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Articles 1 - 9 of 9

Full-Text Articles in Biodiversity

Ecological And Phenotypic Diversification After A Continental Invasion In Neotropical Freshwater Stingrays, Matthew Kolmann, Fernando Pl Marques, James C. Weaver, Mason N. Dean, Joao Pedro Fontenelle, Nathan R. Lovejoy Aug 2022

Ecological And Phenotypic Diversification After A Continental Invasion In Neotropical Freshwater Stingrays, Matthew Kolmann, Fernando Pl Marques, James C. Weaver, Mason N. Dean, Joao Pedro Fontenelle, Nathan R. Lovejoy

Faculty Scholarship

Habitat transitions are key potential explanations for why some lineages have diversified and others have not—from Anolis lizards to Darwin's finches. The ecological ramifications of marine-to-freshwater transitions for fishes suggest evolutionary contingency: some lineages maintain their ancestral niches in novel habitats (niche conservatism), whereas others alter their ecological role. However, few studies have considered phenotypic, ecological, and lineage diversification concurrently to explore this issue. Here, we investigated the macroevolutionary history of the taxonomically and ecologically diverse Neotropical freshwater river rays (subfamily Potamotrygoninae), which invaded and diversified in the Amazon and other South American rivers during the late Oligocene to early …


A Postulate For Tiger Recovery: The Case Of The Caspian Tiger, Carlos A. Driscoll, I Chestin, H Jungius, Y Darman, E Dinerstein, J Seidensticker, J Sanderson, S Christie, S J. Luo, M Shrestha, Y Zhuravlev, O Uphyrkina, Y V. Jhala, S P. Yadav, D G. Pikunov, N Yamaguchi, D E. Wildt, J D. Smith, Marker, Philip J. Nyhus, R Tilson, D W. Macdonald, S J. O'Brien Jan 2012

A Postulate For Tiger Recovery: The Case Of The Caspian Tiger, Carlos A. Driscoll, I Chestin, H Jungius, Y Darman, E Dinerstein, J Seidensticker, J Sanderson, S Christie, S J. Luo, M Shrestha, Y Zhuravlev, O Uphyrkina, Y V. Jhala, S P. Yadav, D G. Pikunov, N Yamaguchi, D E. Wildt, J D. Smith, Marker, Philip J. Nyhus, R Tilson, D W. Macdonald, S J. O'Brien

Faculty Scholarship

Recent genetic analysis has shown that the extinct Caspian Tiger (P. t. virgata) and the living Amur Tigers (P. t. altaica) of the Russian Far East are actually taxonomically synonymous and that Caspian and Amur groups historically formed a single population, only becoming separated within the last 200 years by human agency. A major conservation implication of this finding is that tigers of Amur stock might be reintroduced, not only back into the Koreas and China as is now proposed, but also through vast areas of Central Asia where the Caspian tiger once lived. However, under the current tiger conservation …


Quite A Year And New Life For Panthera Tigris: The St. Petersburg Declaration And The Future Of Wild Tigers, Philip J. Nyhus, Lisa Ann Tekancic Jan 2010

Quite A Year And New Life For Panthera Tigris: The St. Petersburg Declaration And The Future Of Wild Tigers, Philip J. Nyhus, Lisa Ann Tekancic

Faculty Scholarship

No abstract provided.


Reintroduction Of The Chinese Tiger, Philip J. Nyhus, Urs Breitenmoser, Ron Tilson Jan 2009

Reintroduction Of The Chinese Tiger, Philip J. Nyhus, Urs Breitenmoser, Ron Tilson

Faculty Scholarship

No abstract provided.


Bearing The Costs Of Human-Wildlife Conflict: The Challenges Of Compensation Schemes, Philip J. Nyhus, Steve A. Osofsky, Paul Ferraro, H Fischer, Francine Madden Jan 2005

Bearing The Costs Of Human-Wildlife Conflict: The Challenges Of Compensation Schemes, Philip J. Nyhus, Steve A. Osofsky, Paul Ferraro, H Fischer, Francine Madden

Faculty Scholarship

No abstract provided.


Agroforestry, Elephants, And Tigers: Balancing Conservation Theory And Practice In Human-Dominated Landscapes Of Southeast Asia, Philip J. Nyhus, R L. Tilson Jan 2004

Agroforestry, Elephants, And Tigers: Balancing Conservation Theory And Practice In Human-Dominated Landscapes Of Southeast Asia, Philip J. Nyhus, R L. Tilson

Faculty Scholarship

Large mammal populations theoretically are best conserved in landscapes where large protected areas are surrounded by buffer zones, connected by corridors, and integrated into a greater ecosystem. Multi-use buffer zones, including those containing complex agroforestry systems, are promoted as one strategy to provide both economic benefits to people and conservation benefits to wildlife. We use the island of Sumatra, Indonesia to explore the benefits and limitations of this strategy. We conclude that conservation benefits are accrued by expanding the habitat available for large mammals but more attention needs to be focused on how to reduce and respond to human–wildlife conflict …


Incorporating Local Knowledge Into Population And Habitat Viability Assessments: Landowners And Tree Kangaroos In Papua New Guinea, Philip J. Nyhus, J Williams, J Borovansky, O Byers, P Miller Jan 2003

Incorporating Local Knowledge Into Population And Habitat Viability Assessments: Landowners And Tree Kangaroos In Papua New Guinea, Philip J. Nyhus, J Williams, J Borovansky, O Byers, P Miller

Faculty Scholarship

No abstract provided.


Tiger Restoration In Asia: Ecological Theory Vs. Sociological Reality, Ronald Tilson, Philip J. Nyhus, Neil Franklin Jan 2001

Tiger Restoration In Asia: Ecological Theory Vs. Sociological Reality, Ronald Tilson, Philip J. Nyhus, Neil Franklin

Faculty Scholarship

No abstract provided.


Keeping Problem Tigers From Becoming A Problem Species, Philip J. Nyhus, R L. Tilson Jan 1998

Keeping Problem Tigers From Becoming A Problem Species, Philip J. Nyhus, R L. Tilson

Faculty Scholarship

No abstract provided.