index.json

[{"authors":null,"categories":null,"content":"I am a research ecologist at the United States Environmental Protection Agency where my research focuses on marine algae, including harmful algal bloom (HAB) species, and their community responses to environmental variables like temperature, nutrients, and pH.\nPreviously, I was a Simons Foundation Postdoctoral Fellow in Marine Microbial Ecology at the Massachusetts Institute of Technology. I worked under the direction of Dr. Stephanie Dutkiewicz examining phytoplankton thermal trait differentiation in a modeled ocean. For my doctoral dissertation with Dr. Tatiana Rynearson at the University of Rhode Island Graduate School of Oceanography, I employed experimental, molecular, and modeling approaches to investigate the role of temperature in driving phytoplankton physiology, community structure, and biogeography.\n","date":1607817600,"expirydate":-62135596800,"kind":"term","lang":"en","lastmod":1607817600,"objectID":"2525497d367e79493fd32b198b28f040","permalink":"","publishdate":"0001-01-01T00:00:00Z","relpermalink":"","section":"authors","summary":"I am a research ecologist at the United States Environmental Protection Agency where my research focuses on marine algae, including harmful algal bloom (HAB) species, and their community responses to environmental variables like temperature, nutrients, and pH.","tags":null,"title":"Stephanie I. Anderson","type":"authors"},{"authors":[],"categories":null,"content":" Click on the Slides button above to view the built-in slides feature.   Slides can be added in a few ways:\n Create slides using Wowchemy\u0026rsquo;s Slides feature and link using slides parameter in the front matter of the talk file Upload an existing slide deck to static/ and link using url_slides parameter in the front matter of the talk file Embed your slides (e.g. Google Slides) or presentation video on this page using shortcodes.  Further event details, including page elements such as image galleries, can be added to the body of this page.\n","date":1906549200,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1906549200,"objectID":"a8edef490afe42206247b6ac05657af0","permalink":"https://sianderson.github.io/talk/example-talk/","publishdate":"2017-01-01T00:00:00Z","relpermalink":"/talk/example-talk/","section":"event","summary":"An example talk using Wowchemy's Markdown slides feature.","tags":[],"title":"Example Talk","type":"event"},{"authors":["**Stephanie I. Anderson**","Clara Fronda","Andrew D. Barton","Sophie Clayton","Tatiana A. Rynearson","Stephanie Dutkiewicz"],"categories":[],"content":"","date":1704067200,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1705812408,"objectID":"df09f01466ce61cad8a1c073be337023","permalink":"https://sianderson.github.io/publication/anderson-2024/","publishdate":"2024-01-01T00:00:00Z","relpermalink":"/publication/anderson-2024/","section":"publication","summary":"Phytoplankton exhibit diverse physiological responses to temperature which influence their fitness in the environment and consequently alter their community structure. Here, we explored the sensitivity of phytoplankton community structure to thermal response parameterization in a modelled marine phytoplankton community. Using published empirical data, we evaluated the maximum thermal growth rates (umax) and temperature coefficients (Q10; the rate at which growth scales with temperature) of six key Phytoplankton Functional Types (PFTs): coccolithophores, cyanobacteria, diatoms, diazotrophs, dinoflagellates, and green algae. Following three well-documented methods, PFTs were either assumed to have (1) the same umax and the same Q10 (as in to Eppley, 1972), (2) a unique umax but the same Q10 (similar to Kremer et al., 2017), or (3) a unique umax and a unique Q10 (following Anderson et al., 2021). These trait values were then implemented within the Massachusetts Institute of Technology biogeochemistry and ecosystem model (called Darwin) for each PFT under a control and climate change scenario. Our results suggest that applying a umax and Q10 universally across PFTs (as in Eppley, 1972) leads to unrealistic phytoplankton communities, which lack diatoms globally. Additionally, we find that accounting for differences in the Q10 between PFTs can significantly impact each PFTs competitive ability, especially at high latitudes, leading to altered modeled phytoplankton community structures in our control and climate change simulations. This then impacts estimates of biogeochemical processes, with, for example, estimates of export production varying by ~10% in the Southern Ocean depending on the parameterization. Our results