Deep-Sea Benthic Community Response to Oxygen Minimum Layer and ENSO Effects

SCIOPS collected data on deep-sea benthic communities (meio- and macrofauna) from two depth transects off Concepcion and Callao, Peru. The dataset investigates the response of these communities to the Oxygen Minimum Layer and the effects of the 1997-1998 El Niño and the ENSO cycle. The study tested the hypothesis that communities within the OML have lower diversity and biomass compared to areas with higher oxygen levels.

Use Cases

• Modeling benthic community diversity based on depth and oxygen levels.
• Analyzing the relationship between sedimentary organic content and faunal biomass.
• Investigating the impact of ENSO cycles on shelf and bathyal zone communities.

Strengths

• Data was collected from two distinct depth transects (120-180m and 305-2000m).
• Study design accounts for multiple environmental factors: depth, organic content, and oxygenation.
• Investigates a specific temporal event (the 1997-1998 El Niño).

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

SCIOPS

Collection Method

Data collected from two depth transects off Concepcion and Callao, Peru.

Time Range

Includes data related to the 1997-1998 El Niño event.

Freshness

Last updated date is unknown.

Geography

Bathyal zone off Concepcion and Callao, Peru, in the Humboldt current system.