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 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 ...
Tree species diversity increases with conspecific negative …
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. 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 … rmb exchange boc
Shade tolerance and mycorrhizal type may influence sapling ...
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 … WebMay 18, 2012 · We found that most species experienced conspecific negative density dependence (CNDD), but there was little effect of heterospecific density. Additionally, … Webnegative density dependence. The regional strength of conspecific density dependence, the arithmetic mean of all density dependence estimates in each regional … rm beef patties