Index Catalog // ScholarsArchive@OSU

Pollination biology and pollinator alternatives in mermaid meadowfoam (Limnanthes alba Hartw. ex Benth.)

Creator:: Jahns, Thomas R.
Abstract:: Meadowfoam (cultivar Mermaid) is an entomophilous winter annual oilseed crop that has historically produced an average of only two of five seeds per flower. Reference to inadequate meadowfoam pollination exists in the literature, but quantitative evidence is lacking. Studies were undertaken to: 1) quantify meadowfoam pollination requirements and 2) evaluate...
Resource Type:: Dissertation
Full Text:: - thers were excised from all open assay-plant flowers to inhibit pretreatment flower pollination by non

Foraging ecology of pollinators in the early stages of secondary succession in the western hemlock (Tsuga heteropohylla (Raf.) Sarg.) zone of the Oregon Coast Range

Creator:: Burikam, Intawat
Abstract:: The early stages of secondary succession of the McDonald and Paul Dunn State Forests, Corvallis, Oregon, were grouped into three stages; herb, herb-shrub, and shrub, based on vegetation types. Flowers of herbaceous species and residual shrubs dominated in the early years after clear-cutting. Woody plants became increasing abundant in the...
Resource Type:: Dissertation
Full Text:: flowers or pollination syndromes have been well documented by Proctor and Yeo (1973), and by Faegri and

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Creator:: Sweet, Heather R.
Abstract:: Pollination ecology may play an important role in the maintenance of selfing in populations of self-compatible hermaphroditic plants where both selfing and outcrossing occur (mixed mating). Behavior and abundance of pollinators can influence the two major modes of selfing; autogamy (selfing within a flower) and geitonogamy (selfing between flowers on...
Resource Type:: Masters Thesis
Full Text:: be strongly influenced by aspects of pollination ecology (Lloyd 1992; Lloyd and Schoen 1992

Architecture, size, and reproduction in plants : a pollination study of Mertensia ciliata (James) G. Don

Creator:: Geber, Monica
Abstract:: I experimentally test the hypothesis that the potential for selfing increases with plant size in Mertensia ciliata (Boraginaceae), a self-compatible, profusely-flowering perennial. This follows from the premises that 1) pollen dispersal by pollinators between flowers is limited, and 2) individual pollinators, in this study bumblebees, will visit more flowers per...
Resource Type:: Masters Thesis
Full Text:: . Architecture, Size, and Reproduction in Plants: A Pollination Study'of Mertensia ciliata (James) G. Don by

Sound production in three sympatric Ips (Coleoptera:Scolytidae) species co-inhabiting Sitka spruce (Picea sitchensis)

Creator:: Oester, Paul T.
Abstract:: Three sympatric species of Ips, colonizing Sitka spruce, were investigated with regard to their infestation habits, stridulating apparatus and acoustic signals. The above phenomena are evaluated qualitatively and/or quantitatively and the acoustic signal differences are proposed as a possible factor for maintaining species isolation, although function is not shown. Field...
Resource Type:: Masters Thesis
Full Text:: . Stridulations produced by I. concinnus beetles in the behavioral contexts of attraction, female stress and male

Effects of pollen collected by honey bees from pollination dependent agricultural cropping systems on honey bee nutrition

Creator:: Topitzhofer, Ellen
Abstract:: Managed honey bee (Apis mellifera L.) colonies are important pollinators of many cultivated crops. Honey bee colony declines averaging 30% annually in the United States for the past 7 years have caused significant concern and hence have been a topic of intensive investigation. These declines are reportedly due to multiple...
Resource Type:: Masters Thesis
Full Text:: Effects of pollen collected by honey bees from pollination

Movement and space use by the green hermit (Phaethornis guy) in a fragmented landscape in Costa Rica

Creator:: Volpe, Noelia L.
Abstract:: Human activities have altered Earth’s ecosystems. Most biomes have experienced a 20-50% conversion to human use. Loss of habitat has obvious effects on the persistence of species. Fragmentation, however, may also negatively affect biodiversity for those species that exhibit behavioral responses to changes in habitat configuration. Such behavioral changes include...
Resource Type:: Masters Thesis
Full Text:: through the landscape could be affected by changes in habitat configuration. Pollination is one such

Native bee diversity and floral resource availability in two Willamette Valley Oregon ecosystems

Creator:: Bergh, Jennifer E.
Abstract:: The importance of pollinators in native and managed landscapes is well known, and recent interest is directed towards investigating the role of native bees as providers of pollination ecosystem services. Uncertainty about bee populations at global and local scales has prompted research and general interest in conservation of bee diversity....
Resource Type:: Masters Thesis
Full Text:: providers of pollination ecosystem services. Uncertainty about bee populations at global and local

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Creator:: Hadley, Adam S.
Abstract:: A growing body of work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, and (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects of such processes is critical in designing effective management strategies to limit...
Resource Type:: Dissertation
Full Text:: work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance

The economic value of native pollinators in regard to Oregon blueberry production

Creator:: Ritter, Daniel J.
Abstract:: Blueberry production in Oregon is highly reliant upon the ecosystem services of native pollinators, which provide as much as a quarter of the total pollination services received by Blueberry growers. However, the health of these pollinator populations may be affected in yet unforeseen ways as growers adopt new pest management...
Resource Type:: Masters Thesis
Full Text:: producer surplus are in fact the ecosystem services provided by pollination. Chapter 4 will report the

ScholarsArchive@OSU

Pollination biology and pollinator alternatives in mermaid meadowfoam (Limnanthes alba Hartw. ex Benth.)

Foraging ecology of pollinators in the early stages of secondary succession in the western hemlock (Tsuga heteropohylla (Raf.) Sarg.) zone of the Oregon Coast Range

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Architecture, size, and reproduction in plants : a pollination study of Mertensia ciliata (James) G. Don

Sound production in three sympatric Ips (Coleoptera:Scolytidae) species co-inhabiting Sitka spruce (Picea sitchensis)

Effects of pollen collected by honey bees from pollination dependent agricultural cropping systems on honey bee nutrition

Movement and space use by the green hermit (Phaethornis guy) in a fragmented landscape in Costa Rica

Native bee diversity and floral resource availability in two Willamette Valley Oregon ecosystems

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

The economic value of native pollinators in regard to Oregon blueberry production

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