After a 100-year flood struck south central Oklahoma in 2015, a study of the insects, arthropods, and other invertebrates in the area revealed striking declines of most invertebrates in the local ecosystem, a result that researchers say illustrates the hidden impacts of natural disasters.
After a 100-year flood struck south central Oklahoma in 2015, a study of the insects, arthropods, and other invertebrates in the area revealed striking declines of most invertebrates in the local ecosystem, a result that researchers say illustrates the hidden impacts of natural disasters.
Researchers at the University of Oklahoma and Cameron University compared the invertebrate community before and after the flood and found a 93 percent decrease in abundance, a 60 percent decrease in species presence, and a 64 percent decrease in biomass among insects and other invertebrates nine months post-flood. They also found the differences between above-ground and below-ground invertebrates to be largely erased. Only those creatures well-adapted to recolonizing a disturbed environment were quick to return.
“I will never forget picking up the traps, and it just seemed like every trap had one cricket and one spider,” says Karl A. Roeder, a doctoral student at the University of Oklahoma (OU) and lead researcher on the study. “The area had transitioned from a diverse insect community to a large expanse of crickets and spiders. We were pretty surprised at how similar everything was.”
Roeder and colleagues Diane V. Roeder, Ph.D., assistant professor of biology at Cameron University, and Michael Kaspari, Ph.D., presidential professor of biology at OU, report their findings in a new research article published today in Environmental Entomology.
Read more at Entomological Society of America
Image: The University of Oklahoma Biological Station near Lake Texoma on the state's southern border found itself in the middle of a once-in-a-century flood in June 2015. Three months earlier, researchers there had sampled the insect and invertebrate community in the area, and later sampling found a 93 percent decrease in abundance, a 60 percent decrease in species presence, and a 64 percent decrease in biomass among insects and other invertebrates nine months post-flood. (Credit: Jeff Thrasher)
