The Experts below are selected from a list of 115155 Experts worldwide ranked by ideXlab platform
Jennifer S Powers - One of the best experts on this subject based on the ideXlab platform.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:* It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:Author(s): Powers, Jennifer S; Treseder, Kathleen K; Lerdau, Manuel T | Abstract: * It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
Manuel T Lerdau - One of the best experts on this subject based on the ideXlab platform.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:* It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:Author(s): Powers, Jennifer S; Treseder, Kathleen K; Lerdau, Manuel T | Abstract: * It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
Kathleen K Treseder - One of the best experts on this subject based on the ideXlab platform.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:* It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
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fine roots arbuscular mycorrhizal hyphae and Soil Nutrients in four neotropical rain forests patterns across large geographic distances
New Phytologist, 2004Co-Authors: Jennifer S Powers, Kathleen K Treseder, Manuel T LerdauAbstract:Author(s): Powers, Jennifer S; Treseder, Kathleen K; Lerdau, Manuel T | Abstract: * It is commonly hypothesized that stand-level fine root biomass increases as Soil fertility decreases both within and among tropical forests, but few data exist to test this prediction across broad geographic scales. This study investigated the relationships among fine roots, arbuscular mycorrhizal (AM) fungi and Soil Nutrients in four lowland, neotropical rainforests. * Within each forest, samples were collected from plots that differed in fertility and above-ground biomass, and fine roots, AM hyphae and total Soil Nutrients were measured. * Among sites, total fine root mass varied by a factor of three, from 237+/-19 g m-2 in Costa Rica to 800+/-116 g m-2 in Brazil (0-40 cm depth). Both root mass and length were negatively correlated to Soil nitrogen and phosphorus, but AM hyphae were not related to Nutrients, root properties or above-ground biomass. * These results suggest that understanding how Soil fertility affects fine roots is an additional factor that may improve the representation of root functions in global biogeochemical models or biome-wide averages of root properties in tropical forests.
Leonardo Galetto - One of the best experts on this subject based on the ideXlab platform.
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linking mycorrhizal fungi and Soil Nutrients to vegetative and reproductive ruderal plant development in a fragmented forest at central argentina
Forest Ecology and Management, 2013Co-Authors: Gabriel Grilli, Carlos Urcelay, Leonardo GalettoAbstract:We studied the actual links between mycorrhizal fungi, nutrient availability and plant development in several sites of fragmented Chaco forests. Specifically, we evaluated whether arbuscular mycorrhizal fungi (AMF) and dark septate endophytes (DSE) colonization and availability of Soil Nutrients are related to growth (biomass and plant height) and reproductive traits (pollen size and pollen and fruit production) of two ruderal, annual, congeneric Euphorbia species along a gradient of forest fragmentation. We assessed relationships between forest fragment size and isolation, nutrient availability, mycorrhizal fungal variables and plant development at eleven Chaquean forest fragments (0.5–1000 ha) immersed in an agricultural landscape in central Argentina. Mycorrhizal colonization was not related to forest fragment isolation, positively related to forest fragment size and negatively related to Soil nutrient availability in both hosts along the fragmentation gradient. Plant reproductive and vegetative traits were related to mycorrhizal colonization. In general, plant height, biomass, and fruit production were negatively related to AMF, and pollen production was positively related to DSE, in both ruderal hosts (native and exotic). We found remarkable relationships along a forest fragmentation gradient that reliably link forest fragment size to lower nutrient availability and increased mycorrhizal colonization in native/exotic ruderal hosts, while negatively linking AMF colonization to plant development and reproductive success.
Gabriel Grilli - One of the best experts on this subject based on the ideXlab platform.
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linking mycorrhizal fungi and Soil Nutrients to vegetative and reproductive ruderal plant development in a fragmented forest at central argentina
Forest Ecology and Management, 2013Co-Authors: Gabriel Grilli, Carlos Urcelay, Leonardo GalettoAbstract:We studied the actual links between mycorrhizal fungi, nutrient availability and plant development in several sites of fragmented Chaco forests. Specifically, we evaluated whether arbuscular mycorrhizal fungi (AMF) and dark septate endophytes (DSE) colonization and availability of Soil Nutrients are related to growth (biomass and plant height) and reproductive traits (pollen size and pollen and fruit production) of two ruderal, annual, congeneric Euphorbia species along a gradient of forest fragmentation. We assessed relationships between forest fragment size and isolation, nutrient availability, mycorrhizal fungal variables and plant development at eleven Chaquean forest fragments (0.5–1000 ha) immersed in an agricultural landscape in central Argentina. Mycorrhizal colonization was not related to forest fragment isolation, positively related to forest fragment size and negatively related to Soil nutrient availability in both hosts along the fragmentation gradient. Plant reproductive and vegetative traits were related to mycorrhizal colonization. In general, plant height, biomass, and fruit production were negatively related to AMF, and pollen production was positively related to DSE, in both ruderal hosts (native and exotic). We found remarkable relationships along a forest fragmentation gradient that reliably link forest fragment size to lower nutrient availability and increased mycorrhizal colonization in native/exotic ruderal hosts, while negatively linking AMF colonization to plant development and reproductive success.
