Nest groups of wild bonobos at Wamba: selection of vegetation and tree species and relationships between nest group size and party size

2010 ◽  
pp. n/a-n/a
Author(s):  
Mbangi N. Mulavwa ◽  
Kumugo Yangozene ◽  
Mikwaya Yamba-Yamba ◽  
Balemba Motema-Salo ◽  
Ndunda N. Mwanza ◽  
...  
Keyword(s):  
Group Size ◽  
Tree Species ◽  
Party Size ◽  
Nest Group ◽  
Selection Of

scholarly journals Selection of the assortment of trees for protective forest plantations

2020 ◽  
Author(s):  
A.I. Petelko ◽  
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Effective Means ◽  
Water Erosion ◽  
Current Status ◽  
Forest Plantations ◽  
Forest Stands ◽  
Protective Forest ◽  
Selection Of ◽  
Hydrographic Network

Reclamation of land on community land funds and the hydrographic network contributes to the most effective means of protecting the soil from water erosion. However, the condition, growth, and productivity of the protective forest stands themselves depend on the species composition. Many years of studies have clearly shown that not all tree species and shrubs can successfully grow on washed soils. Extensive scientific material provides a description of the growth and current status of the studied species, a detailed taxation description of the forest plantations. Of particular value are those species that can grow on eroded lands and protect the soil from erosion.

scholarly journals Individual tree crown delineation and tree species classification with hyperspectral and LiDAR data

PeerJ ◽  
2019 ◽  
Vol 6 ◽  
pp. e6227 ◽  
Author(s):  
Michele Dalponte ◽  
Lorenzo Frizzera ◽  
Damiano Gianelle
Keyword(s):  
Remote Sensing ◽  
Tree Species ◽  
Data Science ◽  
Remote Sensing Data ◽  
Tree Crown ◽  
Species Classification ◽  
Individual Tree ◽  
Sensing Data ◽  
Tree Species Classification ◽  
Selection Of

An international data science challenge, called National Ecological Observatory Network—National Institute of Standards and Technology data science evaluation, was set up in autumn 2017 with the goal to improve the use of remote sensing data in ecological applications. The competition was divided into three tasks: (1) individual tree crown (ITC) delineation, for identifying the location and size of individual trees; (2) alignment between field surveyed trees and ITCs delineated on remote sensing data; and (3) tree species classification. In this paper, the methods and results of team Fondazione Edmund Mach (FEM) are presented. The ITC delineation (Task 1 of the challenge) was done using a region growing method applied to a near-infrared band of the hyperspectral images. The optimization of the parameters of the delineation algorithm was done in a supervised way on the basis of the Jaccard score using the training set provided by the organizers. The alignment (Task 2) between the delineated ITCs and the field surveyed trees was done using the Euclidean distance among the position, the height, and the crown radius of the ITCs and the field surveyed trees. The classification (Task 3) was performed using a support vector machine classifier applied to a selection of the hyperspectral bands and the canopy height model. The selection of the bands was done using the sequential forward floating selection method and the Jeffries Matusita distance. The results of the three tasks were very promising: team FEM ranked first in the data science competition in Task 1 and 2, and second in Task 3. The Jaccard score of the delineated crowns was 0.3402, and the results showed that the proposed approach delineated both small and large crowns. The alignment was correctly done for all the test samples. The classification results were good (overall accuracy of 88.1%, kappa accuracy of 75.7%, and mean class accuracy of 61.5%), although the accuracy was biased toward the most represented species.

scholarly journals  Molecular markers: their use in tree improvement

2012 ◽  
Vol 58 (No. 3) ◽  
pp. 137-144 ◽  
Author(s):  
R. Mahajan ◽  
P. Gupta
Keyword(s):  
Molecular Markers ◽  
Tree Species ◽  
Cell Biology ◽  
Genetic Linkage ◽  
Morphological Characteristics ◽  
Phenotypic Selection ◽  
Tree Improvement ◽  
Linkage Maps ◽  
Genetic Linkage Maps ◽  
Selection Of

