Skip to main content

Elmer Quispe-Salazar

Elmer Quispe-Salazar

Marine quantitative ecologist · Fisheries scientist

I study changing marine populations and fisheries using statistical modelling, stock assessment, spatio-temporal analysis, and reproducible scientific computing.

Peru · Humboldt Current

Pelagic fisheries · Statistical ecology

Email ORCID Google Scholar GitHub LinkedIn CV

Research metrics

5ORCID works

3OpenAlex works

0Citations

0h-index

0i10-index

ORCID and OpenAlex · updated 07 Sep 2026. Google Scholar is linked for discovery and is not scraped.

Selectivity and demographic change in the anchovy fishery

Evaluating long-term changes in length selectivity, selection range, juvenile incidence, and demographic structure in the north-central Peruvian anchovy fishery.

Status: Active · Type: Manuscript-oriented project

Scientific question

Has the selectivity of the industrial anchovy fishery changed through time, and how are those changes associated with seasonality, fleet characteristics, management regimes, and the demographic structure of the stock?

Evidence base

The project combines paired acoustic-survey and fishing-season information, length-frequency distributions, vessel and season descriptors, regulatory periods, and biological reference information.

Methods

• Logistic selectivity models.
• Estimation of length at 50% selection and selection range.
• Mann–Kendall tests and Sen slopes for temporal trends.
• Structural-break and change-point analysis.
• Seasonal and regulatory-period comparisons.
• Length–age key evaluation and demographic interpretation.

Current status

Active manuscript and methodological development. The analysis evaluates long-term trends, seasonal contrasts, fleet-related differences, and changes in the exposure of juvenile fish to the fishery.

Expected outputs

• Long-term selectivity time series.
• Comparative length–age framework.
• Peer-reviewed manuscript on selectivity and demographic consequences.
• Reproducible code and diagnostic visualizations.

Repository architecture

A canonical paper repository will be linked here once its current structure and public status are verified. Until then, this page remains the stable public project record rather than pointing to a provisional or legacy repository.