Anna KOESTER
Seychelles Island Foundation
marine@sif.sc
Abstract
Aldabra Atoll, one of the world's most secluded and largest ecoregions, remains largely untouched by humans due to its remote location, limited freshwater resources, and difficult access. This isolation makes it an invaluable site for studying island evolutionary and ecological processes. However, climate change poses a significant threat to its ecosystems, requiring robust conservation efforts.
Over the past twelve years, marine conservation at Aldabra has made significant strides. This includes mapping its coral reefs and laying the groundwork for expanding the no-take Marine Protected Area (MPA) under the Seychelles Marine Spatial Plan from formerly 346 km2 to 2512 km2 in 2018. Additionally, the Seychelles Islands Foundation (SIF) has established an annual marine monitoring program, providing crucial insights into the dynamics of Aldabra's coral reefs, especially in response to coral bleaching events and their recovery. Scientific research at Aldabra continues to yield significant findings both nationally and internationally.
Looking ahead, enhancing ecosystem resilience in the face of increasing climate pressures is essential. Previous research has shown the interconnectedness of terrestrial and marine ecosystems, highlighting the role of seabird-derived nutrients in supporting native vegetation and boosting coral growth and fish biomass on reefs near seabird colonies. Therefore, eradicating invasive rats and cats, thereby restoring natural nutrient cycles, holds significant potential for fostering climate change adaptation across both, terrestrial and marine ecosystems.
The presentation detailed past and ongoing marine conservation and research initiatives at Aldabra, emphasizing their importance in advancing our understanding of the atoll's ecosystems. Additionally, it highlighted the potential of invasive mammal eradication as a means to enhance marine ecosystem-based adaptation to climate change, contributing to the conservation and resilience of Aldabra's unique natural heritage.
Power point presentation
