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Papers by Nathaniel Holland

Research paper thumbnail of Life Cycle and Growth of Senita Moths (Lepidoptera: Pyralidae): A Lepidopteran with Less Than Four Instars?

Ann Entomol Soc Amer, 2003

Research paper thumbnail of Life Cycle and Growth of Senita Moths (Lepidoptera: Pyralidae): A Lepidopteran with Less Than Four Instars?

Annals of the Entomological Society of America, 2003

Research paper thumbnail of Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions

Ecology Letters, Oct 1, 2009

Research paper thumbnail of The foley catheter in the management of epistaxis

International Journal of Clinical Practice, 2001

The Foley urinary catheter has been used in the management of epistaxis for many years, yet it ha... more The Foley urinary catheter has been used in the management of epistaxis for many years, yet it has never been designed or licensed for this purpose. We performed a telephone questionnaire of senior house officers in 90 ENT departments in England and Wales. The aim was to determine how many departments used the Foley catheter for epistaxis management, whether licensed nasal balloon devices were available and if there had been any complications associated with their use. Eighty-three (92%) ENT departments in the study used the Foley catheter for epistaxis management and 44 (49%) departments had licensed balloon devices available. Only 22% of ENT senior house officers questioned were aware that the Foley catheter was not licensed for use in the nose. Most complications associated with the use of nasal balloon devices appear to be due to Foley catheters.

Research paper thumbnail of Discrimination among floral resources by an obligately pollinating seed-eating moth: host-marking signals and pollination and florivory cues

Evolutionary Ecology Research, 2010

Discrimination among floral resources by an obligately ... Katherine C. Horn and J. Nathaniel Hol... more Discrimination among floral resources by an obligately ... Katherine C. Horn and J. Nathaniel Holland ... Department of Ecology and Evolutionary Biology, Rice University, Houston, Texas, USA ... Background: For oviposition, some insects exploit small discrete food ...

Research paper thumbnail of Population dynamics and the ecological stability of obligate pollination mutualisms

Research paper thumbnail of Ecological conditions for fruit abortion to regulate pollinator/seed-predators and increase plant re

Research paper thumbnail of Optimal defence theory predicts investment in extrafloral nectar resources in an ant–plant mutualism

Research paper thumbnail of Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiroptera: Vespertilionidae), in western Virginia

á Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiropter... more á Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiroptera:áVespertilionidae), in western Virginia. DSpace/Manakin Repository. ...

Research paper thumbnail of Mutualistic Interactions between Upiga virescens (Pyralidae), a Pollinating Seed-Consumer, and Lophocereus Schottii (Cactaceae)

Research paper thumbnail of Emergence of functional responses from interactions of individuals

Research paper thumbnail of Interspecific interactions and range margins: contrasts among interaction types

Background/Question/Methods Ecologists seek to anticipate how species interactions shift a specie... more Background/Question/Methods Ecologists seek to anticipate how species interactions shift a species’ range margins (the limit of its geographic distribution). There is a great diversity of types of species interactions and at present, we lack a clear understanding of which species’ interactions most influence species’ range margins. To resolve this, we synthesize results from a broad array of models of pairwise species interactions to ask 1) Which species interactions most influence species’ range margins and 2) How many parameters must be measured to anticipate a species’ range margin. Here we focus on one species and analyse where its range margin will be in the face of a second species. Interactions may benefit (+), harm (-), or have no effect (0) on either the focal species or the second species. We use this framework to contrast the effects of all interaction types on range margins, notably competition, commensalism, amensalism, mutualism and predation. Mathematically, we derive...

Research paper thumbnail of Dynamics of an ant–plant-pollinator model

Communications in Nonlinear Science and Numerical Simulation, 2015

ABSTRACT In this paper, we consider plant-pollinator–ant systems in which plant-pollinator intera... more ABSTRACT In this paper, we consider plant-pollinator–ant systems in which plant-pollinator interaction and plant–ant interaction are both mutualistic, but there also exists interference of pollinators by ants. The plant-pollinator interaction can be described by a Beddington–DeAngelis formula, so we extend the formula to characterize plant-pollinator mutualisms, including the interference by ants, and form a plant-pollinator–ant model. Using dynamical systems theory, we show uniform persistence of the model. Moreover, we demonstrate conditions under which boundary equilibria are globally asymptotically stable. The dynamics exhibit mechanisms by which the three species could coexist when ants interfere with pollinators. We define a threshold in ant interference. When ant interference is strong, it can drive plant-pollinator mutualisms to extinction. Furthermore, if the ants depend on pollination mutualism for their persistence, then sufficiently strong ant interference could lead to their own extinction as well. Yet, when ant interference is weak, plant–ant and plant-pollinator mutualisms can promote the persistence of one another.

