Fine‐scale tree spatial patterns are shaped by dispersal limitation which correlates to functional traits in a natural temperate forest

2021 ◽  
Author(s):  
Roxane Beyns ◽  
David Bauman ◽  
Thomas Drouet
Keyword(s):  
Functional Traits ◽  
Spatial Patterns ◽  
Temperate Forest ◽  
Dispersal Limitation ◽  
Fine Scale ◽  
Tree Spatial Patterns

Effects of adaptive multiple paddock and continuous grazing on fine-scale spatial patterns of vegetation species and biomass in commercial ranches

2021 ◽  
Author(s):  
Fugui Wang ◽  
Steven I. Apfelbaum ◽  
Ry L. Thompson ◽  
Richard Teague ◽  
Peter Byck
Keyword(s):  
Spatial Patterns ◽  
Fine Scale ◽  
Continuous Grazing ◽  
Vegetation Species

scholarly journals Reproductive performance links to fine-scale spatial patterns of female grey seal relatedness

2001 ◽  
Vol 268 (1468) ◽  
pp. 711-717 ◽  
Author(s):  
P. P. Pomeroy ◽  
J. Worthington Wilmer ◽  
W. Amos ◽  
S. D. Twiss
Keyword(s):  
Spatial Patterns ◽  
Reproductive Performance ◽  
Fine Scale ◽  
Grey Seal

Spatial patterns of seedling-adult associations in a temperate forest community

2013 ◽  
Vol 296 ◽  
pp. 74-80 ◽  
Author(s):  
Isabel Martínez ◽  
Fernando González Taboada ◽  
Thorsten Wiegand ◽  
José Ramón Obeso
Keyword(s):  
Spatial Patterns ◽  
Temperate Forest ◽  
Forest Community

scholarly journals Spatial Patterns in Different Stages of Regeneration after Clear-Cutting of a Black Locust Forest in Central China

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1066
Author(s):  
Zhang ◽  
Shen ◽  
Yang ◽  
Ma ◽  
Duan ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Stand Structure ◽  
Robinia Pseudoacacia ◽  
Spatial Relation ◽  
Dispersal Limitation ◽  
Central China ◽  
Variance Gamma ◽  
Clear Cutting ◽  
Variance Gamma Process ◽  
Underlying Mechanisms

Estimating underlying mechanisms and dynamics from observed tree patterns can provide guidance for plantation management. Robinia pseudoacacia can reproduce via clonally produced ramets, leading to a complex distribution of stems. Three second generation plots and three third generation plots (each plot 50 m × 50 m) were established across a wide age range after clear-cutting in a Robinia pseudoacacia plantation in central China. We measured spatial coordinates, diameter at breast height (DBH) or diameter at basal stem, and heights of all recruits, as well as the coordinates and base diameter of all stumps, in six plots. The spatial pattern in different plots and the spatial relation between stumps and regenerations after clear-cutting were analyzed. To estimate the underlying processes of the observed patterns, we fitted Matérn and Variance-Gamma cluster processes to the observed dataset. The results revealed that the percentage of ramets from stumps decreasing with age in the two types of stands (from 40.4% to 30.1%, from 57.6% to 35.7%), and trees exhibited an aggregated distribution in all plots, but the degree of aggregation exhibited a decreasing trend with age, and aggregation occurred at different scale. Furthermore, a large proportion of ramets had their nearest neighbor at a short distance (<1 m) based on analysis of the nearest neighbour function. The bivariate analysis revealed that the spatial relation between stumps and ramets changed with age, and a repulsion trend was found between them in all the six plots. The Variance-Gamma process with covariate of Cartesian coordinates fitted the observed patterns better than others. The observed pattern was likely driven by root dispersal limitation, seed dispersal limitation, human disturbance, and intraspecific competition. Spatial patterns are important characteristics in forest stand structure, and understanding the pattern change and its underlying mechanisms could allow for better timing of artificial disturbances to optimize stand structure and promote stand growth.

scholarly journals Spatial Patterns of Brown Rot Epidemics and Development of Microsatellite Markers for Analyzing Fine-Scale Genetic Structure of Monilinia fructicola Populations Within Peach Tree Canopies

2012 ◽  
Vol 13 (1) ◽  
pp. 28 ◽  
Author(s):  
S. E. Everhart ◽  
A. Askew ◽  
L. Seymour ◽  
T. C. Glenn ◽  
H. Scherm
Keyword(s):  
Microsatellite Markers ◽  
Spatial Patterns ◽  
Spatial Dynamics ◽  
Brown Rot ◽  
Fruit Rot ◽  
Monilinia Fructicola ◽  
Peach Tree ◽  
Fine Scale ◽  
Tree Canopies ◽  
Diseased Fruit