indicate that the diversity of thermal response traits in phytoplankton not only shape community composition in the historical and future, warmer ocean, but that these traits have significant feedbacks on global biogeochemical cycles.","tags":[],"title":"Phytoplankton thermal trait parameterization alters community structure and biogeochemical processes in a modeled ocean","type":"publication"},{"authors":["Joshua D. Kling","Michael D. Lee","Nathan G. Walworth","Eric A. Webb","Jordan T. Coelho","Paul Wilburn","**Stephanie I. Anderson**","Qianqian Zhou","Chunguang Wang","Megan D. Phan","Feixue Fu","Colin T. Kremer","Elena Litchman","Tatiana A. Rynearson","David A. Hutchins"],"categories":[],"content":"","date":1700092800,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1700092800,"objectID":"46de169bfbffcde38c75ec9ef38d8c0d","permalink":"https://sianderson.github.io/publication/kling-2023/","publishdate":"2023-11-16T00:00:00Z","relpermalink":"/publication/kling-2023/","section":"publication","summary":"The extent and ecological significance of intraspecific functional diversity within marine microbial populations is still poorly understood, and it remains unclear if such strain- level microdiversity will affect fitness and persistence in a rapidly changing ocean environment. In this study, we cultured 11 sympatric strains of the ubiquitous marine picocyanobacterium Synechococcus isolated from a Narragansett Bay (RI) phytoplank- ton community thermal selection experiment. Thermal performance curves revealed selection at cool and warm temperatures had subdivided the initial population into thermotypes with pronounced differences in maximum growth temperatures. Curiously, the genomes of all 11 isolates were almost identical (average nucleotide identities of 99.99%, with 99% of the genome aligning) and no differences in gene content or sin- gle nucleotide variants were associated with either cool or warm temperature phenotypes. Despite a very high level of genomic similarity, sequenced epigenomes for two strains showed differences in methylation on genes associated with photosynthesis. These cor- responded to measured differences in photophysiology, suggesting a potential pathway for future mechanistic research into thermal microdiversity. Our study demonstrates that present- day marine microbial populations can harbor cryptic but environmentally relevant thermotypes which may increase their resilience to future rising temperatures.","tags":[],"title":"Dual thermal ecotypes coexist within a nearly genetically identical population of the unicellular marine cyanobacterium Synechococcus","type":"publication"},{"authors":["Gayantonia Franzè","**Stephanie I. Anderson**","Joshua D. Kling","Paul Wilburn","David A. Hutchins","Elena Litchman","Tatiana A. Rynearson","Susanne Menden-Deuer"],"categories":[],"content":"","date":1672358400,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1672358400,"objectID":"9d819a69c1ade127196a0e6d3fb0ae24","permalink":"https://sianderson.github.io/publication/franze-2022/","publishdate":"2022-12-30T00:00:00Z","relpermalink":"/publication/franze-2022/","section":"publication","summary":"Marine microbial communities in coastal environments are subject to both seasonal fluctuations and anthropogenic alterations of environmental conditions. The separate influences of temperature and resource-dependency on phytoplankton growth, community, and ecosystem metabolism are relatively well understood. However, winners and losers in the ocean are determined based on the interplay among often rapidly changing biological, chemical and physical drivers. The direct, indirect, and interactive effects of these conditions on planktonic food web structure and function are poorly constrained. Here, we investigated how simultaneous manipulation of temperature and nutrient availability affects trophic transfer from phytoplankton to herbivorous protists, and their resulting implications at the ecosystem level. Temperature directly affected herbivorous protist composition; ciliates dominated (66%) in colder treatment and dinoflagellates (60%) at warmer temperatures. Throughout the experiments, grazing rates were ","tags":[],"title":"Interactive effects of nutrients and temperature on herbivorous predation in a coastal plankton community","type":"publication"},{"authors":["Ian W Bishop","**Stephanie I. Anderson**","Sinead Collins","Tatiana A. Rynearson"],"categories":[],"content":"","date":1658102400,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1658102400,"objectID":"4f7f97dbab2fbcbd7846907927d26531","permalink":"https://sianderson.github.io/publication/bishop-2022/","publishdate":"2022-07-18T00:00:00Z","relpermalink":"/publication/bishop-2022/","section":"publication","summary":"Despite