{"id":3189,"date":"2021-01-30T19:11:02","date_gmt":"2021-01-30T18:11:02","guid":{"rendered":"http:\/\/www.deltavissers.nl\/?p=3189"},"modified":"2021-01-30T19:11:03","modified_gmt":"2021-01-30T18:11:03","slug":"glasaalmonitoring-2021","status":"publish","type":"post","link":"https:\/\/www.deltavissers.nl\/index.php\/2021\/01\/30\/glasaalmonitoring-2021\/","title":{"rendered":"Glasaalmonitoring 2021"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3189\" class=\"elementor elementor-3189\">\n\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-3b7b4c2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"1128\" data-id=\"3b7b4c2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-af7edb8\" data-eae-slider=\"60607\" data-id=\"af7edb8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bec0ff7 elementor-widget elementor-widget-heading\" data-id=\"bec0ff7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Glasaalmonitoring 2021<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-2ea7fb5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"45462\" data-id=\"2ea7fb5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3fd3e6d\" data-eae-slider=\"48770\" data-id=\"3fd3e6d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6f9f4f8 elementor-widget elementor-widget-image\" data-id=\"6f9f4f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"501\" src=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Team-Strijensas-in-actie-tijdens-het-eerste-seizoen-2015-Foto-Peter-Eekelder..jpg\" class=\"attachment-full size-full wp-image-3182\" alt=\"\" srcset=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Team-Strijensas-in-actie-tijdens-het-eerste-seizoen-2015-Foto-Peter-Eekelder..jpg 750w, https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Team-Strijensas-in-actie-tijdens-het-eerste-seizoen-2015-Foto-Peter-Eekelder.-300x200.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" loading=\"eager\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-a008d4d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"59656\" data-id=\"a008d4d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-762591c\" data-eae-slider=\"10151\" data-id=\"762591c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8655af elementor-widget elementor-widget-text-editor\" data-id=\"e8655af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Glasaalmonitoring 2021<br \/>vrijwilligers gezocht voor behoud van de paling in Zeeland en Zuid-Holland<\/strong><\/p><p style=\"text-align: justify;\"><img decoding=\"async\" class=\"size-full wp-image-3186 alignleft\" src=\"http:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/RAVON_logo_blauw_rgb_150.png\" alt=\"\" width=\"250\" height=\"89\" \/>In het afgelopen voorjaar werden voor het eerst in de geschiedenis intrekkende glasalen (jonge palingen) langs de volledige Nederlandse kustlijn geteld. Rekening houdend met de coronamaatregelen trotseerden meer dan tweehonderd vrijwilligers weer en wind om de intrek van glasaal in kaart te brengen. Belangrijk werk, want deze data geven ons een goed beeld over hoe het gaat met de soort. Ook voor komend seizoen zoeken we weer gemotiveerde kruisnetvissers. Kijk eens op <a href=\"http:\/\/www.ravon.nl\/glasaal\" target=\"_blank\" rel=\"noopener\">www.ravon.nl\/glasaal<\/a>.<\/p><p style=\"text-align: justify;\"><strong>Ernstig bedreigd<\/strong><br \/>Voor de meeste mensen is het inmiddels geen verrassing meer: de Europese aal is ook in 2021 internationaal nog steeds een ernstig bedreigde diersoort. Ieder voorjaar trekken jonge, doorzichtige glasalen vanaf zee onze binnenwateren in, meestal met een piek in april. Sinds 2000 schommelt de intrek in de Noordzeeregio rond de anderhalve procent ten opzichte van de jaren 60 en 70.<\/p><p style=\"text-align: justify;\"><strong>Kruisnetten langs de hele kustlijn<\/strong><br \/>Op tientallen locaties langs de Nederlandse kust worden, in verschillende samenwerkingsverbanden, glasalen geteld met behulp van kruisnetten. De monitoring wordt voor een groot deel uitgevoerd door vrijwilligers. Dit gebeurt bij obstakels op de migratieroute, zoals gemalen en sluizen. Hiermee worden de migratieknelpunten voor glasaal en andere soorten, zoals de driedoornige stekelbaars, in beeld gebracht zodat waterbeheerders maatregelen kunnen nemen om de intrekmogelijkheden te verbeteren.