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1. 3D modeling of laser-scanned trees based on skeleton refined extraction

Author:
Jintao Li; Hangbin Wu; Zhihua Xiao; Huaqing Lu
Source:
International journal of applied earth observation and geoinformation 2022 v.112 pp. 102943
ISSN:
1569-8432
Subject:
allometry; data collection; models; skeleton; spatial data; standard deviation; trees
Abstract:
... Laser point cloud provides a high-precision data source for the 3D model reconstruction of existing trees. However, due to the complexity of tree structure and the data missing of point cloud, it is difficult to reconstruct complete, detailed and accurate 3D tree models from discrete points, especially the points are incomplete due to single-view scanning. To this end, a new point cloud driven met ...
DOI:
10.1016/j.jag.2022.102943

2. ACGCA: An R package for simulating tree growth and mortality based on functional traits

Author:
Michael Fell; Jarrett Barber; Kiona Ogle
Source:
Ecological informatics 2022 v.69 pp. 101605
ISSN:
1574-9541
Subject:
algorithms; allometry; canopy gaps; carbon; light intensity; models; mortality; photosynthesis; tree growth; trees
Abstract:
... The Allometrically Constrained Growth and Carbon Allocation (ACGCA) model is an individual-based model of tree growth and mortality, and it is a unique tool for investigating how tree functional traits influence growth and mortality. Several studies have used the ACGCA model to investigate tree traits, but the model is not readily accessible to the wider scientific community. Thus, we developed an ...
DOI:
10.1016/j.ecoinf.2022.101605

3. The ACVIM consensus statement definition of left ventricular enlargement in myxomatous mitral valve disease does not always represent left ventricular enlargement

Author:
M. Rishniw; D. Brown
Source:
Journal of veterinary cardiology 2022 v.42 pp. 92-102
ISSN:
1760-2734
Subject:
adults; allometry; dogs; echocardiography; regression analysis
Abstract:
... To determine how frequently the current criteria for left ventricular enlargement in dogs misclassify healthy dogs as having left ventricular enlargement; to examine the effect of breed on diastolic left ventricular normalized dimensions (LVIDDN); to propose appropriate scaling exponents and reference limits for dogs. Echocardiographic data from 1,124 healthy adult dogs, including 454 dogs weighin ...
DOI:
10.1016/j.jvc.2022.06.004

4. Above and belowground woody-biomass and carbon stock estimations at Kunzila watershed, Northwest Ethiopia

Author:
Hailu Shiferaw; Tibebu Kassawmar; Gete Zeleke
Source:
Trees, forests and people 2022 v.7 pp. 100204
ISSN:
2666-7193
Subject:
aesthetics; algorithms; allometry; carbon; carbon dioxide; carbon sinks; ecosystems; shrubs; topography; trees; vegetation cover; watersheds; woody biomass; woody plants; Ethiopia
Abstract:
... Woody-biomass is an important indicator for good vegetation cover, and a healthy environment that provides ecosystems services such as supplying, provisioning, regulating, esthetic, and cultural values. Moreover, woody-biomass stores a very good amount of carbon dioxide as about fifty percent of living organisms are built from carbon. The objective of this study is to estimate the above and belowg ...
DOI:
10.1016/j.tfp.2022.100204

5. Above- and belowground biomass allocation and its regulation by plant density in six common grassland species in China

Author:
Yuanfeng Sun; Yupin Wang; Zhengbing Yan; Luoshu He; Suhui Ma; Yuhao Feng; Haojie Su; Guoping Chen; Yinping Feng; Chengjun Ji; Haihua Shen; Jingyun Fang
Source:
Journal of plant research 2022 v.135 no.1 pp. 41-53
ISSN:
0918-9440
Subject:
allometry; belowground biomass; carbon; carbon sinks; dry matter partitioning; grasslands; greenhouses; intraspecific competition; plant density; research; root shoot ratio; species diversity; China
Abstract:
... Above- and belowground biomass allocation is an essential plant functional trait that reflects plant survival strategies and affects belowground carbon pool estimation in grasslands. However, due to the difficulty of distinguishing living and dead roots, estimation of biomass allocation from field-based studies currently show large uncertainties. In addition, the dependence of biomass allocation o ...
DOI:
10.1007/s10265-021-01353-w

