Journal of the Southeastern Association of Fish and Wildlife Agencies
The Journal of the Southeastern Association of Fish and Wildlife Agencies (ISSN 2330-5142) presents papers that cover all aspects of the management and conservation of inland, estuarine, and marine fisheries and wildlife. It aims to provide a forum where fisheries and wildlife managers can find innovative solutions to the problems facing our natural resources in the 21st century. The Journal welcomes manuscripts that cover scientific studies, case studies, and review articles on a wide range of topics of interest and use to fish and wildlife managers, with an emphasis on the southeastern United States.
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We tested an a priori plant community classification model, developed using topographic characteristics and GIS, to determine if it could be used to predict the distribution of the endangered Carolina northern flying squirrel (Glaucomys sabrinus coloratus) in the Balsam Mountains of western North Carolina. Nest boxes were used to sample northern flying squirrel populations in areas of predicted presence versus areas of predicted absence. There was no difference between the two site types for presence or absence of northern flying squirrels. However, significant differences were found for number of squirrels captured and nest boxes used between types. The mixed results of our analyses suggested that our definition of predicted present and predicted absent sites was flawed.
Effects of Thinning and Herbicide Application on Vertebrate Communities in Longleaf Pine Plantations
Currently, nearly 98% of the land area once dominated by longleaf pine ecosystems has been converted to other uses. The U.S. Forest Service is replanting logged areas with longleaf pine at the Savannah River Site, New Ellenton, South Carolina, in an effort to restore these ecosystems. To ascertain the effects of various silvicultural management techniques on the vertebrate communities, we surveyed small mammal, herpetofaunal, and avian communities in six 10- to 13-year-old longleaf pine plantations subjected to various thinning and herbicide regimes. Areas within each plantation were randomly assigned one of four treatments: thinning, herbicide spraying, thinning and herbicide, and an untreated control. For all vertebrate groups, abundance and species diversity tended to be less in the controls than treated areas. Birds and small mammals were most abundant and diverse in thinned treatments versus spray only and control.
Area searches and pitfall trap methods are commonly used to quantify presence or abundance of reptile and amphibian species. However, most studies do not use both methods simultaneously. We compared these methods with respect to detectability of herpetofauna species and detection rates for individual species on public lands in east central Mississippi. We conducted area searches along 300 m2 belt transects measuring 50 x 6 m at distances of 0, 25, 50, 75, and 100 m from first and second order streams. Pitfall traps were placed along transects at 0, 50, and 100 m from streams. Transects were checked 2-3 times/year in 2001 and 2002. Transect data encompassed 84 surveys over 21 study sites. Twenty-four reptile species (741 individuals) and 17 amphibian species (615 individuals) were recorded during transect surveys. Nine reptile species (135 individuals) and 10 amphibian species (315 individuals) were captured using pitfall traps.
Using questionnaires, we surveyed fifth grade students in eastern Texas during spring 1998 to evaluate their knowledge of and attitudes towards wildlife. We grouped data from 1315 completed surveys by community size (urban, semi-urban, semi-rural, and rural) and ethnicity (black, Hispanic, and white). We compared knowledge and attitude scores among groups using Kruskal-Wallis tests and evaluated relationships between knowledge or activities and attitudes using Pearson's correlations. We found that television was the primary source of wildlife information for the students; parents generally ranked lowest. White students had higher (P < 0.05) knowledge and attitude scores than Hispanics, which were higher (P < 0.05) than blacks. Rural white students had the highest scores (P < 0.05) among community sizes. For each ethnic group and community size, correlations between knowledge and attitudes were significant (P < 0.05).
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 counts (P = 0.03 in 2002 and P ? 0.01 in 2003) and heterotrophic plate counts (P ? 0.01 in 2003). Fecal coliform counts (r2 =0.25, P = 0.01 in 2002, r2 = 0.30, P ? 0.01 in 2003) and heterotrophic plate counts (r2 = 0.44, P = 0.02 in 2003) were positively related to swine presence. We also identified pathogenic bacteria, Aeromonas spp., Staphylococcus aureus, and Shigella spp., in swine impacted water.
