In recent decades, declining calcium concentrations have been reported throughout lakes across the southern edge of the Canadian Shield. This raises concern as Daphnia populations have shown to be decreasing as they require calcium not only for survival but to mitigate predation…
Zooplankton play an important trophic role in estuarine ecosystems by transferring energy from phytoplankton and other primary producers to higher levels of the food web. Changes in prey assemblage and environmental factors, such as temperature and salinity, can influence zoopla…
Oxygen minimum zones (OMZs) are areas in which midwater oxygen concentration can be significantly lower than in non OMZ areas at comparable depths. OMZs are of great interest because of the limits oxygen availability places on life. The potential for OMZ expansion with warming o…
This research was conducted to update previous studies of the springs of the Kingdom of Saudi Arabia. Approach: Revisit every spring that was recorded previously to ascertain the current status, water quality and zooplankton communities. Results: fourteen springs out of forty si…
Introduction to Zooplankton -- Adaptations to Planktonic Life -- Feeding -- Locomotion -- Vertical Migrations -- Defense -- Adaptations of Planktonic Larvae -- Factors Affecting Zooplankton Distribution -- Plankton Distribution and Ocean Currents -- Coastal Waters -- Thermocline…
Beautifully illustrated, this is the only identification guide to zooplankton of the Atlantic and Gulf Coasts. Zooplankton are critical to the vitality of estuaries and coastal waters. In this revised edition of Johnson and Allen's instant classic, readers are taken on a tour of…
The aim of this study was to investigate the composition of an acoustic scattering layer in the North Sea that is particularly strong at 38 kHz. A full definition of the biological composition of the layer, along with its acoustic properties, would allow for it to be confidently…
As the biomass of jellyfish (medusae of the Scyphozoa and Hydrozoa) has risen in numerous locations worldwide, awareness of their potential to exert a controlling influence on marine ecosystems and hinder the recruitment of fish stocks has increased. Medusae are capable of inten…
Pteropods (pelagic snails) are ubiquitous zooplankton in the Southern Ocean and abundant along the Western Antarctic Peninsula (WAP), one of the most rapidly warming regions on the planet. They are important prey for higher trophic levels, grazers of phytoplankton, and contribut…
