{"id":7756,"date":"2021-03-31T09:58:00","date_gmt":"2021-03-31T14:58:00","guid":{"rendered":"https:\/\/ewn.erdc.dren.mil\/?p=7756"},"modified":"2023-02-25T16:16:21","modified_gmt":"2023-02-25T22:16:21","slug":"monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project","status":"publish","type":"publications","link":"https:\/\/ewn.erdc.dren.mil\/publications\/archive\/monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project\/","title":{"rendered":"Monitoring the Milwaukee Harbor Breakwater: An Engineering With Nature<sub>\u00ae<\/sub> (EWN<sub>\u00ae<\/sub>) Demonstration Project"},"content":{"rendered":"\n<p><strong>ERDC Technical Report<\/strong><\/p>\n\n\n\n<p class=\"float-left\">The US Army Corps of Engineers (USACE) maintains breakwaters in Mil-waukee Harbor. USACE\u2019s Engineering With Nature\u00ae (EWN) breakwater demonstration project created rocky aquatic habitat with cobbles (10\u201320 cm) covering boulders (6\u20138 metric tons) along a 152 m section. A prolific population of Hemimysis anomala, an introduced Pontocaspian mysid and important food source for local pelagic fishes, was significantly (p &lt; .05) more abundant on cobbles versus boulders. Food-habits data of ale-wife (Alosa pseudoharengus) and rainbow smelt (Osmerus mordax) pro-vided evidence that H. anomala were a common prey item. Night surveys and gill netting confirmed O. mordax preferred foraging on the cobbles (p &lt; .05) and consumed more H. anomala than at the reference site (p &lt; .05). H. anomala comprised a significant portion of the diets of young-of-the-year (YOY) yellow perch (Perca flavescens), YOY largemouth bass (Micropterus salmoides), and juvenile rock bass (Ambloplites rupestris) caught on the breakwater. The natural features\u2019 construction on the break-water increased the available habitat for this benthopelagic macroinverte-brate and created a novel ecosystem benefiting forage fish and a nursery habitat benefiting nearshore game fish juveniles. These data will encourage the application of EWN concepts during structural repairs at other built navigation infrastructure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ERDC Technical Report The US Army Corps of Engineers (USACE) maintains breakwaters in Mil-waukee Harbor. USACE\u2019s Engineering With Nature\u00ae (EWN) breakwater demonstration project created rocky aquatic habitat with cobbles (10\u201320 cm) covering boulders (6\u20138 metric tons) along a 152 m section. A prolific population of Hemimysis anomala, an introduced Pontocaspian mysid and important food source [&hellip;]<\/p>\n","protected":false},"featured_media":1558,"template":"","tags":[],"class_list":["post-7756","publications","type-publications","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Monitoring the Milwaukee Harbor Breakwater: An Engineering With Nature\u00ae (EWN\u00ae) Demonstration Project - Engineering With Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ewn.erdc.dren.mil\/publications\/archive\/monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Monitoring the Milwaukee Harbor Breakwater: An Engineering With Nature\u00ae (EWN\u00ae) Demonstration Project - Engineering With Nature\" \/>\n<meta property=\"og:description\" content=\"ERDC Technical Report The US Army Corps of Engineers (USACE) maintains breakwaters in Mil-waukee Harbor. USACE\u2019s Engineering With Nature\u00ae (EWN) breakwater demonstration project created rocky aquatic habitat with cobbles (10\u201320 cm) covering boulders (6\u20138 metric tons) along a 152 m section. A prolific population of Hemimysis anomala, an introduced Pontocaspian mysid and important food source [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ewn.erdc.dren.mil\/publications\/archive\/monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project\/\" \/>\n<meta property=\"og:site_name\" content=\"Engineering With Nature\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-25T22:16:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ewn.erdc.dren.mil\/wp-content\/uploads\/2021\/03\/TR-21-2cover.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"557\" \/>\n\t<meta property=\"og:image:height\" content=\"722\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ewn.erdc.dren.mil\\\/publications\\\/archive\\\/monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project\\\/\",\"url\":\"https:\\\/\\\/ewn.erdc.dren.mil\\\/publications\\\/archive\\\/monitoring-the-milwaukee-harbor-breakwater-an-engineering-with-nature-ewn-demonstration-project\\\/\",\"name\":\"Monitoring the Milwaukee Harbor Breakwater: An Engineering With Nature\u00ae (EWN\u00ae) Demonstration Project - 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USACE\u2019s Engineering With Nature\u00ae (EWN) breakwater demonstration project created rocky aquatic habitat with cobbles (10\u201320 cm) covering boulders (6\u20138 metric tons) along a 152 m section. 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