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February 14, 2026EcographyOpen Access

Deep refuges: the distribution of marine fish in warming subtropics

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Authors

ATAnat TsemelCollege of MarinSMStephane MartinezUniversity-National Oceanographic Laboratory SystemSEShai EinbinderCollege of Marin

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Overview

Systematic evaluation of fish communities in the East Mediterranean Sea reveals adaptations to warming, suggesting important conservation insights.

Key Points

  • The aim is to evaluate the ‘deep-reef refugia’ hypothesis concerning fish communities in the east Mediterranean Sea which is facing rapid warming.
  • Surveyed fish across three rocky habitats: shallow (10 m), upper mesophotic (25 m), and lower mesophotic (45 m) depths.
  • Conducted surveys biannually from 2015 to 2022 using 357 belt transects to collect data.
  • Measured photosynthetically active radiation (PAR) and assessed species composition and diversity.
  • Shallow habitat species composition and functional diversity are included within deeper habitats.
  • Upper mesophotic community shows greater species diversity compared to shallow habitats.
  • Fish abundance decreases at mesophotic depths, yet a mixed community thrives in upper mesophotic areas.

Cite This Study

Tsemel et al. (2026) studied this question.

synapsesocial.com/papers/699011602ccff479cfe57f05https://doi.org/10.1002/ecog.08040
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Beyond the Surface: Mesophotic Reefs as Potential Refuges for Shallow Fish Assemblages2024
  2. 2Mesophotic animal forests of the Aegean Sea support fish diversity hotspots under high fishing pressure2026 · 1 citations
  3. 3Climate Change Drives Bathymetric Shifts in Taxonomic and Trait Diversity of Deep‐Sea Benthic Communities2025
  4. 4Seasonal dynamics of Mediterranean fish communities revealed by eDNA: Contrasting compositions across depths and Marine Fully Protected Area boundaries2024 · 13 citations
  5. 5Exploring reserve and depth refuge effects on marine fish communities: Insights from environmental <scp>DNA</scp> metabarcoding2025 · 2 citations