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Full-Text Articles in Life Sciences
Bryoecology In The American Southwest: Patterns Of Biodiversity And Responses To Global Change, John Carroll Brinda
Bryoecology In The American Southwest: Patterns Of Biodiversity And Responses To Global Change, John Carroll Brinda
UNLV Theses, Dissertations, Professional Papers, and Capstones
This dissertation combines investigation of the large-scale responses of bryophyte species diversity and distribution with small-scale physiological adaptations to global change. These two areas of inquiry are linked because one way to predict plant species responses to global change is to examine their distribution across current ecological gradients produced by factors such as latitude and elevation. By examining these biogeographic patterns one can identify those species that have a narrow tolerance and therefore are most sensitive to change. Selected bryophytes might then be used as indicator species in long-term monitoring programs. Where historical data exist, these can be used to …
Conservation Genetics Of The Endangered Eastern Freshwater Cod, Maccullochella Ikei, Catherine Jane Nock
Conservation Genetics Of The Endangered Eastern Freshwater Cod, Maccullochella Ikei, Catherine Jane Nock
Dr Catherine J Nock
Fragmentation over evolutionary time scales following vicariant and dispersal events has long been recognised as a dominant process in biological diversification and speciation; while anthropogenic habitat fragmentation in recent times is considered a threat to the long-term persistence of species and ecosystems. The eastern freshwater cod Maccullochella ikei is Australia’s largest endangered freshwater fish species. Abundant in the Clarence and Richmond River systems at the time of European settlement, populations crashed in the early 1900s causing local extinctions and range reduction. Recovery efforts, including a prohibition on fishing for M. ikei and hatchery breeding programs, were initiated in an attempt …