Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Jun 23;7:4180. doi: 10.1038/s41598-017-03926-z

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Environmental correlation of anchovy abundance. Top panels: spatial representation of PC1 scores in the Northern (a) and Southern (b) areas of the Central-Southern Tyrrhenian Sea. Colours represent PC1 scores, according to the ranges identified in QI analysis (bottom panels; c and d). In the northern sector the red and orange sectors represent the most “favourable” areas for anchovy, while the light blue and blue ones represent avoided sectors. Black lines represent the acoustic survey design. Bottom panels: QI analysis results, highlighting the response (selection, avoidance, tolerance) of anchovy population to the identified environmental processes (PCA) in the Northern (c) and Southern (d) areas. Dashed lines identify the upper and lower confidence intervals of the QI curve (solid line). QI values higher than 1 and above the upper confidence interval identify a “selective” behaviour, while QI values lower than 1 and below the lower confidence interval indicate “avoidance” behaviour. “Tolerance” behaviour is in between. Maps in Fig. 5 were generated using QGis software v.2 (Quantum GIS Development Team, 2013).