Research paper thumbnail of Ecological and Evolutionary Conditions for Fruit Abortion to Regulate Pollinating Seed-Eaters and Increase Plant Reproduction

Theoretical Population Biology, 2002

Research paper thumbnail of Consumer–resource dynamics of indirect interactions in a mutualism–parasitism food web module

Theoretical Ecology, 2013

Research paper thumbnail of Population Dynamics and Mutualism: Functional Responses of Benefits and Costs

The American Naturalist, 2002

Research paper thumbnail of Emergence of functional responses from interactions of individuals

Research paper thumbnail of Testing hypotheses for excess flower production and low fruit-to-flower ratios in a pollinating seed-consuming mutualism

Research paper thumbnail of Consequences of ants and extrafloral nectar for a pollinating seed-consuming mutualism: ant satiation, floral distraction or plant defense?

Oikos, 2011

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Research paper thumbnail of Herbivore-induced changes in plant carbon allocation: assessment of below-ground C fluxes using carbon-14

Oecologia, 1996

... J. Nathaniel Holland-Weixin Cheng DA Crossley, Jr ... By using 14C-labelling techniques, the ... more ... J. Nathaniel Holland-Weixin Cheng DA Crossley, Jr ... By using 14C-labelling techniques, the quantity of root exudates released into soil has been estimated for arable crops to be 1040% of total net carbon assimilat-ed (Barber and Martin 1976; Whipps and Lynch 1983; Whipps ...

Research paper thumbnail of Life Cycle and Growth of Senita Moths (Lepidoptera: Pyralidae): A Lepidopteran with Less Than Four Instars?

Ann Entomol Soc Amer, 2003

Research paper thumbnail of Life Cycle and Growth of Senita Moths (Lepidoptera: Pyralidae): A Lepidopteran with Less Than Four Instars?

Annals of the Entomological Society of America, 2003

Research paper thumbnail of Consumer-resource theory predicts dynamic transitions between outcomes of interspecific interactions

Ecology Letters, Oct 1, 2009

Research paper thumbnail of The foley catheter in the management of epistaxis

International Journal of Clinical Practice, 2001

The Foley urinary catheter has been used in the management of epistaxis for many years, yet it ha... more The Foley urinary catheter has been used in the management of epistaxis for many years, yet it has never been designed or licensed for this purpose. We performed a telephone questionnaire of senior house officers in 90 ENT departments in England and Wales. The aim was to determine how many departments used the Foley catheter for epistaxis management, whether licensed nasal balloon devices were available and if there had been any complications associated with their use. Eighty-three (92%) ENT departments in the study used the Foley catheter for epistaxis management and 44 (49%) departments had licensed balloon devices available. Only 22% of ENT senior house officers questioned were aware that the Foley catheter was not licensed for use in the nose. Most complications associated with the use of nasal balloon devices appear to be due to Foley catheters.

Research paper thumbnail of Discrimination among floral resources by an obligately pollinating seed-eating moth: host-marking signals and pollination and florivory cues

Evolutionary Ecology Research, 2010

Discrimination among floral resources by an obligately ... Katherine C. Horn and J. Nathaniel Hol... more Discrimination among floral resources by an obligately ... Katherine C. Horn and J. Nathaniel Holland ... Department of Ecology and Evolutionary Biology, Rice University, Houston, Texas, USA ... Background: For oviposition, some insects exploit small discrete food ...

