BIO 3117 Lecture Notes - Lecture 13: Native Plant, Species Richness, Impervious Surface
20 Mar 2018
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Lecture 13 - biodiversity in urban ponds guest speaker. Now mandatory for urbanization, will see an increase. Constructed wetland systems to detain runoff in high precipitation. Could swp provide for a diversity in species. Use a biological indicator of odonata (damselflies and dragonflies) Compared using benthic macroinvertebrate and adult dragonflies as indicators. Dragonflies are active disperser --> can move if there is a change in environment, less lag effect --> better bioindicators. Species assemblages algae large enough for ecological assessments. Feeding, emergence, breeding, thermoregulation, oviposition, shelter, predator prey. Effected by lots of variables, those variables effected by run off. Need different land covers not just pond, need forests, fields, etc. Criteria for selection eg away from lakes and rivers for no overlap, need to hole permanent body of water. Observed plant communities, water samples, gis for landscape land cover, habitat connectivity. Urban --> high inputs of energy, not self-sustained. Ponds are built so we know the age.
