Results 71 to 80 of about 108,052 (320)

Grass functional traits reflect the long history of fire and grazers in the savannas of Texas

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Understanding relationships among grass traits, fire, and herbivores may help improve conservation strategies for savannas that are threatened by novel disturbance regimes. Emerging theory, developed in Africa, emphasizes that functional traits of savanna grasses reflect the distinct ways that fire and grazers consume biomass ...
Ashish N. Nerlekar   +2 more
wiley   +1 more source

Exposures to pesticides and risk of cancer: Evaluation of recent epidemiological evidence in humans and paths forward

open access: yesInternational Journal of Cancer, Volume 152, Issue 5, Page 879-912, 1 March 2023., 2023
Abstract Knowledge of the role in cancer etiology of environmental exposures as pesticides is a prerequisite for primary prevention. We review 63 epidemiological studies on exposure to pesticides and cancer risk in humans published from 2017 to 2021, with emphasis on new findings, methodological approaches, and gaps in the existing literature.
Haleigh Cavalier   +2 more
wiley   +1 more source

Screening of tall fescue genotypes for relative water content and osmotic potential under drought stress

open access: yesGrassland Research, 2022
Background Tall fescue (Festuca arundinacea Schreb.) is an important cool‐season perennial grass. Its persistence and forage yield can be severely affected by drought stresses during the hot, dry summers of the southern USA.
Francis M. Kirigwi, Malay C. Saha
doaj   +1 more source

Diverse perennial circular forage systems are needed to foster resilience, ecosystem services, and socioeconomic benefits in agricultural landscapes

open access: yesGrassland Research, 2022
Prevailing agricultural systems dominated by annual crop monocultures, and the landscapes that contain them, lack resilience and multifunctionality. They are vulnerable to extreme weather events, contribute to degradation of soil, water, and air quality,
Valentin D. Picasso   +10 more
doaj   +1 more source

Fungi stabilize multi‐kingdom community in a high elevation timberline ecosystem

open access: yesiMeta, Volume 1, Issue 4, December 2022., 2022
Multi‐kingdom network construction increased network complexity. Multi‐kingdom network construction increased negative edge proportion. Fungi stabilized multi‐kingdom network structure. Fungi linked above‐ and below‐ground biota at the community level.
Teng Yang   +6 more
wiley   +1 more source

Functional profiles of soil microbial communities in the alpine and temperate grasslands of China

open access: yesGrassland Research, 2022
Grassland ecosystems in cold regions are typical of short growing seasons and limited primary productivity, rendering soil microorganisms as major ecosystem engineers in governing biogeochemical cycling.
Yunfeng Yang, Jizhong Zhou, Xue Guo
doaj   +1 more source

Dietary ecology of Smilodon across time and space: Additional perspectives from Smilodon gracilis and Smilodon fatalis in Florida

open access: yesThe Anatomical Record, EarlyView.
Dental microwear texture analysis of Smilodon samples from Florida's Pleistocene reveals moderate carcass utilization (like modern African lions) across space and time, with more subtle dietary shifts in response to fluctuating climates. Abstract Smilodon, the iconic saber‐toothed cat, was a Pleistocene apex predator comprised of three morphologically ...
Justin Pardo‐Judd, Larisa DeSantis
wiley   +1 more source

Strong parallel evidence of selection during switchgrass sward establishment in hybrid and lowland ecotypes

open access: yesGrassland Research, 2022
Background Switchgrass sward establishment results in up to 90% seedling mortality. The degree of selection during sward establishment has not been reported using modern genetic methods.
Neal W. Tilhou   +2 more
doaj   +1 more source

Inside the head of Crotalus durissus LINNAEUS, 1758 (Serpentes, Viperidae, Crotalinae): Macroscopic description of the brain with ontogenetic insights

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomy studies in vertebrates have garnered significant attention in recent years, particularly driven by advancements in computerized tomography imaging techniques. Nonetheless, these advancements remain largely constrained to specific vertebrate groups, notably mammals, birds, and fish, leaving studies in reptiles at an incipient stage.
Giordanna Issa Lucas, Angele Martins
wiley   +1 more source

Photothermal controls of vegetative dormancy in Poa secunda

open access: yesGrassland Research, 2022
Background Summer vegetative dormancy is a desirable trait in cool‐season grasses when they are interplanted with annual crops. Sandberg bluegrass (Poa secunda J.
Allen A. Chen   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy