| metals, parasites, and environmental conditions affecting breeding populations of spotted salamanders (ambystoma maculatum) in northern arkansas, usa. | the spotted salamander (ambystoma maculatum) is indigenous to northern arkansas, and several breeding sites are known to exist in the region. spotted salamanders (n = 17) were collected and examined for parasites and only three females harbored nematodes (physaloptera spp.). chronic aquatic bioassays were conducted using water collected from eight breeding ponds during different hydroperiod events. no lethal or sublethal effects were measured in ceriodaphnia dubia; however, decreased growth and ... | 2016 | 26886425 |
| occurrence of organic wastewater and other contaminants in cave streams in northeastern oklahoma and northwestern arkansas. | the prevalence of organic wastewater compounds in surface waters of the united states has been reported in a number of recent studies. in karstic areas, surface contaminants might be transported to groundwater and, ultimately, cave ecosystems, where they might impact resident biota. in this study, polar organic chemical integrative samplers (pociss) and semipermeable membrane devices (spmds) were deployed in six caves and two surface-water sites located within the ozark plateau of northeastern o ... | 2010 | 19763679 |