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The ecology of the oxyscape in coastal ecosystems

  • Autores COPAS Coastal:
  • Sergio Navarrete
  • Fabián Tapia Jorquera
  • Autores: Marco Fusi, Fabrice Stephenson, Sergio A. Navarrete, Fabian J. Tapia, John L. Largier, Ramona Marasco, Theresa Rueger, Chancey MacDonald, Daniele Daffonchio, Miriam Fernandez, Evie A. Wieters, Jenny Booth, Matteo Daghio, Heather Sugden, Katarina Scaife, Darren M. Evans, Pippa Moore & Simone Baldanzi
  • Año: 2025
  • Línea de investigación: L1. Oceanic and atmospheric forcings
  • Línea de investigación: L2. Evolving coastal ecosystems
  • Unidad MOTOR: M1. Modelación
  • Publicación ISI: Indexed

Highligths:

Global warming, water stratification, and nutrient loading have driven coastal deoxygenation, resulting in loss of biodiversity and reduced ecosystem functioning.
Despite the threat to marine ecosystems worldwide, attention has focused mainly on large-scale patterns of ocean deoxygenation and the oceanographic and biogeochemical phenomena that explain them, but overlook the fine-scale, dynamic oxygen variability (the oxyscape) that characterises coastal environments.
Because climate change continues to alter coastal oxygen dynamics, it is imperative that its inherent spatial and temporal heterogeneity is well understood to inform meaningful management decisions for threatened coastal marine ecosystems.
A new conceptual model is necessary to redefine oxygen as both a density-independent and density-dependent ecological resource to predict organismal and ecosystem response to changing oxygen availability under global warming, and thus inform targeted management strategies.
Resumen:
Oxygen is vital for marine life. Despite global ocean deoxygenation, coastal oxygen dynamics are poorly understood. We synthesise the biological and mechanical processes that shape the coastal oxyscape and how organisms respond to it. Oxygen availability can determine species ecophysiology and affect population dynamics and ecological interactions. We propose a novel conceptual framework to reassess oxygen as a resource that is both density-independent and density-dependent, and identify spatial and temporal patterns of competition in coastal ecosystems. Our framework aims to (i) advance eco-evolutionary theory, (ii) improve species distribution models, (iii) inform effective conservation strategies, and (iv) enhance insight into coastal ecosystem-level responses to oxygen fluctuations, thereby advancing our understanding of environmental complexity under climate change, which in turn can guide management.
  • Palabras clave: Dinámica del oxígeno, fluctuaciones, ventilación, fotosíntesis/respiración, nicho, recursos, análisis de redes, distribución de especies híbridas, modelado, interacciones entre especies
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