Biology Foreign Studies Program 2004 Papers

Palo Verde
Monteverde
Cerro de la Muerte
Corcovado
La Selva
Comparative Projects
Discovery Bay

Palo Verde

Defense activity of three ant species on Acacia collinsii in sun and shade
Sara M. Hellmuth, Peter N. Chalmers, Matthew T. Kemp, Heather E. Lapin and Paul A. Marino

Resource allocation to ants in Acacia collinsii
Luke M. Evans, Jill L. Harris, Eleanor E. Campbell, Sarah E. B. Fierce and R. Scott Cushman

Colonization and defensive abilities of acacia ant species in an early successional dry tropical forest
Elizabeth V. Wilson, R. Quinn Thomas, J. Khai Tran, Stephen Weller and Brenda Whited
 

Female vigilance in howler monkeys (Alouatta palliata)
Sarah Fierce, Eleanor Campbell, Luke Evans, Jill Harris, and Scott Cushman
 

Relationships between butterfly flight and wing coloration and patterning
Brenda M. Whited, R. Quinn Thomas, J. Khai Tran, Stephen T. Weller and Elizabeth V. Wilson
 

Morphological and phylogenetic patterns in diurnal vs. nocturnal spiders
Heather E. Lapin, Matthew T. Kemp, Peter N. Chalmers, Sara M. Hellmuth and Paul A. Marino

Factors influencing the outcome of behavioral encounters in Ctenosaura similes
J. Khai Tran and Jill L. Harris
 

Density-dependent growth of the columnar cactus, Lemaireocereus aragonii
Stephen T. Weller and Elizabeth V. Wilson
 

Spatial distribution of waterbirds in a recently mowed section of tropical marsh
Matthew T. Kemp, Luke M. Evans and Brenda M. Whited
 

Temporal partitioning of feeding in tropical marsh fish of Laguna Palo Verde
R. Scott Cushman and Paul A. Marino
 

Microhabitat selection of Norops lizards in relation to temperature
Sara M. Hellmuth, Sarah E. B. Fierce and Eleanor E. Campbell

Not singing in the rain: Nasutitermes corniger response to trail disturbance in the presence of water
R. Quinn Thomas, Heather E. Lapin and Peter N. Chalmers

Monteverde

Stream community structure and the role of allochthonous inputs in Quebrada Moquina at Monteverde
Paul A. Marino
 

Female flower size and deceptive pollination in Begonia involucrata
J. Khai Tran, Elizabeth V. Wilson and Sarah E. B. Fierce
 

The effect of bark morphology on epiphyte composition and abundance
Peter N. Chalmers, Eleanor E. Campbell and Jill L. Harris
 

Do buttresses confer a competitive advantage for tropical trees?
R. Quinn Thomas and Sara M. Hellmuth 

The effect of disturbance on epilithic plant communities along streams
Luke M. Evans, Brenda M. Whited, Heather E. Lapin and Matthew T. Kemp 

The effects of tank water volume on community abundance in Guzmania monostachyia (Bromeliaceae)
Stephen T. Weller and R. Scott Cushman

Cerro de la Muerte

Distribution and abundance of Tipulid larvae in bamboo litter clumps in a high-elevation Costa Rican forest
Matthew T. Kemp and R. Quinn Thomas
 

Nectar volume distribution and characteristics of the hummingbird-pollinated flower Centropogon talamancensis
Peter N. Chalmers, Stephen T. Weller and Elizabeth V. Wilson

Effect of pollinator type on plant density and morphology
Eleanor E. Campbell, Luke M. Evans and Sara M. Hellmuth
 

The effect of mycorrhizae on bamboo growth
Jill L. Harris and Heather E. Lapin 

Density dependence of passalid beetles in a high elevation oak forest
Brenda M. Whited, J. Khai Tran, Sarah E. B. Fierce and Paul A. Marino

No sleep 'till broodin': factors influencing the daily activity schedule of a female volcano hummingbird with two young nestlings
R. Scott Cushman

Corcovado 

Competition in tropical bird flocks: army ant followers versus mixed species foraging groups
Matthew T. Kemp and J. Khai Tran

Where in the world is Gecarcinus quadratus?  Distribution of an elusive but influential forest species
Sarah E. B. Fierce, Peter N. Chalmers and Eleanor E. Campbell