Earlier breeders used phenotypic selection based on morphological characteristics to improve tree varieties. These selections often take many cycles of breeding and backcrossing in order to place desired characteristics. But today the knowledge has paved the way for a much deeper understanding of the mechanics of cell biology and the hereditary process itself. Breeders are presented with numerous possibilities of altering the behaviour of existing varieties. Linkage between molecular markers can be translated to genetic linkage maps, which have become an important tool in plant genetics. They may choose to use marker-assisted approaches in order to facilitate the selection of favourable combinations of genes that occur naturally within a tree species.  

scholarly journals Successional loss of two key food tree species best explains decline in group size of Panamanian howler monkeys ( Alouatta palliata )

Biotropica ◽  
2019 ◽  
Vol 51 (4) ◽  
pp. 600-614 ◽  
Author(s):  
Katharine Milton ◽  
David W. Armitage ◽  
Wayne P. Sousa
Keyword(s):  
Group Size ◽  
Tree Species ◽  
Alouatta Palliata ◽  
Howler Monkeys

Selection of Forest Tree Species in Rhodesia

1976 ◽  
Vol 98 (1) ◽  
pp. 16-20
Author(s):  
R. D. Barnes ◽  
L. J. Mullin
Keyword(s):  
Tree Species ◽  
Forest Tree ◽  
Forest Tree Species ◽  
Selection Of

Use of wood in Yampil Barrow Complex funerary rituals IV-II mill. BC

2017 ◽  
Vol 22 (1) ◽  
pp. 126-165
Author(s):  
Tomasz Stępnik ◽  
Marzena Szmyt ◽  
Danuta Żurkiewicz
Keyword(s):  
Iron Age ◽  
Tree Species ◽  
Funerary Rituals ◽  
Selection Of ◽  
Catacomb Culture

Abstract This article presents the results of analyses of relics made out of wood that were discovered during the investigation of the Yampil Barrow Complex (Ukraine, Vinnitsa Oblast) in the period 2010-2015 in respect to the graves of Eneolithic communities, Yamnaya culture, Catacomb culture, Noua culture and the Iron Age. The research has documented a process of the selection of wood used in funerary rituals in the 4th to 2nd mill. BC and the choice of tree species present in stenothermal climax forests (Quercus sp., Fraxinus sp.).

Selection of Tree Species and Soil Management for Simultaneous Fuelwood Production and Soil Rehabilitation in the Ethiopian Central Highlands

2014 ◽  
Vol 26 (7) ◽  
pp. 665-679 ◽  
Author(s):  
Mehari A. Tesfaye ◽  
Andrés Bravo‐Oviedo ◽  
Felipe Bravo ◽  
Berhane Kidane ◽  
Kassahun Bekele ◽  
...  
Keyword(s):  
Tree Species ◽  
Soil Management ◽  
Soil Rehabilitation ◽  
Central Highlands ◽  
Selection Of

Selection of Dominant Plants at the Road Green Space in Longyan

2012 ◽  
Vol 193-194 ◽  
pp. 221-226
Author(s):  
Guo Liang Lv ◽  
Xi Jun Hu ◽  
Xu Sheng Li
Keyword(s):  
Tree Species ◽  
Green Space ◽  
Comprehensive Evaluation ◽  
Hierarchical Classification ◽  
Decisive Role ◽  
Present Situation ◽  
The Road ◽  
Green Areas ◽  
Backbone Tree ◽  
Selection Of

As liaisons between “green spots” and “green areas”, road green space in unban play a decisive role on the improvement of urban style. In this thesis, AHP is applied in the comprehensive evaluation and hierarchical classification to the 198 types of garden plants in Longyan city. Based on evaluation results and the hierarchical classification, in the light of the characteristics of road planting and the present situation of Longyan, this thesis identifies the fundamental key tree species and backbone tree species of the unban road green space in Longyan to make contributions to the planning of tree species in Longyan.

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