Stephen Tomasetti

Stephen Tomasetti
Hamilton College · Department of Environmental Studies

PhD Marine and Atmospheric Sciences

About

16
Publications
1,719
Reads
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64
Citations
Citations since 2017
16 Research Items
64 Citations
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20172018201920202021202220230510152025
Introduction
I am a Visiting Assistant Professor of Environmental Studies at Hamilton College. The Tomasetti Lab is broadly interested in climate change and other anthropogenic drivers of biogeochemical and ecological change in coastal ecosystems. We also have a keen interest in sustainable coastal food systems, coastal policy, and historical ecology.

Publications

Publications (16)
Article
Full-text available
A large number of coastal ecosystems globally are subjected to concurrent hypoxic and acidified conditions that will likely intensify and expand with continued climate change. In temperate regions, the spawning of many important organisms including the Atlantic blue crab Callinectes sapidus occurs during the summer months when the severity of coast...
Article
Full-text available
Changes in human population centers and agricultural fertilizer use have accelerated delivery rates of nitrogen and phosphorus to coastal waters, often stimulating rapid accumulations of primary production. Whereas resulting eutrophication processes are of less environmental relevance in well-mixed, ocean ecosystems, when they occur in warm, strati...
Article
Full-text available
Many shallow coastal systems experience diel fluctuations in dissolved oxygen (DO) and pH that can intensify throughout the summer season and expose estuarine organisms to repeated episodes of coastal hypoxia and acidification. In temperate regions, larval release of the economically important blue crab Callinectes sapidus occurs in the summer, and...
Article
Full-text available
During the past century, bivalve populations across the globe have collapsed, resulting in negative ecosystem consequences due to their outsized impact on shallow estuaries. In response, there has been strong interest in the restoration of marine bivalve populations. Here, we present a decade-long restoration effort that sought to rebuild a collaps...
Article
Full-text available
Warming temperatures and diminishing dissolved oxygen (DO) concentrations are among the most pervasive drivers of global coastal change. While regions of the Northwest Atlantic Ocean are experiencing greater than average warming, the combined effects of thermal and hypoxic stress on marine life in this region are poorly understood. Populations of t...
Article
Harmful algal blooms (HABs) are recurrent in the NW Patagonia fjords system and their frequency has increased over the last few decades. Outbreaks of HAB species such as Alexandrium catenella, a causal agent of paralytic shellfish poisoning, and Protoceratium reticulatum, a yessotoxins producer, have raised considerable concern due to their adverse...
Article
Full-text available
Coastal zones can be focal points of acidification where the influx of atmospheric CO2 can be compounded by additional sources of acidity that may collectively impair calcifying organisms. While the photosynthetic action of macrophytes may buffer against coastal ocean acidification, such activity has not been well-studied, particularly among aquacu...
Article
In recent decades, the alteration of coastal food webs (via aquaculture, fishing, and leisure activities), nutrient loading, and an expansion of monitoring programs have prompted an apparent worldwide rise in Harmful Algae Blooms (HABs). Over this time, a parallel increase in HABs has also been observed in the Chilean southern austral region (Patag...
Data
Experiments one, two, and three: Two-way analysis of variance for Callinectes sapidus larval survival when exposed to two levels of DO and pH for 14 days. (DOCX)
Data
Mean pH, carbonate chemistry, alkalinity, DO, temperature and salinity (± 1 SD) during experiments one, two, and three in which larval stage Callinectes sapidus were exposed to differing levels of pH and DO achieved via mixing tanked gases. (DOCX)
Data
Mean pH, carbonate chemistry, alkalinity, DO, temperature and salinity (± 1 SD) during experiments four and five in which larval stage Callinectes sapidus were exposed to differing levels of pH and DO achieved via mixing tanked gases. (DOCX)
Data
Experiments four and five: Two-way analysis of variance for Callinectes sapidus larval survival when exposed to two levels of DO and pH for 4 days. (DOCX)
Data
Logistic, 3-parameter nonlinear regression for Callinectes sapidus larval survival when exposed to varying levels of DO for a period ≤ 4 days; Regression Equation: y = a / [1 +(x/x0)b]. (DOCX)
Data
Linear regression for Callinectes sapidus larval survival when exposed to varying DO levels for 14 days; Regression Equation: y = 0.109x – 4.554. (DOCX)
Data
Linear regression for Callinectes sapidus larval survival when exposed to varying pH levels for 14 days; Regression Equation: y = 16.325x – 108.96. (DOCX)

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