Small pelagic fish (SPF) play extremely important ecological roles in marine ecosystems,
form some of the most economically valuable fisheries resources, and play a vital role in …

1Center for Applied Research on the Environment and Sustainability, The American
University in Cairo, Cairo, Egypt 2Department of Animal Production, Faculty of Agriculture …

The tropical ocean off the west coast of South America is notable for several reasons. First, it
is unusually cool for an ocean that is so close to the equator with sea surface temperatures …

Background Oxygen minimum zones (OMZs) are expanding in the World Ocean as a result
of climate change and direct anthropogenic influence. OMZ expansion greatly affects …

Abstract Every 2–7 years, El Niño events trigger a strong decrease in phytoplankton
productivity off Peru, which profoundly alters the environmental landscape and trophic chain …

Here we present first observations, from instrumentation installed on moorings and a float, of
unexpectedly low (< 2 μmol kg− 1) oxygen environments in the open waters of the tropical …

The eastern Pacific jumbo squid (Dosidicus gigas) is one of the largest and most abundant
squid of the world ocean. To reveal possible interannual variability in the life span, statoliths …

An understanding of the vertical movements of elasmobranchs across their range is crucial
to defining critical habitat use, its overlap with anthropogenic activities and subsequently …

The El Niño of 1997–98 was one of the strongest warming events of the past century; among
many other effects, it impacted phytoplankton along the Peruvian coast by changing species …

The northern Humboldt Current upwelling system (HCS) belongs to the most productive
marine ecosystems, providing five to eight times higher fisheries landings per unit area than …