6. Above-ground biomass models for dominant trees species in cacao agroforestry systems in Talamanca, Costa Rica

Author:
Hernán J. Andrade; Milena Segura; Eduardo Somarriba
Source:
Agroforestry systems 2022 v.96 no.4 pp. 787-797
ISSN:
0167-4366
Subject:
Bayesian theory; Citrus aurantiifolia; Cordia alliodora; Mammea americana; Mangifera indica; Nephelium lappaceum; Persea americana; Spondias mombin; Theobroma cacao; aboveground biomass; agroforestry; allometry; carbon; carbon sequestration; databases; fruits; leaves; specific gravity; Costa Rica
Abstract:
... Tree biomass allometric models are essential to estimate biomass, carbon sequestration and nutrient cycling in cacao agroforestry systems and other land uses with woody perennial species. A total of 34 trees of Cordia alliodora, 74 trees of Theobroma cacao and 38 trees of eight fruit species (Inga spp., Citrus aurantifolia, C. sinensis, Spondias mombin, Nephelium lappaceum, Persea americana, Mamme ...
DOI:
10.1007/s10457-022-00741-y

7. Aboveground Biomass Models in the Combretum-Terminalia Woodlands of Ethiopia: Testing Species and Site Variation Effects

Author:
Amsalu Abich; Mesele Negash; Asmamaw Alemu; Temesgen Gashaw
Source:
Land 2022 v.11 no.6 pp. -
ISSN:
2073-445X
Subject:
aboveground biomass; allometry; carbon; carbon sequestration; land; model validation; tree and stand measurements; trees; uncertainty; wood density; Ethiopia
Abstract:
... The Combretum-Terminalia woodlands and wooded grasslands (CTW) are widely distributed in East Africa. While these landscapes may have the potential to act as key global carbon sinks, relatively little is known about their carbon storage capacity. Here we developed a set of novel aboveground biomass (AGB) models and tested for species and site variation effects to quantify the potential for CTW to ...
DOI:
10.3390/land11060811

8. Aboveground biomass allocation and additive allometric models of fifteen tree species in northeast China based on improved investigation methods

Author:
Zhenzhao Xu; Wenxian Du; Guang Zhou; Lihou Qin; Shengwang Meng; Jian Yu; Zhen Sun; Bilige SiQing; Qijing Liu
Source:
Forest ecology and management 2022 v.505 pp. 119918
ISSN:
0378-1127
Subject:
Pinus koraiensis; aboveground biomass; administrative management; allometry; bark; coniferous forests; dry matter partitioning; forest ecology; leaves; model validation; models; plant development; prediction; tree and stand measurements; trees; woody plants; China
Abstract:
... Tree allometric models are crucial to accurate forest biomass assessment, but the acquisition of biomass data is one of the most important limitations in establishing biomass models. This study aims to propose an improved investigation method to quickly and practically obtain biomass data, establish species-specific allometric equations and evaluate the biomass allocation pattern for various tree ...
DOI:
10.1016/j.foreco.2021.119918

