University of Southern Maine

University of Southern Maine: Digital Commons@USM
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    28130 research outputs found

    The Underland Chronicles

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    Created by a 4th grade student from Great Works Elementary in Eliot.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1211/thumbnail.jp

    Fairy Island

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    Created by a 4th grade student from Great Falls Elementary in Gorham.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1216/thumbnail.jp

    Rapper Island

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    Created by a 6th grade student from York Middle School in York.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1275/thumbnail.jp

    Gnome Island

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    Created by a 4th grade student from Great Falls Elementary in Gorham.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1295/thumbnail.jp

    Soccer Island

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    Created by a 4th grade student from Marshwood Great Works School in Eliot.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1343/thumbnail.jp

    Cavichara Desert

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    Created by a 5th grade student from Falmouth Elementary School in Falmouth.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1346/thumbnail.jp

    Population dynamics, life history characteristics, and environmental drivers of Neomysis americana in the Damariscotta River estuary

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    Mysid shrimp (Neomysis americana) play a pivotal role in estuarine food webs by linking primary producers to higher trophic levels and serving as an important food source for commercially valuable fish. Despite their ecological significance, mysids are often under sampled, leading to gaps in our understanding of their population dynamics and life history traits. My study investigated N. americana over a full year (June 2023 to May 2024) in the temperate Damariscotta River Estuary in Maine. My research focused on how environmental factors such as temperature, turbidity, salinity, chlorophyll-a, and zooplankton biomass affect mysid density and reproduction. Temperature emerged as a key factor, with warmer temperatures leading to higher mysid density. My results also indicated distinct overwintering cohorts, highlighting that at least a portion of the population remains in the estuary year-round, with seasonal shifts in size distribution. These findings enhance our understanding of N. americana\u27s ecological role in temperate estuaries, building on previous research of this important species

    Infinitesimal Elements in Cartesian, Cylindrical and Spherical Coordinate Systems

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    In this chapter we introduce you to the infinitesimal surface and volument elements in Cartesian, Cylindrical and Spherical coordinate systems. Electromagnetic fields is based on multi-variate vector calculus. The following three documents show, how the infinitesimal surface area elements are defined in Catesian, Cylindrical and Spherical coordinate systems.https://digitalcommons.usm.maine.edu/oer_engineering_maxworth_emfields/1000/thumbnail.jp

    Tropical Island World

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    Created by a 5th grade student from Marshwood Great Works School in South Berwick.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1000/thumbnail.jp

    Castle Island

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    Created by a 4th grade student from Harriet Beecher Stowe Elem in Brunswick.https://digitalcommons.usm.maine.edu/mapmaking-contest-2025/1017/thumbnail.jp

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    University of Southern Maine: Digital Commons@USM
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