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Camila da Silva Goldas; Luciana Regina Podgaiski; Carolina Veronese Corrêa da Silva; Pedro Maria Abreu Ferreira; Jeferson Vizentin-Bugoni; Milton de Souza Mendonça Jr.
chronosequences, etc ; biodiversity; grasslands; pollination; pollinators; Brazil; Show all 6 Subjects
Abstract:
... Fire is a frequent disturbance in most grasslands around the world, being key for the structure and dynamics of the biodiversity in such ecosystems. While grassland species may be resilient, little is known on how plant–pollinator networks reassemble after fire. Here, we investigate the structure and dynamics of plant–pollinator networks and the variation in species roles over a 2-year post-fire c ...
chronosequences, etc ; Spartina alterniflora; coastal ecosystems; near-infrared spectroscopy; prediction; reflectance; soil quality; Show all 7 Subjects
Abstract:
... Assessment of soil quality is one of the most important issues concerning changes in coastal ecosystem services resulting from the establishment of Spartina alterniflora (S. alterniflora) marshes. Conventional recognition of soil quality involves many soil analyses that can be costly and time consuming; by contrast, visible and near-infrared spectroscopy (VNIRS) for the prediction of soil quality ...
chronosequences, etc ; boreal forests; charcoal; community structure; environment; fungi; microbial colonization; soil bacteria; soil pH; wildfires; Show all 10 Subjects
Abstract:
... Wildfire has profound and pervasive consequences for forest ecosystems via directly altering soil physicochemical properties and modulating microbial community. In this study, we examined the changes in soil properties and microbial community composition and structure at different periods after highly severe wildfire events (44 plots, 113 samples) in the Chinese Great Khingan Mountains. We also se ...
chronosequences, etc ; bees; biomass production; flowers; forbs; grasses; grasslands; habitats; indicator species; landscapes; pollination; soil; species richness; Show all 13 Subjects
Abstract:
... Grasslands are historically and evolutionarily associated with disturbances, such as fire, that drive biodiversity assembly patterns and biotic interactions. Disturbance suppression in fire‐prone ecosystems usually leads to a decline in forb diversity and flowering due to biomass accumulation, which could jeopardise pollinator diversity. In this study, we investigated patterns and drivers of plant ...
... As key soil microorganisms of terrestrial ecosystems, arbuscular mycorrhiza fungi (AMF) play a key role in vegetation succession and mediation and stabilizing ecosystems. This study investigated the structures of AMF communities at the roots and rhizosphere soil of Vetiveria zizanioides of different ages (6-, 10-, 14-, and 17-year-old) in coal gangue heaps in Liupanshui City, Guizhou Province usin ...
Craig Liddicoat; Siegfried L. Krauss; Andrew Bissett; Ryan J. Borrett; Luisa C. Ducki; Shawn D. Peddle; Paul Bullock; Mark P. Dobrowolski; Andrew Grigg; Mark Tibbett; Martin F. Breed
chronosequences, etc ; autocorrelation; bacterial communities; case studies; data collection; ecological restoration; environmental DNA; prediction; soil; soil microorganisms; uncertainty; Show all 11 Subjects
Abstract:
... In post-mining rehabilitation, successful mine closure planning requires specific, measurable, achievable, relevant and time-bound (SMART) completion criteria, such as returning ecological communities to match a target level of similarity to reference sites. Soil microbiota are fundamentally linked to the restoration of degraded ecosystems, helping to underpin ecological functions and plant commun ...
chronosequences, etc ; Andosols; age of soil; altitude; clay; humid zones; microstructure; soil organic carbon; subsoil; surface area; Ecuador; Show all 11 Subjects
Abstract:
... The Galápagos archipelago consists of a chain of volcanic islands of different ages. We used a chronosequence and altitudinal sequence approach to investigate the influence of soil age (1.5 to 1070 ka) and climate (arid to very humid; 47–866 m a.s.l.) on the stocks of soil organic carbon (SOC) and stocks of silt- and clay-sized particles. We determined SOC stocks of the entire developed profiles. ...
chronosequences, etc ; Fabales; community structure; complement; ecosystems; environmental quality; models; national forests; phylogeny; rain forests; stand age; trees; Brazil; Show all 13 Subjects
Abstract:
... Continuous systematic monitoring is necessary to measure the success or failure of mineland rehabilitation. Here, we aimed to outline how measures of phylogenetic diversity and phylogenetic community structure complement existing monitoring frameworks along a waste pile rehabilitation chronosequence in Carajás National Forest, Brazil, including primary rainforest as the desired outcome. We pruned ...
chronosequences, etc ; Microcoleus; Rhodanobacter; air temperature; climate; community structure; denitrification; environment; glaciers; global change; microbial communities; microbial nitrogen; soil; Antarctica; Show all 14 Subjects
Abstract:
... The main goals of this study were to identify whether key processes involved in microbial soil nitrogen transformations, such as diazotrophic activity and denitrification, the chemical properties of limiting elements in the soil, and microbial community structure, differ in the different successional stages of two long term chronosequences in maritime Antarctica. Moreover, we expect the rates of d ...
