The Experts below are selected from a list of 73713 Experts worldwide ranked by ideXlab platform
Zhishu Xiao - One of the best experts on this subject based on the ideXlab platform.
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Trait‐mediated seed predation, dispersal and survival among frugivore‐dispersed plants in a fragmented subtropical forest, Southwest China
Integrative Zoology, 2014Co-Authors: Xin Lai, Cong Guo, Zhishu XiaoAbstract:By tracking the fate of individual seeds from 6 frugivore-dispersed plants with contrasting seed traits in a fragmented subtropical forest in Southwest China, we explored how rodent seed predation and hoarding were influenced by seed traits such as seed size, seed coat hardness and seed profitability. Post-dispersal seed fates varied significantly among the 6 seed species and 3 patterns were witnessed: large-seeded species with a hard seed coat (i.e. Choerospoadias axillaries and Diospyros kaki var. silvestris) had more seeds removed, cached and then surviving at caches, and they also had fewer seeds predated but a higher proportion of seeds surviving at the source; medium-sized species with higher profitability and thinner seed coat (i.e. Phoebe zhennan and Padus braohypoda) were first harvested and had the Lowest Probability of seeds surviving either at the source or at caches due to higher predation before or after removal; and small-seeded species with lower profitability (i.e. Elaeocarpus japonicas and Cornus controversa) had the highest Probability of seeds surviving at the source but the Lowest Probability of seeds surviving at caches due to lower predation at the source and lower hoarding at caches. Our study indicates that patterns of seed predation, dispersal and survival among frugivore-dispersed plants are highly determined by seed traits such as seed size, seed defense and seed profitability due to selective predation and hoarding by seed-eating rodents. Therefore, trait-mediated seed predation, dispersal and survival via seed-eating rodents can largely affect population and community dynamics of frugivore-dispersed plants in fragmented forests.
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trait mediated seed predation dispersal and survival among frugivore dispersed plants in a fragmented subtropical forest southwest china
Integrative Zoology, 2014Co-Authors: Zhishu XiaoAbstract:: By tracking the fate of individual seeds from 6 frugivore-dispersed plants with contrasting seed traits in a fragmented subtropical forest in Southwest China, we explored how rodent seed predation and hoarding were influenced by seed traits such as seed size, seed coat hardness and seed profitability. Post-dispersal seed fates varied significantly among the 6 seed species and 3 patterns were witnessed: large-seeded species with a hard seed coat (i.e. Choerospoadias axillaries and Diospyros kaki var. silvestris) had more seeds removed, cached and then surviving at caches, and they also had fewer seeds predated but a higher proportion of seeds surviving at the source; medium-sized species with higher profitability and thinner seed coat (i.e. Phoebe zhennan and Padus braohypoda) were first harvested and had the Lowest Probability of seeds surviving either at the source or at caches due to higher predation before or after removal; and small-seeded species with lower profitability (i.e. Elaeocarpus japonicas and Cornus controversa) had the highest Probability of seeds surviving at the source but the Lowest Probability of seeds surviving at caches due to lower predation at the source and lower hoarding at caches. Our study indicates that patterns of seed predation, dispersal and survival among frugivore-dispersed plants are highly determined by seed traits such as seed size, seed defense and seed profitability due to selective predation and hoarding by seed-eating rodents. Therefore, trait-mediated seed predation, dispersal and survival via seed-eating rodents can largely affect population and community dynamics of frugivore-dispersed plants in fragmented forests.
Gary Painter - One of the best experts on this subject based on the ideXlab platform.
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The Schooling Costs of Teenage Out-of-Wedlock Childbearing: Analysis with a Within-School Propensity-Score-Matching Estimator
Review of Economics and Statistics, 2003Co-Authors: David I. Levine, Gary PainterAbstract:Teen out-of-wedlock mothers have lower education and earnings than peers who have children later. This study uses the National Educational Longitudinal Survey of 1988 (NELS) to examine the extent to which the apparent effects of out-of-wedlock teen fertility are due to pre- existing disadvantages of the young women and their families. We use a novel method that matches teen mothers to similar young women in their junior high school (that is, prior to pregnancy). We find that out-of-wedlock fertility reduces education substantially, although far less than the cross-sectional comparisons of means suggest. We further find that this effect is largest among those with the Lowest Probability of having a child out of wedlock.
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The Costs of Teenage Out-of-Wedlock Childbearing: Analysis with a Within-School Propensity Score
2000Co-Authors: David I. Levine, Gary PainterAbstract:Teen out-of-wedlock mothers have lower education and earnings than peers who have children later. This study uses the National Educational Longitudinal Survey of 1988 (NELS) to examine the extent to which the apparent effects of out-of-wedlock teen fertility are due to pre- existing disadvantages of the young women and their families. We use a novel method that matches teen mothers to similar young women in their junior high school (that is, prior to pregnancy). We find that out-of-wedlock fertility reduces education substantially, although far less than the cross-sectional comparisons of means suggest. We further find that this effect is largest among those with the Lowest Probability of having a child out of wedlock.
