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Ackerman, James D. |
1977 |
"Biosystematics of the genus Piperia Rydb. (Orchidaceae)" in Botanical Journal |
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Ackerman, James D. |
1979 |
"Dodsonia, a new Ecuadorian genus of the zygopetalinae (orchidaceae)" in Selbyana |
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Ackerman, James D. |
1979 |
"Pollination biology of Listera Cordata (Orchidaceae)" in American Journal of Botany |
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Ackerman, James D. |
1980 |
"The Effectiveness of Fungus Gnats as Pollinators" in American Journal of Botany |
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Ackerman, James D. |
1981 |
"Pollination biology of calypso bulbosa var. occidentals (orchidaceae): a food-deception system" in Madrono |
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Ackerman, James D. |
1981 |
"Pollen Morphology of the Chloraeinae (Orchidaceae: Diurideae) and related subtribes" in American Journal of Botany |
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Ackerman, James D. |
1981 |
"Two new species of the chondrorhyncha complex (orchidaceae: zygopetalinae)" in Selbyana |
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Ackerman, James D. |
1982 |
"Stratum, Tree, and Flower Selection by Tropical Bees: Implications for the Reproductive Biology of Outcrossing Cochlospermum Vitifolium in Panama" in Ecology |
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Ackerman, James D. |
1982 |
"Food-Foraging Behavior of Male Euglossini (Hymenoptera: Apidae): Vagabonds or Trapliners?" in Biotropica |
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Ackerman, James D. |
1983 |
"Diversity and Seasonality of Male Euglossine Bees (Hymenoptera: Apidae) in Central Panamá" in Ecology |
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Ackerman, James D. |
1983 |
"On the Evidence for a Primitively Epiphytic Habit in Orchids" in Systematic Biology |
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Ackerman, James D. |
1983 |
"Euglossine bee pollination of the orchid, Cochleanthes Lipscombiae: a food source mimic" in American Journal of Botany |
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Ackerman, James D. |
1985 |
"Longevity of Euglossine Bees" in Biotropica |
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Ackerman, James D. |
1986 |
"Relative pollinator effectiveness and evolution of floral traits of Spathiphyllum Friedrichsthalii (Araceae)" in American Journal of Botany |
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Ackerman, James D. |
1986 |
"Two new species of epidendrum with lateral inflorescences" in Selbyana |
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Ackerman, James D. |
1986 |
"Coping with the epiphytic existence: pollination strategies" in Selbyana |
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Ackerman, James D. |
1987 |
"Limitations to Fruit Production in Ionopsis utricularioides (Orchidaceae)" in Biotropica |
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Ackerman, James D. |
1989 |
"Limitations to Sexual Reproduction in Encyclia krugii (Orchidaceae)" in Systematic Botany |
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Ackerman, James D. |
1989 |
"Asynchronous Phenologies of a Neotropical Orchid and Its Euglossine Bee Pollinator" in Ecology |
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Ackerman, James D. |
1989 |
"Geographic and Seasonal Variation in Fragrance Choices and Preferences of Male Euglossine Bees" in Biotropica |
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Ackerman, James D. |
1990 |
"Short- and Long-Term Limitations to Fruit Production in a Tropical Orchid" in Ecology |
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Ackerman, James D. |
1991 |
"Patterns and Maintenance of Extraordinary Variation in the Caribbean Orchid, Tolumnia (Oncidium) variegata" in Systematic Botany |
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Ackerman, James D. |
1991 |
"Ecological Effects of Hurricanes" in Bulletin of the Ecological Society of America |
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Ackerman, James D. |
1992 |
"Effects of display size, flowering phenology, and nectar availability on effective visitation frequency in Comparettia Falcata (Orchidaceae)" in American Journal of Botany |
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Ackerman, James D. |
1992 |
"Immediate Impact of Hurricance Hugo on a Puerto Rican Rain Forest" in Ecology |