... Grazing exclusion is proposed as an effective strategy for to recover degraded grasslands and increase carbon accumulation. However, few studies have explored the response of soil organic carbon (SOC) and its components to grazing exclusion during long-term succession. In this study, we collected soils from sites with a chronosequence of ~33 years after grazing exclusion with randomized and replic ...
chronosequences, etc ; community structure; data collection; species abundance; Show all 4 Subjects
Abstract:
... Community ecologists usually consider the Euclidean distance inappropriate to explore the multivariate structure of species abundance data. This is because the Euclidean distance may lead to the counterintuitive result for which two sample plots with no species in common may be more similar to each other than two plots that share the same species list. To overcome this paradoxical situation, the s ...
chronosequences, etc ; afforestation; environmental management; enzyme activity; extracellular enzymes; metabolism; models; nutrient availability; nutrient management; rhizosphere; soil enzymes; stand age; stoichiometry; Show all 13 Subjects
Abstract:
... The resource acquisition strategy of soil microorganisms can be reflected by soil extracellular enzyme activity (EEA). However, there are few reports on the application of extracellular enzyme stoichiometry (EES) method to study the difference in microbial metabolic nutrient limitation between rhizosphere and bulk soil. Here, we choose the rhizosphere and bulk soils of Pinus sylvestris var. mongol ...
chronosequences, etc ; aboveground biomass; arid lands; biomass production; carbon sequestration; ecological restoration; landscapes; mortality; reforestation; reproduction; shrubs; species recruitment; understory; Texas; Show all 14 Subjects
Abstract:
... Reforestation in the Lower Rio Grande Valley (LRGV) of Texas began in the 1960s and to date over 6,475 ha of land has been reforested. However, there has been minimal assessment to understand differential species success, compositional trends, and the aboveground carbon sequestration potential of these developing forests. We coupled quantitative planting information of >50 native woody tree and sh ...
chronosequences, etc ; Anthropocene epoch; B horizons; catenas; data collection; glaciation; highlands; land use; lidar; remote sensing; sediments; soil erosion; topographic slope; Connecticut; Show all 14 Subjects
Abstract:
... Intensive land use from agricultural activities fundamentally affects the physical structure and nutrient cycling of soils and can lead to increased erosion of sediment that gets stored downslope in legacy deposits. The northeastern USA provides the opportunity to study anthropogenic-induced changes to soils, with a well-documented ~300-year history of land modification. In this study, we investig ...
... PURPOSE: The objective of this study was to examine the pedogenetic evolution occurring in technic hard materials from an iron mine through the characterization of a chronosequence of 0-, 15-, and 40-year-old Technosols and an older natural soil. MATERIALS AND METHODS: Samples were taken from Technosols of different ages (0, 15, 40 years) which had developed after a layer of crushed conglomerate w ...
Veiko Uri; Mai Kukumägi; Jürgen Aosaar; Mats Varik; Hardo Becker; Kristiina Aun; Krista Lõhmus; Kaido Soosaar; Alar Astover; Marek Uri; Mikko Buht; Agnes Sepaste; Allar Padari
chronosequences, etc ; Pinus sylvestris; biomass production; carbon sequestration; clearcutting; ecosystems; environment; fine roots; net primary productivity; soil; stand age; trees; understory; vegetation; Show all 14 Subjects
Abstract:
... To evaluate the impact of stand age on the ecosystem's C budget, as well as the post-harvest recovery of the C storages and fluxes, a chronosequence of Scots pine stands from the clear-cut stage up to the age of 110 years was studied. An age-related trend of net primary production (NPP) demonstrated effective C accumulation in the young and middle-aged stands and their levelling out thereafter. Th ...
... Freeze-thaw (FT) events exert a great physiological stress on soil microorganisms and hence impact biogeochemical processes in soils. As numerous environmental factors affect microbial and chemical responses to FT, a better understanding of the leverage factors that regulate the responses to FT events is required. To date, FT-induced shifts and transformations in microbial and resource stoichiomet ...
chronosequences, etc ; land policy; models; sustainable land management; urbanization; China; Show all 6 Subjects
Abstract:
... Earth has entered the century of city. Horizontal urban expansion has long been studied and is relatively well understood, but the knowledge of the vertical profiles of built structures remains limited. Here we propose a spatially explicit ensemble model and map the wall-to-wall building height of the three most urbanized Chinese cities in 2017 based on open-access Sentinel-1 SAR data, biophysical ...
chronosequences, etc ; Liriodendron; aggregate stability; forestry; research; soil organic carbon; Show all 6 Subjects
Abstract:
... The objectives for this study were to determine changes in soil organic carbon (SOC) components and water-stable aggregates for soil profiles from different ages of plantations of Liriodendron chinense and to clarify which organic carbon component is more closely associated with the formation and stability of soil aggregates. Three layers of soil (depths 0–20 cm, 20–40 cm, 40–60 cm) were collected ...
chronosequences, etc ; forests; habitats; probability; species richness; understory; woodlands; France; Show all 8 Subjects
Abstract:
... QUESTIONS: Are hedgerows efficient corridors for forest‐dwelling species within agricultural landscapes? Do time and space interact synergistically to enhance forest plant species accumulation in hedgerows (i.e. the species–time–area relationship)? Does the distribution profile of forest herbs along hedgerows differ between specialist and generalist species? LOCATION: Agricultural landscapes in no ...