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Falcataria moluccana; Hawaii; Metrosideros polymorpha; Psidium cattleyanum; anthropogenic activities; carbon; carbon dioxide; deforestation; ecosystems; forest stands; introduced species; invasive species; lava; primary succession; second growth; secondary succession; species diversity; stand structure; storms; trees
Abstract:
... Successional processes ultimately determine and define carbon accumulations in forested ecosystems. Although primary succession on wholly new substrate occurs across the globe, secondary succession, often following storm events or anthropogenic disturbance, is more common and is capable of globally significant accumulations of carbon (C) at a time when offsets to anthropogenic carbon dioxide (CO₂) ...
climate; climate change; ecosystems; forest dynamics; forest inventory; forestry development; landscapes; national parks; species diversity; stand development; temperature; trees; Alps region; Germany
Abstract:
... Climate change alters forest development pathways, with consequences for ecosystem services and biodiversity. As the rate of warming increases, ecosystem change is expected to accelerate. However, ecosystem dynamics can have many causes unrelated to climate (for example, disturbance and stand development legacies). The compound effects of multiple drivers remain largely unclear. Here, we assessed ...
Karen Cristina Pires da Costa; José Francisco de Carvalho Gonçalves; Alexandre Leão Gonçalves; Adamir da Rocha Nina Junior; Roberto Kirmayr Jaquetti; Vinícius Fernandes de Souza; Josiane Celerino de Carvalho; Andreia Varmes Fernandes; Joelma Keith Rodrigues; Gleisson de Oliveira Nascimento; Lúcia Helena de O. Wadt; Karen A. Kainer; Roberval Monteiro Bezerra de Lima; Flávia Camila Schimpl; Jéssica Pereira de Souza; Sabrina Silva de Oliveira; Hellen Thaís da Silva Miléo; Diego P. Souza; Ana Claudia Lopes da Silva; Heloisa Massaco Ito Nascimento; Jair Max Furtunato Maia; Francisco de Almeida Lobo; Paulo Mazzafera; Marcio Viana Ramos; Hector Henrique Ferreira Koolen; Ronaldo Ribeiro de Morais; Karina Martins; Niwton Leal Filho; Henrique Eduardo Mendonça Nascimento; Katharine Duarte Gonçalves; Yasmin Verçosa Kramer; Giordane Augusto Martins; Marcelo O. Rodrigues
Bertholletia excelsa; Brazil nuts; agroforestry; dominant species; ecophysiology; ecosystems; forests; fruits; genetic variation; growth performance; nutrient availability; phenotypic variation; physiological state; population structure; silviculture; social welfare; tree growth; trees; Amazonia
Abstract:
... PURPOSE OF THE REVIEW: The Brazil nut tree (Bertholletia excelsa) is a symbolic tree in the Brazilian Amazonian. In a broad sense, it plays a crucial role in its social, economic, and environmental importance. This species contributes on a large scale to the equilibrium of the biological processes related to the biogeochemical cycles in the Amazon biome, and its nuts sustain a multi-million-dollar ...
... 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 ...
aboveground biomass; allometry; ecosystems; shrubs; specific gravity; tree and stand measurements; trees; vegetation; Madagascar
Abstract:
... Xerophytic thicket (XT) is a shrubby vegetation found in the semi-arid southern and south-western Madagascar. Above ground biomass (AGB) is a key element to understand how this ecosystem is operating and then to design and implement any sustainable management strategy. This study aimed to build AGB allometric models for Malagasy XT shrubs. One hundred and ninety-eight individuals belonging to 20 X ...
Robinia pseudoacacia; Suaeda salsa; Tamarix chinensis; clay; data collection; ecosystems; grasses; pH; porosity; prediction; principal component analysis; river deltas; silt; soil density; soil depth; soil organic carbon; soil quality; trees; wetlands; China; Yellow River
Abstract:
... Assessment of soil quality in different vegetation types of wetland ecosystems is essential for soil functioning, such as nutrient cycling and vegetation growth, particularly the maintenance of wetland ecosystem sustainability. Wetland degradation can extremely influence soil quality. However, prediction of soil quality in terms of soil quality index in wetland soils remains obscure. In this study ...
... In this study, we combined virtual reality and electroencephalogram (EEG) methods in a lab setting to evaluate the restorative effects of forests on the mental state. In doing so, we compared forests in different vegetative seasons, varying types of forest stands, and forest densities. Twenty participants were exposed to videos of forests with different tree species compositions and cover densitie ...
Victor Pereira de Oliveira; Walmer Bruno Rocha Martins; Julia Isabella de Matos Rodrigues; Arystides Resende Silva; José do Carmo Alves Lopes; João Fernandes de Lima Neto; Gustavo Schwartz
Clitoria fairchildiana; Inga edulis; Tachigali; ecosystems; kaolin; pH; principal component analysis; soil; soil degradation; soil quality; toxicity; trees; variance; Amazonia
Abstract:
... Mining contributes to the global economy on different scales and plays a fundamental role in the development of the goods and services sectors. However, the negative impacts caused by the activity are unavoidable, as they intensely degrade soil structures and modify landscapes. The use of native tree species has been effective in restoring the structure and functions of post-mining ecosystems in t ...
agroforestry; ecosystems; forest conservation; nonindustrial private forests; protection forests; regression analysis; social forestry; surveys; trees; villages; Indonesia
Abstract:
... This study empirically assessed Social Forestry program implementation in Simancuang Village Forest or locally known as Hutan Nagari (HN) Simancuang in West Sumatra, Indonesia. We performed two analyses using primary and secondary data, namely propensity score matching to estimate the effects of the enactment of HN Simancuang in 2012 on forest cover loss and ordinal logistic regression (OLR) to pr ...
