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Enhancing The Trap Of Lady's Slippers: A New Technique For Discovering Pollinators Yields New Data From Cypripedium Parviflorum (Orchidaceae), Martha A. Case, Zachary R. Bradford
Enhancing The Trap Of Lady's Slippers: A New Technique For Discovering Pollinators Yields New Data From Cypripedium Parviflorum (Orchidaceae), Martha A. Case, Zachary R. Bradford
Arts & Sciences Articles
Approximately one-third of orchid species offer no reward to their floral visitors and instead trick them into pollination. Typically, these deceptive systems have low visitation and fruiting rates because pollinators can learn to avoid non-rewarding species. Consequently, pollination ecology studies in these species often require long hours in the field to witness relatively few floral visitations relative to rewarding plants. Cypripedium parviflorum is a food-deceptive orchid with a pouch-like trap that temporarily imprisons pollinators. To escape, pollinators exert pressure on the stigma which facilitates pollination and widens the escape holes located near each anther. This study reports the use of …
Relaxation Oscillation Profile Of Limit Cycle In Predator-Prey System, Sze-Bi Hsu, Junping Shi, Junping Shi
Relaxation Oscillation Profile Of Limit Cycle In Predator-Prey System, Sze-Bi Hsu, Junping Shi, Junping Shi
Arts & Sciences Articles
It is known that some predator-prey system can possess a unique limit cycle which is globally asymptotically stable. For a prototypical predator-prey system, we show that the solution curve of the limit cycle exhibits temporal patterns of a relaxation oscillator, or a Heaviside function, when certain parameter is small.