{"id":13421,"date":"2020-06-16T10:07:12","date_gmt":"2020-06-16T14:07:12","guid":{"rendered":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/?page_id=13421"},"modified":"2024-08-15T13:11:13","modified_gmt":"2024-08-15T17:11:13","slug":"naturalists-notebook-summer-2020","status":"publish","type":"post","link":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/naturalists-notebook-summer-2020\/","title":{"rendered":"Naturalists Notebook: In Search of Ancient Oysters"},"content":{"rendered":"\n\n\n\n\n<p class=\"wp-block-paragraph\">Restored oyster reefs provide healthy habitats and great places for fishing. Ongoing threats to oysters, such as disease and harvesting, mean that unless we make deliberate efforts to restore them, we are in danger of losing the benefits that oyster reefs provide.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oysters are a valuable seafood product, and restoration and conservation efforts have historically focused on protecting juvenile oysters. Mature oysters devote more energy to reproduction than shell growth, and they could be a valuable asset that currently receives inadequate levels of protection. Learning more about oysters of the past, which might have faced fewer challenges, could inform how we think about both juvenile and mature oysters&nbsp;when conceiving new strategies for oyster management.<\/p>\n\n\n\n<figure class=\"wp-block-image alignwide\"><a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2.jpg\" data-fullsize=\"2550x1699\" data-zoom=\"true\"><img loading=\"lazy\" decoding=\"async\" width=\"2550\" height=\"1699\" src=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2.jpg\" alt=\"Oysters from a feeder stream to the Chesapeake Bay, courtesy of NOAA\" class=\"wp-image-13442\" srcset=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2.jpg 2550w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2-300x200.jpg 300w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2-1024x682.jpg 1024w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2-768x512.jpg 768w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2-1536x1023.jpg 1536w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><figcaption class=\"wp-element-caption\">Oysters from a feeder stream to the Chesapeake Bay, courtesy of NOAA<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What They Found and What It Means<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kristopher M. Kusnerik at the University of Florida, Rowan Lockwood at the College of William &amp; Mary, and Amanda N. Grant at the University of Northern Arizona teamed to gather data from five sites in North Carolina, Maryland, and Virginia. They collected oyster shells from the Ice Age, the colonial era, and today. Then, they analyzed salinity and temperature from all three time periods, as well as oyster-shell height, age, and growth rates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Of particular note, they found that oysters in the Chesapeake Bay area from the Ice Age grew slower \u2014 but they also were larger and lived longer than their colonial-era or modern-day counterparts. The study also revealed that water-nutrient levels were likely lower during the Ice Age, suggesting that the increased rates of oyster growth today by comparison could result from higher nutrient levels.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Other studies have shown that traditionally undisturbed oysters at the Tangier Sound and Elizabeth River in Virginia are larger and more disease resistant. This suggests that, if given the opportunity, Chesapeake Bay oysters also could evolve disease resistance and grow larger.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kusnerik\u2019s team also concluded that although modern oysters in North Carolina\u2019s Pamlico Sound grow six to seven times faster than ancient oysters, the short life spans of both ancient and modern oysters in North Carolina resulted in little to no difference in the parameters of these populations over time. The reasons behind the differences between the Chesapeake Bay oysters and North Carolina\u2019s oysters remain unknown.