Book contents
- The Species–Area Relationship
- Ecology, Biodiversity and Conservation
- The Species–Area Relationship
- Copyright page
- Contents
- Contributors
- Foreword
- Preface
- Part I Introduction and History
- Part II Diversity–Area Relationships: The Different Types and Underlying Factors
- Part III Theoretical Advances in Species–Area Relationship Research
- Part IV The Species–Area Relationship in Applied Ecology
- 13 The Identification of Biodiversity Hotspots Using the Species–Area Relationship
- 14 Using the Species–Area Relationship to Predict Extinctions Resulting from Habitat Loss
- 15 Using Network Analysis to Explore the Role of Dispersal in Producing and Maintaining Island Species–Area Relationships
- 16 Does Geometry Dominate Extinction due to Habitat Loss?
- 17 Using Relict Species–Area Relationships to Estimate the Conservation Value of Reservoir Islands to Improve Environmental Impact Assessments of Dams
- 18 An Investigation of Species–Area Relationships in Marine Systems at Large Spatial Scales
- Part V Future Directions in Species–Area Relationship Research
- Index
- References
15 - Using Network Analysis to Explore the Role of Dispersal in Producing and Maintaining Island Species–Area Relationships
from Part IV - The Species–Area Relationship in Applied Ecology
Published online by Cambridge University Press: 11 March 2021
- The Species–Area Relationship
- Ecology, Biodiversity and Conservation
- The Species–Area Relationship
- Copyright page
- Contents
- Contributors
- Foreword
- Preface
- Part I Introduction and History
- Part II Diversity–Area Relationships: The Different Types and Underlying Factors
- Part III Theoretical Advances in Species–Area Relationship Research
- Part IV The Species–Area Relationship in Applied Ecology
- 13 The Identification of Biodiversity Hotspots Using the Species–Area Relationship
- 14 Using the Species–Area Relationship to Predict Extinctions Resulting from Habitat Loss
- 15 Using Network Analysis to Explore the Role of Dispersal in Producing and Maintaining Island Species–Area Relationships
- 16 Does Geometry Dominate Extinction due to Habitat Loss?
- 17 Using Relict Species–Area Relationships to Estimate the Conservation Value of Reservoir Islands to Improve Environmental Impact Assessments of Dams
- 18 An Investigation of Species–Area Relationships in Marine Systems at Large Spatial Scales
- Part V Future Directions in Species–Area Relationship Research
- Index
- References
Summary
By taking advantage of spatially explicit modelling and network analysis, we investigated how species–area relationships (SARs) emerge and are maintained by dispersal and how the spatial arrangement of islands affects colonization/extinction dynamics of SARs. In particular, we generated different archipelagos characterized by varying geometric properties and then we simulated inter-island dispersal/colonization patterns. As the model proceeds through time, species accumulate on different islands according to their dispersal ability and depending on island size and isolation. During each time step, the model fit a power function that thus enabled us to track the emergence of island SARs (ISARs). After equilibrium was reached, we simulated a phase of reduced dispersal. Each simulated archipelago was analysed as a network in which each island was a node connected to other nodes (islands) based on pairwise spatial distances. We found that basic properties of the underlying connectivity network were correlated with ISAR properties, although the best predictor of richness was almost always island area. In nearly all simulations, the ISAR weakened after reducing the dispersal ability of the species. Our study demonstrates that a spatially explicit dispersal simulation model and network analysis can provide meaningful insight into the evolution and robustness of ISARs.
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- The Species–Area RelationshipTheory and Application, pp. 368 - 398Publisher: Cambridge University PressPrint publication year: 2021