Conspecific negative density dependence

Author: hyyq

August undefined, 2024

WebJun 3, 2024 · One of the most important drivers of forest biodiversity is conspecific negative density dependence (CNDD), a reduction in performance when conspecific densities are high. While the majority of CNDD research has focused on tropical forests, evidence is mounting that CNDD may also play an important role in temperate forests. WebDec 6, 2024 · Conspecific negative density dependence in tree species can have major consequences for structuring of communities, yet in temperate forests this phenomenon remains largely unexplored. We investigated density-dependent recruitment in the long-lived conifer yew (Taxus baccata L.), for which low levels of regeneration have been …

Conspecific negative density dependence and why its …

WebRecent studies suggest that the mycorrhizal type associated with tree species is an important trait influencing ecological processes such as response to environmental conditions and conspecific negative density dependence (CNDD). However, we lack a general understanding of how tree mycorrhizal type … WebMar 15, 2024 · Conspecific-density-dependent effects on growth were negative across all tree size classes and elevations. These findings reveal fundamental differences in … chocolate and banana loaf

Is Variation in Conspecific Negative Density Dependence …

WebFeb 15, 2024 · Such patterns of plant performance being lower when nearer to a mature conspecific (negative density dependence) have been broadly documented across the world's biomes and in different plant functional groups (Crawford et ... resulting in a pattern of negative density dependence as in Janzen-Connell dynamics (Chung & Rudgers, … WebJul 3, 2024 · Stronger conspecific negative density dependence (CNDD), caused by greater intraspecific competition or increased pressure from host-specific predators or pathogens 34,35,36,37, should limit local ... WebFeb 27, 2024 · Conspecific negative density dependence, where larger populations experience lower growth rates, may suggest that competition for nutrients between conspecifics is an important mechanism even within … gravitational fields a level physics aqa

[PDF] Negative density dependence and environmental …

Tree species diversity increases with conspecific negative density ...

Webnegative density dependence. The regional strength of conspecific density dependence, the arithmetic mean of all density dependence estimates in each regional … WebFeb 1, 2024 · Conspecific negative density dependence (CNDD) an ecological process (e.g., the population growth rate or a demographic rate) of a species is said to show … chocolate and baconWebMay 7, 2024 · Recent plant–soil feedback experiments suggest that arbuscular mycorrhizal (AM) tree species experience stronger conspecific negative density dependence (CNDD) than ectomycorrhizal (EM) tree species. chocolate and banana french toast

"Webnegative density dependence. The regional strength of conspecific density dependence, the arithmetic mean of all density dependence estimates in each regional cell, had a significant negative linear re-lationwithspeciesrichness(correlationcoefficient r2 =0.42, F 1,106 = 75.4, P =5×10−14; N = 108 regional cells) such that species " - Conspecific negative density dependence

Conspecific negative density dependence

How does habitat filtering affect the detection of conspecific and ...

WebMay 18, 2012 · Conspecific negative density-dependent establishment, in which local abundance negatively affects establishment of conspecific seedlings through host-specific enemies, can influence species diversity of plant communities, but the generality of this process is not well understood. WebMay 18, 2012 · We found that most species experienced conspecific negative density dependence (CNDD), but there was little effect of heterospecific density. Additionally, …

Did you know?

Conspecific negative density dependence (CNDD) can be driven by two important mechanisms: intraspecific competition or/and natural enemies. Strong intraspecific competition for limited resources could result in density-dependent patterns, especially the asymmetric competition from conspecific … See more The study was conducted in a seasonal tropical rainforest in Xishuangbanna, southwestern China (101° 34′ E, 21° 36′ N). This area is situated in the northern edge of tropics with mean annual temperature 21.8 °C, … See more The survival probability of individual seedlings was modelled using generalized linear mixed-effect models (GLMMs) with binominal error distribution. We first tested whether neighbour densities affect the survival of tree … See more The 20 ha plot was divided into 500 quadrats, 20 m × 20 m. For each 400 m2 quadrat, elevation was calculated as the mean of the … See more We calculated four density parameters to quantify various aspects of local neighbourhood effects. We treated heterospecific species as equivalent because previous … See more WebMay 1, 2024 · Conspecific‐density‐dependent effects on growth were negative across all tree size classes and elevations. These findings reveal fundamental differences in biotic …

WebSep 1, 2014 · Initial sampled seedling density for nearly a third of species showed a positive correlation with increasing conspecific basal area, indicating dispersal limitation, but few … WebAug 7, 2024 · Plant pathogens are often hypothesized to promote species coexistence by generating conspecific negative density dependence (CNDD). However, the relative importance of fungal versus oomycete pathogens in maintaining plant species coexistence and community composition remains unresolved, despite their recognized effects on …

WebSep 21, 2024 · Strong conspecific negative density dependence is reflected by low (or even negative) values of CNDD and weak or low negative density dependence … WebSep 7, 2024 · Conspecific negative density dependence (CNDD) may vary by tree mycorrhizal type. However, whether arbuscular mycorrhizal (AM)-associated tree species suffer from stronger CNDD than ectomycorrhizal (EcM) and ericoid mycorrhizal (ErM)-associated tree species at different tree life stages, and whether EcM tree species can …

WebApr 30, 2024 · Together with conspecific negative density dependence, other local processes also influence seedling growth rates. In particular, how well individuals fit the local abiotic conditions have a determinant role in driving seedling performance (Augspurger, 1984; Chazdon, 1988). Our results showed that individual-level demographic …

WebJan 20, 2024 · Recent studies showing bias in the measurement of density dependence have the potential to sow confusion in the field of ecology. … chocolate and banana flapjacksWebJan 1, 2024 · Conspecific negative density dependence (CNDD) is one of the most empirically supported mechanisms for the maintenance of plant species diversity [1] [2] [3] [4]. Conspecific negative density... chocolate and banana muffin recipeWebNegative density dependence and environmental heterogeneity effects on tree ferns across succession in a tropical montane forest @article{ChacnLabella2014NegativeDD, title={Negative density dependence and environmental heterogeneity effects on tree ferns across succession in a tropical montane forest}, author={Julia Chac{\'o}n‐Labella and ... chocolate and banana marble cakeWebMay 1, 2024 · Conspecific‐density‐dependent effects on growth were negative across all tree size classes and elevations. These findings reveal fundamental differences in biotic interactions that may... chocolate and bananaWebApr 22, 2015 · Our results reveal that strong negative conspecific density dependence at early life stages gives way to phylogenetic density dependence at later stages. The impact of conspecific neighbours on … chocolate and balsamic vinegarWebThe Janzen–Connell (J-C) hypothesis suggests that specialised natural enemies cause distance- or density-dependent mortality among host plants and is regarded as an important mechanism for species … gravitational field strength bbc bitesizeWebAug 1, 2024 · Conspecific negative density dependence (CNDD) could be one of the most important local-scale mechanisms shaping plant species coexistence. However, the spatial and temporal changes in the ... gravitational field strength gcse