Results 51 to 60 of about 12,882 (250)

Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection

PLANTS, PEOPLE, PLANET, EarlyView.
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo, Surangi W. Punyasena, Daurys de Alba, Roxana Alveo, Angelica Arcila, Jorge Bermudez, Jonatan Bustos, Dayenari Caballero‐Rodriguez, Karen Cardenas, David Caro, Francy Carvajal, Ivonne Marcela Castañeda, Shara Chaves, Carlos D'Apolito, Andres Diaz‐Jaramillo, Laura Diaz, Luisa Gomez, Mauricio León‐Carreño, Paula Lopera, Maria Alejandra Lopez, Priscila Lopez, Luke Mander, Jhonatan Martínez Murcia, Carlos Moreno, Enrique Moreno, Enrique Neyra, Brenda Orosco, Jhon Ortiz, Natalia Ossa, Natalia Ovalle, Carolina Ovalle, Angelo Plata, Ingrid Romero, Bruno Scudeiro, Silane A. F. da Silva Caminha, Axel Tejada‐Fajardo, Vinicius Do Valle, Thiago Wood   +37 more
wiley   +1 more source

Uncertainty in the timing of diversification of flowering plants rests with equivocal interpretation of their fossil record

Royal Society Open Science
The timing of the origin of crown-angiosperms exemplifies the impact of competing approaches to establishing evolutionary timescales. Fossils of unequivocal crown-angiosperms are not known from before the Cretaceous, and yet molecular estimates range ...
James W. Clark, Philip C. J. Donoghue
doaj   +1 more source

Trait coevolution and causal inference using generalized dynamic phylogenetic models

Methods in Ecology and Evolution, EarlyView.
Abstract Phylogenetic comparative methods are widely used to study trait coevolution across biological and cultural domains. The most common methods are phylogenetic generalized linear (mixed) models, phylogenetic path analysis, Pagel's ‘discrete’ method and Ornstein–Uhlenbeck models. While some frameworks like generalized linear mixed models are quite
Erik J. Ringen, Scott Claessens, Jordan S. Martin, Adrian V. Jaeggi   +3 more
wiley   +1 more source

A model of macroevolution with a natural system size [PDF]

, 1998
We describe a simple model of evolution which incorporates the branching and extinction of species lines, and also includes abiotic influences. A first principles approach is taken in which the probability for speciation and extinction are defined purely
Head, DA, Rodgers, GJ
core   +3 more sources

The emerging structure of the Extended Evolutionary Synthesis: where does Evo-Devo fit in? [PDF]

, 2018
The Extended Evolutionary Synthesis (EES) debate is gaining ground in contemporary evolutionary biology. In parallel, a number of philosophical standpoints have emerged in an attempt to clarify what exactly is represented by the EES.
A Fuentes, A Fábregas-Tejeda, A Minelli, A Stoltzfus, A Wagner, A Wilkins, AC Love, AC Love, AC Love, AC Love, Alejandro Fábregas-Tejeda, AP Moczek, B Grant, B Sidlauskas, BH Weber, BK Hall, CH Waddington, D Charlesworth, D Duboule, D Noble, D Noble, DJ Depew, DJ Depew, DJ Futuyma, DJ Futuyma, DJ Nicholson, DR Brooks, E Abouheif, E Danchin, E Jablonka, E Jablonka, E Mayr, E Mayr, E Pennisi, E Pennisi, EH Davidson, EI Svensson, EL Peterson, F Suman, FJ Odling-Smee, Francisco Vergara-Silva, G Caponi, G Dassow von, G Fusco, G Gottlieb, GB Müller, GB Müller, GB Müller, GB Müller, GB Müller, GD Wassermann, GP Wagner, GP Wagner, GP Wagner, GP Wagner, GP Wagner, H Palma, HE Hoekstra, I Brigandt, I Brigandt, I Brigandt, I Hacking, I Lakatos, I Tëmkin, J Jaeger, J Whitfield, JA Endler, James Griesemer, JJ Welch, JL Gaddis, JL Hendrikse, JO Reiss, JR True, JS Wicken, K Laland, K Laland, K Laland, K Raj, KE Willmore, KN Laland, L Craig, L Darden, L Nuño de la Rosa, L Nuño de la Rosa, LI Held, LR Craig, M Casanueva, M Casanueva, M Lynch, M Martínez, M Martínez, M Nei, M Pavličev, M Pavličev, M Pigliucci, M Pigliucci, M Pigliucci, M Pigliucci, M Pigliucci, M Rebeiz, MD Laubichler, MD Laubichler, MD Laubichler, MJ West-Eberhard, MW Kirschner, N Eldredge, N Eldredge, N Irie, N Shubin, P Bateson, P Feyerabend, R Amundson, R Bonduriansky, R Bonduriansky, R Diogo, RA Raff, RG Delisle, RG Delisle, RG Winther, RJ Sommer, RM Burian, S Handschuh, S Oyama, SA Newman, SA Newman, SB Carroll, SB Carroll, SF Gilbert, SH Kellert, SJ Gould, SJ Gould, SM Stanley, T Ingold, T Lewens, T Pievani, T Pievani, T Pievani, T Pradeu, U Dieckmann, U Kutschera, VB Smocovitis, W Arthur, W Arthur, W Arthur, W Callebaut   +144 more
core   +1 more source

