scholarly journals Leaf Trait Variation with Environmental Factors at Different Spatial Scales: A Multilevel Analysis Across a Forest-Steppe Transition

Forests ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 122 ◽  
Author(s):  
◽  
◽  
Keyword(s):  
Environmental Factors ◽  
Multilevel Analysis ◽  
Spatial Scales ◽  
Forest Steppe ◽  
Trait Variation ◽  
Leaf Trait

scholarly journals Disentangling the Environmental Factors That Shape Genetic and Phenotypic Leaf Trait Variation in the Tree Qualea grandiflora Across the Brazilian Savanna

2019 ◽  
Vol 10 ◽  
Author(s):  
Renata Santiago de Oliveira Buzatti ◽  
Thais Ribeiro Pfeilsticker ◽  
André Carneiro Muniz ◽  
Vincenzo A. Ellis ◽  
Renan Pedra de Souza ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Brazilian Savanna ◽  
Trait Variation ◽  
Leaf Trait

scholarly journals Climatic factors shaping intraspecific leaf trait variation of a neotropical tree along a rainfall gradient

PLoS ONE ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. e0208512 ◽  
Author(s):  
Matheus L. Souza ◽  
Alexandre A. Duarte ◽  
Maria B. Lovato ◽  
Marcilio Fagundes ◽  
Fernando Valladares ◽  
...  
Keyword(s):  
Climatic Factors ◽  
Trait Variation ◽  
Rainfall Gradient ◽  
Leaf Trait ◽  
Neotropical Tree

scholarly journals Hierarchical Environmental Factors Affecting the Distribution of Abies koreana on the Korean Peninsula

2018 ◽  
Author(s):  
Jeong Soo Park ◽  
Hak Sub Shin ◽  
Chul-hyun Choi ◽  
Jinhee Kim ◽  
Junghyo Lee
Keyword(s):  
Environmental Factors ◽  
Regression Model ◽  
Korean Peninsula ◽  
Spatial Scales ◽  
Weather Conditions ◽  
Winter Precipitation ◽  
Slope Aspect ◽  
Dwarf Bamboo ◽  
Abies Koreana ◽  
Korean Fir

Regional declines of the Korean fir (Abies koreana) have been observed since the 1980s on the subalpine region. To explain this decline, it is fundamental to investigate the degree to which environmental factors have contributed to plant distributions on diverse spatial scales. We applied a hierarchical regression model to determine quantitatively the relationship between the abundance of Korean fir (seedlings) and diverse environmental factors across two different ecological scales. We measured Korean fir density and the occurrence of its seedlings in 102 (84) plots nested at five sites and collected a range of environmental factors at the same plots. Our model included hierarchical explanatory variables at both site-level (weather conditions) and plot-level (micro-topographic factors, soil properties, and competing species). The occurrence of Korean fir seedlings was positively associated with moss cover and rock cover but negatively related to dwarf bamboo cover. On site-level, winter precipitation was significantly positively related to the occurrence of seedlings. A hierarchical Poisson regression model revealed that Korean fir density were negatively associated with slope aspect, topographic position index, Quercus mongolica cover, and mean summer temperature. Our results suggest that drought and competition with other species are factors which halt the survival of Korean fir. We can predict that the population of Korean fir will continue to decline on the Korean Peninsula due to rising temperatures and seasonal drought, and only a few Korean fir will survive on northern slopes or valleys where competition with dwarf bamboo and Q. mongolica can be avoided.

Topography consistently drives intra‐ and inter‐specific leaf trait variation within tree species complexes in a Neotropical forest

Oikos ◽  
2020 ◽  
Vol 129 (10) ◽  
pp. 1521-1530 ◽  
Author(s):  
Sylvain Schmitt ◽  
Bruno Hérault ◽  
Émilie Ducouret ◽  
Anne Baranger ◽  
Niklas Tysklind ◽  
...  
Keyword(s):  
Tree Species ◽  
Trait Variation ◽  
Leaf Trait ◽  
Neotropical Forest ◽  
Species Complexes

Species co-occurrence and environmental factors and their effect on the distribution of forest birds in mature forests

2019 ◽  
Vol 92 (5) ◽  
pp. 568-576 ◽  
Author(s):  
Mikel Xabier Andradas ◽  
Juan Arizaga ◽  
Javier Rodríguez-Pérez
Keyword(s):  
Environmental Factors ◽  
Iberian Peninsula ◽  
Spatial Scales ◽  
Biotic Interactions ◽  
Relative Effect ◽  
Bird Communities ◽  
Forest Birds ◽  
Southern Europe ◽  
Passerine Species ◽  
Northern Iberian Peninsula

