Brugia Malayi - Clark Science Center - Smith College

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When researching local ecosystems, <strong>Smith</strong> students used kite aerial photography to collect images of mangrove and lagoons. <strong>Smith</strong> students worked with Hol Chan Marine Reserve and WWF professors to create beach profiles of turtle nesting sites. 2012 123
Effect of Habitat Structure Formed by Macroalgal Foundation Species on Associated Fauna in Rocky Intertidal and Marsh-Cordgrass Ecosystems Emily Peake Habitat structure can have a profound impact on functions of an ecosystem. A study which looked at the two algal foundation species in the marsh-cordgrass ecosystem found that the two work synergistically in how they provide a habitat for epifaunal species in that ecosystem. 1 However, little is known about the difference in structural habitat provided by the macroalgae in the rocky intertidal (Fucus versiculosus and Ascophyllum nodosum) and salt marsh areas (Fucus versiculosus ecad and Ascophyllum nodosum ecad). Our summer research focused on two primary questions: 1) What is the difference in the structural habitat provided by macroalgae in rocky intertidal areas and the morphologically distinct ecads of the salt marsh areas? 2) How does the difference in the structural habitat affect snails (Littorina spp.) and crabs (Carcinas maenas)? The primary methods used to quantify differences between rocky intertidal and marsh-cordgrass macroalgae included an analysis of photographs oriented both vertically and horizontally to the algae mats at low tide. These photographs enabled us to quantify the complexity of both species in each ecosystem by measuring surface convolution and the frequency and size of interstitial spaces within the growing algae. Another method used was a series of predation trials; during which forty wire-mesh cages containing algae, snails and crabs were deployed in the low salt marsh zone over a period of one week. This experiment tested the ability of each algae to provide a refuge for snails from crab predation. A second experiment conducted during the summer was a snail growth experiment, in which snails were placed in individual mesocosm containers in an environmental chamber for up to five weeks. This experiment examined the preferred food sources for two snail species. We also conducted species surveys at all sites in order to estimate the size and density of snails and crabs and the average biomass of algae in the different areas. All experiments and fieldwork were conducted at the Wells Nation Estuarine Research Reserve in Wells, Maine (43 20’12.80” N, 70 32’28.43” W), at nearby Kennebunk Middle Beach in Kennebunk, Maine (43 23’04.31’’ N, 70 32’38.36” W) and at Perkin’s Cove in Ogunquit, Maine (43 14’50.03” N, 70 36’25.68” W). Preliminary results showed ecads of the marsh-cordgrass area being more complex in terms of interstitial space and surface convolution analyses than algae growing in the rocky intertidal zones. (Supported by the Agnes Shedd Andreae 1932 Research Internship Fund) Advisors: Joanne Benkley and Jennifer Dijkstra, PhD National Oceanic and Atmospheric Administration (NOAA), National Estuarine Research Reserve, Wells, ME References: 1 Dijkstra, J.A. et al. 2011. Species-specific mediation of temperature and community interactions by multiple foundation species. Oikos 121: 646-654. 2012 124
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2012 Women in Science Clark Science
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We are pleased to recognize the gen
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Biological Sciences (continued) Nam
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Confirming a High-Redshift Galaxy C
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Hsp25 expression was quantified by
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Function of Slit and Robo in Axon G
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Developing Forms and Maps for Data
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Smith College’s Bird Collection:
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Soil Seed Bank Exploration: Compari
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The Diversity and Ecology of Testat
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Landscape Field Studies Seneca Gray
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Temperature-Dependent Regulation of
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The Function of the Tail in Aquatic
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Radial Glia Vital for the Prolifera
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Generating Images of Swarming Motil
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Identification of pdfr-1 as a Funct
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Updating and Curating the Smith Col
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A PCR-Free Assay for the Detection
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Figure 1: Compound separation of th
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Medicinal Plants: Hoax or Potential
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Figure 3: Mortality of Brugia pahan
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The Stabilizing Effect of Metallopo
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NMR Analysis of Ion Transport in Li
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