Is regulation on ocean acidification on the horizon?
نویسنده
چکیده
Noreen Parks Environ. Sci. Technol., Article ASAP DOI: 10.1021/es901664n Publication Date (Web): June 24, 2009 Copyright © 2009 American Chemical Society With mounting evidence that ocean waters worldwide are turning more acidic, scientists have issued ever more urgent pleas for policy makers to recognize that this phenomenon is a direct and real consequence of rising levels of atmospheric CO2. Researchers warn that as ocean pH falls, the capacities of calcifying marine organisms to build shells and skeletons will be severely reduced, in all likelihood causing widespread impacts on marine ecosystems. In June 2009, a statement endorsed by 70 national science academies emphasized that the issue must be on the agenda at the upcoming global climate talks in Copenhagen. “To avoid substantial damage to ocean ecosystems, deep and rapid reductions of global CO2 emissions by at least 50% by 2050, and much more thereafter, are needed,” the statement warned.
منابع مشابه
Biomarker response of climate change-induced ocean acidification and hypercapnia studies on brachyurian crab Portunus pelagicus
A laboratory level microcosm analysis of the impacts of ocean acidification on the environmental stress biomarkers in Portunus pelagicus (Linneaus 1758)exposed to a series of pH regimes expected in the year 2100 (pH 7.5 and 7.0) and leakage from a sub-seabed carbon dioxide storage site (pH 6.5 - 5.5) was carried out. Levels of the antioxidant enzyme catalase, the phase II detoxificatio...
متن کاملGene expression changes in the coccolithophore Emiliania huxleyi after 500 generations of selection to ocean acidification.
Coccolithophores are unicellular marine algae that produce biogenic calcite scales and substantially contribute to marine primary production and carbon export to the deep ocean. Ongoing ocean acidification particularly impairs calcifying organisms, mostly resulting in decreased growth and calcification. Recent studies revealed that the immediate physiological response in the coccolithophore Emi...
متن کاملEffects of seawater acidification on gene expression: resolving broader-scale trends in sea urchins.
Sea urchins are ecologically and economically important calcifying organisms threatened by acidification of the global ocean caused by anthropogenic CO2 emissions. Propelled by the sequencing of the purple sea urchin (Strongylocentrotus purpuratus) genome, profiling changes in gene expression during exposure to high pCO2 seawater has emerged as a powerful and increasingly common method to infer...
متن کاملCoral Carbonic Anhydrases: Regulation by Ocean Acidification
Global change is a major threat to the oceans, as it implies temperature increase and acidification. Ocean acidification (OA) involving decreasing pH and changes in seawater carbonate chemistry challenges the capacity of corals to form their skeletons. Despite the large number of studies that have investigated how rates of calcification respond to ocean acidification scenarios, comparatively fe...
متن کاملImpacts of ocean acidification on marine fauna and ecosystem processes
Oceanic uptake of anthropogenic carbon dioxide (CO2) is altering the seawater chemistry of the world’s oceans with consequences for marine biota. Elevated partial pressure of CO2 (pCO2) is causing the calcium carbonate saturation horizon to shoal in many regions, particularly in high latitudes and regions that intersect with pronounced hypoxic zones. The ability of marine animals, most importan...
متن کاملViral attack exacerbates the susceptibility of a bloom-forming alga to ocean acidification.
Both ocean acidification and viral infection bring about changes in marine phytoplankton physiological activities and community composition. However, little information is available on how the relationship between phytoplankton and viruses may be affected by ocean acidification and what impacts this might have on photosynthesis-driven marine biological CO2 pump. Here, we show that when the harm...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Environmental science & technology
دوره 43 16 شماره
صفحات -
تاریخ انتشار 2009