Seminar: Orou Gaoue

View Calendar
February 15, 2021 11:30 am - 12:30 pm

The ecological consequences of overharvesting forest resources in the tropics

Conservation biology, as a mission-oriented and crisis driven discipline, has long been concerned by the causes and socio-ecological consequences of resource overexploitation. Harvesting wild plants for non-timber forest products (NTFP) serves as a valuable source of food and medicine for local communities, and potentially contributes to poverty alleviation. However, frequent harvest at high intensity can lead to plant population decline, and jeopardize the ability of future generations to benefit from these ecosystem services. In this talk, I will discuss two emerging issues on resource overexploitation that warrant more discussion in the field of conservation biology. I will first discuss the role of individual plant level heterogeneity and temporally dynamics harvest sequence on population resilience to harvest and the implications for sustainable forest products harvest. Second, I will discuss how combined lethal (timber) and non-lethal (NTFP) harvest of forest resources may be possible in tropical ecosystems. Finally, I will discuss how an in-depth understanding of indigenous people’s behavior and their ecological knowledge of their environment can be used to ask more applied questions, develop more realistic models to answer these questions and suggest culturally appropriate and ecologically sounds sustainable management systems.

Related upcoming events

  • October 3, 2022 11:30 am - October 3, 2022 12:30 pm

    Methane Plume Mapping Over Offshore Oil and Natural Gas Platforms in the Gulf of Mexico

    Alana Ayasse

    Research Scientist

    Carbon Mapper

    University of Arizona

    Abstract

    Offshore oil and natural gas platforms are responsible for about 30% of global oil and natural gas production. Despite the large share of global production there is little known about the greenhouse gas emissions from these production facilities. Given the lack of direct measurements, studies that seek to understand the greenhouse gas contribution of offshore oil and gas platforms are incredibly important. The use of airborne remote sensing to map greenhouse gases from onshore oil and gas infrastructure has become a prominent method to quantify and attribute large individual emissions to their sources. However, until now, this method has not been used offshore due to the lack of consistent reflected radiance over water bodies.  In this talk I will present the results from a 2021 study where we used visible/infrared imaging spectrometer data collected over the Gulf of Mexico to map methane emissions from shallow water offshore oil and natural gas platforms. I will discuss the methods we employed to map methane in the offshore environment and how that differs from the onshore environment. I will show how remote sensing can efficiently observe offshore infrastructure, quantify methane emissions, and attribute those emissions to specific infrastructure types.

    Bio

    Dr Alana Ayasse is a research scientist at Carbon Mapper and the University of Arizona. She earned her BA in Geography and Environmental Studies from UCLA and her PhD in Geography from UCSB. Her research focuses on improving remote sensing techniques to map methane and carbon dioxide plumes, understanding the role of satellites in a global carbon monitoring system, and using remote sensing data to further understand trends in carbon emissions.

  • October 10, 2022 11:30 am - October 10, 2022 12:30 pm

    TBD

  • October 17, 2022 11:30 am - October 17, 2022 12:30 pm

    TBD

  • October 24, 2022 11:30 am - October 24, 2022 12:30 pm

    TBD

  • October 31, 2022 11:30 am - October 31, 2022 12:30 pm

    TBD

  • November 7, 2022 11:30 am - November 7, 2022 12:30 pm

    TBD

  • November 14, 2022 11:30 am - November 14, 2022 12:30 pm

    TBD

  • November 21, 2022 11:30 am - November 21, 2022 12:30 pm

    TBD

  • November 28, 2022 11:30 am - November 28, 2022 12:30 pm

    TBD

  • December 5, 2022 11:30 am - December 5, 2022 12:30 pm

    TBD