Feeding, agonistic and cooperative behavioural responses of shallow-water benthic marine scavengers

Phytoremediation of shallow organically enriched marine sediments using benthic microalgae.

We examined whether replantation of benthic microalgae (BMA) can remediate shallow organically enriched sediment. Nitzschia sp., the dominant species in the tested area (Hiroshima Bay, Japan), was isolated and mass cultured, then replanted in the same area. Changes in the condition of the sediment were monitored for five months. During the study period, we observed an increase in redox potentia...

Reduced seasonality in elemental CHN composition of Antarctic marine benthic predators and scavengers

Benthic Communities of Shallow-water Reefs of Abrolhos, Brazil

. Abstract: The benthic communities of fringing and mushroom-shaped shalIow-water reefs of the Abrolhos region (southern coast of Bahia) were surveyed. Line transects were used to estimate coral and alga1 percentage cover. Mussismilia braziliensis is the most conspicuous coral species in the majority of the communities surveyed, but turf algae make up the dominant cover in alI but one studied r...

Responses of marine benthic microalgae to elevated CO2

Increasing anthropogenic CO2 emissions to the atmosphere are causing a rise in pCO2 concentrations in the ocean surface and lowering pH. To predict the effects of these changes, we need to improve our understanding of the responses of marine primary producers since these drive biogeochemical cycles and profoundly affect the structure and function of benthic habitats. The effects of increasing C...

High Resolution Marine Magnetic Survey of Shallow Water Littoral Area

The purpose of this paper is to present a system developed for detection andaccurate mapping of ferro-metallic objects buried below the seabed in shallow waters. Thesystem comprises a precise magnetic gradiometer and navigation subsystem, both installedon a non-magnetic catamaran towed by a low-magnetic interfering boat. In addition wepresent the results of a marine survey of a near-shore area ...