2024 Conspecific negative density dependence

Conspecific negative density dependence

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August undefined, 2024

WebNegative 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 ... WebAug 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 ...

Plants Free Full-Text Differences in Density Dependence …

WebABSTRACT: We tested the hypothesis that high-density populations of the non-indigenous gastro-pod Crepidula fornicataincrease settlement of conspecific recruits (facilitation process), and that this facilitation is balanced by competition processes. To verify our hypothesis, we sampled C. forni-cata at 2 drastically different densities for 10 ... Webnegative density dependence. The regional strength of conspecific density dependence, the arithmetic mean of all density dependence estimates in each regional … parks centerville ohio

Individual‐level trait variation and negative density dependence affect ...

WebApr 7, 2024 · Haemosporidian blood parasite infection had a negative effect on body fat levels (Merrill ... density-dependent effects may mean that the number of pairs increases but the number of chicks fledged per pair ... The choice of foraging site for many waterbirds is strongly influenced by conspecific attraction (Gawlik & Crozier, 2007; Herring ... 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. WebJan 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... tim mcgovern newton ma

(PDF) Conspecific negative density dependence and why its study …

Tree species diversity increases with conspecific negative density ...

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, … 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 … tim mcgovern meals on wheelsWebRecent 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 … parkscheibe clipart

"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 … " - Conspecific negative density dependence

Conspecific negative density dependence

Tree species diversity increases with conspecific negative …

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 … WebJan 20, 2024 · Specifically, we propose a two-pronged approach: (1) test for phenomenological patterns predicted by CNDD at different scales of biological organization (individual growth and mortality, population vital rates, community dynamics) and then (2) explore mechanisms underlying those patterns using experimental studies of competition …

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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 interactions that may...

WebMay 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. 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 …

WebLarge vertebrates are rarely considered important drivers of conspecific negative density-dependent mortality (CNDD) in plants because they are generalist consumers. … 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

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 …

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 parkscheibe positionWebMay 18, 2012 · We found that most species experienced conspecific negative density dependence (CNDD), but there was little effect of heterospecific density. Additionally, … parkscheibe pappeWebJun 29, 2024 · One of the most thoroughly studied is conspecific negative density dependence, in which specialist plant enemies reduce survivorship of seeds, seedlings or saplings located near adult conspecifics. Although there is much support that conspecific negative density dependence occurs in temperate forests, only a subset of the species … tim mcgovern floridaWebSep 21, 2024 · Strong conspecific negative density dependence is reflected by low (or even negative) values of CNDD and weak or low negative density dependence … parkscheibe am motorradWebJul 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 ... parkscheibe park microWebJan 1, 2024 · Among them, conspecific negative density dependence (CNDD) is an ecological process in which individuals have increased mortality and slowed growth rates … park scents candlesWebJun 29, 2024 · One of the most thoroughly studied is conspecific negative density dependence, in which specialist plant enemies reduce survivorship of seeds, seedlings … parkscheibe foto