Black bear (Ursus americanus) conservation and restoration in the southeastern United States have become conservation priorities in the past decade. The release of black bears into portions of their former range has been proposed in some states and initiated in others to re-colonize available habitats. To coincide with restoration of the federally threatened Louisiana black bear (U. a. luteolus) to public lands, we conducted hunter surveys (N = 518) at release sites and proposed release sites. Although public meetings were held with the region where bear restoration was proposed, < 60% of hunters were familiar with the plan to restore black bears to the areas they were using. However, approval of bear restoration was high (> 80%). Word-of-mouth was an effective way of disseminating information about the project, but there is concern about the trustworthiness of information the public receives.
Increased interactions among humans and black bears (Ursus americanus) are spurring increased concerns over property damage and human safety. These concerns become more apparent with habitat loss and fragmentation, particularly in relation to urban situations. To better understand the behavior and ecology of nuisance and non-nuisance black bears, the West Virginia Division of Natural Resources (WVDNR) captured 152 (127 males, 25 females) nuisance and 118 (61 males, 57 females) non-nuisance individuals from 1996 to 2002. Sample sizes for each analysis were lower due to missing or incomplete data. Initial age of capture was greater for nuisance (N = 104, ¯x = 4.04 yr, SD = 2.64) than non-nuisance (N = 52, ¯x = 3.29 yr, SD = 2.75) bears (P = 0.003). Mean litter size was similar for nuisance (N = 15, ¯x = 3.0 cubs, SD = 1.09) and non-nuisance (N = 17, ¯x = 2.65 cubs, SD = 0.88) female bears (P = 0.309).
Understanding the responses of white-tailed deer (Odocoileus virginianus) to controlled dog hunting can aid in the effective implementation of canine-assisted population management strategies. We examined the 24-h diel movements of 13 radio-collared female deer exposed to dog hunting on the Savannah River Site (SRS) near Aiken, South Carolina, where regulated dog hunting has occurred since 1965. We compared diel home range size, rate of travel, and distance between extreme diel locations before, during, and after hunts from 14 September-14 December 2002. Diel home range size (F2,91 = 7.71, P < 0.001) and distance between extreme diel locations (F2,91 = 6.78, P = 0.002) on hunt day were greater than 10-day pre- and post-hunt periods. There was no difference between pre-and post-hunt diel home range size (F2,91 = 7.71, P = 0.999) and distance between extreme diel locations (F2,91 = 6.78, P = 0.704).
Information on survival rates and causes of mortality are important to understanding white-tailed deer (Odocoileus virginianus) population dynamics and implementing appropriate management practices. We examined sex- and age-specific survival rates for three Missouri white-tailed deer populations that represented agricultural, forest, and urban landscapes. Except for males on Woods Farm (forest site), we observed no differences in age-specific or annual survival for male or female deer .6 months of age. For this exception, greater yearling than adult survival was attributed to deer harvest strategies that emphasized harvest of adult males. On the two rural study sites, hunting-related mortality accounted for 66% and 61% of female mortalities and 82% and 97% of male mortality.
Due to increased deer/vehicle collisions involving endangered Florida Key deer (Odocoileus virginianus clavium), the Florida Department of Transportation (FDOT) planned to fence a stretch of U.S. Highway 1 that crosses Big Pine Key, Florida. Public access roads, which would allow deer to enter the fenced portion of the highway, posed public and wildlife-related hazards. Currently there are no structures (deer guards) that are effective in preventing deer from entering access roads. Our purpose was to design, construct, and test a deer guard that would allow normal passage of vehicles while preventing Key deer from crossing. Between September 1998 and December 1999, we constructed and tested deer-guard prototypes within a deer-holding facility at the Welder Wildlife Foundation Refuge near Sinton, Texas. Wild-trapped Texas white-tailed deer (O. v. texanus) were used as test animals.
While national boating accident statistics readily identify the abuse of alcoholic beverages as a contributing factor in a large number of our nation's boating accidents, the challenges of formulating and implementing effective methods of reducing the abuse of alcoholic beverages on our nation's waterways are often overwhelming. One challenge hinges on the fact that the consumption of alcoholic beverages while boating meets with both legal and societal approval. Another is due primarily to our society's perception of what the stereotypical “drunk” person looks, smells, and acts like.
In June 2002, investigators of the Florida Fish and Wildlife Conservation Commission confirmed a black market distributor of illegally obtained and protected wildlife species in South Florida. The suspect operated a black market taxidermist business in which he received money to mount the illegally obtained wildlife. Some of the animals were then sold to other customers in South Florida. A covert investigator infiltrated this enterprise called Taxidermy by Fried and identified the suppliers of the wildlife. The investigator became so trusted by the suspect that he accompanied the suspect on an illegal alligator hunt in South Florida. After four months of investigation, the take down phase of Taxidermy by Fried yielded arrests of seven suspects on 26 charges: 14 felonies and 12 misdemeanors. Intelligence gathered after interviewing showed this market had dealt in illegal saltwater fish, alligators, protected birds, illegal deer, and black bear.
