{"id":15872,"date":"2021-11-23T12:13:19","date_gmt":"2021-11-23T17:13:19","guid":{"rendered":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/?page_id=15872"},"modified":"2024-08-16T16:04:04","modified_gmt":"2024-08-16T20:04:04","slug":"naturalists-notebook-winter-2021","status":"publish","type":"post","link":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/naturalists-notebook-winter-2021\/","title":{"rendered":"Naturalist\u2019s Notebook: What\u2019s the Status of American Eels in North Carolina\u2019s Tidal Creeks?"},"content":{"rendered":"\n\n\n\n\n<p>American eels support recreational and commercial fisheries in the eastern United States and are one of the most mysterious creatures in our waters.&nbsp;They are a \u201ccatadromous\u201d species, which means they spend their larval stages in ocean environments and their juvenile and adult stages between coastal and freshwater environments. Because they move freely between these environments, they potentially are a resilient species.<\/p>\n\n\n\n<p>But in recent years, the perceived health of the species \u2014 and the perceived health of the tidal creek habitat of juvenile eels \u2014 has been on the decline.<\/p>\n\n\n\n<p>While habitat loss, poor water quality, and overfishing might all play a role in the decline of the American eel population, determining which factors actually contribute to fewer numbers of American eels is much more challenging.<\/p>\n\n\n\n<p>Given that little is known about American eels in coastal estuaries, tidal creeks present an interesting landscape to explore the link between habitat and juvenile eel abundance and survival rates. From 2015 to 2019, scientists from North Carolina State University studied how development along tidal creeks affected the catch, survival, and mortality rates of yellow- phase American eels.<\/p>\n\n\n\n<p>The research team trapped and tagged 68 yellow-phase American eels and then recaptured eels at eight weeks to estimate catch rates in tidal creeks in Carteret County, North Carolina. The team also used watershed runoff and saltwater marsh cover as indicators of development in this region.<\/p>\n\n\n\n<p>They found that survival of the eels is low in comparison to other locations along coastal habitats on the Atlantic. These low survival rates might be due to natural causes or fishing mortality in this region, but this needs further study.<\/p>\n\n\n\n<p>Eels caught for this study were between 6 and 18 inches long. Catch rates were higher in the spring and lower in the winter.<\/p>\n\n\n\n<p>Development along tidal creeks did not appear to reduce yellow-phase American eel catch rates. In fact, culverts even had a positive effect on the catch rates. However, this does not rule out possible adverse effects that large-scale development might have on the survival of yellow-phase American eels.<\/p>\n\n\n\n<p><em>This story originally appeared on <a href=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\" target=\"_blank\" rel=\"noopener\">HookLineScience.com<\/a><\/em><\/p>\n\n\n\n<p><em>North Carolina Sea Grant partially funded this project.<\/em><\/p>\n\n\n\n<p>photo credit: Samiris Suleman Orozco<\/p>\n\n\n\n<p><em>Ambar Torres is pursuing a master of science in fisheries, wildlife, and conservation biology at NC State. Her research addresses population demographics and climate change implications for the American eel in tropical streams.<\/em><\/p>\n\n\n<div class=\"wp-block-ncst-related-stories\"><h2 class=\"related-stories__label\">Related<\/h2><div class=\"ncst-component__related-stories-container\"><a \n      href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/magazine\/winter-2021\/\"\n      class=\"ncst-component__bold-link text-link\"\n                >\n    <span class=\"text\">Winter 2021 Issue<\/span><span class=\"arrow-indicator\"><svg class=\"wolficon wolficon-arrow-right-bold\" role=\"img\"  aria-hidden=\"true\">\n\t\t\t\n\t\t\t<use xlink:href=\"#wolficon-arrow-right-bold\">\n\t\t<\/svg><\/span>\n    <\/a>\n  <\/div><\/div>\n\n","protected":false,"raw":"<!-- wp:ncst\/dynamic-header {\"block\":\"ncst\/default-immersive-post-header\"} -->\n<!-- wp:ncst\/default-immersive-post-header {\"backgroundColor\":\"custombg_one\",\"displayCategoryID\":645,\"subtitle\":\"Scientists looked at whether development on tidal creek terrain affected the survival rate of yellow-phase American eels.\"} \/-->\n<!-- \/wp:ncst\/dynamic-header -->\n\n<!-- wp:paragraph -->\n<p>American eels support recreational and commercial fisheries in the eastern United States and are one of the most mysterious creatures in our waters.&nbsp;They are a \u201ccatadromous\u201d species, which means they spend their larval stages in ocean environments and their juvenile and adult stages between coastal and freshwater environments. Because they move freely between these environments, they potentially are a resilient species.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>But in recent years, the perceived health of the species \u2014 and the perceived health of the tidal creek habitat of juvenile eels \u2014 has been on the decline.