Now showing items 1-10 of 15
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 ...
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.
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 ...
Sources of Error in Carbonate Chemistry: What happens when Biology and Chemistry meet?
Two different experimental systems were used to evaluate sources of error in carbonate chemistry measurements at Friday Harbor Labs, WA. One system, set up in Laboratory 6, examined the effects of different filters and a UV sterilizer. The second system explored the carbon input from feeding live versus dead algae in the ...
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 ...
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 ...
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 ...
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 ...
Variation of environmental forcings and the potential for changes in carbonate chemistry of the San Juan Archipelago
The carbonate chemistry of the San Juan Archipelago is extremely varied between regions of low to high tidal flushing. Salinity seems to be a driving parameter of the carbonate system through its effects on alkalinity. Freshwater from the Fraser River may control the environmental characteristics of water moving through the ...