<\/p>\n\n\n\n<figure class=\"wp-block-image alignwide\"><a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program.jpg\" data-fullsize=\"2550x1700\" data-zoom=\"true\"><img loading=\"lazy\" decoding=\"async\" width=\"2550\" height=\"1700\" src=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program.jpg\" alt=\"Courtesy of Will Parson, Chesapeake Bay Program, NOAA\" class=\"wp-image-13443\" srcset=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program.jpg 2550w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program-300x200.jpg 300w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program-1024x683.jpg 1024w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program-768x512.jpg 768w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program-1536x1024.jpg 1536w, https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program-2048x1365.jpg 2048w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><figcaption class=\"wp-element-caption\">Courtesy of Will Parson, Chesapeake Bay Program, NOAA<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">It&#8217;s also clear that overharvesting and disease particularly challenge mature female oysters, which, in turn, negatively affects reproduction rates and the overall oyster population.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Based on their findings, Kusnerik, Lockwood, and Grant recommend new harvesting restrictions on mature oysters. Possible solutions include decreasing the harvest total, establishing a maximum size limit, and creating oyster-specific marine protected areas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/go.ncsu.edu\/oyster-study\" target=\"_blank\" rel=\"noopener noreferrer\"><em>full study<\/em><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/go.ncsu.edu\/oyster-culture\" target=\"_blank\" rel=\"noopener noreferrer\"><em>the \u201cOyster Culture\u201d issue of <\/em>Coastwatch<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>HookLineScience.com<\/em><\/a> originally published this story.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>lead photo<\/em>: oyster sanctuary, courtesy of NC DMF<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Katelyn Vause is a contributing editor for <\/em>Coastwatch<em>. She recently graduated with a master\u2019s degree in English from NC State University.<\/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\/summer-2020\/\"\n      class=\"ncst-component__bold-link text-link\"\n                >\n    <span class=\"text\">Summer 2020 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\":643,\"subtitle\":\"Can the fossil record suggest how to protect a modern-day species?\"} \/-->\n<!-- \/wp:ncst\/dynamic-header -->\n\n<!-- wp:paragraph -->\n<p>Restored oyster reefs provide healthy habitats and great places for fishing. Ongoing threats to oysters, such as disease and harvesting, mean that unless we make deliberate efforts to restore them, we are in danger of losing the benefits that oyster reefs provide.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Oysters are a valuable seafood product, and restoration and conservation efforts have historically focused on protecting juvenile oysters. Mature oysters devote more energy to reproduction than shell growth, and they could be a valuable asset that currently receives inadequate levels of protection. Learning more about oysters of the past, which might have faced fewer challenges, could inform how we think about both juvenile and mature oysters&nbsp;when conceiving new strategies for oyster management.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:image {\"id\":13442,\"align\":\"wide\"} -->\n<figure class=\"wp-block-image alignwide\"><a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2.jpg\"><img src=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-from-a-ffder-stream-to-CB-1280_gUIu5rEeV6l2.jpg\" alt=\"Oysters from a feeder stream to the Chesapeake Bay, courtesy of NOAA\" class=\"wp-image-13442\" \/><\/a><figcaption class=\"wp-element-caption\">Oysters from a feeder stream to the Chesapeake Bay, courtesy of NOAA<\/figcaption><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:heading -->\n<h2>What They Found and What It Means<\/h2>\n<!-- \/wp:heading -->\n\n<!-- wp:paragraph -->\n<p>Kristopher M. Kusnerik at the University of Florida, Rowan Lockwood at the College of William &amp; Mary, and Amanda N. Grant at the University of Northern Arizona teamed to gather data from five sites in North Carolina, Maryland, and Virginia. They collected oyster shells from the Ice Age, the colonial era, and today. Then, they analyzed salinity and temperature from all three time periods, as well as oyster-shell height, age, and growth rates.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Of particular note, they found that oysters in the Chesapeake Bay area from the Ice Age grew slower \u2014 but they also were larger and lived longer than their colonial-era or modern-day counterparts. The study also revealed that water-nutrient levels were likely lower during the Ice Age, suggesting that the increased rates of oyster growth today by comparison could result from higher nutrient levels.