9. Aboveground biomass allometric models for large trees in southwestern Amazonia

Author:
Flora Magdaline Benitez Romero; Laércio Antônio Gonçalves Jacovine; Carlos Moreira Miquelino Eleto Torres; Sabina Cerruto Ribeiro; Samuel José Silva Soares da Rocha; Thais de Nazaré Oliveira Novais; Ricardo de Oliveira Gaspar; Liniker Fernandes da Silva; Edson Vidal; Helio Garcia Leite; Christina Lynn Staudhammer; Philip Martin Fearnside
Source:
Trees, forests and people 2022 pp. 100317
ISSN:
2666-7193
Subject:
aboveground biomass; allometry; carbon; carbon dioxide; carbon sinks; durability; forest management; forests; researchers; tree and stand measurements; tree height; tree trunk; wood; wood density; Amazonia
Abstract:
... Most of the basal area in Amazon forest is in large trees, many of which are species of interest for forest management. In forest management these trees are divided into the commercial bole that is harvested for wood production and the stump and crown that are left in the forest where they decompose and emit CO₂ over a period of years. Part of the commercial bole is converted to wood products that ...
DOI:
10.1016/j.tfp.2022.100317

10. Aboveground biomass equations for black willow (Salix nigra Marsh.) and eastern cottonwood (Populus deltoides Bartr. ex Marsh.)

Author:
Bini Dahal; Krishna P. Poudel; Heidi J. Renninger; Joshua J. Granger; Theodor D. Leininger; Emile S. Gardiner; Ray A. Souter; Randall J. Rousseau
Source:
Trees, forests and people 2022 v.7 pp. 100195
ISSN:
2666-7193
Subject:
Populus deltoides subsp. deltoides; Salix nigra; aboveground biomass; allometry; bioenergy; coppicing; feedstocks; forest land; models; rivers; stand age; tree and stand measurements; trees; Mississippi
Abstract:
... Black willow and eastern cottonwood are fast-growing hardwoods native to river bottoms throughout the southeastern United States, e.g., the Lower Mississippi Alluvial Valley (LMAV), that are often grown as short rotation woody crops (SRWCs) because of their potential to provide high biomass yields in short periods of time. This study focused on developing allometric equations to estimate individua ...
DOI:
10.1016/j.tfp.2022.100195

11. Acceleration as a proxy for energy expenditure in a facultative‐soaring bird: Comparing dynamic body acceleration and time‐energy budgets to heart rate

Author:
J. Morgan Brown; Willem Bouten; Kees C. J. Camphuysen; Bart A. Nolet; Judy Shamoun‐Baranes
Source:
Functional ecology 2022 v.36 no.7 pp. 1627-1638
ISSN:
0269-8463
Subject:
accelerometers; allometry; animal ecology; calibration; captive animals; energy expenditure; flight; heart rate; life history; metabolism; seabirds; surgery
Abstract:
... In animal ecology, energy expenditure is used for assessing the consequences of different behavioural strategies, life‐history events or environments. Animals can also influence energy expenditure through instantaneous behavioural responses to their external environment. It is therefore of interest to measure energy expenditure of free‐ranging animals across seasons and at high temporal resolution ...
DOI:
10.1111/1365-2435.14055

12. Accommodating heteroscedasticity in allometric biomass models

Author:
Ioan Dutcă; Ronald E. McRoberts; Erik Næsset; Viorel N.B. Blujdea
Source:
Forest ecology and management 2022 v.505 pp. 119865
ISSN:
0378-1127
Subject:
aboveground biomass; administrative management; allometry; forest ecology; forests; heteroskedasticity; prediction; tree and stand measurements; tree height; trees; uncertainty; variance
Abstract:
... Allometric models are commonly used to predict forest biomass. These models typically take nonlinear power-law forms that predict individual tree aboveground biomass (AGB) as functions of diameter at breast height (D) and/or tree height (H). Because the residual variance is in most cases heteroscedastic, accommodating the heteroscedasticity (i.e., heterogeneity of variance) becomes necessary when ...
DOI:
10.1016/j.foreco.2021.119865

