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Browsing by Author "Rojas-Sandoval, Julissa"

Browsing by Author "Rojas-Sandoval, Julissa"

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  • Assessing the impact of grass invasion on the population dynamics of a threatened Caribbean dry forest cactus 
    Rojas-Sandoval, Julissa; Meléndez-Ackerman, Elvia J.; Anglés-Alcázar, Daniel (2016)
    The negative impact of invasive plants on native species has been well documented, but little is known about the specific role that invaders play on the population decline of native species. Here we used demographic models ...
  • Associations between Soil Variables and Vegetation Structure and Composition of Caribbean Dry Forests 
    Melendez-Ackerman, Elvia; Rojas-Sandoval, Julissa; Fernandez, Danny S.; Gonzalez, Grizelle; Lopez, Hana; Sustache, Jose; Morales, Mariely; Garcia-Bermudez, Miguel; Aragon, Susan (2016)
    Soil-vegetation associations have been understudied in tropical dry forests when compared to the amount of extant research on this issue in tropical wet forests. Recent studies assert that vegetation in tropical dry forests ...
  • Biotic resistance in the tropics: patterns of seed plant invasions within an island 
    Ackerman, James D.; Tremblay, Raymond L.; Rojas-Sandoval, Julissa; Hernández-Figueroa, Elix (2017)
    Charles Elton proposed that high species diversity and low levels of disturbance provide a measure of biotic resistance against invasions by alien species. While there is some evidence for this hypothesis, there are numerous ...
  • Effects of hurricane disturbance and feral goat herbivory on the structure of a Caribbean dry forest 
    Rojas-Sandoval, Julissa; Meléndez-Ackerman, Elvia J.; Fumero-Cabán, José; García-Bermúdez, Miguel A.; Sustache, José; Aragón, Susan; Morales, Mariely; Fernández, Denny S. (2014)
    Question Hurricanes are a major factor influencing forest structure and have been linked to higher incidences of multiple-stemmed trees in Caribbean dry forests relative to the continent. In Sept 1998, category 3 Hurricane ...
  • Geographical ecology of dry forest tree communities in the West Indies 
    Franklin, Janet; Andrade, Riley; Daniels, Mark L.; Fairbairn, Patrick; Fandino, Maria C.; Gillespie, Thomas W.; Gonzalez, Grizelle; Gonzalez, Otto; Imbert, Daniel; Kapos, Valerie; Kelly, Daniel L.; Marcano-Vega, Humfredo; Melendez-Ackerman, Elvia J.; McLaren, Kurt P.; McDonald, Morag A.; Ripplinger, Julie; Rojas-Sandoval, Julissa; Ross, Michael S.; Ruiz, Jorge; Steadman, David W.; Tanner, Edmund V. J.; Terrill, Inge; Vennetier, Michel (2018)
    Aim: Seasonally dry tropical forest (SDTF) of the Caribbean Islands (primarily West Indies) is floristically distinct from Neotropical SDTF in Central and South America. We evaluate whether tree species composition was ...
  • Global rise in emerging alien species results from increased accessibility of new source pools 
    Seebens, Hanno; Blackburn, Tim M.; Dyer, Ellie E.; Genovesi, Piero; Hulme, Philip E.; Jeschke, Jonathan M.; Pagad, Shyama; Pyšek, Petr; van Kleunen, Mark; Winter, Marten; Ansong, Michael; Arianoutsou, Margarita; Bacher, Sven; Blasius, Bernd; Brockerhoff, Eckehard G.; Brundu, Giuseppe; Capinha, Cé; Causton, Charlotte E.; Celesti-Grapow, Laura; Dawson, Wayne; Dullinger, Stefan; Economo, Evan P.; Fuentes, Nicol; Guénard, Benoit; Jäger, Heinke; Kartesz, John; Kenis, Marc; Kühn, Ingolf; Lenzner, Bernd; Liebhold, Andrew M.; Mosena, Alexander; Moser, Dietmar; Nentwig, Wolfgang; Nishino, Misako; Pearman, David; Pergl, Jan; Rabitsch, Wolfgang; Rojas-Sandoval, Julissa; Roques, Alain; Rorke, Stephanie; Rossinelli, Silvia; Roy, Helen E.; Scalera, Riccardo; Schindler, Stefan; Štajerová, Katerina; Tokarska-Guzik, Barbara; Walker, Kevin; Ward, Darren F.; Yamanaka, Takehiko; Essl, Franz (2018)
