scholarly journals Tree Demography Plots

2018 ◽  
pp. 9-21
Author(s):  
Peter Ashton
Keyword(s):  
Tropical Forest ◽  
Research Collaboration ◽  
Smithsonian Institution ◽  
Tropical Trees ◽  
Ecological Data ◽  
Research Teams ◽  
Large Tree ◽  
Tree Demography ◽  
Forest Science ◽  
Periodic Examination

The pantropical network of large tree demography plots coordinated by the Smithsonian’s Center for Tropical Forest Science has now gone global, as part of the Smithsonian Institution Global Earth Observatories. Some four million tropical trees, representing about 10,000 species, are now tagged, provisionally identified and periodically recensused. Some 3,000 species are captured in the six plots within Malesia. These include species rarely collected and many that are now endangered. Easy location of trees for periodic examination for fertile material and detailed ecological data, together with seasoned in-country research teams, provide unique opportunities for research collaboration.

scholarly journals Lightning Damage Facilitates Beetle Colonization of Tropical Trees

2020 ◽  
Author(s):  
Brady P Parlato ◽  
Evan M Gora ◽  
Stephen P Yanoviak
Keyword(s):  
Population Dynamics ◽  
Tropical Forest ◽  
Forest Ecosystems ◽  
Tropical Trees ◽  
Pine Forests ◽  
Forest Trees ◽  
Beetle Population ◽  
Tree Diameter ◽  
Crown Dieback ◽  
The Relationship

Abstract Lightning is a common agent of disturbance in many forest ecosystems. Lightning-damaged trees are a potentially important resource for beetles, but most evidence for this association is limited to temperate pine forests. Here, we evaluated the relationship between lightning damage and beetle colonization of tropical trees. We recorded the number of beetle holes on the trunks of trees from 10 strike sites (n = 173 lightning-damaged trees) and 10 matching control sites (n = 137 control trees) in Panama. The trunks of lightning-struck trees had 370% more beetle holes than control trees. The abundance of beetle holes increased with increasing total crown dieback among both control and lightning-damaged trees, and with larger tree diameter among lightning-struck trees. Beetle holes also were more abundant in trunk sections of lightning-damaged trees located directly below a damaged section of the crown. The results of this study suggest that lightning damage facilitates beetle colonization in tropical forest trees and provide a basis for investigations of the effects of lightning-caused disturbance on beetle population dynamics and assemblage structure.

scholarly journals From Writing the Grant to Working the Grant: An Exploration of Processes and Procedures in Transition

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Lynne Siemens
Keyword(s):  
Research Team ◽  
Research Collaboration ◽  
Research Question ◽  
Research Work ◽  
Grant Application ◽  
Research Teams ◽  
Funding Success ◽  
Planning Processes ◽  
Scholarly Contribution ◽  
Research Grant

Fundamental to many projects, a research grant application outlines a research question to be explored as well as its importance and scholarly contribution. This article’s aim is to explore this transition from the grant application to the actual funded research work by examining the experience of INKE, a large interdisciplinary research team. After more than five years of planning and funding success, the research team needed to develop more specific procedures and policies that would facilitate their collaboration than had been outlined in the grant application. Issues under consideration included governance documents, intellectual property policies, leave/exit policies, planning processes, and the inclusion of new researchers and partners. This article will conclude with recommendations on transition and process planning for research teams to ensure effective research collaboration.

scholarly journals The HUPO Human Proteome Project (HPP), a Global Health Research Collaboration

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
Gilbert S. Omenn
Keyword(s):  
Research Collaboration ◽  
Genome Project ◽  
Human Proteome ◽  
Global Health Research ◽  
Preventive Interventions ◽  
World Congress ◽  
Research Teams ◽  
Human Proteome Project ◽  
Biological Foundation ◽  
Sydney Australia

The global Human Proteome Project (HPP) was announced by the Human Proteome Organization (HUPO) at the 2010 World Congress of Proteomics in Sydney, Australia, and launched at the 2011 World Congress of Proteomics in Geneva, Switzerland, with analogies to the highly successful Human Genome Project. Extensive progress was reported at the September 2012 World Congress in Boston, USA. The HPP is designed to map the entire human proteome using available and emerging technologies.The HPP aims to create a molecular and biological foundation for improving health globally through better understanding of disease processes, more accurate diagnoses, and targets for more effective therapies and preventive interventions against many diseases. There are opportunities for individual investigators everywhere to access advanced datasets and to join HPP research teams.

Collaborative Production in Science: An Empirical Analysis of Coauthorships in Economics

2021 ◽  
pp. 1-45
Author(s):  
Katharine A. Anderson ◽  
Seth Richards-Shubik
Keyword(s):  
Empirical Analysis ◽  
Research Collaboration ◽  
Network Formation ◽  
Scientific Research ◽  
Research Teams ◽  
Communication And Coordination

Abstract This paper studies productivity and preferences in scientific research. Collaboration is increasingly important for innovation in science, and other domains, but we have limited understanding of the factors researchers use to choose their collaborators and the projects they work on. Here, we use a model of strategic network formation and a recently developed econometric method to examine this question in the context of economics researchers. We learn that research teams with more collaborators tend to produce papers with higher impact, without increasing individual costs of communication and coordination. This suggests the trend toward larger research teams in economics will continue.

