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| Main Authors: | , |
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| Format: | Recurso digital |
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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.18073029 |
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Table of Contents:
- <p><span>Monitoring acute environmental disturbances in mangrove ecosystems poses significant challenges due to substrate complexity and logistical constraints. This study introduces the Burrow Activity Ratio (BAR) as a novel, non-invasive bio-indicator for rapid assessment of hydrocarbon contamination. Field investigations were conducted in a tropical mangrove system following an acute oil spill, utilizing a comparative framework between disturbed and reference sites. Three distinct biological metrics were evaluated: (1) the BAR of brachyuran crabs, (2) a Gastropod Sentinel Indicator System (GSIS), and (3) a Biofilm Damage Index (BDI). Our results demonstrate that hydrocarbon exposure induced a significant suppression in faunal vigor, with BAR declining from 77.9% to 55.3% (p = 0.0057). Concurrently, mollusk density plummeted from 144 to 55 individuals per plot (p = 0.016), accompanied by severe degradation of pneumatophore-associated biofilms. The high sensitivity and statistical significance of BAR suggest its efficacy as a robust early-warning tool. This research provides a cost-effective, real-time monitoring proxy that bridges the gap between chemical analysis and ecological impact assessment in sensitive intertidal zones.</span></p>