13. Activity, heart rate, and energy expenditure of a cold-climate mesocarnivore, the Canada lynx (Lynx canadensis)

Author:
Allyson K. Menzies; Emily K. Studd; Jacob L. Seguin; Rachael E. Derbyshire; Dennis L. Murray; Stan Boutin; Murray M. Humphries
Source:
Canadian journal of zoology 2022 v.100 no.4 pp. 261-272
ISSN:
1480-3283
Subject:
Lynx canadensis; allometry; body size; carnivores; cold; energy expenditure; environmental factors; heart rate; snow; sympatry
Abstract:
... The energetic consequences of body size, behaviour, and fine-scale environmental variation remain understudied, particularly among free-ranging carnivores, due to logistical and methodological challenges of studying them in the field. Here, we present novel activity, heart rate, and metabolic data on free-ranging Canada lynx (Lynx canadensis Kerr, 1792) to (i) investigate intraspecific patterns of ...
DOI:
10.1139/cjz-2021-0142

14. Adapting a Quercus robur allometric equation to quantify carbon sequestration rates on the Middle Elbe floodplain

Author:
Heather Alyson Shupe; Kai Jensen; Kristin Ludewig
Source:
MethodsX 2022 v.9 pp. 101800
ISSN:
2215-0161
Subject:
Quercus robur; allometry; carbon; carbon sequestration; carbon sinks; equations; floodplains; tree and stand measurements; tree height; trees
Abstract:
... Destructively sampling old Pedunculate oak (Quercus robur) trees on the active floodplain of the Middle Elbe to create an allometric equation to estimate carbon stocks (CS) and carbon sequestration rates (CSR) would defeat the purpose of protecting increasingly vulnerable and threatened primeval floodplain forests. To nondestructively estimate CS and CSR, we have adapted a two-parameter allometric ...
DOI:
10.1016/j.mex.2022.101800

15. Adaptive Strategies of Seedlings of Four Mediterranean Co-Occurring Tree Species in Response to Light and Moderate Drought: A Nursery Approach

Author:
Marta Pardos; Rafael Calama
Source:
Forests 2022 v.13 no.2 pp. -
ISSN:
1999-4907
Subject:
Juniperus thurifera; Pinus pinea; Quercus faginea; Quercus ilex; allometry; biomass; codominance; drought; drought tolerance; dry matter partitioning; forests; photosystem II; seedling growth; stomatal conductance; trees; water potential
Abstract:
... In Mediterranean environments, light and water are clearly dominant ecological drivers of seedling growth and survival, and their interaction could modify productivity and forest composition. We examine the early response of seedlings of four co-occurring Mediterranean tree species (Pinus pinea, Juniperus thurifera, Quercus ilex and Quercus faginea) grown in the nursery to differing light and wate ...
DOI:
10.3390/f13020154

16. Addressing uncertainty and bias in land use, land use change, and forestry greenhouse gas inventories

Author:
Emily McGlynn; Serena Li; Michael F. Berger; Meredith Amend; Kandice L. Harper
Source:
Climatic change 2022 v.170 no.1-2 pp. 5
ISSN:
0165-0009
Subject:
United Nations Framework Convention on Climate Change; allometry; biomass; carbon dioxide; carbon sequestration; carbon sinks; case studies; climate change; cropland; ecological models; forestry; grasslands; greenhouse gas emissions; greenhouse gases; inventories; land use change; mineral soils; soil carbon; specific gravity; trees; uncertainty; wetland soils
Abstract:
... National greenhouse gas inventories (NGHGIs) will play an increasingly important role in tracking country progress against United Nations (UN) Paris Agreement commitments. Yet uncertainty in land use, land use change, and forestry (LULUCF) NGHGHI estimates may undermine international confidence in emission reduction claims, particularly for countries that expect forests and agriculture to contribu ...
DOI:
10.1007/s10584-021-03254-2

17. Advances in the estimations and applications of critical nitrogen dilution curve and nitrogen nutrition index of major cereal crops. A review