Fossil constraints on the origin and evolution of Platyhelminthes are surprisingly concordant with modern molecular phylogenies [PDF]

Zoologia (Curitiba)
Trace fossils preserved with fossil worm-shaped remains suggest the presence of free-living flatworms during the Ordovician at the latest and their occurrence in terrestrial environments during the Permian.
Kenneth De Baets, Paula Dentzien-Dias, John Warren Huntley, Maarten P.M. Vanhove, Weronika Łaska, Aleksandra Skawina, Niels W.L. Van Steenkiste, Karina Vanadzina   +7 more
doaj   +1 more source

Testing for a facultative locomotor mode in the acquisition of archosaur bipedality [PDF]

Royal Society Open Science, 2019
Bipedal locomotion is a defining characteristic of humans and birds and has a profound effect on how these groups interact with their environment.
Luke R. Grinham, Collin S. VanBuren, David B. Norman   +2 more
doaj   +1 more source

charisma: An R package to perform reproducible colour characterization of digital images for biological studies

Methods in Ecology and Evolution, EarlyView.
Abstract Advances in digital imaging and software tools have provided increasingly accessible datasets and methods for analysing colour evolution. Despite the variety of computational packages available, most rely on colour classification before running analyses.
Shawn T. Schwartz, Whitney L. E. Tsai, Elizabeth A. Karan, Mark S. Juhn, Allison J. Shultz, John E. McCormack, Thomas B. Smith, Michael E. Alfaro   +7 more
wiley   +1 more source

The variability of giraffe skull morphology

Journal of Anatomy, EarlyView.
What does giraffe skull shape tell us about their development and evolution? Abstract Giraffe (Giraffa spp.) are among the most unique and charismatic extant animals, largely due to their distinct morphology. The evolutionary and developmental origin of ossicones is a key factor in giraffid biology, yet other features building their characteristic head
Nikolaos Kargopoulos, Jesús Marugán‐Lobón, Anusuya Chinsamy‐Turan, Bernard R. Agwanda, Michael Butler Brown, Stephanie Fennessy, Sara Ferguson, Rigardt Hoffman, Fredrick Lala, Arthur Muneza, Ogeto Mwebi, Moses Otiende, Alice Petzold, Sven Winter, Abdoul Razack Moussa Zabeirou, Julian Fennessy   +15 more
wiley   +1 more source

The C-value enigma and timing of the Cambrian explosion

, 2008
The Cambrian explosion is a grand challenge to science today and involves multidisciplinary study. This event is generally believed as a result of genetic innovations, environmental factors and ecological interactions, even though there are many ...
Adami, Bousso, Bromham, Carter, Conway Morris, Davidson, Davidson, Dirson Jian Li, Gregory, Hedges, Kauffman, Knoll, Knoll, Kumar, Larroux, Li, Li, Lynch, Mattick, Mattick, Mojzsis, Peltier, Peterson, Sharov, Shengli Zhang, Shmulevich, Shu, Trevors, Valentine, Wada   +29 more
core   +1 more source