No globally consistent effect of ectomycorrhizal status on foliar traits

Koele, Nina; Dickie, Ian A.; Oleksyn, Jacek; Richardson, Sarah J.; Reich, Peter B.

doi:10.1111/j.1469-8137.2012.04297.x

Cited by 83 publications

(85 citation statements)

References 46 publications

(63 reference statements)

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“…Having low phylogenetic diversity can be an issue in statistical analyses of ectomycorrhizal functioning (Koele et al 2012). The presence of a phylogenetic signal driving some of our results is clear in the Myrtaceae in NZ, where alien Eucalyptus forms a module with native Kunzea and Leptospermum .…”

Section: Discussionmentioning

confidence: 99%

Loss of functional diversity and network modularity in introduced plant-fungal symbioses

Dickie¹,

Cooper²,

Bufford³

et al. 2016

AoB PLANTS

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Native and alien trees associate with a wide range of beneficial fungi, but the few studies of these interactions tend to focus only on a few plant species or locations at a time. Using extensive databases collected by mycologists in the United Kingdom and New Zealand, we show that, in the latter region, fungi on alien trees are less functionally diverse than those associated with natives. In both New Zealand and the United Kingdom, however, the structure of the interaction network is simplified and "nested". This suggests that beneficial fungi hosted by alien trees may help facilitate further tree invasion.

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Section: Discussionmentioning

confidence: 99%

Loss of functional diversity and network modularity in introduced plant-fungal symbioses

Dickie¹,

Cooper²,

Bufford³

et al. 2016

AoB PLANTS

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“…However, Koele et al . () observed that ectomycorrhizal and arbuscular mycorrhizal plant species had similar leaf nutrient concentrations (a key trait in the LES), when comparing sister clades with arbuscular mycorrhiza and ectomycorrhiza. Furthermore, Comas et al .…”

Section: Why the One‐dimensional Resource Economics Spectrum Does Notmentioning

confidence: 99%

Towards a multidimensional root trait framework: a tree root review

et al. 2016

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Summary The search for a root economics spectrum (RES) has been sparked by recent interest in trait‐based plant ecology. By analogy with the one‐dimensional leaf economics spectrum (LES), fine‐root traits are hypothesised to match leaf traits which are coordinated along one axis from resource acquisitive to conservative traits. However, our literature review and meta‐level analysis reveal no consistent evidence of an RES mirroring an LES. Instead the RES appears to be multidimensional. We discuss three fundamental differences contributing to the discrepancy between these spectra. First, root traits are simultaneously constrained by various environmental drivers not necessarily related to resource uptake. Second, above‐ and belowground traits cannot be considered analogues, because they function differently and might not be related to resource uptake in a similar manner. Third, mycorrhizal interactions may offset selection for an RES. Understanding and explaining the belowground mechanisms and trade‐offs that drive variation in root traits, resource acquisition and plant performance across species, thus requires a fundamentally different approach than applied aboveground. We therefore call for studies that can functionally incorporate the root traits involved in resource uptake, the complex soil environment and the various soil resource uptake mechanisms – particularly the mycorrhizal pathway – in a multidimensional root trait framework.

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“…certain polyphenols and terpenes (Northup et al, 1995;Schimel & Bennett, 2004;Smolander et al, 2012)]. The AM-ECM framework explains an appreciable number of differences in ecosystem functioning due to tree species (Phillips, Brzostek & Midgley, 2013), but it does not appear to be applicable in all cases (Koele et al, 2012) as illustrated by the large fluxes of mineral N produced under the ECM evergreen gymnosperm Pseudotsuga menziesii (Thomas & Prescott, 2000;Zeller et al, 2007;Trum et al, 2011;Mueller et al, 2012b). Indeed, whereas most EG species of the family Pinaceae are associated with ectomycorrhizal (ECM) fungi, DA species can be associated with ECM and/or arbuscular mycorrhizal (AM) fungi (Cornelissen et al, 2001).…”

Section: Nutrient Cycling As Influenced By Tree Species Groups (1mentioning

confidence: 99%

Influences of evergreen gymnosperm and deciduous angiosperm tree species on the functioning of temperate and boreal forests

et al. 2014

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It has been recognized for a long time that the overstorey composition of a forest partly determines its biological and physical-chemical functioning. Here, we review evidence of the influence of evergreen gymnosperm (EG) tree species and deciduous angiosperm (DA) tree species on the water balance, physical-chemical soil properties and biogeochemical cycling of carbon and nutrients. We used scientific publications based on experimental designs where all species grew on the same parent material and initial soil, and were similar in stage of stand development, former land use and current management. We present the current state of the art, define knowledge gaps, and briefly discuss how selection of tree species can be used to mitigate pollution or enhance accumulation of stable organic carbon in the soil. The presence of EGs generally induces a lower rate of precipitation input into the soil than DAs, resulting in drier soil conditions and lower water discharge. Soil temperature is generally not different, or slightly lower, under an EG canopy compared to a DA canopy. Chemical properties, such as soil pH, can also be significantly modified by taxonomic groups of tree species. Biomass production is usually similar or lower in DA stands than in stands of EGs. Aboveground production of dead organic matter appears to be of the same order of magnitude between tree species groups growing on the same site. Some DAs induce more rapid decomposition of litter than EGs because of the chemical properties of their tissues, higher soil moisture and favourable conditions for earthworms. Forest floors consequently tend to be thicker in EG forests compared to DA forests. Many factors, such as litter lignin content, influence litter decomposition and it is difficult to identify specific litter-quality parameters that distinguish litter decomposition rates of EGs from DAs. Although it has been suggested that DAs can result in higher accumulation of soil carbon stocks, evidence from field studies does not show any obvious trend. Further research is required to clarify if accumulation of carbon in soils (i.e. forest floor + mineral soil) is different between the two types of trees. Production of belowground dead organic matter appears to be of similar magnitude in DA and EG forests, and root decomposition rate lower under EGs than DAs. However there are some discrepancies and still are insufficient data about belowground pools and processes that require further research. Relatively larger amounts of nutrients enter the soil-plant biogeochemical cycle under the influence of EGs than DAs, but recycling of nutrients appears to be slightly enhanced by DAs. Understanding the mechanisms underlying forest ecosystem functioning is essential to predicting the consequences of the expected tree species migration under global change. This knowledge can also be used as a mitigation tool regarding carbon sequestration or management of surface waters because the type of tree species affects forest growth, carbon, water and nutrient cycling.

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No globally consistent effect of ectomycorrhizal status on foliar traits

Cited by 83 publications

References 46 publications

Loss of functional diversity and network modularity in introduced plant-fungal symbioses

Loss of functional diversity and network modularity in introduced plant-fungal symbioses

Towards a multidimensional root trait framework: a tree root review

Influences of evergreen gymnosperm and deciduous angiosperm tree species on the functioning of temperate and boreal forests

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