<\/p><p style=\"text-align: justify;\"><strong>Belangrijke data<\/strong><br \/>Daarnaast laten de gegevens aan de hand van langjarige indexen zien hoe de intrek ervoor staat. Zo bleek uit de metingen dat 2018 de hoogste intrek van glasaal kende sinds het jaar 2000. De glasaalintrek bleek in 2019 helaas een stuk lager dan in het jaar daarvoor en 2020 laat weer een lage intrek zien, vergelijkbaar met de jaren v\u00f3\u00f3r 2018. Ook de intrek voor de gehele Noordzee laat zien dat het gehoopte voorzichtige herstel voor de Europese aal uitblijft.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-846b190 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"64655\" data-id=\"846b190\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e82d5fc\" data-eae-slider=\"95992\" data-id=\"e82d5fc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dd52088 elementor-widget elementor-widget-image\" data-id=\"dd52088\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"750\" height=\"500\" src=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Vrijwilligers-glasaal_Iwan-Hoving_Noorderkrant.jpg\" class=\"attachment-full size-full wp-image-3184\" alt=\"\" srcset=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Vrijwilligers-glasaal_Iwan-Hoving_Noorderkrant.jpg 750w, https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/Vrijwilligers-glasaal_Iwan-Hoving_Noorderkrant-300x200.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" loading=\"eager\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-ad69b27 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"92676\" data-id=\"ad69b27\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b0da0ea\" data-eae-slider=\"88056\" data-id=\"b0da0ea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-848a204 elementor-widget elementor-widget-text-editor\" data-id=\"848a204\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: justify;\"><strong>Doe mee!<br \/><\/strong>Lijkt het je leuk om je samen met anderen in te zetten voor het herstel van de aal? We hebben altijd vrijwilligers nodig, vooral op specifieke plekken. Materiaal en instructies krijg je van ons. Meer informatie over onder andere locaties vind je hier: <a href=\"http:\/\/www.ravon.nl\/glasaal\" target=\"_blank\" rel=\"noopener\">ravon.nl\/glasaal<\/a>.<\/p><p style=\"text-align: justify;\">De glasaalmonitoring vindt plaats volgens de geldende regels van het RIVM. De foto&#8217;s met daarop vrijwilligers stammen van voor de coronacrisis.<\/p><p style=\"text-align: justify;\"><strong>Locaties die wel wat extra hulp kunnen gebruiken<\/strong><br \/>In Zeeland en Zuid-Holland wordt er op 24 verschillende locaties gemonitord door vrijwilligers. Wij kunnen op alle locaties in Zeeland en Zuid-Holland nog wel wat extra hulp gebruiken, maar vooral bij:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-53ed5d2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"40427\" data-id=\"53ed5d2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8f56d2a\" data-eae-slider=\"66694\" data-id=\"8f56d2a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bed4410 elementor-widget elementor-widget-text-editor\" data-id=\"bed4410\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Zeeland:<\/strong><\/p><ul><li>Gemaal Schore<\/li><li>Gemaal Poppekinderen<\/li><li>Gemaal De Piet<\/li><li>Gemaal De Noord<\/li><li>Gemaal Loohoek<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-c02a7c1\" data-eae-slider=\"20139\" data-id=\"c02a7c1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1e6bf58 elementor-widget elementor-widget-text-editor\" data-id=\"1e6bf58\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Zuid-Holland:<\/strong><\/p><ul><li>Gemaal Battenoord<\/li><li>Gemaal Kilhaven<\/li><li>Delflandse buitensluis + Schiegemaal<\/li><li>Wateringsche sluis<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-a2f090a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"72183\" data-id=\"a2f090a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ddc0e31\" data-eae-slider=\"79066\" data-id=\"ddc0e31\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5db2008 elementor-widget elementor-widget-text-editor\" data-id=\"5db2008\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: justify;\"><strong>Monitoring met vrijwilligers essentieel<br \/><\/strong>Naast het inzichtelijk maken van hoe het gaat met de intrek van glasaal, hebben de inspanningen van de vrijwilligers ook geleid tot concrete maatregelen. Zo legde Waterschap Scheldestromen vorig jaar een nieuwe vispassage aan bij Gemaal de Noord op Tholen.