{"id":9858,"date":"2015-10-13T12:34:15","date_gmt":"2015-10-13T16:34:15","guid":{"rendered":"https:\/\/web.uri.edu\/rinsfepscor\/?p=9858"},"modified":"2015-10-13T12:34:15","modified_gmt":"2015-10-13T16:34:15","slug":"rose-martin-2","status":"publish","type":"post","link":"https:\/\/web.uri.edu\/rinsfepscor\/2015\/10\/13\/rose-martin-2\/","title":{"rendered":"Let it grow"},"content":{"rendered":"<p><strong>URI graduate researcher\u00a0discovers benefits of\u00a0invasive marsh grass<\/strong><\/p>\n<p><a href=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/Van-full-of-plants-1.jpg\" rel=\"lightbox[9858]\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-9864 size-full\" title=\"Rose Martin sits with collected soil cores from Phragmites-invaded portions of Fox Hill Marsh in Jamestown, RI. These potted cores were used for a mesocosm experiment that tested effects of nitrogen enrichment and simulated climate change on greenhouse gas fluxes. | Courtesy photo, Rose Martin\" src=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/Van-full-of-plants-1.jpg\" alt=\"Collected soil cores from Phramites-invaded portions of Fox Hill Marsh\" width=\"640\" height=\"501\" \/><\/a><\/p>\n<blockquote><p>Having powered through her doctoral work in three years, newly minted University of Rhode Island Ph.D. Rose Martin credits her Rhode Island EPSCoR graduate fellowship as the most productive year of her research.<\/p><\/blockquote>\n<p><em><a href=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/weareriepscor-2.jpg\"  rel=\"lightbox[9858] attachment wp-att-11289\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-11289\" src=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/weareriepscor-2-220x300.jpg\" alt=\"weareriepscor-2\" width=\"125\" height=\"171\" \/><\/a>Phragmites australis<\/em>, an invasive grass that often inundates salt marshes, is the target of costly and difficult eradication efforts.\u00a0However, the research work of a Rhode Island EPSCoR graduate fellow finds that we may be better off leaving the grass alone.<\/p>\n<p>\u201cI think it\u2019s fair to say that the take home message is that the presence of the plant may contribute to the marsh\u2019s function of greenhouse gas uptake,\u201d said Rose Martin, a <a href=\"http:\/\/ww2.uri.edu\/\" target=\"_blank\">University of Rhode Island<\/a> doctoral student who recently gave her dissertation on the <em>Phragmites<\/em> role in\u00a0carbon dioxide and methane emission and uptake in coastal marshes.<\/p>\n<p>\u201cOften times, diminishing the cover of <em>Phragmites<\/em> is one of the goals of marsh restoration because it has a negative impact on biodiversity and wildlife in marshes,\u201d Martin explained. \u201cBut, this dissertation joins the growing body of literature that says the plants\u2019 presence might support other functions of the marsh ecosystem.<\/p>\n<p>\u201cThe results suggest that perhaps <em>Phragmites<\/em> is not the absolute worst thing that could be happening to a marsh.\u201d<\/p>\n<p>For her dissertation \u2014 Coastal Marshes of the Anthropocene: A potential role for an invasive species in maintaining ecosystem function \u2014\u00a0Martin said she wanted to know whether the carbon dioxide uptake of <em>Phragmites<\/em> was great enough to offset removal benefits. What she found, she said, was that a marsh dominated by <em>Phragmites<\/em> took up more carbon dioxide and at a higher rate than native vegetation marshes.<\/p>\n<p>With plots in three Rhode Island locations \u2014 Round Marsh, Fox Hill Marsh, and Sage Lot Pond \u2014 Martin also found that projected temperature hikes from climate change would not alter the <em>Phragmites<\/em> invasion of salt marshes.<\/p>\n<p><a href=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/CHAMBER-1.jpg\" rel=\"lightbox[9858]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-9862\" title=\"A greenhouse gas flux chamber is used to measure CO2 and CH4 uptake and emissions in Phragmites-invaded coastal marshes. | Courtesy photo, Rose Martin\" src=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/CHAMBER-1.jpg\" alt=\"greenhouse gas flux chamber\" width=\"350\" height=\"469\" \/><\/a><\/p>\n<h3><strong>In pursuit of science<\/strong><\/h3>\n<p>Introducing Martin to the audience gathered to hear her presentation one recent morning in the URI Coastal Institute auditorium, Assistant Professor Serena Moseman-Valtierra reeled off a list of accomplishments:<\/p>\n<ul>\n<li>Best Graduate Oral Presentation, 2014 New England Estuarine Research Society (NEERS) fall meeting, \u201cFrom a <em>Spartina patens<\/em> meadow to a <em>Phragmites<\/em> jungle: a biological invasion may change coastal carbon cycling\u201d<\/li>\n<li>Four manuscripts from her thesis chapters in various stages of the publication process, and contributing author on three more papers<\/li>\n<li>Rhode Island NSF EPSCoR graduate fellow, 2013-14; research support 2014-15<\/li>\n<li>At least five presentations at national and regional conferences<\/li>\n<li>Mentor to undergraduates and outreach volunteer for RI EPSCoR<\/li>\n<\/ul>\n<p>Most impressively, perhaps, Martin achieved all of this while earning her Ph.D. in a blistering, three-year pace.