the potential of standing genetic variation to rescue communities and shape future adaptation to climate change, high levels of uncertainty are associated with intraspecific trait variation in marine phytoplankton. Recent model intercomparisons have pointed to an urgent need to reduce uncertainty in the projected responses of marine ecosystems to climate change, including Southern Ocean (SO) surface waters, which are among the most rapidly warming habitats on Earth. Because SO phytoplankton growth responses to warming sea surface temperature (SST) are poorly constrained, we developed a high-throughput growth assay to simultaneously examine inter- and intra-specific thermal trait variation in a group of 43 taxonomically diverse and biogeochemically important SO phytoplankton called diatoms. We found significant differential growth performance among species across thermal traits, including optimum and maximum tolerated growth temperatures. Within species, coefficients of variation ranged from 3% to 48% among strains for those same key thermal traits. Using SO SST projections for 2100, we predicted biogeographic ranges that differed by up to 97% between the least and most tolerant strains for each species, illustrating the role that strain-specific differences in temperature response can play in shaping predictions of future phytoplankton biogeography. Our findings revealed the presence and scale of thermal trait variation in SO phytoplankton and suggest these communities may already harbour the thermal trait diversity required to withstand projected 21st-century SST change in the SO even under severe climate forcing scenarios.","tags":[],"title":"Thermal trait variation may buffer Southern Ocean phytoplankton from anthropogenic warming","type":"publication"},{"authors":["**Stephanie I. Anderson**","Gayantonia Franzè","Joshua D. Kling","Paul Wilburn","Colin T. Kremer","Susanne Menden-Deuer","Elena Litchman","David A. Hutchins","Tatiana A. Rynearson"],"categories":[],"content":"","date":1644278400,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1644278400,"objectID":"0e7b6ea27de7af60eba2c2ad26f19b23","permalink":"https://sianderson.github.io/publication/anderson-2022/","publishdate":"2022-02-08T00:00:00Z","relpermalink":"/publication/anderson-2022/","section":"publication","summary":"A complex interplay of environmental variables impacts phytoplankton community composition and physiology. Temperature and nutrient availability are two principal factors driving phytoplankton growth and composition, but are often investigated independently and on individual species in the laboratory. To assess the individual and interactive effects of temperature and nutrient concentration on phytoplankton community composition and physiology, we altered both the thermal and nutrient conditions of a cold-adapted spring phytoplankton community in Narragansett Bay, Rhode Island, when surface temperature was 2.6ºC and chlorophyll 9 μg/L. Water was incubated in triplicate at -0.5ºC, 2.6ºC, and 6ºC for 10 d. At each temperature, treatments included both nutrient amendments (N, P, Si addition) and controls (no macronutrients added). The interactive effects of temperature and resource availability altered phytoplankton growth and community structure. Nutrient amendments resulted in species sorting and communities dominated by larger species. Under replete nutrients, warming tripled phytoplankton growth rates, but under in situ nutrient conditions, increased temperature acted antagonistically, reducing growth rates by as much as 33%, suggesting communities became nutrient limited. The temperature–nutrient interplay shifted the relative proportions of each species within the phytoplankton community, resulting in more silica rich cells at decreasing temperatures, irrespective of nutrients, and C:N that varied based on resource availability, with nutrient limitation inducing a 47% increase in C:N at increasing temperatures. Our results illustrate how the temperature–nutrient interplay can alter phytoplankton community dynamics, with changes in temperature amplifying or exacerbating the nutrient effect with implications for higher trophic levels and carbon flux.","tags":[],"title":"The interactive effects of temperature and nutrients on a spring phytoplankton community","type":"publication"},{"authors":["**Stephanie I. Anderson**","Andrew D. Barton","Sophie Clayton","Stephanie Dutkiewicz","Tatiana