Wildlife conservation

The construction of Abacoa included an attempt to conserve the wildlife in a Greenway, a set of habitats separated from the residential and commercial areas. All of the wetlandswith in Abacoa represent artificially constructed ponds, canals, and streams first created from 1998-2004. The present study focuses on the anuran (i.e., frog and toad) populations and looks at the number of different species that have naturally colonized six differnet sites around Abacoa. Each of these sites varies in qualities that may affect the probability of breeding in that section. The quality of water is known to be less ideal as the water flows away from the headwaters and mixes with water from other sources. This study aims to determine which anuran species are found at each of these sites after nearly a decade of colonization, and how both anuran diversity and abundance correlates with water and habitat quality.

Florida's pine flatwoods are pyrogenic ecosystems that require frequent fires to regenerate the herbaceous layer and suppress crowding vegetation. Human development has hindered these natural fires and consequently affected the herpetofauna (amphibian and reptile) species. Anthropogenic encroachment, in addition to fire suppression, has also provided ideal habitats for invasive species within native environments. Exotic species are often found in developed areas around buildings and roads, and it is likely this pattern continues into the park. This eight-month coverboard survey focuses on the effects various fires may have on herpetofauna in the area and explores the level of intrusion exotic species exhibit within the communities. Minimal differences among herpetofauna composition between transects were found. However, a convincing percentage of exotic species were found only within the first ten meters of the transects while all native species were at least 25 meters into a transect.

The effects of the recently introduced species, the curlytail lizard, on the Florida ecosystems are relatively unknown. Previous research conducted in the Bahamas showed that brown anole lizards, once introduced to curlytail lizards, became arboreal to evade the threat of the curlytail lizards. To attempt to see if such a niche shift in the brown anole population is occurring in Florida, data were collected using two areas located on the Harriet L. Wilkes Honors College of FAU. One area was inhabited by only brown anoles whereas the other area was inhabited by brown anoles and curlytail lizards, the latter which newly invaded this site in 2006. Observations were made by walking through the selected area, and counting and recording all lizards that were visible. Data were collected at specific times during the day, four times a day. After comparing the two locations, it was found that the brown anoles have become arboreal when sharing an environment with curlytail lizards.

The gopher tortoise, Gopherus polyphemus, is a threatened species native to the southeastern United States. The breeding season of G. polyphemus is reportedly from April to June. However, out of season hatchlings in Jupiter, Florida, suggest that in South Florida, the very southernmost part of the gopher tortoise's range, the warmer climate allows a longer period of reproduction or a year-round breeding season. My research sought to find evidence for an extended breeding season and to collect fecundity data on the South Florida tortoises by capturing female tortoises and X-raying them at different times of the year to check for the presence of eggs. Although I found no conclusive proof of an extended breeding season, I present additional circumstantial evidence for it, as well as information regarding the fecundity of tortoises in the spring.

The Florida Scrub-jay is the only bird endemic to the state of Florida, and is entirely restricted to pyrogenic xeric oak scrublands. The species is listed as Threatened, and all populations throughout the state are in decline. The major causes of decline are habitat modification due to development and fire suppression. Preservation and proper fire management is crucial for the continued survival of the species. The territories of three families of Florida Scrub-jays at Savannas Preserve State Park were delineated, and the area calculated using 100% MVCP analysis and compared to work previously published by Cowan (2005). The results of this study show that Savannas Preserve State Park oak scrub habitat is deteriorating, but that aggressive fire management can restore the scrub to optimal Florida Scrub-jay habitat.

The cheetah (Acinonyx jubatus) continues to be an object of intensive study with respect to its genetic heterozygosity and its drastic decline in the wild. Fluctuating asymmetry (FA) has been used to evaluate the levels of inbreeding and monomorphism in the cheetah. A measurement of craniodental FA was undertaken to compare the southern African cheetah (Acinonyx jubatus jubatus) with previously collected craniodental FA measurements from the East African cheetah (Acinonyx jubatus raineyi). Unlike their counterparts, the southern African cheetah did not show significant asymmetry. These findings suggest that fluctuating asymmetry cannot be used as a determination of genetic depletion in cheetahs.

Once seen as entertainment organizations, many American zoos now strongly promote themselves as agencies of biodiversity conservation, a reorientation prompted in part by growing public concern about endangered species. Funding, research, conservation efforts, and captive breeding programs are the concrete tools that allow zoos to lay claim to their contributions, but it is their more subtle cues that leave a lasting impression with zoo visitors. The exhibits, layout, signage, and presentations reflect prevailing attitudes about nature, wildlife, exotic species, and shape ideas about how animals live their lives and what they are like in the wild. This project examines tensions between the public presentation of conservation goals and concrete contributions to conservation. Zoos are one of the few places where the public can see firsthand many animals in an up-close environment and the impact of zoos on the future of conservation may be dependent upon resolving such tensions.