{"id":17779,"date":"2023-03-28T12:42:44","date_gmt":"2023-03-28T16:42:44","guid":{"rendered":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/?page_id=17779"},"modified":"2024-08-12T12:09:15","modified_gmt":"2024-08-12T16:09:15","slug":"hurricanes-people-and-piping-plovers","status":"publish","type":"post","link":"https:\/\/ncseagrant.ncsu.edu\/coastwatch\/hurricanes-people-and-piping-plovers\/","title":{"rendered":"Naturalist’s Notebook: Hurricanes, People, and Piping Plovers"},"content":{"rendered":"\n\n\n\n\n

Resource mangers from North Carolina to Canada have long worked to protect the piping plover (above, as a chick), putting barriers around the birds’ nests to keep people and vehicles at a distance. Biologists estimate there are only about 8,000 piping plovers in the entire world. North Carolina\u2019s coastline represents some of the bird\u2019s favorite beach spots.<\/p>\n\n\n\n

Piping plover populations are not only influenced by human activity but also by the climatic and biological environments they encounter throughout the year. The species uses our state\u2019s beaches for breeding from spring through summer, but we don\u2019t know much about the role of this habitat for winter migrating plovers or whether protective measures for the species are effective long-term.<\/p>\n\n\n\n

COMPARING THE PLOVER TO THE OYSTERCATCHER<\/h2>\n\n\n\n
\"image:<\/a>
The research team hoped to understand the annual variation of the population of the piping plover, as compared to another beach-nesting shorebird, the American oystercatcher (here). Credit: Dan Pancamo\/ CC BY-SA 2.0.<\/figcaption><\/figure>\n\n\n\n

Virginia Tech\u2019s Eunbi Kwon and colleagues wanted to understand the annual variation of the population of the piping plover, as compared to another beach-nesting shorebird, the American oystercatcher. The two species differ in feeding habitat but share similar nesting habitat. Natural resource managers protect both species from potential human disturbances, but the extent of protection has varied throughout the years and by location.<\/p>\n\n\n\n

Using three-decades (1989\u20132017) of the National Park Service\u2019s breeding monitoring data from two national seashores in North Carolina (Hatteras and Lookout), the scientists created a model to look at potential influences on the nesting populations of both species.<\/p>\n\n\n\n

Weather-induced breeding failure often is caused by a storm event and subsequent flooding, so the scientists used rainfall as an important variable. They also examined satellite imagery to determine available nesting habitat. In addition, the National Park Service provided the research team monthly total counts of recreational visitors at each park since 1988.<\/p>\n\n\n\n

Finally, new regulations on off-road-vehicle use and beach recreation have been in place since 2006 at Lookout and 2008 at Hatteras, so the scientists could look at the populations before and after protections went into effect.<\/p>\n\n\n\n

HOW PIPING PLOVERS BEHAVE<\/h2>\n\n\n\n
\"image:<\/a>
Piping plover, courtesy of Gene Nieminen\/ FWS.<\/figcaption><\/figure>\n\n\n\n

Long-term trends showed that breeding for plovers was similar for the two parks, with a steep decline between the mid-1990s and early-2000s, followed by a recovery.<\/p>\n\n\n\n

Hatteras had five times more annual visitors than Lookout, and the team\u2019s modelling revealed: 1) a strong negative relationship between the population size of breeding plovers and human activity, and 2) a positive relationship with protection efforts aimed at reducing disturbances. Breeding and wintering climatic conditions, population productivity, and nesting habitat availability had only weak effects on population size.<\/p>\n\n\n\n

Although birds could freely move between the two national seashores, only three out of 108 banded plovers nested at both locations.<\/p>\n\n\n\n

In general, plovers from the Outer Banks wintered at lower latitudes, such as the Bahamas, compared to oystercatchers. Interestingly, none of the variables that the researchers studied could explain the annual variation in the numbers of oystercatcher breeding pairs.<\/p>\n\n\n\n

CLIMATE AND HUMAN IMPACTS<\/h2>\n\n\n\n

Critical habitat for the imperiled piping plover has been a contentious issue along the Outer Banks for years. Populations of beach-nesting shorebirds naturally fluctuate to some extent, but visitors to the beaches may affect the useable habitat for nesting shorebirds. This study\u2019s findings reinforce the value of the Cape Hatteras National Seashore to the plovers\u2019 future.<\/p>\n\n\n\n

However, the amount of nesting habitat\u2014 areas of dry sand \u2014 on barrier islands is dependent on natural processes, principally the extent of washovers from storm events. During the years that hurricanes increased the total amount of available habitat at Hatteras (2002\u20132006) there also were much fewer visitors at the park, which makes it difficult to separate the climate and human impacts.<\/p>\n\n\n\n

At a time when climate is changing, the role of random events, such as hurricanes, could more strongly shape populations of long-lived shorebird species.<\/p>\n\n\n\n

the full study<\/a><\/span><\/p>\n\n\n\n

more about climate impacts on bird populations:
\u201cWings of Change,\u201d Spring 2022 issue of Coastwatch<\/em><\/a><\/span><\/p>\n\n\n\n

Sara Mirabilio is a fisheries extension specialist with North Carolina Sea Grant and co-curator with Sea Grant\u2019s Scott Baker of the award-winning Hook, Line & Science series, which originally published this story: HookLineScience.com.<\/em><\/p>\n\n\n\n

lead photo credit: Dan Graovac\/Parker River National Wildlife Refuge.<\/em><\/p>\n\n\n

Related<\/h2>
\n Spring 2023 Issue<\/span>\n\t\t\t\n\t\t\t\n\t\t<\/svg><\/span>\n <\/a>\n <\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"

A new study looked at the long-term mating habits of piping plovers before and after protective measures went into effect.<\/p>\n","protected":false},"author":63,"featured_media":17719,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"views\/single-immersive.blade.php","format":"standard","meta":{"_acf_changed":false,"ncst_custom_author":"Sara Mirabilio","ncst_show_custom_author":true,"ncst_dynamicHeaderBlockName":"ncst\/default-immersive-post-header","ncst_dynamicHeaderData":"{\"backgroundColor\":\"custombg_one\",\"displayCategoryID\":604,\"showAuthor\":true,\"showDate\":true,\"showFeaturedVideo\":false,\"subtitle\":\"A new study looked at the long-term mating habits of piping plovers before and after protective measures went into effect.\",\"focalPoint\":{\"x\":0.5,\"y\":0.26},\"mediaID\":17719,\"titleColor\":\"custombg_one\"}","ncst_content_audit_freq":"","ncst_content_audit_date":"","ncst_content_audit_display":false,"ncst_backToTopFlag":"","footnotes":""},"categories":[581,599,1547,603,589,604],"tags":[],"_ncst_magazine_issue":[605],"class_list":["post-17779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-581","category-critters","category-healthy-ecosystems","category-hurricanes","category-naturalists-notebook","category-spring-2023"],"displayCategory":{"term_id":604,"name":"Spring 2023","slug":"spring-2023","term_group":0,"term_taxonomy_id":605,"taxonomy":"category","description":"","parent":581,"count":18,"filter":"raw"},"acf":[],"yoast_head":"\nNaturalist's Notebook: Hurricanes, People, and Piping Plovers - 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