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September 2011 - March 2017
- PhD Student
- PhD topic: "Interaction between African weaver ant (Oecophylla longinoda), mango fruit flies (Ceratitis cosyra and Bactrocera invadens) and their exotic parasitoids (Fopius arisanus and Diachasmimorpha longicaudata)"
Coral recruitment and successive growth are essential for post-disturbance reef recovery. As coral recruit and juvenile abundances vary across locations and under different environmental regimes, their assessment at remote, undisturbed reefs improves our understanding of early life stage dynamics of corals. Here, we first explored changes in coral...
Documenting post-bleaching trajectories of coral reef communities is crucial to understand their resilience to climate change. We investigated reef community changes following the 2015/16 bleaching event at Aldabra Atoll, where direct human impact is minimal. We combined benthic data collected pre- (2014) and post-bleaching (2016–2019) at 12 sites...
Coral reefs in the wider Caribbean declined in hard coral cover by ~80% since the 1970s, but spatiotemporal analyses for sub-regions are lacking. Here, we explored benthic change patterns in the Mexican Caribbean reefs through meta-analysis between 1978 and 2016 including 125 coral reef sites. Findings revealed that hard coral cover decreased from...
Predator-prey interactions can affect the behaviour of the species involved, with consequences for population distribution and competitive interactions. Under predation pressure, potential prey may adopt evasive strategies. These responses can be costly and could impact population growth. As some prey species may be more affected than others, preda...
Competitive and trophic interactions can be important forces determining the structure of ecological communities. As the effects of these interactions result from the behaviour adopted by individuals, investigating individual decision making processes helps understanding the mechanisms that mediate such interactions. Such an understanding can be cr...
Biological control and integrated pest management (IPM) of tephritid fruit flies has repeatedly made use of parasitoids as natural enemies to suppress fly populations. Parasitoids, however, are selected to maximize their individual reproductive success, and thus do not necessarily maximize pest suppression at the population level. Furthermore, more...
In frugivorous insects, the physiological state of the female (e.g. age, egg load) as well as environmental parameters like fruit availability and characteristics may affect oviposition decision, host choice and the resulting clutch size. We studied host acceptance and clutch size decision as a function of fly egg load as physiological state and ma...
The 2014-2017 global bleaching event caused mass mortality of corals worldwide, affecting also protected and remote reefs. This challenges the common notion that reefs far removed from local human impacts are more resilient to climate change. To better understand resilience of remote reefs, we study the impact of, and recovery since, the 2015/2016 coral bleaching event at Aldabra Atoll, a UNESCO World Heritage Site in the Seychelles. We combine the annual monitoring of benthic and fish assemblages with additional observations of coral larvae settlement, coral juvenile density and turf algae height to assess post-bleaching trajectories (i.e. stability/recovery/degradation) and how these differ on an atoll-wide scale.