To better understand the fine-scale spatial dynamics of brown rot disease and corresponding fungal genotypes, we analyzed three-dimensional spatial patterns of pre-harvest fruit rot caused by Monilinia fructicola in individual peach tree canopies and developed microsatellite markers for canopy-level population genetics analyses. Using a magnetic digitizer, high-resolution maps of fruit rot development in five representative trees were generated, and M. fructicola was isolated from each affected fruit. To characterize disease aggregation, nearestneighbor distances among symptomatic fruit were calculated and compared with appropriate random simulations. Within-canopy disease aggregation correlated negatively with the number of diseased fruit per tree (r = −0.827, P = 0.0009), i.e., aggregation was greatest when the number of diseased fruit was lowest. Sixteen microsatellite primers consistently amplified polymorphic regions in a geographically diverse test population of 47 M. fructicola isolates. None of the test isolates produced identical multilocus genotypes, and the number of alleles per locus ranged from 2 to 16. We are applying these markers to determine fine-scale population structure of the pathogen within and among canopies. Accepted for publication 23 May 2012. Published 23 July 2012.

A synthetic approach for analyzing tropical tree spatial patterns through time

2009 ◽  
Vol 10 (1) ◽  
pp. 45-52 ◽  
Author(s):  
M. Leithead ◽  
M. Anand ◽  
L. Deeth
Keyword(s):  
Spatial Patterns ◽  
Tropical Tree ◽  
Synthetic Approach ◽  
Tree Spatial Patterns

scholarly journals Plant functional traits are correlated with species persistence in the herb layer of old-growth beech forests

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Giandiego Campetella ◽  
Stefano Chelli ◽  
Enrico Simonetti ◽  
Claudia Damiani ◽  
Sandor Bartha ◽  
...  
Keyword(s):  
Functional Traits ◽  
Resource Use ◽  
Seed Mass ◽  
Plant Functional Traits ◽  
Summer Drought ◽  
Fine Scale ◽  
Herb Layer ◽  
Beech Forests ◽  
Old Growth ◽  
Species Persistence

Abstract This paper explores which traits are correlated with fine-scale (0.25 m2) species persistence patterns in the herb layer of old-growth forests. Four old-growth beech forests representing different climatic contexts (presence or absence of summer drought period) were selected along a north–south gradient in Italy. Eight surveys were conducted in each of the sites during the period spanning 1999–2011. We found that fine-scale species persistence was correlated with different sets of plant functional traits, depending on local ecological context. Seed mass was found to be as important for the fine-scale species persistence in the northern sites, while clonal and bud-bank traits were markedly correlated with the southern sites characterised by summer drought. Leaf traits appeared to correlate with species persistence in the drier and wetter sites. However, we found that different attributes, i.e. helomorphic vs scleromorphic leaves, were correlated to species persistence in the northernmost and southernmost sites, respectively. These differences appear to be dependent on local trait adaptation rather than plant phylogenetic history. Our findings suggest that the persistent species in the old-growth forests might adopt an acquisitive resource-use strategy (i.e. helomorphic leaves with high SLA) with higher seed mass in sites without summer drought, while under water-stressed conditions persistent species have a conservative resource-use strategy (i.e. scleromorphic leaves with low SLA) with an increased importance of clonal and resprouting ability.

scholarly journals Fine-scale spatial patterns of genetic relatedness among resident adult prairie voles

2015 ◽  
Vol 96 (6) ◽  
pp. 1194-1202 ◽  
Author(s):  
Brian Keane ◽  
Shavonne Ross ◽  
Thomas O. Crist ◽  
Nancy G. Solomon
Keyword(s):  
Spatial Patterns ◽  
Genetic Relatedness ◽  
Fine Scale ◽  
Prairie Voles

Within-tree Spatial Patterns of Platynota idaeusalis (Lepidoptera: Tortricidae) on Two Apple Cultivars

1987 ◽  
Vol 16 (3) ◽  
pp. 786-790 ◽  
Author(s):  
Robert L. Meagher ◽  
Larry A. Hull
Keyword(s):  
Spatial Patterns ◽  
Platynota Idaeusalis ◽  
Apple Cultivars ◽  
Tree Spatial Patterns
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