<\/p>\n<p>And, true to form, she went straight from her dissertation to a post-doctoral post at the Environmental Protection Agency (EPA) in Narragansett. Oak Ridge Institute for Science and Education (ORISE) administers the position through an interagency agreement between the Department of Energy (DOE) and the EPA.<\/p>\n<p>Martin arrived in Moseman-Valtierra\u2019s lab in the summer of 2012, with a master\u2019s in natural resources and the environment from the <a href=\"http:\/\/uconn.edu\">University of Connecticut<\/a> and a bachelor\u2019s in environmental science from URI. On September 28, 2015, she presented her dissertation.<\/p>\n<p>\u201cI am extraordinarily honored to be a mentor for Rose Martin,\u201d Moseman-Valtierra said, before leading into Martin\u2019s achievements. \u201cShe has set a dangerous precedent for future students.\u201d<\/p>\n<h3><strong>Grasses and greenhouse gases<\/strong><\/h3>\n<p>The term anthropocene denotes the era in the earth\u2019s history when humankind has dominated the function of ecosystems, bringing on climate change, influencing nutrient cycling and introducing invasive species.<\/p>\n<p>Coastal ecosystems, which encompass the sub-tidal part of an estuary and the fresh and brackish marshes further upstream, serve as a critical buffer between land and saltwater. The salt marshes also play a vital role in the ecosystem by sequestering carbon dioxide \u2014 actually, at a higher rate than tropical rain forests.<\/p>\n<p>Yet, for centuries, these intertidal zones have weathered the brunt of human activity, filled in and built over to pave the way for development.<\/p>\n<p>Martin said she wanted to gain a better understanding of how coastal systems functioned under human dominance of the ecosystem, specifically looking at the potential for enhancement of greenhouse gas uptake in marshes dominated by <em>Phragmites.<\/em> The species, which can be found in old herbarium records dating back to the early 1900s, spreads easily, starting in the upland area and spreading into the salt marsh.<\/p>\n<p><a href=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/May-2014-Passeonkquis-Rose-1.jpg\" rel=\"lightbox[9858]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-9863\" title=\"Former RI EPSCoR graduate fellow Rose Martin records results of soil variable data collection at Passeonkquis Cove marsh in Warwick, RI, after greenhouse gas flux measurements. | Courtesy photo, Rose Martin\" src=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/May-2014-Passeonkquis-Rose-1-300x218.jpg\" alt=\"Martin records data after greenhouse gas flux measurements\" width=\"450\" height=\"326\" \/><\/a><\/p>\n<p><em>Phragmites<\/em> is known to drive changes in carbon cycling of salt marshes, moving gases from the atmosphere through its above ground plant structure and root system below the soil. The grass also has the ability to change the soil it invades.<\/p>\n<p>\u201cOne of the services coastal marshes provide is that they store or sequester abundant carbon dioxide,\u201d explained Martin. \u201cIf carbon dioxide is stored in the soil of the marsh, it\u2019s not entering the atmosphere in forms of greenhouse gases that cause climate change.\u201d<\/p>\n<p>Salt marshes, in particular, are extremely efficient in carbon dioxide uptake, according to Martin. When marsh plants die, they decompose slowly and the material becomes part of the soil that builds up, trapping the carbon.<\/p>\n<p>In the final experiment of her research, Martin simulated climate change under projections for the year 2100, with elevated temperatures and the levels of carbon dioxide in the atmosphere. She measured the greenhouse gas fluxes that would result from both <em>Phragmites<\/em> and native vegetation, and found that with the amount of carbon dioxide <em>Phragmites<\/em> could take up, there was a good chance the grass could balance out the increased amount of methane emitted.<\/p>\n<p>\u201cIt\u2019s interesting to think about the idea, that the effect could be a mixed bag,\u201d said Martin. \u201cThe results of my dissertation show that although <em>Phragmites<\/em> is associated with negative consequences, there is potential for its presence in marshes to maintain or even enhance the service of GHG (greenhouse gas) uptake.