Negative plant–soil feedback predicts tree-species relative abundance in a tropical forest

  title={Negative plant–soil feedback predicts tree-species relative abundance in a tropical forest},
  author={Scott A Mangan and Stefan A. Schnitzer and Edward Allen Herre and Keenan M. L. Mack and Mariana C. Valencia and Evelyn S{\'a}nchez and James D. Bever},
The accumulation of species-specific enemies around adults is hypothesized to maintain plant diversity by limiting the recruitment of conspecific seedlings relative to heterospecific seedlings. Although previous studies in forested ecosystems have documented patterns consistent with the process of negative feedback, these studies are unable to address which classes of enemies (for example, pathogens, invertebrates, mammals) exhibit species-specific effects strong enough to generate negative… 

Negative plant-soil feedbacks are stronger in agricultural habitats than in forest fragments in the tropical Andes.

The finding of no negative feedbacks among trees in forest fragments may be due to a loss in diversity of those microbes that drive diversity-maintaining processes in intact tropical forests, and negative feedback between forest trees and agricultural species suggests that soil community dynamics may contribute to the re-establishment of native species into abandoned agricultural lands.

Plant–soil feedbacks mediate shrub expansion in declining forests, but only in the right light

Interactions with soil biota act synergistically with altered abiotic environments to mediate species responses to widespread foundation tree mortality, providing evidence for a novel mechanism of plant response to large-scale disturbance.

Individual Plant-Soil Feedback Effects Influence Tree Growth and Rhizosphere Fungal Communities in a Temperate Forest Restoration Experiment

A field restoration experiment with 10 ectomycorrhizal fungal tree species native to eastern North America found no evidence for phylogenetic Janzen-Connell effects or conservation of soil mutualists across tree species, and suggested that future experiments should determine whether more diverse tree and fungal communities might have enhanced ecosystem functioning in tree restoration sites.

Plant-soil feedback in East-African savanna trees.

It is suggested that plant-soil feedbacks may well contribute to tree coexistence in savannas due to both negative conspecific and positive heterospecific feedbacks.

Testing for enemy-mediated density-dependence in the mortality of seedlings: field experiments with five Neotropical tree species

In Terminalia amazonia, seed germination was negatively density-dependent and the proportion of seeds germinating increased when insects were excluded and the magnitude of the insecticide eff ect was independent of density.

Negative plant-soil feedbacks increase with plant abundance, and are unchanged by competition.

The results suggest that abundant plants accrue species-specific soil pathogens to a greater extent than rare species, and negative feedbacks may be critical for preventing abundant species from becoming even more abundant thanRare species.

Soil microbial communities influence seedling growth of a rare conifer independent of plant-soil feedback.

Investigation of the functional effect of species-specific differences previously observed in the microbial communities underneath adult Wollemi pine and a neighboring species found no evidence for seedling growth being affected by tree species associated with soil inocula, suggesting that plant-soil feedbacks are not limiting recruitment in the natural population.

Tree diversity modifies distance-dependent effects on seedling emergence but not plant–soil feedbacks of temperate trees

Whether tree diversity can affect plant–soil feedbacks of two common temperate tree species, beech (Fagus sylvatica) and sessile oak (Quercus petraea) is examined.

Plant–soil feedbacks promote negative frequency dependence in the coexistence of two aridland grasses

This work used competition experiments and modelling to evaluate how two common groups of soil microbes influenced the self-limitation of two competing desert grass species, suggesting that microbial mechanisms can contribute to patterns of plant coexistence in arid grasslands.

Negative plant-soil feedbacks dominate seedling competitive interactions of north american successional grassland species

The findings suggest that the direct benefits of endophyte infection do not drive competitive responses of tall fescue at the early stages of plant development, at least under the conditions examined in this study.



Soil pathogens and spatial patterns of seedling mortality in a temperate tree

This work shows that a soil pathogen leads to patterns of seedling mortality in a temperate tree (Prunus serotina) as predicted by the Janzen–Connell hypothesis, and suggests that similar ecological mechanisms operate in tropical and temperate forests.

Feedback with soil biota contributes to plant rarity and invasiveness in communities

The results indicate that plants have different abilities to influence their abundance by changing the structure of their soil communities, and that this is an important regulator of plant community structure.

Microbe-mediated plant-soil feedback causes historical contingency effects in plant community assembly

It is concluded that feedback between early- successional plant species and soil microorgan- isms can play a crucial role in breaking dominance of early-successional plant communities.

Negative feedback within a mutualism: host–specific growth of mycorrhizal fungi reduces plant benefit

  • J. Bever
  • Environmental Science
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2002
Evidence of negative feedback on plant growth through changes in the composition of their mutualistic fungal symbionts, arbuscular mycorrhizal (AM) fungi is reported.

Local neighborhood and species' shade tolerance influence survival in a diverse seedling bank.

These findings indicate that attempts to quantify the contribution of density dependence to tropical tree species coexistence must integrate effects of neighbors across multiple life stages and should also take into account variation in life history strategy.

Plant pathogens drive density-dependent seedling mortality in a tropical tree.

It is shown experimentally that pathogens from the Oomycota are associated with intense mortality in seedlings of a neotropical tree, Sebastiana longicuspis, suggesting that short-term observational studies may underestimate the intensity and form of pathogen-induced mortality.

Conspecific plant–soil feedbacks reduce survivorship and growth of tropical tree seedlings

1. The Janzen–Connell (J–C) Model proposes that host‐specific enemies maintain high tree species diversity by reducing seedling performance near conspecific adults and promoting replacement by

Soil community feedback and the coexistence of competitors: conceptual frameworks and empirical tests.

  • J. Bever
  • Environmental Science
    The New phytologist
  • 2003
Enc accumulating evidence is found that soil community feedback can be common, strongly negative, and generated by a variety of complementary soil microbial mechanisms, including host-specific changes in the composition of the rhizosphere bacteria, nematodes, pathogenic fungi, and mycorrhizal fungi.

Pervasive density-dependent recruitment enhances seedling diversity in a tropical forest

Observations in a lowland, moist forest in the Republic of Panamá found that negative density-dependent recruitment contributes significantly to the increase in diversity from seeds to seedling recruits.

Pathogen mortality of tropical tree seedlings: experimental studies of the effects of dispersal distance, seedling density, and light conditions

The field experiment on Barro Colorado Island, Panama, demonstrated that both an increase in dispersal distance and a decrease in seedling density reduce levels of damping-off disease among seedlings of Platypodium elegans, and that there is an interaction between the two factors.