities on New Zealand's coastal ecosystems over 800 years using fish otolith microchemical profiling and dynamic time warping across an entire stock unit.
View Article and Find Full Text PDFEnvironmental tipping points for global soil nitrogen-fixing microorganisms.
iScience
January 2025
Key Laboratory for Environmental Factors Control of Agro-product Quality Safety (Ministry of Agriculture and Rural Affairs), Tianjin Key Laboratory of Agro-environment and Safe-product, Institute of Agro-environmental Protection, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
Nitrogen-fixing microorganisms (NFMs) are important components of soil N sinks and are influenced by multiple environmental factors. We established a random forest model optimized by the distributed delayed particle swarm optimization (RODDPSO) algorithm to analyze the global NFM data. Soil pH, organic carbon (OC), mean annual precipitation (MAP), altitude, and total phosphorus (TP) are factors with contributions greater than 10% to NFMs.
View Article and Find Full Text PDFThe concepts of irreversibility and reversibility in research on anthropogenic environmental changes.
PNAS Nexus
January 2025
Philosophy Group, Section CPTE (Communication, Philosophy, Technology, and Education), Wageningen University & Research, 6706 KN Wageningen, Netherlands.
The concept of "irreversibility" and its counterpart "reversibility" have become prominent in environmental and ecological research on human-induced changes, thresholds, climate tipping points, ecosystem degradation, and losses in the cryosphere and biosphere. Through a systematic literature review, we show that in these research fields, these notions are not only descriptive terms, but can have different semantic functions and normative aspects. The results suggest that, in the context of environmental and ecological research the concepts of irreversibility and reversibility have taken on additional usages in comparison to their contexts in theoretical thermodynamics and mechanics.
View Article and Find Full Text PDFEndothelial METAP1: Tipping the Angiogenic Scales in Postpartum Preeclampsia.
Circ Res
January 2025
Department of Medicine, Division of Clinical Pharmacology; and Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN (M.R.A.).
Exploring the Interface Between Planetary Boundaries and Palaeoecology.
Glob Chang Biol
January 2025
Geography and Environmental Science, University of Southampton, Southampton, UK.
The concepts of planetary boundaries are influential in the sustainability literature and assist in delineating the 'safe operating spaces' beyond which critical Earth system processes could collapse. Moving away from our current trajectory towards 'hothouse Earth' will require knowledge of how Earth systems have varied throughout the Holocene, and whether and how far we have deviated from past ranges of variability. Such information can inform decisions about where change could be resisted, accepted or where adaptation is inevitable.
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