From Lilliput to Brobdingnag: Extending Models of Mycorrhizal Function across Scales

Johnson, Nancy Collins; Hoeksema, Jason D.; Bever, James D.; Chaudhary, V. Bala; Gehring, Catherine A.; Klironomos, John N.; Koide, Roger T.; Miller, R. M.; Moore, John C.; Moutoglis, Peter; Schwartz, Mark W.; Simard, Suzanne W.; Swenson, Wendell M.; Umbanhowar, James; Wilson, Gail W. T.; Zabinski, Catherine A.

doi:10.1641/0006-3568(2006)56[889:fltbem]2.0.co;2

Cited by 74 publications

(39 citation statements)

References 43 publications

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“…The soil organic carbon content in least and ungrazed area influences the rate of freeing of nitrogen by the microorganisms since nitrogen is tied up within an organic carbon complex [46]. The soils not impacted with livestock grazing as it was observed in ungrazed sites of the montane forest stored large amount of nitrogen in tissues of a long lived stands where only the excess nitrogen is nitrified and used by plants.…”

Section: The Effect Of Livestock Grazing On the Total Soil Nitrogenmentioning

confidence: 99%

The Impact of Livestock Grazing on Soil Characteristics in Mount Kilimanjaro, Tanzania

Mligo¹

2015

GEP

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Livestock grazing is an anthropogenic disturbance on the soil properties in montane forests of the northern slopes of Mount Kilimanjaro. It was determined the effect of livestock grazing on SOC, N, CEC, SAS, SFD and P in the montane forest. Forty plots were randomly established for collection of soil samples. Data showed livestock grazing decreased the accumulation of SOC and consequently negatively affected the natural pattern of N, P, SFD, CEC and SAS. An opposing pattern of available soil phosphorus was interpreted that the nutrient pool retained in plant tissues particularly in the long-lived trees, which were absent in heavily grazed area. The observed positive correlation between SOC with TN and CEC implies the livestock grazing impacts on the former negatively affected the later soil parameters. Low fungal density in degraded parts of the montane forest indicates that they are sensitive to the current land use change. Based on the observation from this study, it can be regarded that excessive livestock grazing has a long-term negative ramification for soil conservation in montane forest. An important decision has to be sought off with regard to the conservation management of soil characteristics of the montane forest in Kilimanjaro Mountain.

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Section: The Effect Of Livestock Grazing On the Total Soil Nitrogenmentioning

confidence: 99%

The Impact of Livestock Grazing on Soil Characteristics in Mount Kilimanjaro, Tanzania

Mligo¹

2015

GEP

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“…Mycorrhizal fungi provide many important ecosystem functions and services at multiple scales: they influence resource acquisition in individual plants, productivity and diversity in plant communities, above-and belowground herbivore interactions, nutrient cycling, soil stability, and carbon sequestration in soils (Newsham et al 1995;van der Heijden et al 1998;Gehring and Whitham 2002;Miller and Jastrow 2000;Rillig 2004a;Johnson et al 2006). Preserving the functions and services that AM fungi provide in ecosystems requires a better understanding of Glomeromycotan biogeography because individual species and isolates function differently (Hart and Klironomos 2002;Hart and Reader 2002).…”

Section: Soil Conservation Requires a Better Understanding Of Am Fungmentioning

confidence: 99%

Macroecology of Microbes – Biogeography of the Glomeromycota

2008

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“…Mycorrhizal fungi are increasingly the focus of research into conservation and restoration of natural communities (Bever et al 2003;Johnson et al 2006;Klironomos 2002;Renker et al 2004). For many plant species the mycorrhizal association is obligate for they will not survive without the services provided by their fungal partners (Hetrick et al 1988;van der Heijden et al 1998a); and these services can vary depending on the origin of host and soil factors (Schultz et al 2001; Van der Heijden and Kuyper 2001).…”

Section: Introductionmentioning

confidence: 99%

Scale-dependent niche axes of arbuscular mycorrhizal fungi

2008

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Arbuscular mycorrhizal fungi (AMF) are mutualistic with most species of plants and are known to influence plant community diversity and composition. To better understand natural plant communities and the ecological processes they control it is important to understand what determines the distribution and diversity of AMF. We tested three putative niche axes: plant species composition, disturbance history, and soil chemistry against AMF species composition to determine which axis correlated most strongly with a changing AMF community. Due to a scale dependency we were not able to absolutely rank their importance, but we did find that each correlated significantly with AMF community change at our site. Among soil properties, pH and NO(3) were found to be especially good predictors of AMF community change. In a similar analysis of the plant community we found that time since disturbance had by far the largest impact on community composition.

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From Lilliput to Brobdingnag: Extending Models of Mycorrhizal Function across Scales

Cited by 74 publications

References 43 publications

The Impact of Livestock Grazing on Soil Characteristics in Mount Kilimanjaro, Tanzania

The Impact of Livestock Grazing on Soil Characteristics in Mount Kilimanjaro, Tanzania

Macroecology of Microbes – Biogeography of the Glomeromycota

Scale-dependent niche axes of arbuscular mycorrhizal fungi

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