{"id":170,"date":"2014-04-16T21:03:57","date_gmt":"2014-04-17T01:03:57","guid":{"rendered":"http:\/\/blogs.nd.edu\/bios21202\/?page_id=170"},"modified":"2014-04-16T23:21:38","modified_gmt":"2014-04-17T03:21:38","slug":"pollution-tolerance-index","status":"publish","type":"page","link":"https:\/\/sites.nd.edu\/bios21202\/macroinvertbrates\/pollution-tolerance-index\/","title":{"rendered":"Pollution Tolerance Index"},"content":{"rendered":"<div>\n<p><strong>Macroinvertebrates have different levels of tolerance for low water quality.<\/strong><\/p>\n<\/div>\n<div>\n<p>Certain taxa or groups of organisms are known to be more or less tolerant of polluted conditions of a stream. The presence or absence of these organisms can be used to evaluate the level of pollution or human disturbance of a stream. \u00a0\u00a0The analysis breaks stream invertebrates into 4 groups, and the presence or absence of these organisms is can be used to calculation a &#8220;Pollution Tolerance Index&#8221; for a stream.<\/p>\n<p>Click on each link below to read more about specific members of each group:<\/p>\n<ul>\n<li>\u00a0<a href=\"http:\/\/sites.nd.edu\/bios21202\/files\/2014\/04\/Group-1-invertebrates.pdf\">Group 1 invertebrates<\/a>\u00a0&#8211; Intolerant of pollution (i.e. you would not likely find these organisms in a low quality habitat)<\/li>\n<li><a href=\"http:\/\/sites.nd.edu\/bios21202\/files\/2014\/04\/Group-2-Invertebrates.pdf\">Group 2 Invertebrates<\/a>\u00a0&#8211;\u00a0\u00a0Moderately intolerant<\/li>\n<li><a href=\"http:\/\/sites.nd.edu\/bios21202\/files\/2014\/04\/Group-3-Invertebrates-.pdf\">Group 3 Invertebrates<\/a>\u00a0&#8211;\u00a0\u00a0Fairly tolerant<\/li>\n<li><a href=\"http:\/\/sites.nd.edu\/bios21202\/files\/2014\/04\/Group-4-Invertebrates.pdf\">Group 4 Invertebrates<\/a>\u00a0\u00a0Very tolerant (i.e. could survive in streams even with high levels of pollution and low quality habitat)<\/li>\n<\/ul>\n<\/div>\n<div>\n<p><strong>Concept Check Question:\u00a0<\/strong><\/p>\n<div title=\"Page 3\">\n<div title=\"Page 4\">\n<div>\n<div>\n<p>Which of the following statements about the pollution tolerance ratings is TRUE?<\/p>\n<\/div>\n<\/div>\n<div>\n<div>\n<p>A. All invertebrates have the same ability to survive in polluted conditions.<\/p>\n<p>B. Stoneflies and mayflies are examples of organisms that would be found in a high quality stream.<\/p>\n<\/div>\n<\/div>\n<div>\n<p>C. Midges, black fly larvae and planaria are\u00a0<span style=\"line-height: 1.5em\">all organisms that could only survive in a high quality stream.\u00a0<\/span><span style=\"line-height: 1.5em\"><br \/>\n<\/span><\/p>\n<\/div>\n<div>\n<div>\n<p>D. Sowbugs and scuds are insects that you might find in a very polluted stream.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Macroinvertebrates have different levels of tolerance for low water quality. Certain taxa or groups of organisms are known to be more or less tolerant of polluted conditions of a stream. The presence or absence of these organisms can be used to evaluate the level of pollution or human disturbance of a stream. \u00a0\u00a0The analysis breaks [&hellip;]<\/p>\n","protected":false},"author":1142,"featured_media":0,"parent":12,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-170","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/pages\/170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/users\/1142"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/comments?post=170"}],"version-history":[{"count":6,"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/pages\/170\/revisions"}],"predecessor-version":[{"id":192,"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/pages\/170\/revisions\/192"}],"up":[{"embeddable":true,"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/pages\/12"}],"wp:attachment":[{"href":"https:\/\/sites.nd.edu\/bios21202\/wp-json\/wp\/v2\/media?parent=170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}