<\/p><p style=\"text-align: justify;\">Daarnaast werd een aantal reeds aangelegde vispassages onderzocht op effici\u00ebntie, waarna verbeteringen werden doorgevoerd, zoals bij gemaal Schoute in Scheveningen. De grote bijdrage die de vrijwilligers leveren aan het aalonderzoek bleef niet onopgemerkt: de vrijwilligers ontvingen in juni 2019 een internationale onderscheiding.<\/p><p style=\"text-align: justify;\">In 2020 hebben de vrijwilligers van de glasaalmonitoring tijdens de coronacrisis laten zien hoe gedreven ze zijn om bij te dragen aan het herstel van de paling en ging de monitoring, met inachtneming van de richtlijnen van het RIVM, onverminderd door!<\/p><p style=\"text-align: justify;\"><strong>Samenwerking<\/strong><br \/>In Zeeland en Zuid-Holland wordt de monitoring van Samen voor de Aal mogelijk gemaakt door een samenwerking tussen Waterschap Scheldestromen, Hoogheemraadschap van Delfland, Waterschap Hollandse Delta, Rijkswaterstaat Zee en Delta, Rijkswaterstaat West-Nederland Zuid, Provincie Zeeland, Provincie Zuid-Holland en RAVON.<\/p><p style=\"text-align: justify;\"><strong>Steun<img decoding=\"async\" class=\"size-full wp-image-3187 alignright\" src=\"http:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/LOGO-NPL.jpg\" alt=\"\" width=\"150\" height=\"98\" \/><br \/><\/strong>De kruisnetmonitoring langs de Nederlandse kust wordt mede mogelijk gemaakt door een bijdrage van de Nationale Postcode Loterij.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-fdc98df elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"97730\" data-id=\"fdc98df\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b2ddc22\" data-eae-slider=\"41937\" data-id=\"b2ddc22\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6cc37d6 elementor-widget elementor-widget-image\" data-id=\"6cc37d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/www.deltavissers.nl\/pdf\/glasaalmonitoring_flyer.pdf\" target=\"_blank\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"750\" height=\"513\" src=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/glasaalmonitoring_flyer.jpg\" class=\"attachment-full size-full wp-image-3197\" alt=\"\" srcset=\"https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/glasaalmonitoring_flyer.jpg 750w, https:\/\/www.deltavissers.nl\/wp-content\/uploads\/2021\/01\/glasaalmonitoring_flyer-300x205.jpg 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" loading=\"eager\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-04a04cc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-eae-slider=\"47509\" data-id=\"04a04cc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-49d4a09\" data-eae-slider=\"76433\" data-id=\"49d4a09\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5f13c30 elementor-widget-divider--view-line elementor-widget 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werden&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":3183,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,3],"tags":[147,91,146,93],"class_list":["post-3189","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actueel","category-belangenbehartiging","tag-beheer","tag-glasaal","tag-monitoring","tag-telling"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Glasaalmonitoring 2021 - Deltavissers Digitaal<\/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:\/\/www.deltavissers.nl\/index.php\/2021\/01\/30\/glasaalmonitoring-2021\/\" \/>\n<meta property=\"og:locale\" content=\"nl_BE\" \/>\n<meta property=\"og:type\" content=\"article\" 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