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>While habitat loss, poor water quality, and overfishing might all play a role in the decline of the American eel population, determining which factors actually contribute to fewer numbers of American eels is much more challenging.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Given that little is known about American eels in coastal estuaries, tidal creeks present an interesting landscape to explore the link between habitat and juvenile eel abundance and survival rates. From 2015 to 2019, scientists from North Carolina State University studied how development along tidal creeks affected the catch, survival, and mortality rates of yellow- phase American eels.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>The research team trapped and tagged 68 yellow-phase American eels and then recaptured eels at eight weeks to estimate catch rates in tidal creeks in Carteret County, North Carolina. The team also used watershed runoff and saltwater marsh cover as indicators of development in this region.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>They found that survival of the eels is low in comparison to other locations along coastal habitats on the Atlantic. These low survival rates might be due to natural causes or fishing mortality in this region, but this needs further study.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Eels caught for this study were between 6 and 18 inches long. Catch rates were higher in the spring and lower in the winter.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Development along tidal creeks did not appear to reduce yellow-phase American eel catch rates. In fact, culverts even had a positive effect on the catch rates. However, this does not rule out possible adverse effects that large-scale development might have on the survival of yellow-phase American eels.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>This story originally appeared on <a href=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\" target=\"_blank\" rel=\"noopener\">HookLineScience.com<\/a><\/em><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>North Carolina Sea Grant partially funded this project.<\/em><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>photo credit: Samiris Suleman Orozco<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>Ambar Torres is pursuing a master of science in fisheries, wildlife, and conservation biology at NC State. Her research addresses population demographics and climate change implications for the American eel in tropical streams.<\/em><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:ncst\/related-stories -->\n<div class=\"wp-block-ncst-related-stories\"><h2 class=\"related-stories__label\">Related<\/h2><div class=\"ncst-component__related-stories-container\"><!-- wp:ncst\/bold-link {\"url\":\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/magazine\/winter-2021\/\",\"text\":\"Winter 2021 Issue\",\"target\":false} -->\n<a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/magazine\/winter-2021\/\" class=\"wp-block-ncst-bold-link ncst-component__bold-link text-link\" data-ua-cat=\"Bold Link Block\" data-ua-action=\"Bold Link Click\" data-ua-label=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/magazine\/winter-2021\/\"><span class=\"text\">Winter 2021 Issue<\/span><span class=\"arrow-indicator\"><svg class=\"wolficon\" role=\"img\" aria-hidden=\"true\"><use xlink:href=\"#wolficon-arrow-right-bold\" \/><\/svg><\/span><\/a>\n<!-- \/wp:ncst\/bold-link --><\/div><\/div>\n<!-- \/wp:ncst\/related-stories -->"},"excerpt":{"rendered":"<p>Scientists looked at whether development on tidal creek terrain affected the survival rate of yellow-phase American eels.<\/p>\n","protected":false},"author":63,"featured_media":15892,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"views\/single-immersive.blade.php","format":"standard","meta":{"_acf_changed":false,"source":"","ncst_custom_author":"Ambar Torres","ncst_show_custom_author":true,"ncst_dynamicHeaderBlockName":"ncst\/default-immersive-post-header","ncst_dynamicHeaderData":"{\"backgroundColor\":\"custombg_one\",\"displayCategoryID\":645,\"showAuthor\":true,\"showDate\":true,\"showFeaturedVideo\":false,\"subtitle\":\"Scientists looked at whether development on tidal creek terrain affected the survival rate of yellow-phase American eels.\"}","ncst_content_audit_freq":"","ncst_content_audit_date":"","ncst_content_audit_display":false,"ncst_backToTopFlag":"","footnotes":""},"categories":[637,1547,599,589,645],"tags":[],"_ncst_magazine_issue":[652],"class_list":["post-15872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-637","category-healthy-ecosystems","category-animals","category-naturalists-notebook","category-winter-2021"],"displayCategory":{"term_id":645,"name":"Winter 2021","slug":"winter-2021","term_group":0,"term_taxonomy_id":646,"taxonomy":"category","description":"","parent":637,"count":12,"filter":"raw"},"acf":{"ncst_posts_meta_modified_date":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Naturalist\u2019s Notebook: What\u2019s the Status of American Eels in North Carolina\u2019s Tidal Creeks? 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