Nitrogen and phosphorus effect on Typha domingensis Presl. rhizome growth in a matrix of Schoenoplectus americanus (Pers.) Volkart ex Schinz and Keller

Escutia-Lara, Yazmín; Gómez-Romero, Mariela; Lindig‐Cisneros, Roberto

doi:10.1016/j.aquabot.2008.06.002

Cited by 17 publications

(11 citation statements)

References 20 publications

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“…Lo anterior sugiere que para que P. australis llegue a desplazar a las especies nativas se requiere de algún patrón de disturbio, antrópico o natural, que reduzca la competencia con especies nativas dominantes como S. americanus o que se requiere de muchos propágulos y tiempo sufi ciente para que haya unos pocos eventos de invasión exitosos. Un posible factor de disturbio sería el fuego, que se sabe altera la diná-mica de las especies nativas en nuestro sistema modelo, los humedales de la Mintzita (Escutia-Lara et al, 2009).…”

Section: Discussionunclassified

“…Las especies de Typha se distribuyen al bordo del espejo de agua y a medida que el nivel del agua se encuentra más cercano a la superfi cie del suelo o incluso debajo de éste se presenta S. americanus. En un experimento de coexistencia entre T. domingensis y S. americanus (Escutia-Lara et al, 2009) se evaluó el efecto de diferentes concentraciones de nitrógeno y fósforo, así como la combinación de ambos nutrimentos, en el desempeño de las especies. En ese experimento, el tratamiento más favorable para S. americanus fue la adición de nitró-geno más fósforo, ya que causó un aumento en la densidad de los tallos.…”

Section: Yazmín Escutia-lara Y Roberto Lindig-cisnerosunclassified

“…En ese experimento, el tratamiento más favorable para S. americanus fue la adición de nitró-geno más fósforo, ya que causó un aumento en la densidad de los tallos. La adición de únicamente de fósforo tuvo el mismo efecto pero en menor magnitud, mientras que el nitrógeno por sí solo no tuvo un efecto positivo en el crecimiento de S. americanus (Escutia-Lara et al, 2009). En otro experimento se encontró que la adición de nitrato incrementa la acumulación de biomasa aérea y en rizomas, la altura y número de retoños de T. domingensis, S. americanus y Phragmites australis, mientras que el fosfato sólo tuvo efecto en el desarrollo de la biomasa aérea de S. americanus (Martínez de la Cruz, 2010).…”

Section: Yazmín Escutia-lara Y Roberto Lindig-cisnerosunclassified

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Dinámica de Phragmites australis y Schoenoplectus americanus en respuesta a la adición de fósforo y nitrógeno en humedales experimentales

Escutia-Lara

Lindig-Cisneros

2012

Bot. Sci.

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3Autora para la correspondencia: yazminelb@yahoo.com.mxResumen: Las especies invasoras, como Phragmites australis, resultan grandes competidoras para las especies nativas; sin embargo, es poco lo que se conoce sobre el mecanismo de invasión. En este trabajo se evaluó la interacción de P. australis con una especie nativa, Schoenoplectus americanus, mediante un experimento de parcelas divididas con adición de nutrimento (nitrógeno y fósforo). Para P. australis se encontraron diferencias (P < 0.05) entre tratamientos para la altura, el número de tallos y la biomasa aérea y de rizomas, mientras que para S. americanus se encontraron diferencias (P < 0.05) en la altura máxima, la altura promedio de tallos, el número de tallos, el porcentaje de cobertura y la biomasa aérea. El incremento de nutrimentos no permitió que P. australis desplazara a S. americanus, lo que sugiere que en condiciones naturales S. americanus será capaz de competir por los nutrimentos siempre y cuando no se presente algún disturbio, ya que en este estudio se mantuvo el dosel de especies nativas antes de introducir a P. australis. Los resultados sugieren que la competencia intraespecífi ca es más fuerte que la interespecífi ca en ausencia de disturbio. Palabras clave: competencia, composición, disturbio, diversidad, nutrimentos, restauración ecológica. Abstract:Invasive species, such as Phragmites australis, are major competitors for native species, however, very little is known about the mechanisms of invasion. In this study the interaction between P. australis with a native species, Schoenoplectus americanus, was evaluated through a split-plot experiment with addition of nutrients (nitrogen and phosphorus). For P. australis statistically signifi cant differences (P < 0.05) were found among treatments for height, number of stems, aboveground biomass and rhizomes, while for S. americanus, statistically signifi cant differences (P < 0.05) were found for maximum height, average height of stems and number of stems, percentage of coverage and aboveground biomass. The increase in nutrients did not allowed the displacement of S. americanus by P. australis. This result suggest that under natural conditions S. americanus could be able to compete for nutrients and not be displaced by P. australis, as longs as no disturbance occurs, because in this study the native species canopy was not altered before introducing P. australis. Our results suggest that intraspecifi c competition is stronger than interspecifi c in the absence of disturbance.

