Intraspecific Variation in Sapling Mortality and Growth Predicts Geographic Variation in Forest Composition

1996 ◽  
Vol 66 (2) ◽  
pp. 181-201 ◽  
Author(s):  
Richard K. Kobe
Keyword(s):  
Geographic Variation ◽  
Intraspecific Variation ◽  
Forest Composition

Elevational Correlates of Speciation and Intraspecific Geographic Variation in Plumage in Andean Forest Birds

The Auk ◽  
1985 ◽  
Vol 102 (3) ◽  
pp. 556-579 ◽  
Author(s):  
Gary R. Graves
Keyword(s):  
Species Richness ◽  
Geographic Variation ◽  
Intraspecific Variation ◽  
Geographic Distribution ◽  
Ecological Factors ◽  
Geographic Range ◽  
Forest Birds ◽  
Elevational Distribution ◽  
The Mean ◽  
High Elevations

Abstract Intraspecific variation in plumage was used to test the null hypotheses that geographic variation in 280 species of elevationally restricted Andean forest birds is independent of elevation and is not a function of patchy geographic distribution. Both null hypotheses were rejected. At most taxonomic levels, geographic variation in plumage was correlated positively with both the mean of its elevational distribution and the size of its geographic range. Vertical amplitude of elevational distribution was not a significant predictor of geographic variation in plumage in most taxa. Independent of these elevational correlates, patchily distributed species showed significantly more geographic variation than continuously distributed species. These results show that geographic variation and presumably ongoing speciation phenomena are greater at higher elevations. The decreased species richness at high elevations may be attributable to a higher rate of extinction from catastrophic disturbance as well as to ecological factors that limit sympatry in newly formed species.

Brontostoma lilloi Carpintero, 1980, a junior synonym of B. rubrovenosum (Stål, 1860) (Hemiptera: Heteroptera: Reduviidae)

Zootaxa ◽  
2019 ◽  
Vol 4614 (1) ◽  
pp. 180
Author(s):  
HÉLCIO R. GIL-SANTANA ◽  
DIEGO L. CARPINTERO
Keyword(s):  
Body Size ◽  
Sexual Dimorphism ◽  
Geographic Variation ◽  
Intraspecific Variation ◽  
New World ◽  
Junior Synonym

There are 22 genera and more than 100 described species of Ectrichodiinae in the New World (Gil-Santana et al. 2015). Intraspecific variation in coloration and body size have been recorded in several species of the subfamily. These characteristics can occur in the same population or can suggest geographic variation of the same species (Wygodzinsky 1951, Dougherty 1995, Gil-Santana & Baena 2009, Gil-Santana et al. 2013). Sexual dimorphism is also common: females are almost always more or less larger than males, frequently have thicker fore femora and smaller eyes and ocelli (Dougherty 1995). 

Geographic variation in forest composition and precipitation predict the synchrony of forest insect outbreaks

Oikos ◽  
2017 ◽  
Vol 127 (4) ◽  
pp. 634-642 ◽  
Author(s):  
Kyle J. Haynes ◽  
Andrew M. Liebhold ◽  
Ottar N. Bjørnstad ◽  
Andrew J. Allstadt ◽  
Randall S. Morin
Keyword(s):  
Geographic Variation ◽  
Forest Composition ◽  
Insect Outbreaks ◽  
Forest Insect

To Whistle or Not to Whistle? Geographic Variation in the Whistling Behavior of Small Odontocetes

2008 ◽  
Vol 34 (3) ◽  
pp. 288-302 ◽  
Author(s):  
Julie N. Oswald ◽  
Shannon Rankin ◽  
Jay Barlow
Keyword(s):  
Geographic Variation
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