Daniel Tyteca
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View article: Marsh-orchids of Canada: long-standing mysteries partially solved
Marsh-orchids of Canada: long-standing mysteries partially solved Open
Summary Between 1959 and 1988, three populations of purple-flowered terrestrial orchids attributable to Dactylorhiza subgenus Dactylorhiza were discovered in Canada. The populations at Timmins, Ontario, and St John's, Newfoundland were str…
View article: Can phenotypic selection on floral traits explain the presence of enigmatic intermediate individuals in sympatric populations of <i>Platanthera bifolia</i> and <i>P. chlorantha</i> (Orchidaceae)?
Can phenotypic selection on floral traits explain the presence of enigmatic intermediate individuals in sympatric populations of <i>Platanthera bifolia</i> and <i>P. chlorantha</i> (Orchidaceae)? Open
Pollinators represent one of the main agents of selection on floral traits. Here, we estimated phenotypic selection on floral morphology and phenology in a sympatric population of two orchid species, Platanthera bifolia and P. chlorantha ,…
View article: Do local conspecific density and floral display size influence fruit set via pollinator visitation in <i>Orchis militaris</i> ?
Do local conspecific density and floral display size influence fruit set via pollinator visitation in <i>Orchis militaris</i> ? Open
Plant density varies naturally, from isolated plants to clumped individuals, and this can influence pollinator foraging behaviour and plant reproductive success. In addition, the effect of conspecific density on reproduction may depend on …
View article: Variability in space and time: contrasting fruit distribution patterns in the deceptive orchid <i>Orchis militaris</i>
Variability in space and time: contrasting fruit distribution patterns in the deceptive orchid <i>Orchis militaris</i> Open
In angiosperms, a decrease in fruit production towards the apex of individual inflorescences is usually observed. Orchids are thought to be primarily pollination‐limited species, and non‐uniform pollination could cause this decrease patter…
View article: Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants
Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants Open
Platanthera bifolia and P. chlorantha are terrestrial and rewarding orchids with a wide Eurasian distribution. Although genetically closely related, they exhibit significant morphological, phenological and ecological differences that maint…
View article: Noctuid moths as potential hybridization agents for Platanthera orchids
Noctuid moths as potential hybridization agents for Platanthera orchids Open
Zoophilous flowering plants communicate with pollinators to ensure pollen transfer. Pin-pointing which species are effective pollinators is not only essential to better understand plant-pollinator networks, but equally so to better underst…
View article: Effects of floral display, conspecific density and rewarding species on fruit set in the deceptive orchid Orchis militaris (Orchidaceae)
Effects of floral display, conspecific density and rewarding species on fruit set in the deceptive orchid Orchis militaris (Orchidaceae) Open
Background and aims – About one third of orchid species do not produce any floral reward but have developed various strategies to attract pollinators. The most common system is food deception, which takes place through two types of attract…
View article: Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants
Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants Open
Platanthera bifolia and P. chlorantha are terrestrial and rewarding orchids with a wide Eurasian distribution. Although genetically closely related, they exhibit significant morphological, phenological and ecological differences that maint…
View article: Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants
Characterization of sympatric <i>Platanthera bifolia</i> and <i>Platanthera chlorantha</i> (Orchidaceae) populations with intermediate plants Open
Platanthera bifolia and P. chlorantha are terrestrial and rewarding orchids with a wide Eurasian distribution. Although genetically closely related, they exhibit significant morphological, phenological and ecological differences that maint…
View article: The Orchid Flora of Portugal - Addendum N. 6 - Recent contributions (2003-2016), conservation practices and priorities
The Orchid Flora of Portugal - Addendum N. 6 - Recent contributions (2003-2016), conservation practices and priorities Open
Since publication of The Orchid Flora of Portugal in 1997 and its follow-ups until 2003, several new contributions were proposed, only part of which have been published. Among these, are discoveries of species that are indigenous in neighb…
View article: Mycorrhizal Fungal Diversity and Community Composition in Two Closely Related Platanthera (Orchidaceae) Species
Mycorrhizal Fungal Diversity and Community Composition in Two Closely Related Platanthera (Orchidaceae) Species Open
While it is generally acknowledged that orchid species rely on mycorrhizal fungi for completion of their life cycle, little is yet known about how mycorrhizal fungal diversity and community composition vary within and between closely relat…
View article: Insect Visitors and Potential Pollinators of<i>Orchis militaris</i>(Orchidaceae) in Southern Belgium
Insect Visitors and Potential Pollinators of<i>Orchis militaris</i>(Orchidaceae) in Southern Belgium Open
As part of a research project on the food deception strategy in Orchis militaris (L.), the objective of this study was to identify insect visitors and potential pollinators of this orchid species in Belgium. In 2013, insects were collected…