Response of Corals to Acidification: What Can Be Learned From Field Studies?

By | October 23, 2015

Most of the ocean acidification research conducted to date has focused solely on the biological impacts of declining seawater pH. Fewer studies have investigated the interactive effects of ocean acidification and temperature. This summary examines what has been learned in several of such studies for coral reefs, as reported in various field-based studies on the topic. Contrary to… Read More »

Deserts: Are They Expanding Or Shrinking?

By | October 7, 2015

Back when the atmosphere’s CO2 concentration was approximately 340 ppm (up from a preindustrial value on the order of 280 ppm), Idso (1982) stated in a small self-published book (Carbon Dioxide: Friend or Foe?) that if the air’s CO2 content continued to climb, it would ultimately enhance plant growth and water use efficiency to the point that semi-arid… Read More »

The Response Of Enchinoderms to Ocean Acidification

By | September 17, 2015

As the air’s CO2 content rises in response to ever-increasing anthropogenic CO2 emissions, and as more and more carbon dioxide therefore dissolves in the surface waters of the world’s oceans, theoretical reasoning suggests the pH values of the planet’s oceanic waters should be gradually dropping. The IPCC and others postulate that this chain of events, commonly referred to… Read More »

The Response of Peanut Plants to Changes in Climate and Atmospheric C02

By | September 2, 2015

Nearly all agricultural crops respond to increases in the air’s CO2 content by displaying enhanced rates of photosynthesis and biomass production. In this brief summary, we review the results of some of the studies that have evaluated these effects and the effects of climate-model predicted changes in air temperature, precipitation and ozone pollution on peanut (Arachis hypogaea L.)… Read More »

Effects of Ocean Acidification on Marine Coccolithophores

By | September 1, 2015

Coccolithophores are single-celled algae and protists that are found throughout the surface euphotic zones of the world’s oceans. They contain chlorophyll, conduct photosynthesis and possess special plates or scales known as coccoliths, which they create via the process of calcification. This summary briefly reviews the results of several studies investigating how coccolithophores may be affected by ocean acidification… Read More »

Historic Trends in Global Sea Level

By | August 15, 2015

Periodically, individual scientists and groups of scientists analyze global sets of sea level data to see if there is any indication of a dramatic increase in the mean rate-of-rise of the global ocean surface in response to the supposedly unprecedented warming of the planet over the course of the 20th century and the initial phase of the 21st… Read More »

Antarctic Sea Ice Trends

By | August 15, 2015

Noting that Antarctic sea ice may show high sensitivity to any anthropogenic-induced increase in temperature, Watkins and Simmonds (2000)1 analyzed temporal trends in different measures of the sea ice that surrounds Antarctica, using Special Sensor Microwave Imager data obtained from the Defense Meteorological Satellite Program for the nine-year period December 1987-December 1996, in search of the suspected signal.… Read More »

Effects of Ocean Acidification and Warming on Corals (Laboratory Studies)

By | August 13, 2015

Most of the ocean acidification research conducted to date has focused solely on the biological impacts of declining seawater pH. Fewer studies have investigated the interactive effects of ocean acidification and temperature. This summary examines what has been learned in several of such studies for coral reefs, as reported in various laboratory-based studies on the topic. Contrary to… Read More »