Reproductive allocation and pollinator distributions in cauliflorus trees in Trinidad

1997 ◽  
Vol 13 (3) ◽  
pp. 337-345 ◽  
Author(s):  
John M. Warren ◽  
Debbie Z. Emamdie ◽  
Kalai
Keyword(s):  
Tropical Forest ◽  
Fruit Set ◽  
Dry Weight ◽  
Tropical Trees ◽  
Reproductive Allocation ◽  
Flower Size ◽  
Insect Pollinators ◽  
Selection For

ABSTRACTLittle information is available to test the various theories which have been proposed to explain the evolution of cauliflory. This study provides such data from observations in Trinidad of the numbers of potential pollinators visiting trunk and canopy flowers and on the size of canopy and trunk flowers and fruits. Subsidiary observations were made on the partitioning of resources between the sexes within flowers. Significantly more potential insect pollinators were trapped around the trunk flowers of two cauliflorous species than were caught around their canopy flowers. Trunk flowers were found to be larger than canopy flowers in four of the seven cauliflorous species studied, but they were smaller in one species. The higher probability of fruit set on trunks than in the canopy may have selected for cauliflory and subsequently increased trunk flower size in insect-pollinated understorey tropical trees. There was a tendency for flowers on the trunk not only to be larger but also to allocate relatively more dry weight to female parts and result in larger fruit than those in the canopy. These observations are consistent with Wallace's theory of the evolution of cauliflory, which argues that the condition arose in the dark understorey of the tropical forest, as a result of selection for trunk flowers which are more apparent to pollinators than are canopy flowers. However, other explanations for the evolution of cauliflory are not precluded as they are not mutually exclusive.

Photosynthesis–nitrogen relationships in tropical forest tree species as affected by soil phosphorus availability: a controlled environment study

2014 ◽  
Vol 41 (8) ◽  
pp. 820 ◽  
Author(s):  
Keith J. Bloomfield ◽  
Graham D. Farquhar ◽  
Jon Lloyd
Keyword(s):  
Tropical Forest ◽  
Tree Species ◽  
Tropical Trees ◽  
Leaf Nitrogen ◽  
Phosphorus Availability ◽  
Tropical Tree ◽  
P Availability ◽  
Soil P ◽  
Tropical Tree Species ◽  
Soil P Availability

Tropical soils are often characterised by low phosphorus availability and tropical forest trees typically exhibit lower area-based rates of photosynthesis (Aa) for a given area-based leaf nitrogen concentration ([N]a) compared with plants growing in higher-latitude, N-limited ecosystems. Nevertheless, to date, very few studies have assessed the effects of P deprivation per se on Aa ↔ [N]a relationships in tropical trees. Our study investigated the effect of reduced soil P availability on light-saturated Aa and related leaf traits of seven Australian tropical tree species. We addressed the following questions: (1) Do contrasting species exhibit inherent differences in nutrient partitioning and morphology? (2) Does P deprivation lead to a change in the nature of the Aa ↔ [N]a relationship? (3) Does P deprivation lead to an alteration in leaf nitrogen levels or N allocation within the leaf? Applying a mixed effects model, we found that for these Australian tropical tree species, removal of P from the nutrient solution decreased area-based photosynthetic capacity (Amax,a) by 18% and reduced the slope of the Amax,a ↔ [N]a relationship and differences among species accounted for around 30% of response variation. Despite greater N allocation to chlorophyll, photosynthetic N use efficiency was significantly reduced in low-P plants. Collectively, our results support the view that low soil P availability can alter photosynthesis–nitrogen relationships in tropical trees.

scholarly journals Predicting Potential Co-Authorship Using Random Forest: Case of Scientific Publications in Indonesian Institute of Sciences

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Rizka Rahmaida ◽  
Asep Saefuddin ◽  
Bagus Sartono
Keyword(s):  
Random Forest ◽  
Research Collaboration ◽  
Research Management ◽  
Research Interest ◽  
Scientific Publications ◽  
Research Teams ◽  
Research Collaborations ◽  
First Time ◽  
Fold Cross Validation

<p>Research collaboration is one of the strength in research management due to its advantages in quantity and quality of the research. Co-authorship network is one of the proxies to evaluate the emerging research collaborations. Co-authorship that happens for the first time among a pair of author plays an important role as the key of success for their co-authorship in the future. Therefore, the research aims to build a model predicting new co-authorship as potential co-authorship. This research used scientific articles in Indonesian biodiversity research published in Scopus during 2006-2015. New co-authorship of between 4,628 pair of authors were analyzed in terms of their similarity in co-authorship network, research interest, and community to predict whether a pair of author will have a new co-authorship in future. Random forest classifier was used to build the model after applying 10-fold cross validation in various parameter and random undersampling technique as preprocessing procedures. The result shows that the similarity in network, community network, and research interest and becomes good features to predict the potential co-authorship among a pair of author. Furthermore, paired authors that predicted to be co-authored and involving authors from Indonesian Institute of Sciences are identified as the potential patners recommended for development of research teams.</p>

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