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Section: Yazmín Escutia-lara Y Roberto Lindig-cisnerosunclassified

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Dinámica de Phragmites australis y Schoenoplectus americanus en respuesta a la adición de fósforo y nitrógeno en humedales experimentales

Escutia-Lara

Lindig-Cisneros

2012

Bot. Sci.

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“…The responses of P. australis have not been evaluated in this system but, in other wetlands, it has been reported that this species responds to increases in the concentrations of both nitrogen and phosphorus and also to the interaction of these two nutrients (Boar, 1996;Ennabili et al, 1998;Ehrenfeld, 2003). From field observations in the model wetland (Escutia-Lara et al, 2009a) and from controlled experiments (Escutia-Lara et al, 2009b;Escutia-Lara et al, 2010), it can be suggested that the competitive capacity of P. australis is greater or equal to that of T. domingensis and, in turn, greater than that of S. americanus; however, the magnitude and exact nature of the interactions between these species remains unknown. The objectives of the present study were to quantify the response of these species to different concentrations of nitrate, as this is the macronutrient to which all three species respond most markedly (Escutia-Lara et al, 2010) and to fire, in order to relate this recurring disturbance factor to patterns of species growth.…”

Section: Introduction and Methodsmentioning

confidence: 99%

Interactions between dominant hydrophytic species of the wetlands of western Mexico mediated by fire and nitrate concentration

Montejo-Mayo

del‐Val²,

Gómez-Romero³

et al. 2015

polibotanica

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SUMMARYWetland plant community dynamics are strongly driven by abiotic factors such as nutrient levels and fire. In wetlands where invasive species are present assessing the role of abiotic factors in plant-plant interactions is fundamental for both understanding community dynamics and management. In this study the interaction between pairs of species was quantified between one non-invasive (Schoenoplectus americanus), one that can become overdominant after human disturbances (Typha domingensis) and one that has an invasive lineage present in North America (Phragmites australis), growing under different nitrate concentrations and subjected to fire. All species responded by increasing growth to nitrate addition, but depending on the species, the response was significant for different variables. Phragmites for height and root biomass, Typha for aerial and root biomass and Schoenoplectus for all variables. Interactions between species were complex and differed between sampling years. For the first year, only the effect of Typha on itself was significant. For the second year, the effect of Typha was negative on Phrangmites, the effect of Schoenoplectus was negative on itself and, the effect of Typha and Phragmites was negative on Typha. The effect of fire was significant for Phragmites and Schoenoplectus, not burned plant were taller. Interactions between plants were altered by fire, the presence of Schoenoplectus benefited the performance of Typha, and the opposite was also true. For early stages of these species growth, the strongest competition occurs between the native species, allowing the invasive to mostly respond to nitrate levels, and fire have a strong effect also on the interactions between the natives and not with the invasive.Key words: wetland, negative interactions, management, nutrients, ecological restoration. RESUMENLa dinámica de comunidades vegetales de humedales está influenciada por factores abióticos, como los nutrimentos y el fuego. En humedales en donde hay especies invasoras, determinar el papel de factores abióticos en las interacciones planta-planta es fundamental para entender la dinámica de la comunidad y para su manejo. En este estudio, la interacción entre pares de especies fue cuantificada entre una no invasora (Schoenoplectus americanus), una que puede volverse sobredominante como consecuancia de disturbios humanos (Typha domingensis) y una que posee un linaje que es invasor en norteamérica (Phragmites australis), las cuales crecieron bajo diferentes concentraciones de nitrato y fueron sometidas al efecto del fuego. Todas las especies respondieron a la adición de nitratos incrementando su crecimiento. Phragmites respondió en altura y biomasa de raíces, Typha en biomasa aérea y de raíces y Schoenoplectus para todas las variables. Las interacciones entre especies fueron complejas y variaron entre años. Durante el primer año, sólo el efecto de Typha en si misma fue significativo. Para el segundo año, el efecto de Typha fue negativo en Phrangmites, el efecto de Schoenoplectus fue negat...