Research paper thumbnail of Population dynamics and the ecological stability of obligate pollination mutualisms

Research paper thumbnail of Ecological conditions for fruit abortion to regulate pollinator/seed-predators and increase plant re

Research paper thumbnail of Optimal defence theory predicts investment in extrafloral nectar resources in an ant–plant mutualism

Research paper thumbnail of Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiroptera: Vespertilionidae), in western Virginia

á Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiropter... more á Post-hibernation movement and foraging habitat of a male Indiana bat, Myotis sodalis (Chiroptera:áVespertilionidae), in western Virginia. DSpace/Manakin Repository. ...

Research paper thumbnail of Mutualistic Interactions between Upiga virescens (Pyralidae), a Pollinating Seed-Consumer, and Lophocereus Schottii (Cactaceae)

Research paper thumbnail of Emergence of functional responses from interactions of individuals

Research paper thumbnail of Interspecific interactions and range margins: contrasts among interaction types

Background/Question/Methods Ecologists seek to anticipate how species interactions shift a specie... more Background/Question/Methods Ecologists seek to anticipate how species interactions shift a species’ range margins (the limit of its geographic distribution). There is a great diversity of types of species interactions and at present, we lack a clear understanding of which species’ interactions most influence species’ range margins. To resolve this, we synthesize results from a broad array of models of pairwise species interactions to ask 1) Which species interactions most influence species’ range margins and 2) How many parameters must be measured to anticipate a species’ range margin. Here we focus on one species and analyse where its range margin will be in the face of a second species. Interactions may benefit (+), harm (-), or have no effect (0) on either the focal species or the second species. We use this framework to contrast the effects of all interaction types on range margins, notably competition, commensalism, amensalism, mutualism and predation. Mathematically, we derive...

Research paper thumbnail of Dynamics of an ant–plant-pollinator model

Communications in Nonlinear Science and Numerical Simulation, 2015

ABSTRACT In this paper, we consider plant-pollinator–ant systems in which plant-pollinator intera... more ABSTRACT In this paper, we consider plant-pollinator–ant systems in which plant-pollinator interaction and plant–ant interaction are both mutualistic, but there also exists interference of pollinators by ants. The plant-pollinator interaction can be described by a Beddington–DeAngelis formula, so we extend the formula to characterize plant-pollinator mutualisms, including the interference by ants, and form a plant-pollinator–ant model. Using dynamical systems theory, we show uniform persistence of the model. Moreover, we demonstrate conditions under which boundary equilibria are globally asymptotically stable. The dynamics exhibit mechanisms by which the three species could coexist when ants interfere with pollinators. We define a threshold in ant interference. When ant interference is strong, it can drive plant-pollinator mutualisms to extinction. Furthermore, if the ants depend on pollination mutualism for their persistence, then sufficiently strong ant interference could lead to their own extinction as well. Yet, when ant interference is weak, plant–ant and plant-pollinator mutualisms can promote the persistence of one another.

Research paper thumbnail of Ecological and Evolutionary Conditions for Fruit Abortion to Regulate Pollinating Seed-Eaters and Increase Plant Reproduction

Theoretical Population Biology, 2002

Research paper thumbnail of Consumer–resource dynamics of indirect interactions in a mutualism–parasitism food web module

Theoretical Ecology, 2013

Research paper thumbnail of Population Dynamics and Mutualism: Functional Responses of Benefits and Costs

The American Naturalist, 2002

Research paper thumbnail of Emergence of functional responses from interactions of individuals

Research paper thumbnail of Testing hypotheses for excess flower production and low fruit-to-flower ratios in a pollinating seed-consuming mutualism

Research paper thumbnail of Consequences of ants and extrafloral nectar for a pollinating seed-consuming mutualism: ant satiation, floral distraction or plant defense?

Oikos, 2011

Skip to Main Content. ...

Research paper thumbnail of Herbivore-induced changes in plant carbon allocation: assessment of below-ground C fluxes using carbon-14

Oecologia, 1996

... J. Nathaniel Holland-Weixin Cheng DA Crossley, Jr ... By using 14C-labelling techniques, the ... more ... J. Nathaniel Holland-Weixin Cheng DA Crossley, Jr ... By using 14C-labelling techniques, the quantity of root exudates released into soil has been estimated for arable crops to be 1040% of total net carbon assimilat-ed (Barber and Martin 1976; Whipps and Lynch 1983; Whipps ...