Michael D. Kaller

Diel Differences in Electrofishing Catch in the Atchafalaya River Basin, Louisiana

SEAFWA Journal Volume 4, March 2017

Published reports indicate night electrofishing may be superior to day sampling to estimate density and diversity of collected shes in some aquatic habitats. However, because shallow, highly turbid waters characteristic of river floodplains present fish detection, navigation, and safety concerns during night electrofishing, many southeastern floodplain sampling programs have focused on day electrofishing. We used paired day and night samples of shes collected by transect (200 m distance for eight minutes) and point electro fishing (1 minute at four points spaced 25 m apart) to assess...


Contrasts of Waterfowl Hunter Surveys: Open Web and Random Mail Surveys Produce Similar Policy Results

We conducted random mail and open web surveys of Louisiana waterfowl hunters following the 2011-2012 season, asking identical questions about waterfowl hunting effort, success, satisfaction, proposed regulatory actions, and demographics. We received 1,096 usable responses to our mail survey, and 1,286 usable responses to an on-line survey that was open for anyone to answer. Respondents to the web survey hunted much more, harvested more ducks, and were somewhat younger; but we noted similarities across survey methods in attitudes toward proposed regulatory actions. Using five variables...


Effects of Feral Swine on Water Quality in a Coastal Bottomland Stream

Feral swine (Sus scrofa) are abundant throughout the southern United States with a complex legal status and a reputation for negative interactions with wildlife and vegetation. The impacts of feral swine upon water quality are not extensively nor quantitatively documented in the published literature. We quantified the effects of feral swine on dissolved oxygen, fecal coliform bacteria, overall heterotrophic bacteria plate counts, and the presence of disease-causing bacteria. We sampled Mill Creek in western Louisiana in summer 2002 and spring 2003. Feral swine increased fecal coliform...


Experimental Determination of Benthic Macroinvertebrate Metric Sensitivity to Fine Sediment in Appalachian Streams

Many fisheries management agencies incorporate benthic macroinvertebrate metrics in stream assessment, yet concern exists over regional variability in metric sensitivity and the reproducibility of results over time. Two field experiments were conducted in Mullenax Run, Pocahontas County, West Virginia during summers 1999 and 2000 to investigate the sensitivity of benthic macroinvertebrate metrics to fine sediment and annual variation. Substrate composition of fine sediment (< 2mm) was manipulated from 0%-40% in 10% increments in 0.3-m2 circular trays arrayed in 2 sections of the study...