Beginning in 1994 with a mandatory hunter education program, Alabama's Division of Wildlife and Freshwater Fisheries has continued to introduce, almost yearly, new outreach programs in both hunter and conservation education. Alabama Conservation Enforcement Officers (CEOs) are often required to participate in these programs. Some law enforcement personnel feel that the outreach programs take up a relatively large percentage of a CEO's time and have a detrimental effect on enforcement efforts. Surprisingly, this study shows that a CEO spends just over 5% of his time with outreach programs and much of this is before the opening of hunting seasons. In addition, enforcement data seems to be correlated with number of law enforcement officers on the job rather than time spent working on outreach programs.
The Oklahoma Department of Wildlife Conservation (ODWC) has become increasingly concerned about stagnant or declining fishing license sales and a 50% turnover rate among annual fishing license holders. Marketing campaigns were initiated in Oklahoma in an attempt to reverse the trend. During 2001, ODWC partnered with the Recreational Boating and Fishing Foundation (RBFF) to test the effect of supplementing the RBFF national campaign with local marketing efforts. Local fishing directories were produced, RBFF advertising images and messages were customized for advertising, and both were directed at two local test markets of anglers with a sporadic license buying history. The pre- and post-test evaluation revealed that the campaign was successful at increasing awareness of fishing and boating as recreational activities and that direct mail was the most effective delivery mechanism for campaign messages.
We evaluated the accomplishments of the past 50 years of the Southern Division American Fisheries Society (SDAFS). We used minutes from the Southern Division annual meetings and various records to view past issues addressed by the division and activities of the SDAFS technical committees and chapters, and the evolution of the SDAFS annual meeting. Since its formation in 1952, the SDAFS has grown to about 2,000 members with 8 active technical committees, 20 chapters, and 8 student units. Issues addressed by the SDAFS have included a diversity of conservation and management issues including support for some concepts that would likely not be popular today such as intentional introduction of exotic fishes and proposing the sale of game fishes. The technical committees were the primary source of interstate coordination within the SDAFS with work including large-scale field projects, published symposia, and many compilations of data and reports.
Radio telemetry was used to determine home ranges of 38 largemouth bass (Micropterus salmoides) from the tidal upper Chesapeake Bay in Maryland. Bass from opposite shores (Susquehanna = west, Northeast = east) were tagged from 1991-1993 and tracked for 4-15 months (1991-1995) depending on battery life. Mean home range of Susquehanna bass (246 ha, N = 16) was larger than non-migratory Northeast bass (119 ha, N = 18) but the difference was not significant. Mean home range (2140 ha) of 4 migratory Northeast bass that made an annual spawning migration across the Bay was significantly different than the mean home ranges for the Northeast, Susquehanna, and pooled groups (178 ha). Mean home range for all groups (119-2140 ha) was much higher than home range sizes reported in the literature for freshwater lakes and impoundments (0.01-21 ha).
One hundred and seventy-six trophy-size (?3.6 kg) largemouth bass (Micropterus salmoides), entered into a privately-sponsored catch-and-release program at Caddo Lake, Texas/Louisiana, were tagged and monitored to assess angler recapture rates, genetic composition, and their distribution within the lake. All largemouth bass program entries were scanned for tags to determine angler recapture rates over a 4-year period. Blood samples were obtained from initial entries and used to determine genetic composition using random amplified polymorphic DNA testing. Genetic data were used to evaluate the success of past stocking activities. Angler-reported catch locations were used to examine temporal and spatial distribution of initial and recaptured largemouth bass entries. Most (77.2%) of the largemouth bass entries were caught during March (46.9%) and April (30.3%). Twenty-three (13.1%) of the 176 largemouth bass were recaptured at least once and 4 (2.3%) were recaptured twice.
