A " Tree-ific " Coldwater Stream Food Chain Trees help begin the food chain in a stream. Leaves and woody debris provide food and nutrients for aquatic organisms. Food Chain Here is an example of how energy flows through a coldwater stream food chain. Sun Leaf 4 3 Aquatic Macroinvertebrates 1 2 1 Leaves enter stream Blacknose Dace 2 Microbes attach to leaves and soften leaves 3 Shredders break down leaves 4 Waste from shredders washes downstream Brook Trout and becomes available to other aquatic macroinvertebrates like collectors and grazers Learn more about aquatic macroinvertebrate feeding groups like shredders and collectors at www.fishandboat.com/LearningCenter/ ActivitiesAndEducationPortal/Pages/ default.aspx. 50 Pennsylvania Angler & Boater * March/April 2021 Angler www.fishandboat.comhttp://www.fishandboat.com/LearningCenter/ActivitiesAndEducationPortal/Pages/default.aspx http://www.fishandboat.com/LearningCenter/ActivitiesAndEducationPortal/Pages/default.aspx http://www.fishandboat.com/LearningCenter/ActivitiesAndEducationPortal/Pages/default.aspx http://www.fishandboat.com