The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Nathan G Swenson - One of the best experts on this subject based on the ideXlab platform.
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commonness rarity and Intraspecific Variation in traits and performance in tropical tree seedlings
Ecology Letters, 2015Co-Authors: Maria Natalia Umana, Caicai Zhang, Nathan G SwensonAbstract:One of the few rules in ecology is that communities are composed of many rare and few common species. Trait-based investigations of abundance distributions have generally focused on species-mean trait values with mixed success. Here, using large tropical tree seedling datasets in China and Puerto Rico, we take an alternative approach that considers the magnitude of Intraspecific Variation in traits and growth as it relates to species abundance. We find that common species are less variable in their traits and growth. Common species also occupy core positions within community trait space indicating that they are finely tuned for the available conditions. Rare species are functionally peripheral and are likely transients struggling for success in the given environment. The work highlights the importance of considering Intraspecific Variation in trait-based ecology and demonstrates asymmetry in the magnitude of Intraspecific Variation among species is critical for understanding of how traits are related to abundance.
John H. Werren - One of the best experts on this subject based on the ideXlab platform.
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Intraspecific Variation in sexual isolation in the jewel wasp Nasonia
Evolution, 2000Co-Authors: Seth R Bordenstein, Mark D. Drapeau, John H. WerrenAbstract:Divergence in mate recognition systems can lead to reproductive isolation. In this study, we investigate patterns of Intraspecific Variation that contribute to premating isolation within and between two haplodiploid species, Nasonia vitripennis and N. longicornis. In a broad-scale survey of 17 North American isofemale lines encompassing the two species, we report strong asymmetric sexual isolation between species and a dramatic level of Intraspecific Variation for mate discrimination between species. A general lack of incipient speciation was found, with the exception of low levels of interpopulational sexual isolation within N. vitripennis. Regression analysis shows that the degree of Intraspecific Variation for within-species mating frequency is not associated with the degree for between-species mating frequency. Reinforcement or reproductive character displacement may be involved in some of the Variation in interspecies premating isolation.
Carsten Schradin - One of the best experts on this subject based on the ideXlab platform.
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Intraspecific Variation in social organization by genetic Variation developmental plasticity social flexibility or entirely extrinsic factors
Philosophical Transactions of the Royal Society B, 2013Co-Authors: Carsten SchradinAbstract:Previously, it was widely believed that each species has a specific social organization, but we know now that many species show Intraspecific Variation in their social organization. Four different processes can lead to Intraspecific Variation in social organization: (i) genetic Variation between individuals owing to local adaptation (between populations) or evolutionarily stable strategies within populations; (ii) developmental plasticity evolved in long-term (more than one generation) unpredictable and short-term (one generation) predictable environments, which is mediated by organizational physiological effects during early ontogeny; (iii) social flexibility evolved in highly unpredictable environments, which is mediated by activational physiological effects in adults; (iv) entirely extrinsic factors such as the death of a dominant breeder. Variation in social behaviour occurs between individuals in the case of genetic Variation and developmental plasticity, but within individuals in the case of social flexibility. It is important to study Intraspecific Variation in social organization to understand the social systems of species because it reveals the mechanisms by which species can adapt to changing environments, offers a useful tool to study the ultimate and proximate causes of sociality, and is an interesting phenomenon by itself that needs scientific explanation.
Caicai Zhang - One of the best experts on this subject based on the ideXlab platform.
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commonness rarity and Intraspecific Variation in traits and performance in tropical tree seedlings
Ecology Letters, 2015Co-Authors: Maria Natalia Umana, Caicai Zhang, Nathan G SwensonAbstract:One of the few rules in ecology is that communities are composed of many rare and few common species. Trait-based investigations of abundance distributions have generally focused on species-mean trait values with mixed success. Here, using large tropical tree seedling datasets in China and Puerto Rico, we take an alternative approach that considers the magnitude of Intraspecific Variation in traits and growth as it relates to species abundance. We find that common species are less variable in their traits and growth. Common species also occupy core positions within community trait space indicating that they are finely tuned for the available conditions. Rare species are functionally peripheral and are likely transients struggling for success in the given environment. The work highlights the importance of considering Intraspecific Variation in trait-based ecology and demonstrates asymmetry in the magnitude of Intraspecific Variation among species is critical for understanding of how traits are related to abundance.
Seth R Bordenstein - One of the best experts on this subject based on the ideXlab platform.
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Intraspecific Variation in sexual isolation in the jewel wasp Nasonia
Evolution, 2000Co-Authors: Seth R Bordenstein, Mark D. Drapeau, John H. WerrenAbstract:Divergence in mate recognition systems can lead to reproductive isolation. In this study, we investigate patterns of Intraspecific Variation that contribute to premating isolation within and between two haplodiploid species, Nasonia vitripennis and N. longicornis. In a broad-scale survey of 17 North American isofemale lines encompassing the two species, we report strong asymmetric sexual isolation between species and a dramatic level of Intraspecific Variation for mate discrimination between species. A general lack of incipient speciation was found, with the exception of low levels of interpopulational sexual isolation within N. vitripennis. Regression analysis shows that the degree of Intraspecific Variation for within-species mating frequency is not associated with the degree for between-species mating frequency. Reinforcement or reproductive character displacement may be involved in some of the Variation in interspecies premating isolation.
