Results 11 to 20 of about 4,167 (198)

Herbivory Dominates the Spring Diet of American Black Bears (<i>Ursus americanus</i>) in a Wood Bison (<i>Bison bison athabascae</i>) Neonatal Range, Suggesting Minimal Bison Consumption. [PDF]

Ecol Evol
In this study, we used scat analysis and DNA metabarcoding to analyze the spring diet of black bears in the neonatal range of a small, threatened wood bison herd in northeast Alberta to assess predation risk of neonate bison. Our results suggest that consumption rates of bison are low and that predation risk to neonate wood bison, during the RLBH's ...
Sharp ME, Nielsen SE, Edwards MA.
europepmc   +2 more sources

The PteridoPortal: A publicly accessible collection of over three million records of extant and extinct pteridophytes. [PDF]

Appl Plant Sci
Abstract Premise Pteridophytes—vascular land plants that disperse by spores—are a powerful system for studying plant evolution, particularly with respect to the impact of abiotic factors on evolutionary trajectories through deep time. However, our ability to use pteridophytes to investigate such questions—or to capitalize on the ecological and ...
Rothfels CJ, Lee J, Sundue MA, Smith AR, Kasameyer A, Gross J, Holman G, Hu S, von Konrat M, Sessa EB, Watson K, Weakley A, Zhang L, Gensel P, Hassler M, Pearson KD, Gilbert E, Burnham RJ, Rabeler RK, Sweeney P, Vasco A, Testo W, Giblin DE, Ickert-Bond SM, Landis M, Link-Perez M, Livshultz T, Miller I, Neefus C, Pigg K, Power M, Prather A, Rehman T, Struwe L, Vincent M, Weiblen G, Whitfeld T, Windham MD, Yatskievych G, Liston A, Makings E, Pryer KM, Strömberg C, Atri E, Best J, Glasspool I, Huiet L, Johnson E, King MR, Klymiuk A, Lupia R, Majure LC, McCormick CA, McCourt R, Oberreiter S, Perkins KD, Rodriguez Y, Smith C, Solomon J, Teisher J, Ford-Werntz D, Fuehrding-Potschkat P, Little H, Ranker TA, Schuettpelz E, Tribble CM, Erwin DM, Looy CV.   +67 more
europepmc   +2 more sources

Variation in stable carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope compositions along antlers of Qamanirjuaq caribou (Rangifer tarandus groenlandicus). [PDF]

Ecol Evol
Stable isotopes in antler tissue may provide a non‐lethal means of studying short and long‐term changes in caribou ecology. Carbon and Nitrogen isotopes of antler collagen showed variation from pedicle to tip and varied among the individuals sampled.
Brenning M, Longstaffe FJ, Fraser D.
europepmc   +2 more sources

Chemical profiling and antioxidant activity of Equisetum ramosissimum Desf. stem extract, a potential traditional medicinal plant for urinary tract infections

Future Journal of Pharmaceutical Sciences, 2021
Background Equisetum ramosissimum Desf. (E. ramosissimum) is a widely used traditional medicinal plant to treat urinary tract infections (UTIs) by ethnic people throughout the world.
Jeyalatchagan Sureshkumar, Singamoorthy Amalraj, Ramar Murugan, Anantharaj Tamilselvan, Jayaraj Krupa, Venkatraman Sriramavaratharajan, Shailendra S. Gurav, Muniappan Ayyanar   +7 more
doaj   +1 more source

Кислотно-основные свойства кремнийсодержащих соединений, выделенных из хвощей (Equisetum Equisetaceae)

Известия вузов: Прикладная химия и биотехнология, 2020
О.Д. Арефьева
doaj   +2 more sources

The results of the field accounting of medicinal plants in the forest and forest-steppe zones of Central Russia [PDF]

E3S Web of Conferences, 2023
To assess the potential of the raw material base of medicinal plants and search for new plant sources of biologically active substances, it is necessary to monitor and record the biological diversity of plants, their number and abundance in natural plant
Maslyakov V.Yu., Gryaznov M.Yu.
doaj   +1 more source

Paleometagenomics reveals environmental microbiome response to vegetation changes in northern Siberia over the millennia

Environmental DNA, Volume 5, Issue 6, Page 1252-1264, November 2023., 2023
We integrated taxonomic with functional gene analysis, which enabled to shed light not only on community compositions but also on long‐term eco‐physiological adaptations and ecosystem functioning. Various genes coding enzymes responsible for biomass degradation, carbon metabolism, and adaptation to environmental stress were identified and traced over ...
Amedea Perfumo, Uğur Çabuk, Luise Schulte, Jérémy Courtin, Lars Harms, Kathleen R. Stoof‐Leichsenring, Ulrike Herzschuh   +6 more
wiley   +1 more source

A new species of the equisetalean plant Equicalastrobus from the Middle Triassic of Argentina [PDF]

Acta Palaeontologica Polonica
We present a morphological-systematic study of new fossil specimens of equisetaleans (horsetails) from the Cortaderita Formation, Sorocayense Group, Middle Triassic, Cuyana Basin, southwest of the San Juan Province, Argentina.
JANO NEHUÉN PROCOPIO RODRÍGUEZ, JOSEFINA BODNAR, MARISOL BELTRÁN   +2 more
doaj   +1 more source

Deductive automated pollen classification in environmental samples via exploratory deep learning and imaging flow cytometry

New Phytologist, Volume 240, Issue 3, Page 1305-1326, November 2023., 2023
Summary Pollen and tracheophyte spores are ubiquitous environmental indicators at local and global scales. Palynology is typically performed manually by microscopic analysis; a specialised and time‐consuming task limited in taxonomical precision and sampling frequency, therefore restricting data quality used to inform climate change and pollen ...
Claire M. Barnes, Ann L. Power, Daniel G. Barber, Richard K. Tennant, Richard T. Jones, G. Rob Lee, Jackie Hatton, Angela Elliott, Joana Zaragoza‐Castells, Stephen M. Haley, Huw D. Summers, Minh Doan, Anne E. Carpenter, Paul Rees, John Love   +14 more
wiley   +1 more source

Is there silicon in flowers and what does it tell us?

Ecology and Evolution, Volume 13, Issue 10, October 2023., 2023
Whether flowers accumulate Si and what the implications may be was largely unknown. We analysed the flowers separated into their different anatomical parts, and leaves of different taxa. We conclude that flowers contain Si, in large amounts for some species, and hence the function of this element warrants more attention.
Jonas Schoelynck, Petra De Block, Eva Van Dyck, Julia Cooke   +3 more
wiley   +1 more source