Results 71 to 80 of about 6,795 (205)

Comparative analysis of machine learning algorithms and vegetation indices for mapping Eucalyptus tree woodlots using Sentinel‐2 imagery in the Akaki River catchments

Agrosystems, Geosciences &Environment, Volume 8, Issue 4, December 2025.
Abstract Eucalyptus trees (ETs) cover approximately 20 million ha globally, with Brazil leading at 5.6 million ha. In Africa, ET plantations span around 1.5 million ha, primarily in South Africa and Ethiopia. In Ethiopia, ET plays a key role in agroforestry, covering 506,000 ha, which represents 90% of all planted trees in the form of woodlots.
Hailegebreal Tamirat, Meron Tekalign, Mekuria Argaw, Tulu Tolla   +3 more
wiley   +1 more source

CRESCIMENTO INICIAL DE ACÁCIA-NEGRA COM VERMICOMPOSTOS DE DIFERENTES RESÍDUOS AGROINDUSTRIAIS

Ciência Florestal, 2016
The use of vermicompost as organic compounds of different agro-industrial wastes in the productionof Acacia mearnsii seedlings can be an alternative of reusing waste and increase of seedlings production. The aim of this study was to evaluate the growth
Rul Martins Antunes, Rosa Maria Vargas Castilhos, Danilo Dufch Castilho, Otávio dos Anjos Leal, Robson Andreazza   +4 more
doaj  

ANÁLISE DA MORTALIDADE DE Acacia mearnsii De Wild.

Ciência Florestal, 2005
A mortalidade de povoamentos de Acacia mearnsii De Wild. foi estudada tomando por base parcelas permanentes estratificadas em diferentes espaçamentos e sítios. Os resultados permitiram concluir que a probabilidade de mortalidade (PM) pode ser estimada por meio de uma função probabilística em relação ao inverso do diâmetro à altura do peito (d) e da ...
Schneider, Paulo Renato, Fortes, Fabiano de Oliveira, Souza, Luis Henrique da Silva, Lúcio, Alessandro Dal’Col, Finger, César Augusto Guimarães, Schneider, Paulo Sérgio Pigatto   +5 more
openaire   +3 more sources

Hypsometrical Relation for Acacia mearnsii with Different Ages

, 2002
This work had as objective to select mathematical models to predict the height of trees in function of DBH and age, in black wattle stands, Acacia mearnsii De Wild., in Southeastern region of the State of Rio Grande do Sul, Brazil. For the adjustment of the height data 19 mathematical equations were tested, being used arithmetic and logarithmic linear ...
Caldeira, Marcos Vinicius Winckler, Schumacher, Mauro Valdir, Scheeren, Luciano Weber, Barichello, Leonir Rodrigues, Watzlawick, Luciano Farinha   +4 more
openaire   +2 more sources

Biological invasions: a global assessment of geographic distributions, long‐term trends, and data gaps

Biological Reviews, Volume 100, Issue 6, Page 2542-2583, December 2025.
ABSTRACT Biological invasions are one of the major drivers of biodiversity decline and have been shown to have far‐reaching consequences for society and the economy. Preventing the introduction and spread of alien species represents the most effective solution to reducing their impacts on nature and human well‐being.
Hanno Seebens, Laura A. Meyerson, David M. Richardson, Bernd Lenzner, Elena Tricarico, Franck Courchamp, Alla Aleksanyan, Emre Keskin, Hanieh Saeedi, Perpetra Akite, Jake M. Alexander, Sarah A. Bailey, Dino Biancolini, Tim M. Blackburn, Hans Juergen Boehmer, Alejandro Bortolus, Marc W. Cadotte, César Capinha, James T. Carlton, Jo Anne Crouch, Curtis C. Daehler, Franz Essl, Llewellyn C. Foxcroft, Jason D. Fridley, Nicol Fuentes, Mirijam Gaertner, Bella Galil, Emili García‐Berthou, Pablo García‐Díaz, Sylvia Haider, Liam Heneghan, Kevin A. Hughes, Cang Hui, Ekin Kaplan, Andrew M. Liebhold, Chunlong Liu, Elizabete Marchante, Hélia Marchante, Alicia Marticorena, David W. Minter, Rodrigo A. Moreno, Wolfgang Nentwig, Aidin Niamir, Ana Novoa, Ana L. Nunes, Aníbal Pauchard, Sebataolo Rahlao, Anthony Ricciardi, James C. Russell, K.V. Sankaran, Anna Schertler, Evangelina Schwindt, Ross T. Shackleton, Daniel Simberloff, David L. Strayer, Alifereti Tawake, Marco Thines, Cristóbal Villaseñor‐Parada, Jean Ricardo Simões Vitule, Viktoria Wagner, Victoria Werenkraut, Karsten Wesche, Demian A. Willette, Rafael D. Zenni, Petr Pyšek   +64 more
wiley   +1 more source

Produtividade energética de espécies florestais em plantios de curta rotação

Ciência Rural, 2015
This study aimed to determine the energy productivity of the different compartments of above ground biomass of forest species: Acacia mearnsii De Wild, Eucalyptus grandis W. Hill ex Maiden, Mimosa scabrella Benth and Ateleia glazioviana Baill distributed
Elder Eloy, Braulio Otomar Caron, Dimas Agostinho da Silva, Velci Queiróz de Souza, Rômulo Trevisan, Alexandre Behling, Elvis Felipe Elli   +6 more
doaj   +1 more source

Mechanisms and Impact of Acacia mearnsii Invasion

Diversity
Acacia mearnsii De Wild. has been introduced to over 150 countries for its economic value. However, it easily escapes from plantations and establishes monospecific stands across plains, hills, valleys, and riparian habitats, including protected areas such as national parks and forest reserves. Due to its negative ecological impact, A. mearnsii has been
Hisashi Kato-Noguchi, Midori Kato
openaire   +1 more source

Effects of aging, climatic, physical factors, and site on quality parameters of the bark of black wattle (Acacia mearnsii de Wild.)

Biofuels, Bioproducts and Biorefining, Volume 19, Issue 6, Page 1931-1947, November/December 2025.
Abstract Black wattle (Acacia mearnsii De Wild.) is a key tree crop in South Africa, valued for its bark and timber, both of which contribute significantly to export revenue. Wattle bark harvesting begins with the rainy season in September and extends to May. During this time, harvested bark is transported to three processing facilities.
P. Avadianund Bridglall, M. L. Laing, C. Morris, R. J. Burgdorf   +3 more
wiley   +1 more source

Effect of age and spacing on biomass production in forest plantations

Revista Árvore, 2018
The aim of this study was to determine the effect of age and plant spacing on biomass production of four forestry tree species: Acacia mearnsii De Wild, Eucalyptus grandis W. Hill ex Maiden, Mimosa scabrella Benth, and Ateleia glazioviana Baill.
Elder Eloy, Dimas Agostinho da Silva, Braulio Otomar Caron, Elvis Felipe Elli, Felipe Schwerz   +4 more
doaj   +1 more source

Adubação fosfatada e potássica em plantios de Acacia mearnsii De Wild. (acácia-negra). [PDF]

, 2015
Acacia mearnsii é a terceira espécie florestal mais plantada no Brasil distribuída especialmente em minifúndios, no estado do Rio Grande do Sul. A espécie possui ampla utilização, destacando-se a produção de tanino extraído da casca das árvores e a de ...
ANDRADE, G. de C., BELLOTE, A. F. J., FERREIRA, C. A., SILVA, H. D. da   +3 more
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