TitleCharacterizing invasive species
NameEarp, Colleen (author), Schneider, Laura C (chair), Rennermalm, Asa (internal member), Rudel, Thomas K (internal member), Rutgers University, Graduate School - New Brunswick,
Introduced organisms--Mexico--Sian Ka’an-Calakmul (Yucatán),
Bracken fern--Mexico--Sian Ka’an-Calakmul (Yucatán)
DescriptionInvasive species are becoming a more relevant topic due to climate change and globalization altering the landscape. Bracken fern (Pteridium aquilinum) is an invasive plant that has impacted land cover in Mesoamerican Biological Corridor region in Mexico. While much is known about its biology and presence elsewhere in the world and in some specific sections of the Southern Yucatan, greater understanding is needed concerning the extent and characteristics of the invasion in the MBC. This thesis serves as an inventory of the presence of bracken fern in the region and characterizing its relationship with land use and with fire regimes. In May and June of 2009, a total of 125 individual sites were studied through field mapping and interviews, based on the presence of bracken fern. Ancillary data including 24 previously surveyed plots in the region, land cover classifications, road networks, and MODIS fire data products were considered to gain a broader perspective of the bracken fern invasion there. Using GIS, these different datasets were considered together in effort to clarify the relationships between bracken fern and its surroundings. Overall, bracken fern is a more localized problem, but an issue for semi-subsistence farmers nonetheless. With varied spatial distribution and elevation, this plant invasion appears to be more driven by human activities such as the creation of pasturelands and agriculture. Human disturbance, especially fire regimes, reduces the biological competition and promotes permanent establishment of bracken fern, which may have implications for conservation efforts in the MBC.
NoteIncludes bibliographical references
Noteby Colleen Earp
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.