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Blog Profile / Ocean Acidification


URL :http://oceanacidification.wordpress.com
Filed Under:Biology / Marine Biology
Posts on Regator:4765
Posts / Week:21.1
Archived Since:July 23, 2010

Blog Post Archive

Life on the edge: Is ocean acidification a threat to deep-sea life? (text & video)

Even animals living in the deep ocean are affected by the increasing emissions of carbon dioxide into the atmosphere. The ocean naturally absorbs carbon dioxide from the atmosphere, resulting in a more acidic habitat for ocean life. Researchers at the Monterey Bay Aquarium Research Institute use a series of specially designed chambers to study how […]

Basin-scale estimates of pelagic and coral reef calcification in the Red Sea and Western Indian Ocean

Basin-scale calcification rates are highly important in assessments of the global oceanic carbon cycle. Traditionally, such estimates were based on rates of sedimentation measured with sediment traps or in deep sea cores. Here we estimated CaCO3 precipitation rates in the surface water of the Red Sea from total alkalinity depletion along their axial flow using […]

NOAA, partners provide real-time ocean acidification data to Pacific coast shellfish growers

New portal builds on NOAA’s commitment to provide public access to data from observational network. Shellfish farms and hatcheries along the Pacific U.S. coast  can now get real-time, online ocean acidification data through the Integrated...Show More Summary

40 years of scratching reveals ocean acidification data

As carbon dioxide levels increase due largely to human emissions, the world’s oceans are becoming highly corrosive to a number of organisms that call it home. But the rate of acidification and related changes are anything but uniform. That’s why a new study aims to set a baseline for nearly every patch of saltwater from […]

Quantifying the relative importance of transcellular and paracellular ion transports to coral polyp calcification

Ocean acidification due to rising atmospheric pCO2 slows down coral calcification and impedes reef formation, with deleterious consequences for the diversity of reef ecosystems. Such effects contrast with the capacity of corals to actively regulate the chemical composition of the calcifying fluid where calcification occurs. Show More Summary

Ocean acidification crumbling the shells of the sea

If there is one thing we know from the history of life on Earth, it is that the oceans are resilient and relentless. Nearly four billion years ago the first raindrops fell from our cooling planet, accumulating in low basins and forming the first oceans. It is from these oceans that the first forms of […]

Evaluating the economic damage of climate change on global coral reefs

This paper evaluates the global economic damage arising from the effects of climate change and associated carbon dioxide concentrations on the loss of coral reefs. We do this by first estimating the effects of sea surface temperature and carbon dioxide concentrations on coral cover. We develop a statistical relationship between coral coverage and sea surface […]

Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin

Coastal areas are impacted by multiple natural and anthropogenic processes and experience stronger pH fluctuations than the open ocean. These variations can weaken or intensify the ocean acidification signal induced by increasing atmospheric pCO2. Show More Summary

Promoting international collaboration on ocean acidification data management

Ocean acidification, often referred to as “the other carbon dioxide problem,” is the progressive increase in ocean acidity that has taken place since the onset of the industrial revolution. Biological and ecological studies of ocean acidification impacts only began in the late 1990s, but the field has evolved rapidly, with exponential growth in the past […]

Studentship: Carbonate chemistry, ocean acidification and CO2 exchange in the Canadian Arctic, McGill University, Canada

The Department of Earth and Planetary Sciences of the McGill University seeks Ph.D. and M.Sc. students to participate in a large-scale study of processes that modulate the spatial and temporal variability of the pCO2 gradient at the air-sea interface and exchange of CO2 with sub-thermocline waters and across oceanic basins. The project will be part […]

Changing oceans put crabs into ‘survival mode’

It has long been suspected that rising temperatures and ocean acidification are making it harder for crabs to reproduce and survive. However, aside from weakening exoskeletons, it was unclear exactly why this was happening. Now, a new study suggests it comes down to these crustaceans’ own biology. That’s at least according to a new study […]

The hidden ‘evil twin’ of climate change

According to the results of a major new national survey published by the University, the majority of the British public has a very low awareness of the issue of ocean acidification, with around only one-in-five participants stating they had even heard of the issue. The oceans are currently absorbing large quantities of the carbon dioxide […]

Public perceptions of ocean acidification: summary findings of two nationally representative surveys of the British public, October 2014

The oceans are absorbing large quantities of the carbon dioxide (CO2) which has been emitted into the atmosphere from human activities. This absorption of CO2 is leading to a reduction in the pH of seawater – termed ‘ocean acidification’ (OA) – with consequences for marine ecosystems and the societies which depend upon them. Ocean acidification […]

Synergistic effects of acute warming and low pH on cellular stress responses of the gilthead seabream Sparus aurata

The present study assesses the resilience of the Mediterranean gilthead seabream (Sparus aurata) to acute warming and water acidification, using cellular indicators of systemic to molecular responses to various temperatures and CO2 concentrations. Show More Summary

Coral macrobioerosion is accelerated by ocean acidification and nutrients

Coral reefs exist in a delicate balance between calcium carbonate (CaCO3) production and CaCO3 loss. Ocean acidification (OA), the CO2-driven decline in seawater pH and CaCO3 saturation state (?), threatens to tip this balance by decreasing calcification and increasing erosion and dissolution. Show More Summary

The combined effect of temperature and pH on embryonic development of obscure puffer Takifuguobscurus and its ecological implications

Rising temperature and decreasing pH caused by climate change may affect the development of fish. The objective of this study was to determine the combined effects of temperature (19, 22, 25, 28 °C) and pH (5, 6, 7, 8) on incubation time, total hatch rate, abnormal rate, and viability of newly hatched larvae 24 h […]

Effects of increased pCO2 levels on the nematocyst densities in the symbiotic sea anemone Anthopleura elegantissima

The temperate sea anemone Anthopleura elegantissima participates in a facultative symbiosis with two genera of unicellular photosynthetic algae. Under stressful conditions such as increased levels of pCO2, anemones expel their algal symbionts causing the anemones to rely more heavily upon heterotrophic feeding. Show More Summary

Weakening mechanisms of the serpulid tube in a high CO2 world

Many benthic marine organisms produce calcium carbonate (CaCO3) structures for mechanical protection through a biologically controlled calcification process. However, the oceans are becoming unfavorable for calcification because of the...Show More Summary

Effects of ocean acidification on the larvae of a high-value pelagic fisheries species, mahi-mahi Coryphaena hippurus

Negative impacts of CO2-induced ocean acidification on marine organisms have proven to be variable both among and within taxa. For fishes, inconsistency confounds our ability to draw conclusions that apply across taxonomic groups and highlights the limitations of a nascent field with a narrow scope of study species. Here, we present data from a series […]

Studentship: The magnitude and impacts of historic ocean acidification revealed by Boron isotope analysis of rhodolith-forming coralline algae

Location: University of Southampton, National Oceanography Centre Southampton, United Kingdom Rationale: Half of anthropogenic emissions of CO2 have been mixed into the ocean creating carbonic acid, causing a drop in ocean pH of ~0.1 units (Ocean Acidification, OA) and a decline in the saturation state of calcium carbonate (CaCO3). Show More Summary

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