Xin Lai - One of the best experts on this subject based on the ideXlab platform.
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Trait‐mediated seed predation, dispersal and survival among frugivore‐dispersed plants in a fragmented subtropical forest, Southwest China
Integrative Zoology, 2014Co-Authors: Xin Lai, Cong Guo, Zhishu XiaoAbstract:By tracking the fate of individual seeds from 6 frugivore-dispersed plants with contrasting seed traits in a fragmented subtropical forest in Southwest China, we explored how rodent seed predation and hoarding were influenced by seed traits such as seed size, seed coat hardness and seed profitability. Post-dispersal seed fates varied significantly among the 6 seed species and 3 patterns were witnessed: large-seeded species with a hard seed coat (i.e. Choerospoadias axillaries and Diospyros kaki var. silvestris) had more seeds removed, cached and then surviving at caches, and they also had fewer seeds predated but a higher proportion of seeds surviving at the source; medium-sized species with higher profitability and thinner seed coat (i.e. Phoebe zhennan and Padus braohypoda) were first harvested and had the Lowest Probability of seeds surviving either at the source or at caches due to higher predation before or after removal; and small-seeded species with lower profitability (i.e. Elaeocarpus japonicas and Cornus controversa) had the highest Probability of seeds surviving at the source but the Lowest Probability of seeds surviving at caches due to lower predation at the source and lower hoarding at caches. Our study indicates that patterns of seed predation, dispersal and survival among frugivore-dispersed plants are highly determined by seed traits such as seed size, seed defense and seed profitability due to selective predation and hoarding by seed-eating rodents. Therefore, trait-mediated seed predation, dispersal and survival via seed-eating rodents can largely affect population and community dynamics of frugivore-dispersed plants in fragmented forests.
David I. Levine - One of the best experts on this subject based on the ideXlab platform.
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The Schooling Costs of Teenage Out-of-Wedlock Childbearing: Analysis with a Within-School Propensity-Score-Matching Estimator
Review of Economics and Statistics, 2003Co-Authors: David I. Levine, Gary PainterAbstract:Teen out-of-wedlock mothers have lower education and earnings than peers who have children later. This study uses the National Educational Longitudinal Survey of 1988 (NELS) to examine the extent to which the apparent effects of out-of-wedlock teen fertility are due to pre- existing disadvantages of the young women and their families. We use a novel method that matches teen mothers to similar young women in their junior high school (that is, prior to pregnancy). We find that out-of-wedlock fertility reduces education substantially, although far less than the cross-sectional comparisons of means suggest. We further find that this effect is largest among those with the Lowest Probability of having a child out of wedlock.
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The Costs of Teenage Out-of-Wedlock Childbearing: Analysis with a Within-School Propensity Score
2000Co-Authors: David I. Levine, Gary PainterAbstract:Teen out-of-wedlock mothers have lower education and earnings than peers who have children later. This study uses the National Educational Longitudinal Survey of 1988 (NELS) to examine the extent to which the apparent effects of out-of-wedlock teen fertility are due to pre- existing disadvantages of the young women and their families. We use a novel method that matches teen mothers to similar young women in their junior high school (that is, prior to pregnancy). We find that out-of-wedlock fertility reduces education substantially, although far less than the cross-sectional comparisons of means suggest. We further find that this effect is largest among those with the Lowest Probability of having a child out of wedlock.
Mirjam Van Praag - One of the best experts on this subject based on the ideXlab platform.
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The entrepreneur's mode of entry: business takeover or new venture start?
Journal of Business Venturing, 2012Co-Authors: Simon C. Parker, Mirjam Van PraagAbstract:We analyse the decision to become an entrepreneur by either taking over an established business or starting a new venture from scratch. A model is developed which predicts how several individual- and firm-specific characteristics influence entrepreneurs’ entry mode. The new venture creation mode is associated with higher levels of schooling and wealth, whereas managerial experience, new venture start-up capital requirements and risk promote the takeover mode. Entrepreneurs whose parents run a family firm are predicted to invest the least in schooling, since schooling reduces search costs and these individuals have the Lowest Probability of needing to search for a business opportunity outside their family. A sample of data on entrepreneurs from the Netherlands provides broad support for the theory; implications for policy-makers concerned about the survival of family firms lacking within-family successors are discussed.
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The entrepreneur’s mode of entry: Business takeover or new venture start?
2006Co-Authors: Simon C. Parker, Mirjam Van PraagAbstract:We analyse the decision to become an entrepreneur by either taking over an established business or starting a new venture from scratch. A model is developed which predicts how several individual- and firm-specific characteristics influence entrepreneurs'entry mode. The new venture creation mode is associated with higher levels of schooling and wealth, whereas managerial experience, new venture start-up capital requirements and risk promote the takeover mode. Entrepreneurs whose parents run a family firm are predicted to invest the least in schooling, since schooling reduces search costs and these individuals have the Lowest Probability of needing to search for a business opportunity outside their family. A sample of data on entrepreneurs from the Netherlands provides broad support for the theory; implications for policy-makers concerned about the survival of family firms lacking within-family successors are discussed.