A. Rynearson"],"categories":[],"content":"","date":1636070400,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1611982008,"objectID":"d5d3b46da63069899b0df74804fd734c","permalink":"https://sianderson.github.io/publication/anderson-2021/","publishdate":"2021-01-30T04:46:47.290197Z","relpermalink":"/publication/anderson-2021/","section":"publication","summary":"Marine phytoplankton generate half of global primary production, making them essential to ecosystem functioning and biogeochemical cycling. Though phytoplankton are phylogenetically diverse, studies rarely designate unique thermal traits to different taxa, resulting in coarse representations of phytoplankton thermal responses. Here we assessed phytoplankton functional responses to temperature using empirically derived thermal growth rates from four principal contributors to marine productivity: diatoms, dinoflagellates, cyanobacteria, and coccolithophores. Using modeled sea surface temperatures for 1950–1970 and 2080–2100, we explored potential alterations to each group’s growth rates and geographical distribution under a future climate change scenario. Contrary to the commonly applied Eppley formulation, our data suggest phytoplankton functional types may be characterized by different temperature coefficients (Q10), growth maxima thermal dependencies, and thermal ranges which would drive dissimilar responses to each degree of temperature change. These differences, when applied in response to global simulations of future temperature, result in taxon-specific projections of growth and geographic distribution, with low-latitude coccolithophores facing considerable decreases and cyanobacteria substantial increases in growth rates. These results suggest that the singular effect of changing temperature may alter phytoplankton global community structure, owing to the significant variability in thermal response between phytoplankton functional types.","tags":[],"title":"Marine phytoplankton functional types exhibit diverse responses to thermal change","type":"publication"},{"authors":["Stephanie I. Anderson","吳恩達"],"categories":["Demo","教程"],"content":"Overview  The Wowchemy website builder for Hugo, along with its starter templates, is designed for professional creators, educators, and teams/organizations - although it can be used to create any kind of site The template can be modified and customised to suit your needs. It\u0026rsquo;s a good platform for anyone looking to take control of their data and online identity whilst having the convenience to start off with a no-code solution (write in Markdown and customize with YAML parameters) and having flexibility to later add even deeper personalization with HTML and CSS You can work with all your favourite tools and apps with hundreds of plugins and integrations to speed up your workflows, interact with your readers, and much more    The template is mobile first with a responsive design to ensure that your site looks stunning on every device.   Get Started  👉 Create a new site 📚 Personalize your site 💬 Chat with the Wowchemy community or Hugo community 🐦 Twitter: @wowchemy @GeorgeCushen #MadeWithWowchemy 💡 Request a feature or report a bug for Wowchemy ⬆️ Updating Wowchemy? View the Update Guide and Release Notes  Crowd-funded open-source software To help us develop this template and software sustainably under the MIT license, we ask all individuals and businesses that use it to help support its ongoing maintenance and development via sponsorship.\n❤️ Click here to become a sponsor and help support Wowchemy\u0026rsquo;s future ❤️ As a token of appreciation for sponsoring, you can unlock these awesome rewards and extra features 🦄✨\nEcosystem  Hugo Academic CLI: Automatically import publications from BibTeX  Inspiration Check out the latest demo of what you\u0026rsquo;ll get in less than 10 minutes, or view the showcase of personal, project, and business sites.\nFeatures  Page builder - Create anything with widgets and elements Edit any type of content - Blog posts, publications, talks, slides, projects, and more! Create content in Markdown, Jupyter, or RStudio Plugin System - Fully customizable color and font themes Display Code and Math - Code highlighting and LaTeX math supported Integrations - Google Analytics, Disqus commenting, Maps, Contact Forms, and more! Beautiful Site - Simple and refreshing one page design Industry-Leading SEO - Help get your website found on search engines and social media Media Galleries - Display your images and videos with captions in a customizable gallery Mobile Friendly - Look amazing on every screen with a mobile friendly version of your site Multi-language - 34+ language packs including English, 中文, and Português Multi-user - Each author gets their own profile page Privacy Pack - Assists with GDPR Stand Out - Bring your site to life with animation, parallax backgrounds, and scroll effects One-Click Deployment - No servers. No databases. Only files.  