\u201d<\/p>\n<h3><strong>The path taken<\/strong><\/h3>\n<p>Martin\u2019s extraordinarily high level of academic achievement and scientific discovery seems unlikely at first glance for a youngster who saw the field as inaccessible. Conducting outreach with Rhode Island EPSCoR, Martin has recounted her journey for audiences of middle and high school students:<\/p>\n<p>\u201cEveryone else in my family sells tile and my parents are teachers, so I\u2019m kind of the odd one out.\u201d<\/p>\n<p><a href=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/DSC_0001.jpg\" rel=\"lightbox[9858]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-9873 size-medium\" title=\"Rose Martin reviews slides for the presentation of her dissertation. | Photo by Amy Dunkle\" src=\"https:\/\/web.uri.edu\/wp-content\/uploads\/sites\/848\/DSC_0001-300x223.jpg\" alt=\"Rose Martin\" width=\"300\" height=\"223\" \/><\/a><\/p>\n<p>She said that when she was growing up in Rhode Island, she didn\u2019t know any scientists and the picture in her mind was \u201can old man in a white coat.\u201d Still her parents reinforced the mindset that education was power; that no one could take away her\u00a0education.<\/p>\n<p>She initially enrolled at URI with microbiology as her intended major, but hit a roadblock. Her grades were lackluster and she couldn\u2019t figure out her direction.<\/p>\n<p>But, she wound up in a soil science class and the subject matter resonated. The professor suggested she switch her major to environmental science. He and other mentors along the way helped her steer a new course and she embraced the possibilities offered by a graduate degree and research.<\/p>\n<p>After that turning point, Martin said, she had the good fortune to meet Moseman-Valtierra and benefit from her mentoring: \u201cSerena is the first female advisor and first female mentor I\u2019ve had. It\u2019s nice to have someone who has gone through the same struggles as a young female scientist. We\u2019ve seen a lot of progress, but there is a long way to go for the representation of women and women of color.\u201d<\/p>\n<p>Martin said her EPSCoR fellowship also played a crucial role, freeing her from the obligation of teaching or working as a research assistant and allowing her to devote her time to research and collaboration.<\/p>\n<p>\u201cThat was my most productive year in terms of research and manuscripts,\u201d said Martin. \u201cAlso, EPSCoR funding for research supplies was used to purchase materials to build the tall gas flux chambers I used for <em>Phragmites<\/em> measurements.\u00a0They made my research possible, and will continue to be used by Serena&#8217;s lab.\u201d<\/p>\n<p>Next, looking ahead to her post-doctoral position, Martin said her work would take her to an urban ecosystem in Puerto Rico, the resulting environmental degradation and the impact on the health of people in communities using the watershed. The research will focus on the interface between environmental degradation and human health.<\/p>\n<p>\u201cI\u2019m very excited,\u201d Martin said. \u201cIt will broaden my understanding of how people work with the environment. My Ph.D. focused on how people affect the environment. Now, I will be on the other side of the relationship.\u201d<\/p>\n<p style=\"text-align: right\"><em>By Amy Dunkle<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>URI graduate researcher\u00a0discovers benefits of\u00a0invasive marsh grass Having powered through her doctoral work in three years, newly minted University of Rhode Island Ph.D. Rose Martin credits her Rhode Island EPSCoR graduate fellowship as the most productive year of her research. Phragmites australis, an invasive grass that often inundates salt marshes, is the target of costly [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[21,1,63,66],"tags":[],"class_list":["post-9858","post","type-post","status-publish","format-standard","hentry","category-news","category-uncategorized","category-we-are-ri-epscor","category-epscor-grads"],"acf":[],"_links":{"self":[{"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/posts\/9858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/comments?post=9858"}],"version-history":[{"count":0,"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/posts\/9858\/revisions"}],"wp:attachment":[{"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/media?parent=9858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/categories?post=9858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/web.uri.edu\/rinsfepscor\/wp-json\/wp\/v2\/tags?post=9858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}