Henintsoa Onivola Minoarivelo

Henintsoa Onivola Minoarivelo
Stellenbosch University | SUN · Department of Mathematical Sciences

PhD

About

24
Publications
15,437
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Introduction
Skills and Expertise

Publications

Publications (24)
Article
Full-text available
International, regional, and national organizations, alongside policymakers, are increasingly acknowledging the crucial connection between climate, peace, and security. However, there remains a notable gap in research methodologies capable of fully grasping the intricate dynamics of this relationship. This paper introduces the Integrated Climate Se...
Technical Report
Robust climate data is critical to understanding trends and changes in the climate system and assessing/ understanding how the climate will change in the future under different socioeconomic conditions. This information is critical for policy and planning in responding to climate risks. However, Africa suffers from insufficient observational networ...
Preprint
Full-text available
International, regional, and national organizations and policymakers are increasingly acknowledging the implications of climate on peace and security, but robust research approaches that embrace the complexity of this nexus are lacking. In this paper, we present the Integrated Climate Security Framework (ICSF), a mixed-methods framework to understa...
Article
Full-text available
Our ability to predict the outcome of invasion declines rapidly as non-native species progress through intertwined ecological barriers to establish and spread in recipient ecosystems. This is largely due to the lack of systemic knowledge on key processes at play as species establish self-sustaining populations within the invaded range. To address t...
Article
Full-text available
Community and invasion ecology have mostly grown independently. There is substantial overlap in the processes captured by different models in the two fields, and various frameworks have been developed to reduce this redundancy and synthesize information content. Despite broad recognition that community and invasion ecology are interconnected, a pro...
Article
Full-text available
The structure of pollination networks, particularly its nestedness, contain important information on network assemblages. However, there is still limited understanding of the mechanisms underlying nested pollination network structures. Here, we investigate the role of Adaptive Interaction Switching (AIS), island area, isolation, age and sampling ef...
Article
Full-text available
Coevolution can impose density-dependent selection through reciprocal biotic interactions on the fitness of involved species, driving directional and disruptive trait evolution and rich evolutionary possibilities. Coevolution has since Darwin been considered a potential path leading to adaptive diversification that could explain the emergence of ec...
Article
Frugivores and fleshy-fruited plants commonly engage in the mutually beneficial interaction by dispersing seeds while consuming fruit pulps. Such mutualistic interactions can have profound impacts on the persistence and distributions of plant populations. Based on pair approximation, we here develop a process-based mechanistic model that captures t...
Article
Full-text available
Our planet is changing at paces never observed before. Species extinction is happening at faster rates than ever, greatly exceeding the five mass extinctions in the fossil record. Nevertheless, our lives are strongly based on services provided by ecosystems, thus the responses to global change of our natural heritage are of immediate concern. Under...
Chapter
Ever since Darwin’s inception of speciation via natural selection, scientists have started to develop models to capture evolutionary dynamics. Two types of models have emerged: those rooted in population genetics versus those modelling the evolutionary dynamics of phenotypic traits, often in the broader context of entangled biotic interactions amon...
Chapter
Biodiversity is the most striking phenomenon in nature but perhaps also the most difficult to monitor and hypothesise. This chapter introduces key concepts and metrics for describing biodiversity patterns, as well as changes in these patterns. It starts with introducing the concepts of occupancy and aggregation across spatial scales for single spec...
Chapter
Species are not isolated but interact with other species for survival, forming complex ecological networks, such as food webs and pollination networks. These ecological networks are self-organised in nature for ecosystem functioning, with detectable non-random network structures and architectures. The ubiquity of these structures suggests some univ...
Chapter
Organisms move or disperse their progenies across space, either via their own motions or by currents and vectors. Spreading models differ on the level of tractability and realism. At the individual level, models of random walks have been developed to capture animal movement in heterogeneous landscapes. At the metapopulation level and regional scale...
Article
Ecological and evolutionary dynamics observed in mutualistic communities can be shaped by several mechanisms, including ecological interactions and their co-evolutionary consequences. Here we explore how intra and interspecific competition, together with mutualistic interactions, can affect community assembly through their effects on adaptive diver...
Chapter
Background and Significance of the topic: The planet is changing at paces never observed before. Species extinction is happening at faster rates than ever, greatly exceeding the five mass extinctions in the fossil record. Nevertheless, human life is strongly based on services provided by ecosystems, thus the responses to global change of the planet...
Article
Ecological and evolutionary dynamics observed in mutualistic communities can be shaped by several mechanisms, including ecological interactions and their co-evolutionary consequences. Here we explore how intra and interspecific competition, together with mutualistic interactions, can affect community assembly through their effects on adaptive diver...
Data
Figure S1. (a) Invasiveness and (b) impact (averaged over 100 medium‐size networks) of the invader as a function of invader characteristics when the invader is introduced once. Traits of the alien species can be outside the range of resident traits. White lines represent the zero level of invasiveness. Figure S2. Relative growth rate of the native...
Article
Biological invasion remains a major threat to biodiversity in general and a dis-ruptor to mutualistic interactions in particular. While a number of empirical studies have directly explored the role of invasion in mutualistic pollination networks, a clear picture is yet to emerge and a theoretical model for comprehension still lacking. Here, using a...
Article
Full-text available
The success of a biological invasion is context dependent, and yet two key concepts—the invasiveness of species and the invasibility of recipient ecosystems—are often defined and considered separately. We propose a framework that can elucidate the complex relationship between invasibility and invasiveness. It is based on trait-mediated interactions...
Article
Full-text available
Phylogenetic systematics seeks to describe and reconstruct the evolutionary relationships among and between organisms making use of molecular data. This field has become immensely popular in recent years, with the associated computational demands growing in leaps and bounds. Here, we review the progress made in statistical phylogenetics, compare th...
Article
As asymmetric structures of mutualistic networks can potentially contribute to system resilience, elucidating drivers behind the emergence of particular network architectures remains a major endeavour in ecology. Here, using an eco-evolutionary model for bipartite mutualistic networks with trait-mediated interactions, we explore how particular leve...
Chapter
Coevolution can trigger frequency-dependent selection by reciprocal effects on the fitness of involved species. Through directional and disruptive selection, coevolution can lead to rich evolutionary possibilities. It can be classified by major types of biotic interactions (mutualism and antagonism) or by the number of species involved (specific, d...
Article
Ecological interaction networks, such as those describing the mutualistic interactions between plants and their pollinators or between plants and their frugivores, exhibit non-random structural properties that cannot be explained by simple models of network formation. One factor aff ecting the formation and eventual structure of such a network is i...

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