SHARED AND UNIQUE FEATURES OF DIVERSIFICATION IN GREATER ANTILLEAN ANOLIS ECOMORPHS
- R. Langerhans, J. Knouft, J. Losos
- Environmental Science, BiologyEvolution; international journal of organic…
- 1 February 2006
Quantifying the relative importance of shared and unique responses to similar selective regimes provides a more complete understanding of phenotypic diversification, even in this much-studied system of anole ecomorphs.
The Evolution of Body Size in Extant Groups of North American Freshwater Fishes: Speciation, Size Distributions, and Cope’s Rule
It is shown that five of nine families of North American freshwater fishes exhibit an evolutionary trend of decreasing body size, which may be caused by the invasion of small streams and subsequent isolation and speciation.
Historical influences on genital morphology among sympatric species: gonopod evolution and reproductive isolation in the crayfish genus Orconectes (Cambaridae)
- Christopher A. Taylor, J. Knouft
- Biology
- 1 September 2006
It is found that sympatric species exhibited similar male genital morphology more often than expected based on the frequency of genital shapes within the genus Orconectes, suggesting that species co-occurrence and the associated genital shapes of sympatRIC congeners cannot be explained solely by interspecific ecological interactions.
Impacts of recent climate change on trends in baseflow and stormflow in United States watersheds
- D. Ficklin, S. Robeson, J. Knouft
- Environmental Science
- 28 May 2016
Characterizing the impacts of climatic change on hydrologic processes is critical for managing freshwater systems. Specifically, there is a need to evaluate how the two major components of…
Variation in scale numbers is consistent with ecologically based natural selection acting within and between lizard species
- R. Calsbeek, J. Knouft, T. Smith
- Environmental ScienceEvolutionary Ecology
- 1 July 2006
New evidence is presented that the diversification of anoles has been shaped by natural selection and that ecologically based selection pressures help explain diversification at both the population and species levels and preliminary evidence that variation in scale number is heritable is provided.
Latitudinal variation in the shape of the species body size distribution: an analysis using freshwater fishes
- J. Knouft
- Environmental ScienceOecologia
- 7 April 2004
Variation in the species body size-frequency distributions of 344 regional communities of North American freshwater fishes is examined in relation to latitude, species richness, and taxonomic composition to discuss the negative correlation between latitude and regional community size distribution skewness.
Phylogenetic analysis of the evolution of the niche in lizards of the Anolis sagrei group.
This work applied a phylogenetic approach to examine niche evolution during the radiation of Cuban trunk-ground anoles (Anolis sagrei group), which has produced 15 species in Cuba and revealed a specialist-generalist sister species pair in which the niche of one species is nested within, and much narrower than, the niches of another closely related species.
Sex and seasonal differences in the spatial terrestrial distribution of gray treefrog (Hyla versicolor) populations
- J. Johnson, J. Knouft, R. D. Semlitsch
- Environmental Science, Biology
- 1 December 2007
Assessing concurrent patterns of environmental niche and morphological evolution among species of horned lizards (Phrynosoma)
- A. M. Luxbacher, J. Knouft
- Environmental Science, BiologyJournal of Evolutionary Biology
- 1 August 2009
The prediction that variation in species morphology is related to environmental features has long been of interest to ecologists and evolutionary biologists. Many studies have demonstrated strong…
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