Genetic diversity, spatial patterns, and growth of root sprouts in a temperate tree at the northern distribution limit

Ecoscience ◽  
2007 ◽  
Vol 14 (2) ◽  
pp. 250-258 ◽  
Author(s):  
Kristine K. RASMUSSEN ◽  
Johannes KOLLMANN
Keyword(s):  
Genetic Diversity ◽  
Spatial Patterns ◽  
Distribution Limit ◽  
Northern Distribution

scholarly journals Population dynamics of Amazonian floodplain forest species support spatial variation on genetic diversity but not range expansions through time

2021 ◽  
Author(s):  
Gregory Thom ◽  
Camila C. Ribas ◽  
Eduardo Shultz ◽  
Alexandre Aleixo ◽  
Cristina Y. Miyaki
Keyword(s):  
Genetic Diversity ◽  
Spatial Patterns ◽  
Amazon Basin ◽  
Population Connectivity ◽  
Alternative Methods ◽  
Forest Species ◽  
Effective Population ◽  
Habitat Specificity ◽  
Heterogeneous Distribution ◽  
Solimões River

Aim: We tested if historical demographic changes of populations occurring on the floodplains of a major Amazon Basin tributary could be associated with range expansions from upper and middle sections of the river, following the establishment of widespread river-created environments during the Late Pleistocene and Holocene. Location: Solimoes River, Western Amazon, South America Taxon: Myrmoborus lugubris, Thamnophilus cryptoleucus and Myrmotherula assimilis Methods: We analyzed thousands of UltraConserved Elements to explore spatial patterns of genetic diversity and connectivity between individuals. Range expansions were tested with alternative methods. We quantified habitat preference for the analyzed species in order to test if the occupation of dynamic habitats could predict spatial patterns of genetic diversity. Results: Our study did not support shared population range expansions related to historical regionalized changes in habitat availability. We found considerable variation in the spatial distribution of the genetic diversity between studied taxa, and that species with higher levels of specialization to dynamic environments have a more heterogeneous distribution of genetic diversity and reduced levels of gene flow across space. Main conclusions: Our results suggest that demographic expansions along the Solimoes River might be linked to geographic homogeneous oscillation in the distribution of floodplain environments, promoting effective population size changes but not range expansion. We found that habitat specificity might be a good predictor of population connectivity along the Amazonian floodplains.

scholarly journals Genetic diversity and divergence at the Arbutus unedo L. (Ericaceae) westernmost distribution limit

PLoS ONE ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. e0175239 ◽  
Author(s):  
Maria Margarida Ribeiro ◽  
Andrea Piotti ◽  
Alexandra Ricardo ◽  
Daniel Gaspar ◽  
Rita Costa ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Arbutus Unedo ◽  
Distribution Limit

scholarly journals Multi-source analysis reveals latitudinal and altitudinal shifts in range of Ixodes ricinus at its northern distribution limit

2011 ◽  
Vol 4 (1) ◽  
Author(s):  
Solveig Jore ◽  
Hildegunn Viljugrein ◽  
Merete Hofshagen ◽  
Hege Brun-Hansen ◽  
Anja B Kristoffersen ◽  
...  
Keyword(s):  
Ixodes Ricinus ◽  
Source Analysis ◽  
Distribution Limit ◽  
Northern Distribution

scholarly journals Distribution and natural history notes on Tachymenis chilensis chilensis (Schlegel, 1837) (Reptilia: Serpentes: Dipsadidae) in Argentina

Check List ◽  
2012 ◽  
Vol 8 (5) ◽  
pp. 919 ◽  
Author(s):  
Alejandro R. Giraudo ◽  
Félix Vidoz ◽  
Vanesa Arzamendia ◽  
Santiago J. Nenda
Keyword(s):  
Natural History ◽  
Barrier Effect ◽  
History Data ◽  
Mountain Ranges ◽  
Distribution Limit ◽  
The Andes ◽  
Northern Distribution ◽  
First Time ◽  
Latitudinal Range ◽  
Prey Items

We revisit the distribution and natural history data of Tachymenis chilensis chilensis (Schlegel, 1837) in Argentina based on compiled and novel records, extending its northern and southern distribution from the previously known localities in Argentina. We recorded two prey items in Argentinean populations: Rhinella rubropunctata, reported for the first time, and Liolaemus pictus. Tachymenis c. chilensis is mainly found in forested habitats, generally near wetlands with abundant populations of amphibians. The latitudinal range occupied by T. c. chilensis in Argentina is similar to that in Chile, but its northern distribution limit reaches the lowest latitudes in Chile. This is probably due to the higher humidity levels in the western slopes of the Andes and the barrier effect of the highest mountain ranges in this area.

scholarly journals First Record of the Plains Minnow, Hybognathus placitus, in Canada

2005 ◽  
Vol 119 (2) ◽  
pp. 219 ◽  
Author(s):  
R. M. Sylvester ◽  
S. E. Freeling ◽  
C. R. Berry
Keyword(s):  
National Park ◽  
First Record ◽  
Distribution Limit ◽  
Positive Identification ◽  
Northern Distribution ◽  
Field Identification

Seven Plains Minnows, Hybognathus placitus, Family Cyprinidae, were collected on 11 June 2003 from Morgan Creek, in Grasslands National Park, Saskatchewan, Canada. This collection is the first record of the species in Canada and extends the northern distribution limit of the species. Of 95 Hybognathus spp. collected at the site, only eight specimens were retained for positive identification because of the uncertain status of two conspecifics, the Western Silvery Minnow, H. argyritis, and the Brassy Minnow, H. hankinsoni, in Saskatchewan. Our findings should stimulate additional sampling to assess the identification and status of Hybognathus spp. in southwestern Saskatchewan. Accurate field identification of Hybognathus spp. remains an issue and collection of all specimens is recommended to accurately identify members within the genus.

Climate Control of Wood Formation: Illustrated for Scots Pine at Its Northern Distribution Limit

2013 ◽  
pp. 159-185 ◽  
Author(s):  
Jeong-Wook Seo ◽  
Dieter Eckstein ◽  
Andrea Olbrich ◽  
Risto Jalkanen ◽  
Hannu Salminen ◽  
...  
Keyword(s):  
Scots Pine ◽  
Wood Formation ◽  
Climate Control ◽  
Distribution Limit ◽  
Northern Distribution
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