2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2018 | 9:30 AM - 9:45 AM | PATTERNS OF INVERTEBRATE DIVERSITY, BIOMASS, AND FOOD WEB STRUCTURE ACROSS A BROAD GEOGRAPHIC SCALE | 310 B
PATTERNS OF INVERTEBRATE DIVERSITY, BIOMASS, AND FOOD WEB STRUCTURE ACROSS A BROAD GEOGRAPHIC SCALE
It has been hypothesized that many abiotic and biotic attributes of streams change predictably across climate gradients because of the direct influences temperature and precipitation have on hydrology and geomorphology. Several studies have demonstrated that metabolism and nutrient cycling follow predictable patterns across biomes. Vertebrate diversity has also been shown to vary across biomes, with the highest diversity and endemism occurring in forested streams followed by grassland and then desert streams. However, patterns of diversity across biomes are not as well understood for stream invertebrates. Here, we present results from a field study that investigated patterns of invertebrate diversity and food web structure across biomes. We studied 19 wadeable streams in seven locations across the southern United States (Arizona east to Alabama). We hypothesized that invertebrate communities inhabiting desert streams with open canopies would have a heavier reliance on in situ primary production than forested streams with closed canopies. Consequently, desert streams should contain a higher proportion of grazing taxa than forested streams, which should be inhabited by a higher proportion of detritivores. Results from this study provide evidence for broad-scale patterns of stream invertebrate diversity and food web structure.
- Invertebrate
- Spatial
- Food Webs
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Presenters/Authors
Daniel Nelson
(), University of Oklahoma, daniel.nelson79@gmail.com;
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Daniel Allen
(), University of Oklahoma, dcallen@ou.edu;
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Darin Kopp
(), University of Oklahoma, darinkopp@gmail.com;
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