Now showing items 1-10 of 15
Variation in Carbonate Chemistry throughout the San Juan Archipelago
Due to the dynamic nature of the water masses in the San Juan archipelago, the carbonate chemistry has not yet been well defined in space and time. For this short-term study during a neap to spring tidal cycle in mid July 2011, we analyzed water samples as far west as Kellett Bluff and as far east as East Sound for dissolved ...
Bacteria Abundance in Response to Increasingly Acidic Conditions
The objective of this mesocosm experiment is to determine differences in bacteria abundance in normal (600μatm), medium (1000μatm), and high (1300μatm) CO2 concentrations. Mesocosms serve as an intermediate for lab and field studies; mesocosms provide insight about changes to food webs, communities, and ecosystems.
Tidepools in Dead Man’s Cove show large fluctuations in carbonate chemistry during the low tide in comparison to Haro Stait water
During the low tide, tidepools are under different physio-chemical conditions than the coastal waters. This includes the carbonate chemistry, which is especially pertinent to study due to the threat of ocean acidification on carbonate chemistry. We examined the fluctuation in DIC, total alkalinity, pH, temperature, dissolved ...
Investigation of the carbonate chemistry of two tide pools on San Juan Island
Open ocean observations have shown that increasing levels of anthropogenically-derived atmospheric CO2 are causing acidification of the world’s oceans. Yet little is known about coastal acidification and very few studies have characterized the carbonate chemistry of coastal zones or intertidal rock pools where many calcifying ...
A Tale of Two Tide Pools: Examining Carbonate Chemistry in the Intertidal
Characterization of physical conditions in tide pools is quite common in the scientific literature, but there is a marked paucity of information regarding the carbonate chemistry of these ecosystems; the majority of studies focus on temperature, salinity, and dissolved oxygen measurements. This lack of information is especially ...
Effects of Temperature and pH on Larval and Juvenile Development in the Marine Gastropod, Crepidula fornicata
Rising atmospheric CO2 levels are associated with warming and acidification in coastal marine ecosystems, with impacts that are especially acute for marine calcifiers. We have investigated the interactive effects of pH and temperature on larval growth, time to metamorphic competence, and juvenile growth in the marine ...
Interactions of diet quality and pH in growth and mortality in the marine gastropod Crepidula fornicata
Ocean acidification metabolically stresses marine organisms, especially those that must expend energy to deposit calcium carbonate shells and skeletons. Nutrition may interact with pH to exacerbate or counterbalance acidification effects in early developmental stages. Previous work had indicated that growth of larvae and ...
Effects of Ocean Acidification on Limpet Lottia scutum's Shell Strength
Calcium carbonate shells undergo dissolution in acidified conditions. As carbon dioxide in the atmosphere increases, the ocean's pH is lowered. Lottia scutum is used in this experiment to demonstrate the affect of ocean acidification on calcium carbonate material, which many marine organisms possess. As a limpet's shell ...
THE TALE OF TWO TIDEPOOLS: EXAMINING CARBONATE CHEMISTRY IN THE INTERTIDAL
Tidepools are a prominent feature of the intertidal zone, housing a great diversity of both macroalgae and mobile animal components. Tidepool organisms are exposed to wide variations in temperature, salinity, and pH over the course of the low tide. As of yet, very few studies have quantified the changes in carbonate chemistry ...
Variations in Tide Pool Carbonate Chemistry and Temperature
Tide pools are known to have extreme variations in both their temperature and carbonate chemistry while they are isolated from the surrounding waters. These extreme environments provide an interesting view into how organisms are able to cope with large variations in temperature, pH and total carbon. The knowledge of how ...