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“…Some places in the Wash have also been invaded by southern cattails (Typha domingensis PERS.). While native to the area, Typha is known as an aggressive invader (ESCUTIA-LARA et al, 2009; e.g., WOO and ZEDLER, 2002), especially under conditions of high nutrient concentrations as found in the Wash.Emergent plants are integral elements of nutrient/carbon cycling in wetlands. Plants sequester nutrients and other constituents and provide a carbon source in the form of detritus for biota.…”

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Comparisons of Macrophyte Breakdown, Associated Plant Chemistry, and Macroinvertebrates in a Wastewater Dominated Stream

Nelson¹

2011

International Review of Hydrobiology

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Replacement of native macrophyte species with exotic or invasive ones affects the quality of detritus entering streams and can alter nutrient cycles and community structure in aquatic ecosystems. Decomposition of air-dried native hardstem bulrush (Schoenoplectus acutus), invasive southern cattail (Typha domingensis), and exotic common reed (Phragmites australis) were studied in an urban stream (Las Vegas, Nevada, USA) using litter bags. Samples were analyzed for dry mass, lignin, nutrients, trace elements, and macroinvertebrates. Litter type and sediment deposited on plant material influenced material loss. Trace elements arsenic and selenium increased in plant material to concentrations considered marginal for ecosystem contamination by exposure day 76. Mercury increases were inconsistent across plant species and did not exceed limits. Bulrush decomposed faster, and tended to have higher selenium concentrations, than did invasive southern cattail and exotic common reed. Macroinvertebrate communities colonizing litter bags were similar across plant litter types, but differed from mesh-only bags and samples collected with a kick-net. Macroinvertebrate exclusion resulted in significantly lower loss rates, but functional feeding groups such as shredders were not associated with decomposition differences. The caddisfly, Smicridea, physically modified stem material and aided in processing, but microbes appeared most important in biological material breakdown. IntroductionEmergent macrophytes are often important in wetland environments, with shoots providing structure, primary production, and the basis for detrital food webs after senescence. Important processes may be altered when environments are invaded by invasive plant species associated with increased biomass, increased nitrogen availability, and higher litter decomposition rates relative to native plant species (EHRENFELD, 2003). Replacement of native emergent vegetation by aggressive invasives such as common reed (Phragmites australis (CAV.) TRIN. ex STEUDEL) is considered a threat to affected wetlands (MARKS et al., 1994). Ecosystem changes from reed invasion include increased biomass (FINDLAY et al., 2002) which in theory could impact aquatic organisms via increased biological oxygen demand or habitat alteration. The decomposition of organic matter is often considered an integrative measure of biotic and abiotic attributes of stream ecosystems (e.g., TANK et al., 2010). In urban environments, where non-native plants may be common, some ecological processes, like plant breakdown rates, may be insufficiently known (IMBERGER et al., 2008 Later, increased population growth in the area intensified the discharge of water treatment facilities into the Wash resulting in large amounts of channel erosion. This down-cutting and channelization of the Wash caused the water table to fall, draining the previously inundated floodplain. Wetland areas were largely diminished as a result. The Wash ultimately flows into Lake Mead, on the Colorado River, which is a source...

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Nitrogen and phosphorus effect on Typha domingensis Presl. rhizome growth in a matrix of Schoenoplectus americanus (Pers.) Volkart ex Schinz and Keller

Cited by 17 publications

References 20 publications

Dinámica de Phragmites australis y Schoenoplectus americanus en respuesta a la adición de fósforo y nitrógeno en humedales experimentales

Dinámica de Phragmites australis y Schoenoplectus americanus en respuesta a la adición de fósforo y nitrógeno en humedales experimentales

Interactions between dominant hydrophytic species of the wetlands of western Mexico mediated by fire and nitrate concentration

Comparisons of Macrophyte Breakdown, Associated Plant Chemistry, and Macroinvertebrates in a Wastewater Dominated Stream

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