Results 101 to 110 of about 196,280 (287)

Effects of abandonment on plant diversity in seminatural grasslands along soil and climate gradients [PDF]

, 2017
Questions: What are the effects of abandonment on plant diversity in semi-natural grasslands? Do the effects of abandonment on taxonomic and functional diversity vary along environmental gradients of climate and soil?
Hovstad, Knut Anders, Johansen, Line, Taugourdeau, Simon, Wehn, Solvi   +3 more
core   +2 more sources

Multitarget Recognition of Flower Images Based on Lightweight Deep Neural Network and Transfer Learning

Advanced Intelligent Systems, EarlyView.
This article proposes a lightweight YOLOv4‐based detection model using MobileNetV3 or CSPDarknet53_tiny, achieving 30+ FPS and higher mAP. It also presents a ShuffleNet‐based classification model with transfer learning and GAN‐augmented images, improving generalization and accuracy.
Qingyang Liu, Yanrong Hu, Hongjiu Liu
wiley   +1 more source

Intraspecific variation in stomatal architecture, gas exchange, and drought response of a dominant prairie grass sourced from broad climatic gradients

American Journal of Botany, EarlyView.
Abstract Premise Understanding how plant populations adapt to water limitation through stomatal traits is key to predicting drought responses. The dominant C4 grass Andropogon gerardi, distributed across sharp climate gradients in North America, offers an excellent focal species to study stomatal architecture (size and density).
Jack Sytsma, Allison Ricker, Helen Winters, Brian Maricle, Ryann Patterson, Kian Fogarty, Loretta Johnson   +6 more
wiley   +1 more source

Exploring the relationship between remote sensing-based vegetation indices and land surface temperature through quantitative analysis [PDF]

Journal of the Bulgarian Geographical Society
In an era of rapid urbanization, understanding the complex relationship between vegeta-tion dynamics and land surface temperature (LST) is crucial for addressing the challeng-es posed by urban heat island (UHI) and promoting sustainable urban development.
Ibrahim Olatunji Raufu
doaj   +3 more sources

Mapping climatic risks in the EU agriculture [PDF]

Replaced with revised version of paper 11/18/08.Agrometeorological models, climatic risk, European Union, Vegetation indices, Environmental Economics and Policy, Risk and Uncertainty,
Bielza, Maria, Conte, Costanza G., Dittmann, Christoph, Gallego, Javier, Stroblmair, Josef   +4 more
core   +1 more source

Food-web structure in relation to environmental gradients and predator-prey ratios in tank-bromeliad ecosystems [PDF]

, 2013
Little is known of how linkage patterns between species change along environmental gradients. The small, spatially discrete food webs inhabiting tank-bromeliads provide an excellent opportunity to analyse patterns of community diversity and food-web ...
A Compin, AJ Gilbert, Alain Dejean, Anna Dornhaus, B Oertli, B Vondracek, BA Richardson, BC Rall, Bruno Corbara, C Fontaine, C Fontaine, C Leroy, CJ Paradise, CR Townsend, Céline Leroy, DM Post, DS Srivastava, G Valladares, GQ Romero, J Bascompte, J Bascompte, J Jabiol, J-F Carrias, J-F Carrias, JA Dunne, Jean-François Carrias, JM Chase, JM Tylianakis, JW Fox, Laurent Pélozuelo, LP Lounibos, M Jocqué, M Kondoh, MA Rodríguez-Gironés, NAC Marino, O Brouard, O Brouard, Olivier Dézerald, P Armbruster, R Céréghino, R Céréghino, RL Vannote, Régis Céréghino, S Declerck, S Drakare, TJ Givnish, WA Ryberg   +46 more
core   +5 more sources

Dimorphic enantiostyly and its function for pollination by carpenter bees in a pollen‐rewarding Caribbean bloodwort

American Journal of Botany, EarlyView.
Abstract Premise Flowers that present their anthers and stigma in close proximity can achieve precise animal‐mediated pollen transfer, but risk self‐pollination. One evolutionary solution is reciprocal herkogamy. Reciprocity of anther and style positions among different plants (i.e., a genetic dimorphism) is common in distylous plants, but very rare in
Steven D. Johnson, Jeremy J. Midgley, Luis G. Bocourt‐Hernandez, F. G. Loiret, Patricia Ortega‐Rodés, Nicola Illing   +5 more
wiley   +1 more source

Hydrobiological service for observations and control of surface waters in the USSR [PDF]

, 1980
Technological progress, having reached in our time an unprecedented speed, is still increasing the rate of mineral extraction, industrial construction, and the mastering of new kinds of energy is growing.
Abakumov, V.A., Gasilina, N.K., Izrael, Yu. A.   +2 more
core  

Differences in cynomolgus macaque populations used for infectious disease research

Animal Models and Experimental Medicine, EarlyView.
Cynomolgus macaques, a species of Old World primate native to southeastern and eastern Asia and the island of Mauritius, are one of the most important nonhuman primate models for infectious disease. Research into the population genetics of cynomolgus macaques has found significant differences between macaques native to different areas, particularly ...
Darcy Quist, Kimimuepigha Ebisine, Emma Kennedy, Stuart Dowall, Mike Dennis   +4 more
wiley   +1 more source

Irrigated Acreage in Georgia's Altamaha River Basin During the Drought Year 2000 [PDF]

, 2005
Using a "mixed media" approach, which tracts changes in pixel (color) values over the summer indicating changes from dry land to wet land, we have developed estimates for irrigated acreage in the Altamaha River Basin that draws water from ground water or
Krawee Ackaramongkolrotn, Peter Terrebonne, Ronald G. Cummings   +2 more
core