Growth and production of the copepod community in the southern area of the Humboldt Current System

The study found that copepod biomass and production in the coastal upwelling zone off central-southern Chile decreased from 2004 to 2006, coinciding with a shift from large-sized to small-sized species and more persistent upwelling. While annual copepod production ranged from 24 to 52 g C m-2 year-1, the researchers suggest that increased wind-driven upwelling may lead to a negative trend in zooplankton biomass due to increased offshore advection.

• Copepod biomass (CB) and production (CP) were higher in the coastal upwelling zone (within 50 km) but showed a substantial decrease between 2004 and 2006. Annual CP was measured between 24 and 52 g C m-2 year-1, with a mean annual P/B ratio of 2.7.
• The decline in copepod biomass and production from 2004 to 2006 was linked to a change in community structure where small-sized species replaced large-sized forms, occurring alongside more persistent and extended upwelling.
• The study suggests that increased wind-driven upwelling in coastal systems may cause a negative trend in zooplankton biomass, potentially because extended upwelling increases the offshore advection of coastal plankton.

APA

Inter-American Institute for Global Change Research (2025). Growth and production of the copepod community in the southern area of the Humboldt Current System. https://iai.int/es/pub_acad/growth-and-production-of-the-copepod-community-in-the-southern-area-of-the-humboldt-current-system/

Chicago

Inter-American Institute for Global Change Research. Growth and production of the copepod community in the southern area of the Humboldt Current System. 2025. https://iai.int/es/pub_acad/growth-and-production-of-the-copepod-community-in-the-southern-area-of-the-humboldt-current-system/.

Wikipedia

{{cite report |author=Inter-American Institute for Global Change Research |title=Growth and production of the copepod community in the southern area of the Humboldt Current System |date=15 January 2025 |url=https://iai.int/es/pub_acad/growth-and-production-of-the-copepod-community-in-the-southern-area-of-the-humboldt-current-system/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{interamericaninstituteforglobalchangeresearch2025growth, author = {{Inter-American Institute for Global Change Research}}, title = {{Growth and production of the copepod community in the southern area of the Humboldt Current System}}, institution = {Inter-American Institute for Global Change Research}, year = {2025}, month = jan, url = {https://iai.int/es/pub_acad/growth-and-production-of-the-copepod-community-in-the-southern-area-of-the-humboldt-current-system/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }