Tolerance of two invasive thistles to repeated disturbance

Zhang, Rui; Heberling, J. Mason; Haner, Emily; Shea, Katriona

doi:10.1007/s11284-011-0816-5

Cited by 16 publications

(19 citation statements)

References 47 publications

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“…As examples, Carduus acanthoides (spiny plumeless thistle) has numerous, though not persistent, seeds [68], is tolerant to repeated disturbances [69], and is opportunistic in colonizing gaps [70]. Rhamnus cathartica (Common buckthorn) has high shade tolerance, high growth and photosynthesis rates, wide range of tolerance of moisture and drought, unique leaf phenology, high fecundity, bird-dispersal of fruit, high germination rate, high seedling success in disturbed sites, and secondary metabolites, especially emodin, which may protect the plant from herbivores, pathogens, and high light levels; emodin may have allelopathic effects on natives nearby, and affect soil microbes and unripe fruit consumption/digestion by birds [71].…”

Section: Appendix Persistence Of Invasive Plantsmentioning

confidence: 99%

Distinguishing Early Successional Plant Communities Using Ground-Level Hyperspectral Data

Aneece

Epstein

2015

Remote Sensing

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Abandoned agricultural fields have recently become more abundant in the U.S. and remain susceptible to species invasions after cultivation disturbance. As invasive species become more widespread with increases in anthropogenic activities, we need more effective ways to use limited resources for conservation of native ecosystems. Remote sensing can help us monitor the spread and effects of invasive species, and thus determine the species and locations to target for conservation. To examine this potential, we studied plant communities dominated by exotic invasive plant species in secondary successional fields in northern Virginia using ground-level hyperspectral data. Within these communities, ordination analyses of vegetation surveys revealed differences in species compositions among plots and fields. These differences among communities were also observed in the spectral data. Stepwise multiple linear regression analyses to determine which species influenced the ordination axes revealed that many of the influential species are considered invasive, again underscoring the influence of invasive species on community properties. Stepwise regression analyses also revealed that the most influential wavelengths for discrimination were distributed along the spectral profile from the visible to the near-infrared regions. A discriminant analysis using wavelengths selected with a principal components analysis demonstrated that different plant communities were separable using spectral data. These spectrally observable differences suggest that we can use hyperspectral data to distinguish among invasive-dominated successional plant communities in this region.

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Section: Appendix Persistence Of Invasive Plantsmentioning

confidence: 99%

Distinguishing Early Successional Plant Communities Using Ground-Level Hyperspectral Data

Aneece

Epstein

2015

Remote Sensing

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“…Non-native invasive plant species are well known for their successful exploitation of environmental resources (e.g., water, space, light and nutrients), largely due to their aggressive and competitive ability, prolific seed production and seed longevity [1][2][3]. Along with having a competitive advantage in resource utilization over native species, many non-native weeds grow in the absence of natural enemies [1,2].…”

Section: Introductionmentioning

confidence: 99%

Remote Distinction of A Noxious Weed (Musk Thistle: CarduusNutans) Using Airborne Hyperspectral Imagery and the Support Vector Machine Classifier

Mırık¹,

Ansley²,

Steddom³

et al. 2013

Remote Sensing

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Remote detection of non-native invasive plant species using geospatial imagery may significantly improve monitoring, planning and management practices by eliminating shortfalls, such as observer bias and accessibility involved in ground-based surveys. The use of remote sensing for accurate mapping invasion extent and pattern offers several advantages, including repeatability, large area coverage, complete instead of sub-sampled assessments and greater cost-effectiveness over ground-based methods. It is critical for locating, early mapping and controlling small infestations before they reach economically prohibitive or ecologically significant levels over larger land areas. This study was designed to explore the ability of hyperspectral imagery for mapping infestation of musk thistle (Carduus nutans) on a native grassland during the preflowering stage in mid-April and during the peak flowering stage in mid-June using the support vector machine classifier and to assess and compare the resulting mapping accuracy for these two OPEN ACCESSRemote Sens. 2013, 5 613 distinctive phenological stages. Accuracy assessment revealed that the overall accuracies were 79% and 91% for the classified images at preflowering and peak flowering stages, respectively. These results indicate that repeated detection of the infestation extent, as well as infestation severity or intensity, of this noxious weed in a spatial and temporal context is possible using hyperspectral remote sensing imagery.

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“…Diversos trabajos han reportado características en plantas que favorecen la invasión, tales como: amplio rango de tolerancia a temperaturas altas (32) , rasgos de plasticidad fenotípica (33) , diferentes formas de reproducción (34) , periodos de vida cortos, rápido crecimiento, fácil dispersión y bancos de semillas persistentes (35) . Sin embargo, estas características pueden variar entre las diferentes especies y hábitats donde se presentan.…”

Section: Característicasunclassified

Biología del pasto rosado Melinis repens (Willd.) e implicaciones para su aprovechamiento o control

Melgoza‐Castillo¹,

Valladares²,

González³

et al. 2015

RMCP

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RESUMEN El pasto rosado (Melinis repens) es una especie introducida de África que invade diversos ecosistemas. EnMéxico se encuentra en todos los Estados, y en Chihuahua es la especie dominante en extensas áreas de pastizales. Las invasiones reducen la calidad y cantidad de los productos y servicios del ecosistema. No se sabe exactamente cuándo llegó al continente americano. Dependiendo de las condiciones climáticas puede comportarse como anual o perenne de vida corta. Produce abundante semilla durante años con precipitaciones por debajo de lo normal comparados con años lluviosos. La germinación de la semilla puede ser en presencia de luz o sin ella, la máxima germinación es entre 20 a 35 ºC; a -0.2 MPa se inhibe la germinación y el fuego no la afecta. ABSTRACTNatal grass (Melinis repens) is an introduced specie from Africa that is invading different ecosystems. In Mexico, it is present all over the country and dominates large areas of grasslands. Plant invasion reduces quality and quantity of ecosystem goods and services. The knowledge of the biology of invasive species is a key factor when a management and control plan will be established. It is unknown when this specie arrived to America. Depending on climatic conditions this grass may behave as annual or perennial. Seed production is larger in years with precipitation below normal than in wet years. Germination takes place with or without light, optimum temperature is from 20 to 35 ºC; at -0.2 MPa germination is inhibited, and fire does not affect seed germination. When moisture is not limited and during the early development, root:shoot ratios ranges from 1.13 to 1.90 and relative growth rate from 0.0034 to 0.15 mg g-1 d-1 ; also, biomass is reduced when natal grass grows on native soil compared to sterilized soil. Although it is considered as poor forage, the main use is as pasture. Other uses reported include ornamental, medicinal, and fito-remediation. Fire favors its growth, and no control method is known. So far, grazing of natal grass is the most viable management. Additionally, when planning a control campaign it is important to reduce the movement of this specie as part of human activities.

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Tolerance of two invasive thistles to repeated disturbance

Cited by 16 publications

References 47 publications

Distinguishing Early Successional Plant Communities Using Ground-Level Hyperspectral Data

Distinguishing Early Successional Plant Communities Using Ground-Level Hyperspectral Data

Remote Distinction of A Noxious Weed (Musk Thistle: CarduusNutans) Using Airborne Hyperspectral Imagery and the Support Vector Machine Classifier

Biología del pasto rosado Melinis repens (Willd.) e implicaciones para su aprovechamiento o control

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