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Articles by Roberto Rozzi
Emergent patterns of island biodiversity in the Anthropocene
Abstract INTRODUCTION ISLAND DIVERSITY RELATIONSHIPS SHIFTING SPECIES COMPOSITION ON ISLANDS HUMAN INFLUENCES ON ISLAND EVOLUTIONARY PATTERNS ANTHROPOGENIC IMPACTS ON ISLAND SPECIES INTERACTION PATTERNS CONCLUDING REMARKS Acknowledgments REFERENCES Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Islands have long been foundational to the development of ecological and evolutionary theory, serving as model systems for studying patterns of...
Evolutionary age correlates with range size across plants and animals - Nature Communications
Abstract More than 40 thousand species of plants and animals are facing extinction worldwide. Range size is one of the strongest determinants of extinction risk, but the causes underlying the wide variation in natural range sizes remain poorly understood. Here, we investigate how species’ age is related to present-day range size for over 26,000 species of mammals, birds, reptiles, amphibians, reef fishes, and plants.
The evolutionary age-range size relationship is modulated by insularity and dispersal in plants and animals
Abstract Earth is home to millions of plant and animal species, with more than 40 thousand species facing extinction worldwide (Diaz et al. 2019). Species' range size is particularly important in this context because it influences extinction risk (Purvis et al. 2000, Gaston & Fuller 2009), but the causes underlying the wide natural variation in range size remain poorly known.
Unveiling global species abundance distributions - Nature Ecology & Evolution
Abstract Whether most species are rare or have some intermediate abundance is a long-standing question in ecology. Here, we use more than one billion observations from the Global Biodiversity Information Facility to assess global species abundance distributions (gSADs) of 39 taxonomic classes of eukaryotic organisms from 1900 to 2019.
Dwarfism and gigantism drive human-mediated extinctions on islands
LATEST NEWS Evolutionary arenas Islands often contain distinctive ecological conditions that can lead to unusual evolutionary trajectories such as dwarf mammoths and giant rats. Rozzi et al. looked across extant and extinct species from islands to determine whether these evolutionary “oddities” were more threatened and found that both dwarf and giant species were more at risk for extinction. Further, the arrival of humans, both deep in the past and in the present, accelerated their extinction.
Rapid Dwarfing of an Insular Mammal - The Feral Cattle of Amsterdam Island
The most rapid and well documented cases of island dwarfing known thus far took place over thousands of years and include red deer from Jersey, Channel Islands5, and mammoths from Wrangel Island, in the Siberian Arctic6. Dwarfing of cattle from Amsterdam Island occurred in an exceptionally short time of isolation, since only 117 years passed between its introduction and the first removal in 1988.
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