{"id":4570,"date":"2026-07-15T14:14:07","date_gmt":"2026-07-15T18:14:07","guid":{"rendered":"http:\/\/bpac.algomau.ca\/?page_id=4570"},"modified":"2026-07-15T14:14:08","modified_gmt":"2026-07-15T18:14:08","slug":"phytoplankton-and-zooplankton-populations-bui-13-canadian-status","status":"publish","type":"page","link":"http:\/\/bpac.algomau.ca\/?page_id=4570","title":{"rendered":"Phytoplankton and Zooplankton Populations (BUI #13) Canadian Status"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"768\" src=\"http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-1024x768.jpg\" alt=\"\" class=\"wp-image-3257\" srcset=\"http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-1024x768.jpg 1024w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-300x225.jpg 300w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-768x576.jpg 768w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-1536x1152.jpg 1536w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-2048x1536.jpg 2048w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-350x263.jpg 350w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-24x18.jpg 24w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-36x27.jpg 36w, http:\/\/bpac.algomau.ca\/wp-content\/uploads\/2020\/12\/IMG_20140614_181648-1-48x36.jpg 48w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2><strong>Current Status: Not Impaired<\/strong><\/h2>\n\n\n\n<p>Phytoplankton and Zooplankton Populations are considered Not Impaired on the Canadian side of the St. Marys River Area of Concern.<\/p>\n\n\n\n<p>Healthy plankton communities are an important sign of ecosystem health because they form the base of the aquatic food web and support fish, wildlife, and overall biological productivity. Assessments confirmed that these communities are functioning naturally and are comparable to those found in healthy Great Lakes environments.<\/p>\n\n\n\n<p>This finding demonstrates that the St. Marys River continues to support the ecological processes necessary for a healthy and productive aquatic ecosystem.<\/p>\n\n\n\n<h2><strong>What Is This BUI?<\/strong><\/h2>\n\n\n\n<p>Phytoplankton and zooplankton are tiny organisms that form the foundation of aquatic food webs.<\/p>\n\n\n\n<p>Phytoplankton are microscopic plants and algae that use sunlight to grow and produce oxygen. Zooplankton are small animals that feed on phytoplankton and serve as an important food source for fish and other aquatic organisms.<\/p>\n\n\n\n<p>Because these organisms respond quickly to changes in water quality, nutrient levels, and environmental conditions, they are often used as indicators of ecosystem health.<\/p>\n\n\n\n<p>This BUI evaluates whether phytoplankton and zooplankton communities have been significantly altered by pollution or environmental degradation.<\/p>\n\n\n\n<h2><strong>Why Was This BUI Evaluated?<\/strong><\/h2>\n\n\n\n<p>When the St. Marys River was designated a Great Lakes Area of Concern, scientists recognized that pollution and nutrient inputs could potentially affect plankton communities.<\/p>\n\n\n\n<p>Changes in phytoplankton and zooplankton populations can have ripple effects throughout the food web, affecting fish populations, water quality, and overall ecosystem function.<\/p>\n\n\n\n<p>To determine whether this beneficial use was impaired, researchers examined:<\/p>\n\n\n\n<ul><li>Phytoplankton and zooplankton diversity.<\/li><li>Population abundance and community composition.<\/li><li>Water quality and nutrient conditions.<\/li><li>Seasonal variations in plankton communities.<\/li><li>Comparisons with suitable reference locations outside the Area of Concern.<\/li><\/ul>\n\n\n\n<p>The goal was to determine whether environmental conditions within the St. Marys River had significantly altered the natural plankton community.<\/p>\n\n\n\n<h2><strong>What Was Found?<\/strong><\/h2>\n\n\n\n<p>The assessment found that phytoplankton and zooplankton communities within the St. Marys River were healthy and functioning as expected for a Great Lakes connecting channel.<\/p>\n\n\n\n<p>Researchers determined that:<\/p>\n\n\n\n<ul><li>Plankton communities were diverse and supported a healthy aquatic food web.<\/li><li>Species composition was similar to that found in comparable reference locations.<\/li><li>Natural factors such as water flow, seasonal conditions, and the influence of Lake Superior had a greater effect on plankton communities than pollution.<\/li><li>Nutrient levels and water quality conditions supported normal ecosystem function.<\/li><li>There was no evidence that contamination was causing degradation of plankton populations.<\/li><\/ul>\n\n\n\n<p>The findings indicated that phytoplankton and zooplankton populations were performing as expected and were not being adversely affected by conditions within the Area of Concern.<\/p>\n\n\n\n<h2><strong>Status on the Canadian Side<\/strong><\/h2>\n\n\n\n<p>On the Canadian side of the St. Marys River Area of Concern, Phytoplankton and Zooplankton Populations has never been considered impaired.<\/p>\n\n\n\n<p>Assessments concluded that:<\/p>\n\n\n\n<ul><li>Plankton communities were functioning normally.<\/li><li>Species diversity and abundance were consistent with healthy Great Lakes ecosystems.<\/li><li>No pollution-related impacts were identified.<\/li><li>Water quality conditions supported healthy aquatic food webs.<\/li><li>The criteria for impairment were not met.<\/li><\/ul>\n\n\n\n<p>Because no impairment was identified, no remedial actions were required specifically for this beneficial use.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Current Status: Not Impaired Phytoplankton and Zooplankton Populations are considered Not Impaired on the Canadian side of the St. Marys River Area of Concern. Healthy plankton communities are an important <a class=\"more-link\" href=\"http:\/\/bpac.algomau.ca\/?page_id=4570\">Continue Reading &amp;rarr;<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/pages\/4570"}],"collection":[{"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4570"}],"version-history":[{"count":1,"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/pages\/4570\/revisions"}],"predecessor-version":[{"id":4577,"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=\/wp\/v2\/pages\/4570\/revisions\/4577"}],"wp:attachment":[{"href":"http:\/\/bpac.algomau.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}