Author:
Xinyu Li; Syed Tahir Ata-UI-Karim; Yue Li; Fei Yuan; Yuxin Miao; Kato Yoichiro; Tao Cheng; Liang Tang; Xingshuai Tian; Xiaojun Liu; Yongchao Tian; Yan Zhu; Weixing Cao; Qiang Cao
Source:
Computers and electronics in agriculture 2022 v.197 pp. 106998
ISSN:
0168-1699
Subject:
agriculture; allometry; biomass production; corn; electronics; genotype; grain yield; nitrogen; nutrient use efficiency; nutritional status; plant growth; prediction; rice; wheat
Abstract:
... Nitrogen (N) is one of the decisive elements for plant growth, crop biomass accumulation, and yield formation of cereal crops. However, managing N in crop production and comparing N use efficiency are challenging without prior knowledge of in-season crop N status. The development of critical N (Nc) dilution curves based on allometry between plant metabolic and structural compartments allows the es ...
DOI:
10.1016/j.compag.2022.106998

18. Age, growth, and sexual dimorphism of the Southern Hemisphere long-finned pilot whale (Globicephala melas edwardii)

Author:
Emma L. Betty; Karen A. Stockin; Bethany Hinton; Barbara A. Bollard; Adam N.H. Smith; Mark B. Orams; Sinéad Murphy
Source:
Journal of mammalogy 2022 v.103 no.3 pp. 560-575
ISSN:
0022-2372
Subject:
Globicephala melas; allometry; coasts; females; growth models; longevity; males; mammalogy; mortality; regression analysis; sexual dimorphism; sexual maturity; social behavior; tail; New Zealand
Abstract:
... Knowledge of population biological parameters can contribute to assessing the resilience of a population in the face of increasing anthropogenic pressures. Southern Hemisphere long-finned pilot whales (Globicephala melas edwardii) are susceptible to high rates of live stranding-related mortality. However, the biological parameters of this population largely are unknown. In this study, age, growth, ...
DOI:
10.1093/jmammal/gyab165

19. Agronomic and physiological traits associated with genetic improvement of phosphorus use efficiency of wheat grown in a purple lithomorphic soil

Author:
Hongkun Yang; Renhua Chen; Yufeng Chen; Han Li; Ting Wei; Wei Xie; Gaoqiong Fan
Source:
crop journal 2022 v.10 no.4 pp. 1151-1164
ISSN:
2214-5141
Subject:
allometry; cultivars; evapotranspiration; flowering; genetic improvement; genetic variation; grain yield; phosphorus; photosynthesis; phytomass; seeds; sucrose; surface area; topsoil; wheat; China
Abstract:
... Developing wheat that acquires and uses phosphorus (P) more efficiently is a promising and low-cost solution for increasing grain yield and reducing P-related environmental impacts. The present study identified agronomic and physiological traits that contribute to genetic variation in the P acquisition, remobilization, and utilization efficiency of 11 wheat cultivars from southwest China grown in ...
DOI:
10.1016/j.cj.2021.11.010

20. Agronomic qualities of Pennisetum clandestinum in association with Acacia koa for the mitigation of the effects of ranching and promotion of conservation in a silvopastoral context on the island of Maui, Hawaii

Author:
George Akau; Guillermo Detlefsen; Alejandro Imbach; Torey Jenkins; Cristóbal Villanueva
Source:
Agroecology and sustainable food systems 2022 v.46 no.7 pp. 1047-1074
ISSN:
2168-3573
Subject:
Acacia koa; Cenchrus clandestinus; Maui; agroecology; agroforestry; allometry; aquifers; biodiversity; biomass; canopy; carbon; cattle; computer software; diagnostic techniques; dry season; ecosystems; fauna; flora; forage evaluation; forage grasses; forage quality; forests; habitats; indigenous species; invasive species; keystone species; leaf area index; nitrogen fixation; protocols; reforestation; trees; wet season
Abstract:
... Upper-elevation mesic Hawaiian forests have been transformed by cattle ranching and invasive ungulates within the past 200 years. Although the flora and fauna of the Hawaiian Islands have been radically altered by the introduction of invasive species, there is a movement of agriculturalists within the islands interested in reintroducing native species and reforestation in agricultural spaces. One ...
DOI:
10.1080/21683565.2022.2089940