Results 41 to 50 of about 8,169 (175)

Improving plant DNA metabarcoding accuracy with ecological filters and Angiosperms353: Field and pollen microscopy validation

open access: yesApplications in Plant Sciences, Volume 13, Issue 5, September-October 2025.
Abstract Premise Metabarcoding has become a successful tool for the identification of species in ecological assemblages. However, the usefulness of metabarcoding for identifying plant species has been hampered due to a lack of universal gene regions that work across all taxa, limiting the applications of metabarcoding in ecology.
Reed Clark Benkendorf   +5 more
wiley   +1 more source

Downregulation of major histocompatibility complex class I in bovine papillomas [PDF]

open access: yes, 2004
Bovine papillomavirus (BPV) induces papillomas in cattle; in the great majority of cases, these regress due to the host immune response, but they can persist and progress to malignancy.
Araibi, E.H.   +3 more
core   +1 more source

Contrasting Species Richness in Patches of Alternative Foundation Species Suggests a Framework for Understanding Species of Unusual Effect

open access: yesJournal of Vegetation Science, Volume 36, Issue 5, September/October 2025.
In a southeastern USA pine savanna, groundcover patches dominated by bracken ferns or gallberry shrubs have lower diversity relative to native bunchgrass areas. We hypothesize that relative to one another at our site, whereas bunchgrasses are diversity‐enhancing Species of Unusual Effect (SUEs), bracken and gallberry are diversity‐inhibiting SUEs—each ...
Carrie A. Barker, Kyle E. Harms
wiley   +1 more source

Chemotaxis of Bracken Spermatozoids : Implications of Electrochemical Orientation [PDF]

open access: yes, 1957
1. The chemotaxis of bracken spermatozoids involves their precise orientation in a gradient of bimalate or a few other similar ions. When a voltage gradient is established in a sperm suspension containing bimalate or other chemotactically active ions, a ...
Brokaw, C. J.
core   +1 more source

Long‐term water dynamics in the Lascaux cave karst: Impact of tree removal

open access: yesVadose Zone Journal, Volume 24, Issue 4, July/August 2025.
Abstract Quantifying the hydrological dynamics of unsaturated karst environments in relation to their native vegetation is a critical step in developing adaptation strategies. This study investigates the effect of tree removal on water dynamics in the Lascaux karst hill in southwestern France.
Marie Larcanché   +9 more
wiley   +1 more source

A note on the diet of the Tasmanian Aborigines [PDF]

open access: yes, 1979
The Tasmanian Aboriginal diet was drawn from marine and non-marine environments, in which food resources varied according to habitat. Alpine and rain forest environments provided a limited supply of plant food, whereas the wet and dry schlerophyll ...
Cane, Scott   +2 more
core  

Impacts of Drought on Water Fluxes and Water‐Use Efficiency in an Age‐Sequence of Temperate Conifer Forests

open access: yesHydrological Processes, Volume 39, Issue 5, May 2025.
This study examined long‐term (2008–2021) water flux data in three different age (83‐, 48‐ and 20‐year‐old) plantation forests in the Great Lakes region in Canada. The mean annual evapotranspiration (ET) values were 465 ± 41, 466 ± 32 and 403 ± 21 mm year−1 in the 83‐, 48‐ and 20‐year‐old stands, respectively, with the highest ET observed in the 83 ...
Elizabeth Arango Ruda, M. Altaf Arain
wiley   +1 more source

Ecological study of Barrett Domain, New Plymouth [PDF]

open access: yes, 2012
An ecological survey of Barrett Domain (New Plymouth) was conducted by the Environmental Research Institute, University of Waikato, for the New Plymouth District Council.
Bylsma, Rebecca Johanna   +1 more
core   +1 more source

The social–ecological fabric of freshwater fish management: Accounting for feedback loops in human–fish interactions

open access: yesEcosphere, Volume 16, Issue 4, April 2025.
Abstract A holistic view of nature, which situates human relationships and actions within ecosystems, can broaden our understanding of environmental problems and expand the scope and efficacy of potential solutions. Social–ecological systems (SES) research attempts to take this broad perspective.
Robin Holmes   +4 more
wiley   +1 more source

Human papillomavirus infection in Brazilian women with normal cervical cytology [PDF]

open access: yes, 2012
We examined the prevalence of human papillomavirus (HPV) infection in a sample of Brazilian women presenting normal cervical cytology. Possible interactions between patient characteristics and HPV infection were analyzed in order to provide background ...
Beçak, Willy   +11 more
core   +2 more sources

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