Landsat; Nothofagus antarctica; climate; ecosystems; national parks; phenology; remote sensing; spatial data; spring; summer; temperature; time series analysis; trees; vegetation index; winter; Argentina; Chile
Abstract:
... The Araucaria-Nothofagus forests are a unique ecosystem in temperate rainforests of Chile and Argentina. They include red-listed species and have a high cultural importance for the ancestral population and thus require continuous monitoring to support conservation. Monitoring of phenology by satellite observations is a key tool to quantify the impact of climate variability on terrestrial vegetatio ...
Syzygium cumini; Tectona grandis; aboveground biomass; allometry; biodiversity; biomass production; botanical gardens; carbon; carbon sequestration; carbon sinks; carboxylation; climate; climate change; decision making; ecoregions; ecosystems; growth performance; hydrologic cycle; indigenous species; introduced species; landscapes; leaf area index; nondestructive methods; photosynthesis; research institutions; stomatal conductance; tree and stand measurements; tree height; trees; tropical plants; urban forestry; water use efficiency; India
Abstract:
... Urban, peri urban and patch forests play a critical role in climate change mitigation through increased carbon storage and for that, it is imperative to assess the species response in an eco-region to recommend a potentially higher carbon sequestering species. In urban settings, green spaces, in particular, trees play a vital role in preserving biodiversity, reducing the impact of urban heat islan ...
... The land use sector currently represents ∼25% of the global greenhouse gas emissions, thus this human activity is having a huge impact on climate change. Semi-arid climate areas, which are widely distributed, are particularly influenced by such climate change. In these areas, land use changes have transformed the entire landscape and increased the greenhouse gas emissions. However, in semi-arid cl ...
altitude; canopy; canopy height; digital elevation models; ecosystems; ice; lidar; probability; trees; tropical forests; French Guiana
Abstract:
... The Global Ecosystem Dynamics Investigation (GEDI), specifically designed to measure vertical forest structures, has acquired, since April 2019, more than 35 billion waveforms of Earth’s surface on a nearly global scale. GEDI is equipped with 3 identical 1064 nm lasers with a power of 10 mJ per shot, where 1 laser is split into 2 lasers, resulting in two 5 mJ coverage lasers and two 10 mJ full-pow ...
... Rock weathering and biological cycling hold the development and sustainability of continental ecosystems, yet the interdependence of macro- and micro-nutrients biogeochemical cycles and their implications for ecosystem functioning remains unclear, despite being of particular importance in the context of global changes. This study focuses on the stocks, fluxes and processes constituting the biogeoc ...
Cecropia; Cordia alliodora; Odontotaenius; altitude; ecosystems; entomology; habitats; national parks; species richness; surveys; trees; tropical montane cloud forests; El Salvador
Abstract:
... Bess beetle species tend to be endemic and are useful indicators for the designation of conservation areas. However, little is known about the diversity and distribution of these beetles in El Salvador. Here, we present results from a study testing if species segregated along the altitudinal gradient of Montecristo National Park, El Salvador. The survey was done between September and December 2015 ...
Pinus tabuliformis; arid lands; canopy; ecosystems; forests; leaf water potential; sap flow; soil water; solar radiation; stomatal movement; transpiration; trees; urban areas; vapor pressure deficit; water stress; wind speed; China
Abstract:
... Urban trees and forests provide multiple ecosystem services for urban dwellers. However, forest water use for these benefits has become one of the critical concerns in dryland regions where water is limited. Negative forest water use impacts could be reduced by selecting tree species with low rates of transpiration. However, the possible changes of urban tree transpiration and its biophysical cont ...
... Oil and gas exploration has resulted in over 300,000 km of linear disturbances, known as seismic lines, throughout boreal peatlands across Canada. Sites are left with altered hydrologic and topographic conditions that prevent tree re-establishment. Restoration efforts have concentrated on tree recovery through mechanical mounding to re-create microtopography and support planted tree seedlings to b ...
Javadian Mostafa; Smith William K.; Lee Kangsan; Knowles John F.; Scott Russell L.; Fisher Joshua B.; Moore David J. P.; Barron-Gafford Greg; Behrangi Ali
air temperature; canopy; coniferous forests; ecosystems; eddy covariance; evaporation; geophysics; reflectance; research; sap flow; satellites; soil; stomatal movement; transpiration; tree height; trees; unmanned aerial vehicles; water stress; Arizona
Abstract:
... Plant canopy temperature (Tc) is partly regulated by evaporation and transpiration from the canopy surface and can be used to infer changes in stomatal regulation and vegetation water stress. In this study, we used a thermal Unmanned Aircraft Systems (UAS) in conjunction with eddy covariance, sap flow, and spectral reflectance data to assess the diurnal characteristics of Tc and water stress statu ...
... Carbon (C) exuded via roots is proposed to increase under drought and facilitate important ecosystem functions. However, it is unknown how exudate quantities relate to the total C budget of a drought‐stressed tree, that is, how much of net‐C assimilation is allocated to exudation at the tree level. We calculated the proportion of daily C assimilation allocated to root exudation during early summer ...
... Humans influence desert ecosystem structure and function by transforming native vegetation into agricultural and non‐agricultural land. However, how different land uses in desert grasslands affect soil phosphorus (P) fractions with varying lability by creating distinct soil physicochemical and microbial properties remains poorly understood. To address this question, a field study was conducted in ...