Macrobrachium as a possible determinant of Astyanax fasciatus distribution in a neotropical lowland stream
Elizabeth V. Wilson, R. Quinn Thomas and Luke M. Evans 

What goes in must come out: assimilation efficiencies of Atta colombica colonies in primary and secondary forests
Heather E. Lapin, Sara M. Hellmuth, Jill L. Harris and Brenda M. Whited 

Effect of substrate type on fish distribution in the Rio Claro
R. Scott Cushman, Paul A. Marino and Stephen T. Weller

La Selva

Synchronous fruiting in Dipteryx panamensis and the relative roles of seed predators and dispersers
Matthew T. Kemp, R. Scott Cushman, Paul A. Marino and J. Khai Tran
 

Temporal patterns in abundance of generalist butterfly species
Brenda M. Whited and Jill L. Harris
 

To chirp or not to chirp: the costs of non-breeding season territoriality in Dendrobates pumilio
Heather E. Lapin and Sarah E. B. Fierce
 

The adaptive nature of floral bracts in four Heliconia spp.
Julia M. Butzler and Sara M. Hellmuth
 

Effects of successional forest stage on arthropod and bat communities
Eleanor E. Campbell and Luke M. Evans

Soil carbon dynamics in different successional stages of tropical forests
R. Quinn Thomas and Peter N. Chalmers 

Evidence of indirect plant defenses in two tropical plant families
Stephen T. Weller and Elizabeth V. Wilson

Comparative Projects 

Primary productivity and macro-invertebrate diversity in four tropical forests
Sarah E. B. Fierce, Luke M. Evans, Julia M. Butzler, Jill L. Harris, Eleanor E. Campbell and R. Scott Cushman 

Avian guild structures in edge vs. forest habitats in four Costa Rican forests
Peter N. Chalmers, Sara M. Hellmuth, Matthew T. Kemp, Heather I. Lapin and Paul A. Marino 

Forest structure and the effects of tree-falls on heterogeneity in at four sites types of tropical forest in Costa Rica
J. Khai Tran, R. Quinn Thomas, Stephen T. Weller, Brenda M. Whited and Elizabeth V. Wilson

Discovery Bay 

Selectivity of covering material in two sea urchins, Tripneustes ventricosus and Lytechinus variegatus
Sarah E. B. Fierce and Heather E. Lapin

Substrate selection of two sea cucumber species and their epithelial algae communities
Sara M. Hellmuth, Matthew T. Kemp and Jill L. Harris 

Factors affecting tropical fish communities on patch reefs
Eleanor E. Campbell, Elizabeth V. Wilson and Stephen T. Weller 

Patterns of distribution of three brittlestar species (Echinodermata: Ophiuroidea) on coral reefs
J. Khai Tran and Brenda M. Whited

Comparison of infaunal communities in cryptic and exposed sponges at different depths
Elizabeth V. Wilson, Brenda M. Whited, Sara M. Hellmuth and Jill L. Harris 

Predation and surge stress as factors in the distribution of two comatulid crinoid species
Heather E. Lapin and Luke M. Evans 

The effect of school size and composition on aggressive behavior in the territorial threespot damselfish, Stegastes planifrons
Matthew T. Kemp, J. Khai Tran, R. Quinn Thomas and Peter N. Chalmers

Coloration and movement of trumpetfish at Discovery Bay
R. Scott Cushman, Stephen T. Weller and Paul A. Marino 

Feeding benefits for spotted goatfish in mixed species schools with parrotfish
Paul A. Marino and R. Scott Cushman  

Rockin' around the christmas tree worm: the effect of surge on Spirobranchus giganteus morphology
Sarah E. B. Fierce and Eleanor E. Campbell 

Fish herbivory on two growth forms of marine plants
Luke M. Evans, R. Quinn Thomas and Peter N. Chalmers 

The great zooplankton die-off of 2004
Eleanor E. Campbell, Sarah E. B. Fierce, Heather E. Lapin and Sharon J. Martinson 

Diel patterns of coral reef fish composition and abundance in four habitats
Elizabeth V. Wilson, Stephen T. Weller, R. Quinn Thomas, Sara M. Hellmuth, Peter N. Chalmers and Julia M. Butzler

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