Organic matter stocks increase with degree of invasion in temperate inland wetlands

Martina, Jason P.; Hamilton, Stephen K.; Turetsky, M. R.; Phillippo, Colin J.

doi:10.1007/s11104-014-2211-9

Cited by 17 publications

(20 citation statements)

References 81 publications

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“…, Martina et al. ). This process is particularly true for those woody invasive species that invade grassland ecosystems, because they often have relatively higher biomass than herbaceous plants (Koteen et al.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, C. odorata incorporates easily utilizable organic materials (such as amino acids that supply N nutrient but also contain C) and invests more energy into creating biomass (Martina et al. ), for example, fine roots (Macdougall and Wilson ), for the occupancy of advantageous niches. This property is a potentially advantageous physiological property of invasive plants relative to native species that allows them to successfully establish in the habitats they invade (Liao et al.…”

Section: Discussionmentioning

confidence: 99%

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Invasion effects of Chromolaena odorata on soil carbon and nitrogen fractions in a tropical savanna

Wei

Quan

et al. 2017

Ecosphere

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Abstract. The ecological impacts of biological invasion are generalized with difficulty since these impacts are commonly species-or ecosystem-specific. A noxious invasive plant, Chromolaena odorata, has invaded broad regions, but limited attention has been paid to clarify the ecological impacts of this invasive plant on soil carbon (C) and nitrogen (N) storage in invaded ecosystems. This study was conducted to investigate changes in the labile and total soil C and N fractions in the surface and subsurface soil layers in non-invaded plots, plots with slight (30%) or severe (100%) invasion, and a restored forest plot with native tree and shrub species within a tropical savanna. Our results showed that different severities of C. odorata invasion induced inconsistent responses of the soil C and N fractions in the investigated tropical savanna. In particular, slight invasion did not alter or decreased the total and labile soil C and N fractions, and severe invasion significantly increased most of the total and labile soil C and N fractions. The encroachment of woody species significantly increased the soil C and N contents, with significantly higher increases than in the invaded plots. Our results suggest that the impacts of invasion on soil C and N fractions could vary depending on invasion severity. Therefore, comparisons of the invaded and non-invaded plots with invasion duration or severity overlooked are likely to result in biased conclusions regarding the invasioninduced ecological consequences in terrestrial ecosystems. Moreover, C. odorata invasion can alter soil nutrient conditions according to the needs of C. odorata establishment at different stages and consequently affect the soil C and N contents in this tropical ecosystem.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Invasion effects of Chromolaena odorata on soil carbon and nitrogen fractions in a tropical savanna

Wei

Quan

et al. 2017

Ecosphere

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“…through effects on nutrient pools and circulation, pollinator communities, soil biota or a third keystone species) rather than direct, and therefore difficult to identify and evaluate (Pyšek et al , Barney et al ). Further, biodiversity is much more than species and includes other physical entities such as genes and taxa, but also processes and functions (Hawksworth ), which may, as well as ecosystem services, be affected by invasive species (Martina et al , Schuster and Dukes ). For these reasons, we consider the Norwegian approach to assess the actual effect of each recently immigrated species on particular native taxa both too limited and too difficult for a wider practical application.…”

Section: Methodsmentioning

confidence: 99%

Invasive plant species in the Swedish flora: developing criteria and definitions, and assessing the invasiveness of individual taxa

Tyler

Karlsson

Milberg

et al. 2015

Nordic Journal of Botany

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In a north European context, identifying invasive species is far from trivial because the vegetation has been influenced by human activities for thousands of years. New species have immigrated continuously since the end of the last glaciation, both spontaneously and through direct or indirect help by man. Still, newly immigrated species may be problematic in a nature conservation context and may harm biodiversity, and cause changes in ecosystem services. In this study, all 721 presently established vascular plant and bryophyte taxa known to have been introduced to, or to have immigrated to, Sweden since the year 1700 are assessed for their invasive potential. The assessment is based on six components considered relevant for their invasiveness: 1) ability to compete in natural vegetation, 2) ability to form dense populations, 3) realized dispersal ability, 4) gene flow to native relatives, 5) time since immigration and 6) distance to their native range. Although the relative importance of these components is context dependent, a compound general index of invasive concern is proposed and calculated for all taxa. The index of invasive concern is validated by comparing it to assessments by a Bayesian Belief Network in which the influences of the same six components are assigned by expert opinions. In addition, rough estimates of the present‐day abundance of each taxon in Sweden are presented. The origin, biology and possible impact of the 150 taxa with the highest index values are discussed. Based on the index of invasive concern, Campylopus introflexus, Epilobium adenocaulon, E. ciliatum, Rosa rugosa, Lamiastrum galeobdolon subsp. argentatum, Orthodontium lineare, Solidago canadensis, Calystegia sepium subsp. spectabilis, Rubus armeniacus and Prunus serotina are identified as the ten most problematic alien vascular plant and bryophyte taxa in Sweden.

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“…Similarly, other recent work conducted in wetlands has contradicted the hypothesized positive relationship between biodiversity and ecosystem functions, and suggests that certain ecosystem functions, such as nutrient retention and productivity may be maximized at lower biodiversity (Hansson et al, 2005;Weisner and Thiere, 2010;. This relationship in wetlands may be driven by the dominance and greater relative productivity of robust, invasive plant species such as Phalaris arundinacea and Phragmites australis (Martina et al, 2014). Regardless of the specific mechanism, the tradeoff we observed indicates that biodiversity support does not necessarily signify that other ecosystem services are provided at high levels.…”

Section: Tradeoffs and Synergies Among Ecosystem Services In Wetlandsmentioning

confidence: 98%

Tradeoffs among ecosystem services in restored wetlands

Jessop

Spyreas

Pociask

et al. 2015

Biological Conservation

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Organic matter stocks increase with degree of invasion in temperate inland wetlands

Cited by 17 publications

References 81 publications

Invasion effects of Chromolaena odorata on soil carbon and nitrogen fractions in a tropical savanna

Invasion effects of Chromolaena odorata on soil carbon and nitrogen fractions in a tropical savanna

Invasive plant species in the Swedish flora: developing criteria and definitions, and assessing the invasiveness of individual taxa

Tradeoffs among ecosystem services in restored wetlands

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