Now showing items 81-90 of 1433
A resurrection experiment finds evidence of both reduced genetic diversity and potential adaptive evolution in the agricultural weed Ipomoea purpurea
(Wiley Periodicals, Inc.CRC Press, 2016-09)
Despite the negative economic and ecological impact of weeds, relatively little is known about the evolutionary mechanisms that influence their persistence in agricultural fields. Here, we use a resurrection approach to ...
Recent phylogeographic structure of a “weedy” widespread Neotropical tree species, Cordia alliodora (Boraginaceae)
(Blackwell, 2013)
Aim Although hundreds of tree species have broad geographic ranges in the Neotropics, little is known about how such widespread species attained disjunct distributions around mountain, ocean and xeric barriers. Here, we ...
Species Review of Amphibian Extinction Risks in Madagascar: Conclusions from the Global Amphibian Assessment
(Blackwell Science Inc, 2005-12)
We assessed the extinction risks of Malagasy amphibians by evaluating their distribution, occurrence in protected areas, population trends, habitat quality, and prevalence in commercial trade. We estimated and mapped the ...
The ontogenetic origins of skull shape disparity in the Triturus cristatus group
(Schwanzlurche IIB, Aula VerlagWiley Periodicals, Inc., 2014-09)
The tactile-stimulated startle response of tadpoles: acceleration performance and its relationship to the anatomy of wood frog ( Rana sylvatica ), bullfrog ( Rana catesbeiana ), and American toad ( Bufo americanus ) tadpoles
(Wiley Subscription Services, Inc., A Wiley Company, 2006-04-01)
I described the tactile-stimulated startle response (TSR) of wood frog ( Rana sylvatica ), bullfrog ( Rana catesbeiana ), and American toad ( Bufo americanus ) tadpoles. One purpose was to rank species in terms of maximum ...
Integrated assessment of the direct and indirect effects of resource gradients on tree species recruitment
(Ecological Society of AmericaWiley Periodicals, Inc., 2014-02)
Cost-Effective Management Alternatives for Snake River Chinook Salmon: a Biological-Economic Synthesis
(Blackwell Publishing Inc, 2008-04)
The mandate to increase endangered salmon populations in the Columbia River Basin of North America has created a complex, controversial resource-management issue. We constructed an integrated assessment model as a tool for ...
Extreme long-distance dispersal of the lowland tropical rainforest tree Ceiba pentandra L. (Malvaceae) in Africa and the Neotropics
(Blackwell Publishing Ltd, 2007-07)
Many tropical tree species occupy continental expanses of rainforest and flank dispersal barriers such as oceans and mountains. The role of long-distance dispersal in establishing the range of such species is poorly ...
Incongruence in molecular species delimitation schemes: What to do when adding more data is difficult
(SpringerWiley Periodicals, Inc., 2018-05)
Using multiple, independent approaches to molecular species delimitation is advocated to accommodate limitations and assumptions of a single approach. Incongruence in delimitation schemes is a potential byâ product of ...
Bayesian placement of fossils on phylogenies using quantitative morphometric data
(Wiley Periodicals, Inc.CRC Press, 2018-09)
Jointly developing a comprehensive tree of life from living and fossil taxa has long been a fundamental goal in evolutionary biology. One major challenge has stemmed from difficulties in merging evidence from extant and ...