Soil salinity patterns in Tamarix invasions in the Bighorn Basin, Wyoming, USA

Ladenburger, C.G.; Hild, Ann L.; Kazmer, David J.; Munn, L. C.

doi:10.1016/j.jaridenv.2005.07.004

Cited by 72 publications

(64 citation statements)

References 22 publications

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“…increased soil salinity and did not account for other factors, such as groundwater evaporation contributing to soil salinity (McQueen and Miller 1972). More recent work has directly addressed this question (Lesica and DeLuca 2004;Ladenburger et al 2006) and concluded that Tamarix spp. does increase soil salinity.…”

Section: Saltsmentioning

confidence: 99%

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Elemental allelopathy: processes, progress, and pitfalls

2008

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Allelopathic interference between plants has generally been discussed in terms of the production of toxic complex biochemicals; however, complex biochemicals may not be the only substances plants use to interfere with one another. It has also been suggested that inorganic elements may be used in an allelopathic manner. If, through phytoenrichment or root exudates, a plant is able to increase the bioavailable levels of a particular element and tolerate the levels better than its neighbors, it can produce an allelopathic effect. Elemental allelopathy has been implicated as the cause for the success of a number of invasive weeds, including Acroptilon repens, Tamarix spp., Halogeton glomeratus, Salsola iberica, and Mesambryenthemum crystallinum. Phytoenrichment of elements can occur through hyperaccumulation and litter deposition and by altering rhizosphere chemistry. Reported cases of elemental allelopathy have involved three types of elements: heavy metals and soluble salts in terrestrial systems and elemental S in aquatic systems. For the most part, studies that have reported elemental allelopathy have been inconclusive. In order to prevent overreaching conclusions in the study of biochemical allelopathy, criteria were set that can be adapted to the study of elemental allelopathy. Of the studies reviewed, the most common criteria left uninvestigated were whether the plant was actually responsible for changing the concentration of the element and whether the increased levels of an element negatively affected other species. If the study of elemental allelopathy is to avoid the same problems often associated with the study of biochemical allelopathy, these criteria should be included in investigations of elemental allelopathy.

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Section: Saltsmentioning

confidence: 99%

“…stands actually improved plant performance. Ladenburger et al (2006) speculated that the salinity levels they found were too low to have an inhibitory effect, as well. Both studies were situated in the northern US where Tamarix is a relatively recent invader.…”

Section: Saltsmentioning

confidence: 99%

Elemental allelopathy: processes, progress, and pitfalls

2008

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“…Several impacts have been attributed to saltcedar, such as displacement of native species [1], decline in ecological functions [4], increased frequency of fire [5], lowering of water tables, lower river flow rates and lake levels [1], and soil salinization [5][6][7]. However, the reported evidences that saltcedaris the main or unique cause of these negative effects are ambiguous [3,8].…”

Section: Introductionmentioning

confidence: 99%

Saltcedar (Tamarix ramosissima) Invasion Alters Decomposer Fauna and Plant Litter Decomposition in a Temperate Xerophytic Deciduous Forest

Bedano

Sacchi

Natale

et al. 2014

Advances in Ecology

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Plant invasions may alter the soil system by changing litter quality and quantity, thereby affecting soil community and ecosystem processes. We investigated the effect of Tamarix ramosissima invasion on the decomposer fauna and litter decomposition process, as well as the importance of litter quality in decomposition. Litter decomposition and decomposer communities were evaluated in two monospecific saltcedar forests and two native forests in Argentina, in litterbags containing either local litter (saltcedar or dominant native species) or a control litter. Saltcedar invasion produced an increase in Collembola, Acari, and total mesofauna abundance, regardless of the litter type. Control litter decomposition was higher in the native forest than in the saltcedar forest, showing that increased abundance of decomposer fauna does not necessarily accelerate decomposition processes. Local litter decomposition was not different between forests, suggesting that decomposer fauna of both ecosystems is adapted to efficiently decompose the autochthonous litter. Our results suggest that the introduction of a resource with higher quality than the local one has a negative effect on decomposition in both ecosystems, which is more pronounced in the invaded forest than in the native forest. This finding stresses the low plasticity of saltcedar decomposer community to adapt to short-term environmental changes.

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“…Such variations could be attributed to nature of organic matter, soil moisture content and decomposition rates of foliage of shrub and annual species in the different locations and seasons (Marcar et al, 1999). For example, the breakdown of accumulated litter and higher microbial activity in the nebkhas under the canopy, may lead to a decrease in soil pH (Ladenburger et al, 2006). Niemi et al (2005) suggested that the soil enzyme activities vary seasonally, which depends on the chemical, physical, and biological characteristics of the soil.…”

Section: Discussionmentioning

confidence: 99%

Seasonal Variations in Soil and Bacteriological Properties as Affected by Phytogenic Mounds (Nebkhas) of Halocnemum strobilaceum in Lake Manzala, Egypt

Issa

El‐Bana²,

Bahgat

et al. 2017

Egypt. J. Bot.

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PHYTOGENIC mounds (nebkhas) formed by halophytes are widely distributed in coastal and desert environments. Such nebkhas provide loci for geochemical and biological activities that influence ecosystem processes and function. Seasonal variation in soil and bacterial properties were investigated within the nebkhas under the canopy of Halocnemum strobilaceum and in the surrounding unvegetated sites at salt marshes of Lake Manzala. The parameters measured include soil moisture, organic matter, total nitrogen and phosphorus, pH, electrical conductivity (EC), and bacterial community and enzyme characteristics. Enrichment ratios for soil salinity and nutrients were evaluated to indicate the salinity and fertility islands within nebkhas. Soil moisture content showed significant differences between the different seasons with the highest value in winter (16.55%) at unvegetated control site.Soil electrical conductivity, total nitrogen and phosphorus had their significantly higher values in nebkhas during autumn. The enrichment values for the measured soil parameters ranged from 0.31 to 4.09 in the four seasons which indicates a clear accumulation effect for soil nutrients and salts within the nebkhas under the canopy of H. strobilaceum. Bacterial abundance was consistently higher in nebkhas through all seasons. Eleven genera of bacteria belong to Firmicutes, Actinobacteria and proteobacteria phyla were recorded in nebkha and unvegetated sites. These genera varied in their occurrence between the two locations and the four seasons. It can be concluded that the formation of nebkhas by halophytic vegetation have noticeable effects on accumulation of soil salinity and fertility during different seasons that affect bacterial abundance and activity in coastal environment.

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Soil salinity patterns in Tamarix invasions in the Bighorn Basin, Wyoming, USA

Cited by 72 publications

References 22 publications

Elemental allelopathy: processes, progress, and pitfalls

Elemental allelopathy: processes, progress, and pitfalls

Saltcedar (Tamarix ramosissima) Invasion Alters Decomposer Fauna and Plant Litter Decomposition in a Temperate Xerophytic Deciduous Forest

Seasonal Variations in Soil and Bacteriological Properties as Affected by Phytogenic Mounds (Nebkhas) of Halocnemum strobilaceum in Lake Manzala, Egypt

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