Ocean acidification will not affect the shell strength of juveniles of the commercial clam species Chamelea gallina: Implications of the local alkalinization of seawater.

Ocean acidification (OA) is expected to decrease the strength of bivalves' shells, especially during the early stages of development, with negative consequences to the resilience of natural populations and the economy. The objectives of the present study were to assess the long-term effect of increasing pCO after 217 days of exposure under controlled conditions of pH of ∼8.2, 8.

Temperature amplifies the effect of high CO on the photosynthesis, respiration, and calcification of the coralline algae .

The combination of ocean acidification (OA) and global warming is expected to have a significant effect on the diversity and functioning of marine ecosystems, particularly on calcifying algae such as rhodoliths (maërl) that form extensive beds worldwide, from polar to tropical regions. In addition, the increasing frequency of extreme events, such as heat waves, threatens coastal ecosystems and may affect their capacity to fix blue carbon. The few studies where the simultaneous effects of both temperature and CO were investigated have revealed contradictory results.

High CO decreases the long-term resilience of the free-living coralline algae .

Mäerl/rhodolith beds are protected habitats that may be affected by ocean acidification (OA), but it is still unclear how the availability of CO will affect the metabolism of these organisms. Some of the inconsistencies found among OA experimental studies may be related to experimental exposure time and synergetic effects with other stressors. Here, we investigated the long-term (up to 20 months) effects of OA on the production and calcification of the most common mäerl species of southern Portugal, .

A direct CO control system for ocean acidification experiments: testing effects on the coralline red algae .

Most ocean acidification (OA) experimental systems rely on pH as an indirect way to control CO. However, accurate pH measurements are difficult to obtain and shifts in temperature and/or salinity alter the relationship between pH and CO. Here we describe a system in which the target CO is controlled via direct analysis of CO in seawater.

The Western South Atlantic Ocean in a High-CO2 World: Current Measurement Capabilities and Perspectives.

An international multi-disciplinary group of 24 researchers met to discuss ocean acidification (OA) during the Brazilian OA Network/Surface Ocean-Lower Atmosphere Study (BrOA/SOLAS) Workshop. Fifteen members of the BrOA Network (www.broa.

[Familial partial lipodystrophy type 1. A rare or underdiagnosed syndrome?].

Familial partial lipodystrophy (FPL) type 1 is a syndrome characterized by loss of subcutaneous fat in arms and legs and an excess of body fat in face, neck, and torso. This rare syndrome is usually diagnosed when patients present cardiovascular complications or pancreatitis due to the severe metabolic abnormalities. Here we present the case of a 45 year old diabetic female without any pathological family history, a poor glycemic control (HbA1c 11.

SURFACE INTERACTIONS OF THE EPIPHYTIC MACROALGA HINCKSIA MITCHELLIAE (PHAEOPHYCEAE) WITH THE SHOALGRASS HALODULE WRIGHTII (CYMODOCEACEAE)(1).

Meadows of Halodule wrightii (Cymodoceaceae) underwent a decline in a tidal flat located at Paranaguá Bay (Parana, SE Brazil). This decline appeared to be related to an overgrowth of the epiphytic macroalga Hincksia mitchelliae (Harv.) P.