This record shows an Air Photo Interpretation of the geology and morphology of Tabiteuea in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made. The map was prepared by Mark Urvois who was doing Data Management at CCOP/SOPAC.
This record shows an Air Photo Interpretation of the geology and morphology of Bonriki in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made. The map was prepared by Mark Urvois who was doing Data Management at CCOP/SOPAC.
This record shows an Air Photo Interpretation of the geology and morphology of Tabiteuea in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made. The map was prepared by Mark Urvois who was doing Data Management at CCOP/SOPAC.
This record shows an Air Photo Interpretation of the geology and morphology of Bairiki in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made. The map was prepared by Mark Urvois who was doing Data Management at CCOP/SOPAC.
This record shows an Air Photo Interpretation of the geology and morphology of Bonriki in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made. The map was prepared by Mark Urvois who was doing Data Management at CCOP/SOPAC.
This record shows an Air Photo Interpretation of the geology and morphology of Abarao, Ambo, Taborio, Tangintebu, Eita, Bangantebure and Bikenibeu, in Kiribati. The map was produced as part of the CCOP/SOPAC Coastal Mapping Workshop that was held in Kiribati in 1988. 1968/69 and 1984 photo sets of Air photograph interpretation of South Tarawa, and the Southern part of North Tarawa was used. However, plotting of recent (July 1988) re-surveys of beach profiles on Betio and Bairiki and comparison with earlier surveys were made.
Waves and Coasts in the Pacific (WACOP)
Waves and Coasts in the Pacific (WACOP)
Declining health of scleractinian corals in response to deteriorating environmental conditions is widely acknowledged, however links between physiological and functional genomic responses of corals are less well understood. Here we explore growth and the expression of 20 target genes with putative roles in metabolism and calcification in the branching coral, Acropora millepora, in two separate experiments: 1) elevated pCO2 (464, 822, 1187 and 1638 $μ$atm) and ambient temperature (27 °C), and 2) elevated pCO2 (490 and 822 $μ$atm) and temperature (28 and 31 °C).
Climate change is expected to exacerbate upwelling intensity and natural acidification in Eastern Boundaries Upwelling Systems (EBUS). Conducted between January-September 2015 in a nearshore site of the northern Humboldt Current System directly exposed to year-round upwelling episodes, this study was aimed at assessing the relationship between upwelling mediated pH-changes and functional traits of the numerically dominant planktonic copepod-grazer Acartia tonsa (Copepoda).
Increasing atmospheric CO2 can decrease the seawater pH and carbonate ions, which may adversely affect the larval survival of calcareous animals. In this study, we simulated future atmospheric CO2 concentrations (800, 1500, 2000 and 3000 $μ$atm) and examined the effects of ocean acidification on the embryonic and larval stage of an infaunal clam Paphia undulate. Significant decrease of hatching of P.
Production of CO2-tolerant microalgae have received much attention as well as physicochemical fixation of CO2 in industrial flue gas. Although many microalgae that are tolerant to high levels of CO2 have been found and evaluated, the CO2 concentration for their good growth is generally lower than their maximum tolerable CO2 level. In the present study, we attempted to isolate microalgae capable of growing in high levels of CO2 (high-level-CO2-preferring microalgae, HCP-microalgae). We used a CO2-permeable polystyrene bottle for the enrichment of HCP-microalgae in environmental samples.
Ocean acidification is expected to negatively impact many calcifying marine organisms by impairing their ability to build their protective shells and skeletons, and by causing dissolution and erosion. Here we investigated the large predatory “triton shell” gastropod Charonia lampas in acidified conditions near CO2 seeps off Shikine-jima (Japan) and compared them with individuals from an adjacent bay with seawater pH at present-day levels (outside the influence of the CO2 seep).
While ocean acidification (OA) is expected to have wide-ranging negative effects on marine species, organisms currently living in variable pH environments that expose them intermittently to pH values approaching those predicted for the future, may be better adapted to tolerate prolonged exposure to high pCO 2 levels caused by OA. Seasonal upwelling brings low pH water to the surface along the Pacific Coast of North America.
Ocean acidification (OA) is predicted to have widespread implications for marine organisms, yet the capacity for species to acclimate or adapt over this century remains unknown. Recent transgenerational studies have shown that for some marine species, exposure of adults to OA can facilitate positive carryover effects to their larval and juvenile offspring that help them to survive in acidifying oceanic conditions. But whether these positive carryover effects can persist into adulthood or the next generation is unknown.
Habitat warming and acidification experienced by intertidal invertebrates are potentially detrimental to sensitive early post-larvae of benthic marine invertebrates. To determine the potential impact of acidification and warming on a conspicuous component of the temperate intertidal fauna of the southern hemisphere, the response of newly metamorphosed juvenile (ca. 450 $μ$m diameter) sea stars (Parvulastra exigua) to increased acidification and temperature was investigated with respect to conditions recorded in the habitat (− 0.4–0.6 pH units, + 2-4 °C), in all combinations of stressors.
Most marine sponges precipitate silicate skeletal elements, and it has been predicted that they would be among the few “winners” among invertebrates in an acidifying, high-CO2 ocean. But members of Class Calcarea and a small proportion of the Demospongiae have calcified skeletal structures, which puts them among those calcifying organisms which are vulnerable to lowered pH and CO3= availability.
To test the effects of chronic stress caused by CO2-driven decreases in pH (NBS scale) on molluscs, juvenile Pacific abalone (Haliotis discus hannai), an economically important gastropod, were cultured at pH 8.1 (control), pH 7.9 or 7.7 for 3 months. Eroded shell surfaces, reduced growth rates, and altered biochemical composition and energy metabolism were found in abalone cultured in acidified conditions.
The global acidification of the earth's oceans is predicted to impact biodiversity via physiological effects impacting growth, survival, reproduction, and immunology, leading to changes in species abundances and global distributions. However, the degree to which these changes will play out critically depends on the evolutionary rate at which populations will respond to natural selection imposed by ocean acidification, which remains largely unquantified.
Excavating sponges are prominent bioeroders on coral reefs that in comparison to other benthic organisms may suffer less or may even benefit from warmer, more acidic and more eutrophic waters. Here, the photosymbiotic excavating sponge Cliona orientalis from the Great Barrier Reef was subjected to a prolonged simulation of both global and local environmental change: future seawater temperature, partial pressure of carbon dioxide (as for 2100 summer conditions under "business-as-usual" emissions), and diet supplementation with particulate organics.