Results 71 to 80 of about 16,115 (265)

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, EarlyView.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source

Pollen foraging preferences in honey bees and the nutrient profiles of the pollen

Scientific Reports
Honey bees are important insect pollinators that provide critical pollination services to fruit and nut crops in the US. They face challenges likely due to pressures associated with agricultural intensification related habitat loss.
Seiji C. Yokota, Corey Broeckling, Arathi H.S. (Seshadri)   +2 more
doaj   +1 more source

Pollen Release Dynamics and Daily Patterns of Pollen-Collecting Activity of Honeybee Apis mellifera and Bumblebee Bombus lantschouensis in Solar Greenhouse

Insects, 2019
Pollen is important not only for pollination and fertilization of plants, but also for colony development of bee pollinators. Anther dehiscence determines the available pollen that can be collected by foragers.
Hong Zhang, Zhiyong Zhou, Jiandong An
doaj   +1 more source

Environmentally induced dynamics between intraindividual variation and trait means across vegetative, phenological, and floral traits

American Journal of Botany, EarlyView.
Abstract Premise Intraindividual variation in reiterated structures (e.g., leaves) represents an important dimension of phenotypic variation that contributes to functional diversity and the dynamics of ecological communities. It can be expressed differently across plant traits, but how environmental drivers affect intraindividual variation in different
Charlotte Møller, Martí March‐Salas, Mar Sobral, Judith Haase, Pieter De Frenne, J. F. Scheepens   +5 more
wiley   +1 more source

Seasonal variation in wind speed and oceanic salt spray favors delayed reproduction in coastal yellow monkeyflowers

American Journal of Botany, EarlyView.
Abstract Premise The optimal timing of reproduction depends on the relative risk and benefit of continued growth. These risks and benefits depend on the local environment, which varies seasonally. While temperature and water availability are well‐studied selective agents on reproductive timing, less is known about other seasonally variable factors ...
Katherine Toll, Chloe Crockett, Lauren Tocci, David B. Lowry   +3 more
wiley   +1 more source

Bombus terrestris Prefer Mixed-Pollen Diets for a Better Colony Performance: A Laboratory Study

Insects
Pollen is a major source of proteins and lipids for bumblebees. The nutritional content of pollen may differ from source plants, ultimately affecting colony development.
Ziyu Zhou, Hong Zhang, Shibonage K. Mashilingi, Chunting Jie, Baodi Guo, Yi Guo, Xiao Hu, Shahid Iqbal, Bingshuai Wei, Yanjie Liu, Jiandong An   +10 more
doaj   +1 more source

Nanostructured Deep Eutectic Systems in Healthcare: From Bioactive Solvents to Intelligent Biointerfaces, Wearables, and AI‐Driven Design

Advanced NanoBiomed Research, EarlyView.
Beyond the green solvent paradigm, this review redefines Deep Eutectic Systems (DES) as programmable supramolecular nanoassemblies. We survey their biomedical convergence: stabilizing thermolabile mRNA to enable cold chain‐free logistics, reshaping transdermal microneedle delivery, enabling long‐term wearables via eutectogels, and utilizing Generative ...
Jeesu Moon, Min Seo Kim, Jae‐Seung Lee
wiley   +1 more source

Resource availability and competition shape pollinator trophic specialization in longleaf pine savannas

Basic and Applied Ecology
Realized trophic specialization, or the food resources with which a species interacts locally, is driven by a species fundamental niche, resource availability, and competition. However, the simultaneous effects of resource availability and competition on
Pablo Moreno-García, Johanna E. Freeman, Benjamin Baiser, Joshua W. Campbell, Daijiang Li   +4 more
doaj   +1 more source

Looking for hopeful purpose in England's environmental education policy: An analysis of the National Education Nature Park

British Educational Research Journal, EarlyView.
Abstract The intertwined crises of climate change, biodiversity loss and environmental degradation represent profound global challenges. Education holds a unique role in enabling all young people to navigate uncertainty, participate meaningfully in decision‐making and contribute to more just and sustainable ways of living.
Julie Robinson, Elizabeth A.C. Rushton, Emma Towers   +2 more
wiley   +1 more source

Notes on the Pollination of Plums [PDF]

Science, 1893
n ...
openaire   +3 more sources