A5074337429- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Fire effects on ecosystems
- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Land Use and Ecosystem Services
- Forest Insect Ecology and Management
- Mycorrhizal Fungi and Plant Interactions
- Plant Parasitism and Resistance
- Plant Pathogens and Fungal Diseases
- Legume Nitrogen Fixing Symbiosis
- Evolution and Genetic Dynamics
- Soil Carbon and Nitrogen Dynamics
- Genetic diversity and population structure
- Conservation, Biodiversity, and Resource Management
- Tree-ring climate responses
- Rangeland and Wildlife Management
- Remote Sensing in Agriculture
- Botany and Plant Ecology Studies
- Remote Sensing and LiDAR Applications
University of Alberta
2016-2025
Xidian University
2021-2025
East China Normal University
2018-2024
National Institutes for Food and Drug Control
2024
China Pharmaceutical University
2024
Sun Yat-sen University
2005-2021
John Wiley & Sons (United States)
2018
Ecological Society of America
2018
Helmholtz Centre for Environmental Research
2006-2012
Institute of Forest Ecology, Environment and Protection
2011
The classical environmental control model assumes that species distribution is determined by the spatial variation of underlying habitat conditions. This niche-based has recently been challenged neutral theory biodiversity which ecological drift a key process regulating coexistence. Understanding mechanisms maintain in communities critically depends on our ability to decompose diversity into contributions different processes affecting it. Here we investigated effects pure habitat, spatial,...
Abstract Aim To examine the contribution of large‐diameter trees to biomass, stand structure, and species richness across forest biomes. Location Global. Time period Early 21st century. Major taxa studied Woody plants. Methods We examined large density, biomass using a global network 48 (from 2 60 ha) plots representing 5,601,473 stems 9,298 210 plant families. This was assessed three metrics: largest 1% ≥ 1 cm diameter at breast height (DBH), all DBH, those rank‐ordered that cumulatively...
Tropical forests continue to be felled and fragmented around the world. A key question is how rapidly species disappear from forest fragments quickly humans must restore connectivity minimize extinctions. We surveyed small mammals on islands in Chiew Larn Reservoir Thailand 5 7 25 26 years after isolation observed near-total loss of native within <10-hectare (ha) 10- 56-ha fragments. Based our results, we developed an island biogeographic model estimated mean extinction half-life (50%...
Summary The spatial pattern of tree species retains signatures factors and processes such as dispersal, available resource patches for establishment, competition demographics. Comparison the different size classes can thus help to reveal importance characteristics underlying processes. However, dynamics may be masked by large‐scale heterogeneous site conditions, e.g. when restricting regeneration sites superimposes emergent patterns. Here we ask how environmental heterogeneity influence...
New roads, agricultural projects, logging, and mining are claiming an ever greater area of once-pristine Amazonian forest. The Millennium Ecosystems Assessment (MA) forecasts the extinction a large fraction tree species based on projected loss forest cover over next several decades. How accurate these estimates rates? We use neutral theory to estimate number, relative abundance, range size in Amazon metacommunity likely tree-species extinctions under published optimistic nonoptimistic...
Maintaining tree diversity Negative interaction among plant species is known as conspecific negative density dependence (CNDD). This ecological pattern thought to maintain higher in the tropics. LaManna et al. tested this hypothesis by comparing how changes with intensity of local biotic interactions tropical and temperate latitudes (see Perspective Comita). Stronger specialized seem prevent erosion biodiversity forests, not only limiting populations common species, but also strongly...
Tree mortality, growth, and recruitment are essential components of forest dynamics resiliency, for which there is great concern as climate change progresses at high latitudes. mortality has been observed to increase over the past decades in many regions, but causes this not well understood, we know even less about long-term changes growth rates. Using a dataset (1958-2009) observations on 1,680 permanent sample plots from undisturbed natural forests western Canada, found that tree...
Although area, species abundances, spatial distribution, and richness have been central components of community ecology, their interrelationships are not completely understood. To describe these interrelationships, we study test three patterns regarding using species–area models. The first one is the widely accepted generalization that states number monotonically increases with sampling area. second pattern predicts decrease in increase dominance a given third aggregation individuals within...
Abstract. Spatial patterns of tree species were studied in a 50‐ha tropical rain forest plot the Pasoh forest, Malaysia. This is characterized by high diversity and very number rare species. Out 745 occurring with > five individuals, 80.4 % had an aggregated distribution, 19.5% randomly distributed one regular distribution. The spatial vs. common species, juvenile adult trees, coarse fine scales compared. Rare are generally less than ones most rare. shift from clumping to looser intensity...
While the successional dynamics and large‐scale structure of Douglas‐fir forest in Pacific Northwest region is well studied, fine‐scale spatial characteristics at stand level are still poorly understood. Here we investigated on Vancouver Island, order to understand how three dominant species, Douglas‐fir, western hemlock, redcedar, coexist partition space along a chronosequence comprised immature, mature, old‐growth stands. We quantified changes distribution association species using...
Summary 1 We mapped the locations of live and dead trees in a large forest plot dominated by pioneer Douglas fir ( Pseudotsuga menziesii ) with an understorey invading late‐successional species western hemlock Tsuga heterophylla red cedar Thuja plicata on Vancouver Island, British Columbia, Canada, to test for intra‐ interspecific density‐dependent effects tree survival. 2 analysed both spatial patterning relationships between neighbourhood density also examined additional variables...
An ecological community's species diversity tends to erode through time as a result of stochastic extinction, competitive exclusion, and unstable host-enemy dynamics. This erosion can be prevented over the short term if recruits are highly diverse preferential recruitment rare or, alternatively, survive preferentially, which increases ages individuals increase. Here, we present census data from seven New Old World tropical forest dynamics plots that all show latter pattern. Within local...
Abstract Why does the neutral theory, which is based on unrealistic assumptions, predict diversity patterns so accurately? Answering questions like this requires a radical change in way we tackle them. The large number of degrees freedom ecosystems pose fundamental obstacle to mechanistic modelling. However, there are tools statistical physics, such as maximum entropy formalism (MaxEnt), that allow transcending particular models simultaneously work with immense families different rules and...
ABSTRACT Aims With the aim of understanding why some world's forests exhibit higher tree beta diversity values than others, we asked: (1) what is contribution environmentally related variation versus pure spatial and local stochastic to assessed at forest plot scale; (2) resolution are these beta‐diversity components more apparent; (3) determines in observed across regions/continents? Location World‐wide. Methods We compiled an unprecedented data set 10 large‐scale stem‐mapping plots...
The spatial dispersion of individuals in a species is an important pattern that controlled by many mechanisms. In this study we analyzed distributions tree large‐scale (20 ha) stem‐mapping plot species‐rich subtropical forest China. O‐ring statistic was used to measure patterns with abundance >10. Ω 0–10 , the mean conspecific density within 10 m tree, as intensity aggregation species. Our results showed: (1) aggregated distribution dominant plot. percentage decreased increased scale. (2)...