    Our ability to predict the identity of future invasive alien species is largely based upon knowledge of prior invasion history. Emerging alien species-those never encountered as aliens before-therefore pose a significant ...
  • Invasive plant species in the West Indies: geographical, ecological, and floristic insights 
    Rojas-Sandoval, Julissa; Tremblay, Raymond L.; Acevedo-Rodríguez, Pedro; Díaz-Soltero, Hilda (2017)
    The level of invasion (number or proportion of invasive species) in a given area depends on features of the invaded community, propagule pressure, and climate. In this study, we assess the invasive flora of nine islands ...
  • Island biogeography of native and alien plant species: Contrasting drivers of diversity across the Lesser Antilles 
    Rojas-Sandoval, Julissa; Ackerman, James D.; Tremblay, Raymond L. (2020)
    Aim Understanding the factors driving the diversity of alien and native species on islands is crucial for predicting the spread of alien species and for proposing management practices to protect the unique native biodiversity ...
  • Naturalization and invasion of alien plants in Puerto Rico and the Virgin Islands 
    Rojas-Sandoval, Julissa; Acevedo-Rodríguez, Pedro (2015)
    A fundamental goal in invasion ecology is to identify and understand the factors explaining why some alien species become invasive when others fail. In this study we gathered data on taxonomy, invasive status, invasion ...
  • No saturation in the accumulation of alien species worldwide 
    Seebens, Hanno; Blackburn, Tim M.; Dyer, Ellie E.; Genovesi, Piero; Hulme, Philip E.; Jeschke, Jonathan M.; Pagad, Shyama; Py ek, Petr; Winter, Marten; Arianoutsou, Margarita; Bacher, Sven; Blasius, Bernd; Brundu, Giuseppe; Capinha, Cé; Celesti-Grapow, Laura; Dawson, Wayne; Dullinger, Stefan; Fuentes, Nicol; Jäger, Heinke; Kartesz, John; Kenis, Marc; Kreft, Holger; Kühn, Ingolf; Lenzner, Bernd; Liebhold, Andrew; Mosena, Alexander; Moser, Dietmar; Nishino, Misako; Pearman, David; Pergl, Jan; Rabitsch, Wolfgang; Rojas-Sandoval, Julissa; Roques, Alain; Rorke, Stephanie; Rossinelli, Silvia; Roy, Helen E.; Scalera, Riccardo; Schindler, Stefan; tajerová, Katerina; Tokarska-Guzik, Barbara; van Kleunen, Mark; Walker, Kevin; Weigelt, Patrick; Yamanaka, Takehiko; Essl, Franz (2017)
    Although research on human-mediated exchanges of species has substantially intensified during the last centuries, we know surprisingly little about temporal dynamics of alien species accumulations across regions and taxa. ...
  • Population dynamics of a threatened cactus species: general assessment and effects of matrix dimensionality 
    Rojas-Sandoval, Julissa; Meléndez-Ackerman, Elvia (2013)
    Harrisia portoricensis is an endemic Caribbean cactus currently under threatened status. In this study we used population projection matrices to evaluate the conservation status of this species and we performed a systematic ...
  • Potential Impacts of the Invasive Grass <I>Megathyrsus maximus</I> (Poaceae) on Ground-dwelling Arthropods in a Caribbean Dry Forest 
    Moreno, Lorna M.; Meléndez-Ackerman, Elvia; Cheleuitte, Christopher; Lourdes, Lastra; Rodriguez, Ricardo; Rojas-Sandoval, Julissa (2014)
  • Spatial patterns of distribution and abundance of <I>Harrisia portoricensis</I>, an endangered Caribbean cactus 
    Rojas-Sandoval, Julissa; Meléndez-Ackerman, Elvia J. (2013)
    Aims The spatial distribution of biotic and abiotic factors may play a dominant role in determining the distribution and abundance of plants in arid and semiarid environments. In this study, we evaluated how spatial patterns ...

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