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Other studies have shown that traditionally undisturbed oysters at the Tangier Sound and Elizabeth River in Virginia are larger and more disease resistant. This suggests that, if given the opportunity, Chesapeake Bay oysters also could evolve disease resistance and grow larger.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Kusnerik\u2019s team also concluded that although modern oysters in North Carolina\u2019s Pamlico Sound grow six to seven times faster than ancient oysters, the short life spans of both ancient and modern oysters in North Carolina resulted in little to no difference in the parameters of these populations over time. The reasons behind the differences between the Chesapeake Bay oysters and North Carolina\u2019s oysters remain unknown.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:image {\"id\":13443,\"align\":\"wide\"} -->\n<figure class=\"wp-block-image alignwide\"><a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program.jpg\"><img src=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/wp-content\/uploads\/sites\/13\/2020\/06\/NOAA-Photo-by-Will-ParsonChesapeake-Bay-Program.jpg\" alt=\"Courtesy of Will Parson, Chesapeake Bay Program, NOAA\" class=\"wp-image-13443\" \/><\/a><figcaption class=\"wp-element-caption\">Courtesy of Will Parson, Chesapeake Bay Program, NOAA<\/figcaption><\/figure>\n<!-- \/wp:image -->\n\n<!-- wp:paragraph -->\n<p>It's also clear that overharvesting and disease particularly challenge mature female oysters, which, in turn, negatively affects reproduction rates and the overall oyster population.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p>Based on their findings, Kusnerik, Lockwood, and Grant recommend new harvesting restrictions on mature oysters. Possible solutions include decreasing the harvest total, establishing a maximum size limit, and creating oyster-specific marine protected areas.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><a href=\"http:\/\/go.ncsu.edu\/oyster-study\" target=\"_blank\" rel=\"noopener noreferrer\"><em>full study<\/em><\/a><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><a href=\"http:\/\/go.ncsu.edu\/oyster-culture\" target=\"_blank\" rel=\"noopener noreferrer\"><em>the \u201cOyster Culture\u201d issue of <\/em>Coastwatch<\/a><\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><a href=\"https:\/\/ncseagrant.ncsu.edu\/hooklinescience\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>HookLineScience.com<\/em><\/a> originally published this story.<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>lead photo<\/em>: oyster sanctuary, courtesy of NC DMF<\/p>\n<!-- \/wp:paragraph -->\n\n<!-- wp:paragraph -->\n<p><em>Katelyn Vause is a contributing editor for <\/em>Coastwatch<em>. She recently graduated with a master\u2019s degree in English from NC State University.<\/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\/summer-2020\/\",\"text\":\"Summer 2020 Issue\"} -->\n<a href=\"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/magazine\/summer-2020\/\" 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\/summer-2020\/\"><span class=\"text\">Summer 2020 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>Restored oyster reefs provide healthy habitats and great places for fishing. Ongoing threats to oysters, such as disease and harvesting, mean that unless we make deliberate efforts to restore them, we are in danger of losing the benefits that oyster reefs provide.<\/p>\n","protected":false},"author":63,"featured_media":13441,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"views\/single-immersive.blade.php","format":"standard","meta":{"_acf_changed":false,"source":"","ncst_custom_author":"Katelyn Vause","ncst_show_custom_author":true,"ncst_dynamicHeaderBlockName":"ncst\/default-immersive-post-header","ncst_dynamicHeaderData":"{\"backgroundColor\":\"custombg_one\",\"displayCategoryID\":643,\"showAuthor\":true,\"showDate\":true,\"showFeaturedVideo\":false,\"subtitle\":\"Can the fossil record suggest how to protect a modern-day species?\"}","ncst_content_audit_freq":"","ncst_content_audit_date":"","ncst_content_audit_display":false,"ncst_backToTopFlag":"","footnotes":""},"categories":[578,599,643],"tags":[],"_ncst_magazine_issue":[658],"class_list":["post-13421","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-578","category-animals","category-summer-2020"],"displayCategory":{"term_id":643,"name":"Summer 2020","slug":"summer-2020","term_group":0,"term_taxonomy_id":644,"taxonomy":"category","description":"","parent":578,"count":11,"filter":"raw"},"acf":{"ncst_posts_meta_modified_date":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - 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