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Institution

Louisiana State University

EducationBaton Rouge, Louisiana, United States
About: Louisiana State University is a education organization based out in Baton Rouge, Louisiana, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 40206 authors who have published 76587 publications receiving 2566076 citations. The organization is also known as: LSU & Louisiana State University and Agricultural and Mechanical College.
Topics: Population, Poison control, Wetland, Autism, Sediment


Papers
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Journal ArticleDOI
TL;DR: This paper conducted a meta-analysis of 28 studies encompassing 62 experiments examining effects of propagule supply (seed arrival) on plant species richness under contrasting intensities of ecological filters (owing to disturbance and resource availability).
Abstract: Theoretical models predict that effects of dispersal on local biodiversity are influenced by the size and composition of the species pool, as well as ecological filters that limit local species membership. We tested these predictions by conducting a meta-analysis of 28 studies encompassing 62 experiments examining effects of propagule supply (seed arrival) on plant species richness under contrasting intensities of ecological filters (owing to disturbance and resource availability). Seed arrival increased local species richness in a wide range of communities (forest, grassland, montane, savanna, wetland), resulting in a positive mean effect size across experiments. Mean effect size was 70% higher in disturbed relative to undisturbed communities, suggesting that disturbance increases recruitment opportunities for immigrating species. In contrast, effect size was not significantly influenced by nutrient or water availability. Among seed-addition experiments, effect size was positively correlated with species and functional diversity within the pool of added seeds (species evenness and seed-size diversity), primarily in disturbed communities. Our analysis provides experimental support for the general hypothesis that species pools and local environmental heterogeneity interactively structure plant communities. We highlight empirical gaps that can be addressed by future experiments and discuss implications for community assembly, species coexistence, and the maintenance of biodiversity.

327 citations

Journal ArticleDOI
TL;DR: The therapeutic effects of uric acid may be related to the scavenging of the radicals CO(*-)(3) and NO(*)(2) that are formed from the reaction of peroxynitrite with CO(2) and may represent a new and viable approach for ameliorating the adverse effects associated with peroxlynitrite in many diseases.

327 citations

Journal ArticleDOI
TL;DR: The Selenium and Vitamin E Cancer Prevention Trial (SELECT) as mentioned in this paper, which opened on July 25, 2001, was planned to study possible agents for the prevention of prostate cancer in a population of 32,400 men in the United States, including Puerto Rico and Canada.
Abstract: Prostate cancer continues to be a major health threat, especially among African American men. The Selenium and Vitamin E Cancer Prevention Trial (SELECT), which opened on July 25, 2001, was planned to study possible agents for the prevention of prostate cancer in a population of 32,400 men in the United States, including Puerto Rico, and Canada. SELECT is a phase III randomized, placebo-controlled trial of selenium (200 microg/day from L-selenomethionine) and/or vitamin E (400 IU/day of all rac alpha-tocopheryl acetate) supplementation for a minimum of 7 years (maximum of 12 years) in non-African American men at least 55 years of age and African American men at least 50 years of age. SELECT is a large, simple trial that conforms as closely as possible with community standards of care. This commentary discusses the design problems the SELECT investigators had to resolve in developing the trial, including the role of prostate cancer screening, the best forms and doses of the study agents, and estimation of the event (prostate cancer) rate of men on the placebo arm.

327 citations

Journal ArticleDOI
TL;DR: The objective of this review was to synthesize existing information regarding the effects of petroleum hydrocarbons on marsh macrophytes in a manner that will help guide research and improve spill-response efficiency.

327 citations

Journal ArticleDOI
TL;DR: This work estimates the age of the crown-group hummingbird assemblage, investigates the timing and patterns of lineage accumulation for hummingbirds overall and regionally, and evaluates the role of Andean uplift in hummingbird speciation.

326 citations


Authors

Showing all 40485 results

NameH-indexPapersCitations
H. S. Chen1792401178529
John A. Rogers1771341127390
Omar M. Yaghi165459163918
Barry M. Popkin15775190453
John E. Morley154137797021
Claude Bouchard1531076115307
Ruth J. F. Loos14264792485
Ali Khademhosseini14088776430
Shanhui Fan139129282487
Joseph E. LeDoux13947891500
Christopher T. Walsh13981974314
Kenneth A. Dodge13846879640
Steven B. Heymsfield13267977220
George A. Bray131896100975
Zhanhu Guo12888653378
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202362
2022608
20213,042
20203,095
20192,874
20182,762