{"id":3590,"date":"2019-03-14T17:39:31","date_gmt":"2019-03-14T17:39:31","guid":{"rendered":"http:\/\/ciresblogs.colorado.edu\/prometheus\/?p=3590"},"modified":"2019-03-14T17:39:32","modified_gmt":"2019-03-14T17:39:32","slug":"broadly-inflicted-stressors-can-cause-ecosystem-thinning","status":"publish","type":"post","link":"https:\/\/ciresblogs.colorado.edu\/prometheus\/2019\/03\/14\/broadly-inflicted-stressors-can-cause-ecosystem-thinning\/","title":{"rendered":"Broadly Inflicted Stressors Can Cause Ecosystem Thinning"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"660\" height=\"300\" src=\"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-content\/uploads\/sites\/36\/2019\/03\/ecosystem1.jpg\" alt=\"\" class=\"wp-image-3591\" srcset=\"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-content\/uploads\/sites\/36\/2019\/03\/ecosystem1.jpg 660w, https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-content\/uploads\/sites\/36\/2019\/03\/ecosystem1-300x136.jpg 300w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/figure>\n\n\n\n<p>by Matthew G. Burgess, Alexa\u00a0Fredston-Hermann, David\u00a0Tilman, Michel\u00a0Loreau, and Steven\u00a0D.\u00a0Gaines<\/p>\n\n\n\n<p><em><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s12080-019-0417-4\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Theoretical Ecology (opens in a new tab)\">Theoretical Ecology<\/a><\/em>,\u00a02019<\/p>\n\n\n\n<p>Abstract: Many anthropogenic stressors broadly inflict mortality or reduce fecundity, including habitat destruction, pollution, climate change, invasive species, and multispecies harvesting. Here, we show\u2014in four analytical models of interspecies competition\u2014that broadly inflicted stressors disproportionately cause competitive exclusions within groups of ecologically similar species. As a result, we predict that ecosystems become progressively\u00a0<em>thinner<\/em>\u2014that is, they have progressively less functional redundancy\u2014as broadly inflicted stressors become progressively more intense. This may negatively affect the temporal stability of ecosystem functions, but it also buffers ecosystem productivity against stress by favoring species less sensitive to the stressors. Our main result follows from the weak limiting similarity principle: species with more similar ecological niches compete more strongly, and their coexistence can be upset by smaller perturbations. We show that stressors can cause indirect competitive exclusions at much lower stressor intensity than needed to directly cause species extinction, consistent with the finding of empirical studies that species interactions are often the proximal drivers of local extinctions. The excluded species are more sensitive to the stressor relative to their ecologically similar competitors. Moreover, broadly inflicted stressors may cause hydra effects\u2014where higher stressor intensity results in higher abundance for a species with lower sensitivity to the stressor than its competitors. Correlations between stressor impacts and ecological niches reduce the potential for indirect competitive exclusions, but they consequently also reduce the buffering effect of ecosystem thinning on ecosystem productivity. Our findings suggest that ecosystems experiencing stress may continue to provision ecosystem services but lose functional redundancy and stability. <a href=\"http:\/\/sciencepolicy.colorado.edu\/admin\/publication_files\/2019.02.pdf\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Read more ... (opens in a new tab)\">Read more &#8230;<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>by Matthew G. Burgess, Alexa\u00a0Fredston-Hermann, David\u00a0Tilman, Michel\u00a0Loreau, and Steven\u00a0D.\u00a0Gaines Theoretical Ecology,\u00a02019 Abstract: Many anthropogenic stressors broadly inflict mortality or reduce fecundity, including habitat destruction, pollution, climate change, invasive species, and multispecies harvesting. Here, we show\u2014in four analytical models of interspecies &hellip; <a href=\"https:\/\/ciresblogs.colorado.edu\/prometheus\/2019\/03\/14\/broadly-inflicted-stressors-can-cause-ecosystem-thinning\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":32,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-3590","post","type-post","status-publish","format-standard","hentry","category-publications"],"jetpack_featured_media_url":"","publishpress_future_action":{"enabled":false,"date":"2026-07-04 18:54:58","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category"},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/posts\/3590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/comments?post=3590"}],"version-history":[{"count":1,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/posts\/3590\/revisions"}],"predecessor-version":[{"id":3592,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/posts\/3590\/revisions\/3592"}],"wp:attachment":[{"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/media?parent=3590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/categories?post=3590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ciresblogs.colorado.edu\/prometheus\/wp-json\/wp\/v2\/tags?post=3590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}