Seed predation patterns favor the regeneration of dominant species in forest gaps compared with the understory in an oak-pine mixed forest

2014 ◽  
Vol 59 (4) ◽  
pp. 495-502 ◽  
Author(s):  
Fei Yu ◽  
Xiaoxiao Shi ◽  
Dexiang Wang ◽  
Tao Wang ◽  
Xianfeng Yi ◽  
...  
Keyword(s):  
Seed Predation ◽  
Dominant Species ◽  
Mixed Forest ◽  
Forest Gaps

scholarly journals Effect of gap size on tree species diversity of natural regeneration – case study from Masaryk Training Forest Enterprise Křtiny

2020 ◽  
Vol 66 (No. 10) ◽  
pp. 407-419
Author(s):  
Maame Esi Hammond ◽  
Radek Pokorny ◽  
Lumír Dobrovolný ◽  
Michal Friedl ◽  
Nina Hiitola
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Natural Regeneration ◽  
Management Practice ◽  
Mixed Forest ◽  
Abies Alba ◽  
Essential Property ◽  
Gap Size ◽  
Forest Gaps ◽  
Significant Difference

Forest gaps remain the optimal forest management practice in modern forestry. Upon all the physical properties of forest gaps, the ‘gap size’ feature stands out as an essential property. The effect of gap size on tree species composition and diversity of natural regeneration in forest gaps of different sizes was investigated. Eight research forest gaps were selected from the Training Forest School Enterprise, also called Masaryk Forest in Křtiny, a temperate mixed forest in the Czech Republic. By given gap sizes, small (&lt; 700 m<sup>2</sup>) and large gaps (≥ 700 m<sup>2</sup>) were defined. Forty-one (41) regeneration microsites (RSs) of 1 m<sup>2</sup> circular area at 2 m intervals were demarcated within each forest gap. These RSs served as data collection points. From the total of eleven (11) species enumerated, large gaps obtained higher species composition (10) and diversity (Simpson = 0.5 1-D; Shannon = 1.0 H and Pielou’s evenness = 0.5 J indices) records, yet, small gaps presented favourable conditions for prolific natural regeneration significantly. Light-adapted species demonstrated no significant difference (P &gt; 0.05) between small and large gaps, however, intermediate and shade-tolerant species were significantly higher (P &lt; 0.05) in small gaps. There were progressive declines in height growth of natural regeneration from 0–20 cm to 21–50 cm and 51+ cm in small and large gaps at R<sup>2 </sup>= 99% and 88%, respectively. <br /> The development of herbaceous vegetation in small and large gaps had positive and negative effects on the natural regeneration of Fagus sylvatica and Abies alba species, respectively.

scholarly journals Individual Tree Classification Using Airborne LiDAR and Hyperspectral Data in a Natural Mixed Forest of Northeast China

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 303 ◽  
Author(s):  
Dan Zhao ◽  
Yong Pang ◽  
Lijuan Liu ◽  
Zengyuan Li
Keyword(s):  
Tree Species ◽  
Northeast China ◽  
Dominant Species ◽  
Mixed Forest ◽  
Hyperspectral Data ◽  
Airborne Lidar ◽  
Support Vector ◽  
Individual Tree ◽  
Individual Trees ◽  
Better Than

This paper proposes a method to classify individual tree species groups based on individual tree segmentation and crown-level spectrum extraction (“crown-based ITC” for abbr.) in a natural mixed forest of Northeast China, and compares with the pixel-based classification and segment summarization results (“pixel-based ITC” for abbr.). Tree species is a basic factor in forest management, and it is traditionally identified by field survey. This paper aims to explore the potential of individual tree classification in a natural, needle-leaved and broadleaved mixed forest. First, individual trees were isolated, and the spectra of individual trees were then extracted. The support vector machine (SVM) and spectrum angle mapper (SAM) classifiers were applied to classify the trees species. The pixel-based classification results from hyperspectral data and LiDAR derived individual tree isolation were compared. The results showed that the crown-based ITC classified broadleaved trees better than pixel-based ITC, while the classes distribution of the crown-based ITC was closer to the survey data. This indicated that crown-based ITC performed better than pixel-based ITC. Crown-based ITC efficiently identified the classes of the dominant and sub-dominant species. Regardless of whether SVM or SAM was used, the identification consistency relative to the field observations for the class of the dominant species was greater than 90%. In contrast, the consistencies of the classes of the sub-dominant species were approximately 60%, and the overall consistency of both the SVM and SAM was greater than 70%.

scholarly journals Niche of dominant species in arbor layer of evergreen deciduous broad-leaved mixed forest in karst hills of Guilin, southwestern China

2021 ◽  
Vol 41 (20) ◽  
Author(s):  
肖艳梅，解婧媛，姚义鹏，梁士楚，高丽娜，张惠，莫适祯 XIAO Yanmei
Keyword(s):  
Dominant Species ◽  
Mixed Forest ◽  
Southwestern China

DIVERSITY AND DISTRIBUTION OF ORIBATID MITE FAUNA(ACARI: ORIBATIDA) IN THE FOREST FLOOR OF SATKOSIA BASIPALLY WILD LIFE SANCTUARY, ODISHA, INDIA

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
SHELLEY ACHARYA ◽  
ADITI DUTTA
Keyword(s):  
Forest Floor ◽  
Dominant Species ◽  
Oribatid Mite ◽  
Soil Condition ◽  
Silica Content ◽  
Soil Mites ◽  
The Core ◽  
Humid Condition ◽  
Core Areas ◽  
Wild Life

The studies were mostly concentrated in Nine forest ranges of the WLS including the core areas. The soil of this region mostly is dry, red and with iron and silica content. Though the soil mites are prevalent in moist humid condition, we got a diversed population of 20 different species under 14 genera which is less than average probably due to the soil condition. Protoribates magnus is the dominant species in this study. The species with larger ranges were Scheloribates curvialatus.

A Different Kind of Animal

2019 ◽  
Author(s):  
Robert Boyd
Keyword(s):  
Cognitive Ability ◽  
Cultural Adaptation ◽  
Dominant Species ◽  
Large Scale ◽  
Human Beings ◽  
Unique Combination ◽  
Essential Ingredient ◽  
Princeton University

Human beings have evolved to become the most dominant species on Earth. This astonishing transformation is usually explained in terms of cognitive ability—people are just smarter than all the rest. But this book argues that culture—our ability to learn from each other—has been the essential ingredient of our remarkable success. The book shows how a unique combination of cultural adaptation and large-scale cooperation has transformed our species and assured our survival—making us the different kind of animal we are today. The book is based on the Tanner Lectures delivered at Princeton University, featuring challenging responses across the chapters.

A Study on Microorganism Dominant Species in Bench-scale Shipboard STP Using Combined SBR and MBR Process

2018 ◽  
Vol 19 (6) ◽  
pp. 550-555
Author(s):  
Young Ik Choi ◽  
Dae Yeol Shin ◽  
mansoor Sana ◽  
Min Ji Kwon ◽  
Jin Hee Jung ◽  
...  
Keyword(s):  
Dominant Species ◽  
Bench Scale
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