Influence of Prescribed Fire on Reproductive Ecology of Female Eastern Wild Turkey (Meleagris Gallopavo Silvestris) in West-central Louisiana


Book Description

The eastern wild turkey (Meleagris gallopavo silvestris) inhabits fire-managed, pine-dominated ecosystems of the Southeastern United States. However, the influence of fire-induced disturbance on reproductive ecology of turkeys is poorly understood. Therefore, I investigated nest site selection, nest survival, habitat selection, and behavioral response to fire by female wild turkeys in a fire-managed pine ecosystem of Louisiana. Turkeys nested in forest stands with various fire histories, but nest survival was lowest where fire was absent for [greater than or equal to] 3 years. Turkeys selected hardwood stands and avoided recently burned pine stands during winter, but selected pines burned zero and one years prior during the reproductive period. Turkeys used recently burned areas, but use peaked at 103 days post-fire before declining. Turkeys were more likely to use burned areas near the perimeter, but use of interior space increased with time-since-fire. I recommend managers in southeastern pine forests apply fire at 3-year intervals and maintain habitat diversity through retention of hardwood stands.




The Atchafalaya River Basin


Book Description

In this comprehensive, one-volume reference, Nature Conservancy scientist Bryan P. Piazza poses five key questions: —What is the Atchafalaya River Basin? —Why is it important? —How have its hydrology and natural habitats been managed? —What is its current state? —How do we ensure its survival? For more than five centuries, the Atchafalaya River Basin has captured the flow of the Mississippi River, becoming its main distributary as it reaches the Gulf of Mexico in south Louisiana. This dynamic environment, comprising almost a million acres of the lower Mississippi Alluvial Valley and Mississippi River Deltaic Plain, is perhaps best known for its expansive swamp environments dominated by baldcypress, water tupelo, and alligators. But the Atchafalaya River Basin contains a wide range of habitats and one of the highest levels of biodiversity on the North American continent. Piazza has compiled and synthesized the body of scientific knowledge for the Atchafalaya River Basin, documenting the ecological state of the basin and providing a baseline of understanding. His research provides a crucial resource for future planning. He evaluates some common themes that have emerged from the research and identifies important scientific questions that remain unexplored.










Effects of Large Scale Growing Season Prescribed Burns on Movement, Habitat Use, Productivity, and Survival of Female Wild Turkey on the White Rock Ecosystem Restoration Project of the Ozark-St. Francis National Forest


Book Description

Restoration of woodland and savanna ecosystems has become a common management strategy in the Central Hardwoods region. Over the past two decades forest managers have implemented woodland and savanna restoration at the landscape level (≥10,000 ha), especially using early growing season prescribed fire. The implementation of the restoration strategy has coincided with declines of Eastern Wild Turkey (Meleagris gallopavo silvestris) in many treated areas causing concern that early growing season prescribed fire was impacting wild turkey. We initiated our study to examine the effect of woodland and savanna restoration on the ecology and habitat of wild turkey in the Ozark Highlands. We used 67 female wild turkey fitted with 110 g Global Positioning System (GPS) Platform Transmitting Terminals between 2012 and 2013 to document nest-site selection and survival, estimate annual and seasonal home ranges, examine pre-incubation habitat use, and assess the impacts of management practices on forest structure. Nest-sites had higher visual concealment, higher slope, and more woody ground cover than non-nest-sites. We also found that wild turkey nest survival increased as the amount of visual concealment increased and survival decreased as the distance from a road increased. We documented wild turkey home ranges that were among the largest reported for the species and were larger than those documented before woodland and savanna restoration. We found wild turkey selected habitat during the pre-incubation period that was more diverse in canopy cover, in a transitional state and in small patches. Wild turkey subsequently selected habitat for nest-sites that had similar characteristics but were in larger patches. We also found that landscape level early growing season prescribed fire had not created woodland or savanna conditions across the landscape and likely would require more time (≥25 years). In conclusion wild turkey populations have not benefited from current woodland and savanna restoration. However, if restoration were having the desired outcome the impact on wild turkey population may be different. We provide a description of all variables used (Appendix I), morphometric and handling data for all captured wild turkey (Appendix II), data sets for nest-site selection (Appendix III), nest survival (Appendix IV), pre-incubation habitat selection (Appendix V), and vegetation data collected throughout the study area from 2011 to 2013 (Appendix VI).