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Aspects Of The Dispersal Ecology Of Solanum Dulcamara L (Solanaceae) Near London, Ontario, Daniel Hugh Broderick
Aspects Of The Dispersal Ecology Of Solanum Dulcamara L (Solanaceae) Near London, Ontario, Daniel Hugh Broderick
Digitized Theses
Field and laboratory studies of aspects of the dispersal ecology of Solanum dulcamara, a perennial species bearing fleshy fruits, were conducted near London, Ontario. Although there were annual and inter-habitat variations, 51.9% of the dispersant fruits were not ripe. Each fruit type contained some viable seeds, but germination and seedling emergence were more rapid from ripe fruits. Seeds from which the flesh had been removed produced seedlings at a faster rate than seeds sown within intact fruits. Seeds sown within intact fruits were more likely to produce seedlings in later years. In one such study the bulk of seedlings emerged …
The Breeding Ecology Of Pink Salmon (Oncorhynchus Gorbuscha Walbaum) From The Carp River, Eastern Lake Superior, Douglas Brian Noltie
The Breeding Ecology Of Pink Salmon (Oncorhynchus Gorbuscha Walbaum) From The Carp River, Eastern Lake Superior, Douglas Brian Noltie
Digitized Theses
Although inadvertently introduced to North American's Laurentian Great Lakes, pink salmon (Oncorhynchus gorbuscha) now constitute the world's only self-perpetuating freshwater population of this species. Their proliferation and growing impact on the extant fish fauna are elevating the species to one of considerable importance here. Despite this, the reproductive ecology of Great Lakes populations remains largely unknown. This study of the pink salmon breeding in the Carp River, a tributary to eastern Lake Superior, is a response to the need for this information. Considered are their upstream migration patterns, fish size and condition variation, migrant reproductive maturity and gonadal investment, male …