Interactions between Tree-Fall Canopy Gaps, Plant Phenology, and Frugivorous Lemurs in Masoala National Park, Madagascar
Subsequent Statement of Responsibility
Vasey, Natalie
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
Portland State University
Date of Publication, Distribution, etc.
2020
PHYSICAL DESCRIPTION
Specific Material Designation and Extent of Item
241
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
Ph.D.
Body granting the degree
Portland State University
Text preceding or following the note
2020
SUMMARY OR ABSTRACT
Text of Note
Madagascar is one of Earth's top biodiversity hotspots, with 80% of life on the island considered endemic. Among the endemic species are lemurs, a diverse group of non-human primates. Unfortunately, Madagascar's diversity, including lemurs, is threatened by habitat degradation and loss. Despite intense anthropogenic pressure over the past 50 years, scientists have not detected any lemur extinctions during this period. Some researchers have proposed that lemurs' adaptations to natural disturbances have provided these taxa resiliency against anthropogenic disturbances. Certainly, Madagascar experiences an extreme disturbance regime: the island experiences an average of over three cyclones a year. These cyclones create numerous, small disturbances in the form of tree-fall canopy gaps. Consequently, lemurs have had to adapt to both large-scale and small-scale disturbances. While some research exists on the impact of cyclones on lemur behavior, ecology, and population dynamics, very little is known about how tree-fall canopy gap disturbances affect lemurs. This research was the first to address the role canopy gaps play in the behavioral ecology of lemurs.