Tags » Prokaryotes

Effect of simulated ocean acidification on the composition of microbial assemblages in New Zealand’s coastal sediment and their potential for ammonia oxidation

The ocean’s pH has decreased by 0.1 units in the last two centuries due to anthropogenic CO2 emissions and it is predicted will continue to decrease by 0.3 units during the next century. 483 more words


Mechanisms of increased Trichodesmium fitness under iron and phosphorus co-limitation in the present and future ocean

Nitrogen fixation by cyanobacteria supplies critical bioavailable nitrogen to marine ecosystems worldwide; however, field and lab data have demonstrated it to be limited by iron, phosphorus and/or CO2. 170 more words


No observed effect of ocean acidification on nitrogen biogeochemistry in a summer Baltic Sea plankton community (update)

Nitrogen fixation by filamentous cyanobacteria supplies significant amounts of new nitrogen (N) to the Baltic Sea. This balances N loss processes such as denitrification and anammox, and forms an important N source supporting primary and secondary production in N-limited post-spring bloom plankton communities. 298 more words


Using Bioviewers in IB Biology

IB1 were asked to use Bioviewers to examine and practice drawing the structure of prokaryotes.


Response of subtropical coastal sediment systems of Okinawa, Japan, to experimental warming and high pCO2

Increasing seawater temperatures and CO2 levels associated with climate change affect the shallow marine ecosystem function. In this study, the effects of elevated seawater temperature and partial pressure of CO2 (pCO2) on subtropical sediment systems of mangrove, seagrass, and coral reef lagoon habitats of Okinawa, Japan, were examined. 339 more words


Restructuring of the sponge microbiome favors tolerance to ocean acidification

Ocean acidification is increasing and affects many marine organisms. However, certain sponge species can withstand low-pH conditions. This may be related to their complex association with microbes. 203 more words


Mechanisms driving Antarctic microbial community responses to ocean acidification: a network modelling approach

Rising atmospheric CO2 concentrations and the subsequent changes to ocean chemistry may have pronounced effects on marine microbial communities, particularly for the cold Southern Ocean. Changes to the microbial community in this region could affect the way nutrients are cycled, impact the efficiency of carbon drawdown, and cause shifts in food supply to higher trophic levels. 227 more words