We conducted 2 short-term experiments to address Floy anchor tag (model FD-68B) retention in stream-dwelling smallmouth bass (Micropterus dolomieu) over 3 to 4 months. One experiment used stream-dwelling smallmouth bass held in an experimental pond, and the other was conducted on smallmouth bass in a northeastern Oklahoma stream. Tag retention in the pond over a period of 3 months was 100%, while tag retention in the field was 76% through 1.5 months and dropped to 48% through 4 months. Mean lengths were similar between smallmouth bass that lost and retained tags at both time periods. Increased structural complexity of the stream environment or density related problems caused by low water conditions may have contributed to lower tag retention in stream-dwelling smallmouth bass. Estimating tag retention in a pond environment may overestimate actual tag retention by stream-dwelling smallmouth bass and should be used with caution.
We compared catfish catch per unit effort (CPUE), species composition, and size distribution data collected by a Smith-Root 7.5 GPP boat-mounted electrofishing unit, a Smith-Root 7.5 GPP boat-mounted electrofishing unit used in conjunction with the Smith-Root “Catfish Zapper,” and with the micro-electronic device known as the “Skoal Box.” A combined 1,175 catfish were collected from 6 sites within the Cape Fear and Lumber rivers in the summers of 2000 and 2001. The Smith-Root 7.5 GPP (GPP) collected 549 catfish (46.7%) during the 2-year period while the Smith-Root 7.5 GPP used with the Catfish Zapper (GPP and Zapper) collected 466 catfish (39.7%). The Skoal Box collected 160 catfish (13.6%). ANOVA revealed no significant difference (P = 0.88) in catch rates of the GPP and the GPP and Zapper. However, the Skoal Box captured significantly fewer catfish compared to the GPP (P = 0.02) and to the GPP and Zapper (P = 0.03).
Migratory stocks of river herring, alewife (Alosa pseudoharengus) and blueback herring (A. aestivalis) have declined as a result of overfishing, poor water quality, and loss of spawning and nursery habitat. To provide access to previously blocked spawning and nursery areas, fish passage facilities have been installed at stream blockages. In 1997, a fish ladder was installed on Unicorn Lake, a tributary of the Chester River in Maryland. In 1998 and 1999, we evaluated the effectiveness of the fish ladder for passing adult river herring and surveyed the upstream habitat for juvenile recruitment. In 1998, 18 alewife and 3,800 blueback herring used the fishway. Temporary modifications made to the fishway in 1999 substantially increased passage to 1,270 alewife and 13,400 blueback herring when densities below the dam appeared to be similar between years. Besides using the fishway, an additional 3,375 alewife were manually passed into Unicorn Lake 1999.
Sub-adult channel catfish (Ictalurus punctatus) were marked with fin clips and stocked into 5 Virginia small (13- to 65-ha) impoundments from 1993-1996 to determine optimum stocking size and population dynamics. Four years of treatment stockings were compared to 4 years of standard (fingerling) stockings using gill net and creel surveys. Gill net catch per unit effort (CPUE) was higher (P = 0.04) during the treatment phase, and percentage of marked fish within populations steadily increased and reached a high of 91% in 1997. No evidence of natural reproduction was observed. Overall, abundance and stocking size were directly related (r2 = 0.57, P = 0.01), but there was no significant difference among the 4 treatment cohorts, suggesting that catfish 254-315 mm total length were equally abundant the year following stocking. Harvest was higher (P = 0.05) during and immediately following treatment stockings. Total annual mortality (A) based on cohort analysis ranged from 34%-51%.
Phase I striped bass hauled in varying levels of sodium chloride (NaCl) had significantly higher survival than fish hauled in varying levels of calcium chloride (CaCl2), regardless if the fish came from a hard water or soft water hatchery. The addition of MS-222 to the transport water did not have a beneficial effect on phase I striped bass survival.
Smith Mountain Lake is a 8,337-ha reservoir formed by the Roanoke and Blackwater Rivers in Virginia. This lake maintains suitable habitat for striped bass (Morone saxatilis) but does not contain adequate spawning habitat for natural reproduction. Consequently, it requires annual stockings of this species to maintain the fishery. We examined how recruitment of striped bass to age-1 was affected by increasing the number of stocking locations at Smith Mountain Lake. Prior to 1996, striped bass were stocked at 2 sites. Four sites were stocked in 1996-1997 and 10 to 14 sites were stocked from 1998-2000. Approximately 118,000-170,000 striped bass were stocked at each site prior to 1996 but the number of striped bass stocked at each site in 1996-2000 was reduced to 17,000-78,000. Some of the new stocking sites were in areas of the lake that had greater nutrient concentrations and prey densities. Reduced stocking densities at each site increased recruitment to age-1.