Themes Wowchemy and its templates come with automatic day (light) and night (dark) mode built-in. Alternatively, visitors can choose their preferred mode - click the moon icon in the top right of the Demo to see it in action! Day/night mode can also be disabled by the site admin in params.toml.\nChoose a stunning theme and font for your site. Themes are fully customizable.\nLicense Copyright 2016-present George Cushen.\nReleased under the MIT license.\n","date":1607817600,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1607817600,"objectID":"279b9966ca9cf3121ce924dca452bb1c","permalink":"https://sianderson.github.io/post/getting-started/","publishdate":"2020-12-13T00:00:00Z","relpermalink":"/post/getting-started/","section":"post","summary":"Welcome 👋 We know that first impressions are important, so we've populated your new site with some initial content to help you get familiar with everything in no time.","tags":["Academic","开源"],"title":"Welcome to Wowchemy, the website builder for Hugo","type":"post"},{"authors":null,"categories":null,"content":"   Phytoplankton thermal reaction norms   Temperature influences the metabolic rates and geographic ranges of phytoplankton, with implications for global primary production and biogeochemical cycling. Variation in the physiological effects of temperature across species and phytoplankton functional types (PFTs) can lead to altered marine phytoplankton biogeography and community structure. We assessed phytoplankton thermal trait variability in order to a) better understand how thermal trait variability could explain phytoplankton community dynamics and b) assess the relative capacity of phytoplankton to cope with thermal change.\n","date":1580515200,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1580515200,"objectID":"946243d48c445ef06fac8b7e4c3cf43e","permalink":"https://sianderson.github.io/project/thermal_traits/","publishdate":"2020-02-01T00:00:00Z","relpermalink":"/project/thermal_traits/","section":"project","summary":"Characterizing the phytoplankton thermal response and employing empirical data in ecological simulations and global projections","tags":["Temperature","Trait-based ecology","Modeling","Global change"],"title":"Thermal Traits","type":"project"},{"authors":["Stephanie I. Anderson","Katharine McDuffie","Sunshine Menezes"],"categories":[],"content":"","date":1577836800,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1611982520,"objectID":"82ca7b9807b5634be836baa4cc44fd09","permalink":"https://sianderson.github.io/publication/anderson-2020-a/","publishdate":"2021-01-30T04:55:19.981449Z","relpermalink":"/publication/anderson-2020-a/","section":"publication","summary":"","tags":[],"title":"Science Communication for Natural Resource Managers: Techniques and Examples in Marine Systems","type":"publication"},{"authors":["**Stephanie I. Anderson**","Tatiana A. Rynearson"],"categories":[],"content":"","date":1577836800,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1611982008,"objectID":"5cab07b50b26868daf56d087357fce8c","permalink":"https://sianderson.github.io/publication/anderson-2020/","publishdate":"2021-01-30T04:46:47.290197Z","relpermalink":"/publication/anderson-2020/","section":"publication","summary":"","tags":[],"title":"Variability Approaching the Thermal Limits Can Drive Diatom Community Dynamics","type":"publication"},{"authors":null,"categories":null,"content":"   Chaetoceros Diatom Colony   Phytoplankton communities are influenced by a complex interplay of environmental variables. Temperature and nutrient concentration are two particularly important factors driving phytoplankton growth and composition, but are often investigated separately in the lab. This work investigated the individual and interactive effects of temperature and nutrient concentration on the composition and physiology of a phytoplankton community.\n","date":1488326400,"expirydate":-62135596800,"kind":"page","lang":"en","lastmod":1488326400,"objectID":"17aa4e58d21007b982f44cf3016615a7","permalink":"https://sianderson.github.io/project/temperature-nutrient-interplay/","publishdate":"2017-03-01T00:00:00Z","relpermalink":"/project/temperature-nutrient-interplay/","section":"project","summary":"Investigating the interactive effects of temperature and nutrient availability on phytoplankton community composition","tags":["Species Sorting","Trait-based ecology","Temperature"],"title":"Temperature-Nutrient Interplay","type":"project"}]