Abstract Measures of species co-occurrence, as a proxy of biotic interactions, may be as important as environmental factors when explaining the distribution of many species. We assessed the relative effect of both species co-occurrence and environmental factors in predicting the occurrence (presence/absence) of woodpeckers and passerines in mature forests of the Northern Iberian Peninsula. We hypothesized that woodpecker occurrence would affect the occurrence of passerines. We calculated the occurrence of woodpecker species using models that included environmental factors aggregated at three spatial scales (200, 500 and 1,000-m2). The occurrence of passerine species was then modelled by using either species co-occurrence (including the occurrence of woodpecker species) or environmental factors at the 200-m2 cell scale. The occurrence of five out of nine passerine species was best explained by the co-occurrence of woodpeckers alone, whereas the occurrence of the remaining passerines was best explained using a combination of species co-occurrence (i.e. woodpeckers and/or other passerines) and environmental factors. In Southern Europe, woodpeckers are expanding their distribution in line with forest maturation, and this could increase the diversity of bird communities in forest systems.

scholarly journals Career Development Support, Job Adaptation, and Withdrawal Intention of Expatriates: A Multilevel Analysis of Environmental Factors

2019 ◽  
Vol 16 (20) ◽  
pp. 3880
Author(s):  
Hemin Song ◽  
Shuai Zhao ◽  
Wenwen Zhao ◽  
Hua Han
Keyword(s):  
Career Development ◽  
Environmental Factors ◽  
Multilevel Analysis ◽  
Multinational Corporations ◽  
Host Country ◽  
Reference Value ◽  
Analysis Model ◽  
Development Support ◽  
The Impact ◽  
Moderating Role

The present study aims to explore the impact of career development support on job adaptation and withdrawal intention, and the multilevel moderating role of host country environmental factors. Through the questionnaire survey, we collected 242 expatriates’ data of 25 countries from China’s multinational corporations. Based on the constructed multilevel analysis model, we find: (1) career development support has a significant impact on job adaptation and withdrawal intention of expatriates; (2) job adaptation plays a mediating role between career development support and withdrawal intention; and (3) host country environment plays the multilevel moderating role between career development support and job adaptation. Through the multilevel model of host country environment, this study explores the mechanism of how career development support affects job adaptation and withdrawal intention. The conclusions enhance the understanding of the adaptation of expatriates and have important theoretical and practical reference value to achieve successful expatriate in the context of host country environment.

scholarly journals Evaluating different methods for retrieving intraspecific leaf trait variation from hyperspectral leaf reflectance

2021 ◽  
Vol 130 ◽  
pp. 108111
Author(s):  
Kenny Helsen ◽  
Leonardo Bassi ◽  
Hannes Feilhauer ◽  
Teja Kattenborn ◽  
Hajime Matsushima ◽  
...  
Keyword(s):  
Trait Variation ◽  
Leaf Reflectance ◽  
Leaf Trait

scholarly journals Relationships between three major stream assemblages and their environmental factors in multiple spatial scales

2011 ◽  
Vol 47 ◽  
pp. S91-S105 ◽  
Author(s):  
Mi-Jung Bae ◽  
Yongsu Kwon ◽  
Soon-Jin Hwang ◽  
Tae-Soo Chon ◽  
Hyung-Jae Yang ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Spatial Scales ◽  
Multiple Spatial Scales

Within-species leaf trait variation and ecological flexibility in resprouting tropical trees

2012 ◽  
Vol 28 (5) ◽  
pp. 527-530 ◽  
Author(s):  
Carl F. Salk
Keyword(s):  
Leaf Area ◽  
Tree Species ◽  
Environmental Changes ◽  
Functional Trait ◽  
Leaf Mass Per Area ◽  
Trait Variation ◽  
Leaf Functional Traits ◽  
Leaf Trait ◽  
Neotropical Tree ◽  
Ecological Flexibility

Plants have an inherent flexibility to respond to different environmental conditions. One axis of plant ecophysiological strategy is seen in the spectrum of leaf functional traits. Flexibility in these traits would be suggestive of plants’ phenotypic plasticity in response to environmental changes. This research seeks to identify differences between leaves of sprout and non-sprout shoots of a broad ecological range of neotropical tree species. Using a functional-trait approach, this study assesses a large pool of species for within-species physiological flexibility. Leaf mass per area (LMA) and leaf area were measured for plants of sprout and non-sprout origin for 26 tree species grown in a reforestation plantation in Panama. Sprouts had a consistently lower LMA than non-sprouts, but there was no consistent pattern for leaf area. These trends show that sprouts are more like pioneer species than conspecific saplings, a finding in general agreement with fast sprout growth seen in previous studies. Further, later-successional (high LMA) species showed a greater reduction of LMA in sprouts. These results show that tropical tree species adjust physiologically to changing ecological roles and suggest that certain species may be more resilient than realized to changing climate and disturbance patterns.

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