Results 61 to 70 of about 71,969 (296)

Origin and Development of Managed Meadows in Sweden: A Review

Rural Landscapes: Society Environment History, 2020
This review concerns when and why infield meadows developed, i.e. enclosed land, constructed and managed for production of livestock fodder. Meadows have been associated with ‘stalling’ of livestock, in turn associated with, for example, protection from ...
Ove Eriksson
doaj   +1 more source

Effects of prescribed burning on avian foraging ecology and arthropod abundance in sagebrush-grassland

, 1984
Prescribed burning in western sagebrush-grasslands has been used primarily to eradicate sagebrush (Artemisia spp.) and, consequently, increase the growth of herbaceous vegetation. Although fire has been used commonly, little is known about its effects on
Winter, Brian
core   +1 more source

Evaluating Morphological Methods for Sex Estimation on Isolated Human Skeletal Materials: Comparisons of Accuracies between German and South African Skeletal Collections

, 2022
Objectives: The focus of this research is to evaluate the sex estimation methods on isolated human materials by applying morphological methods published in various forensic and anthropological literature on different skeletal series.
Hummel, Susanne, Grosskopf, Birgit, Gupta, Avinash; 1Department of Historical Anthropology and Human Ecology, University of Göttingen, 37073 Göttingen, Germany, Billings, Brendon K.; 2Faculty of Health Sciences, School of Anatomical Sciences, University of the Witwatersrand, Parktown, Johannesburg 2193, South Africa, Billings, Brendon K., Hummel, Susanne; 1Department of Historical Anthropology and Human Ecology, University of Göttingen, 37073 Göttingen, Germany, Grosskopf, Birgit; 1Department of Historical Anthropology and Human Ecology, University of Göttingen, 37073 Göttingen, Germany, Gupta, Avinash   +7 more
core   +1 more source

Large‐Scale Genomics Reveals Three‐Source Ancestry and Layered Adaptation to High Altitude in Tibetan Chickens

Advanced Science, EarlyView.
Whole‐genome analysis of 1,054 chickens reveals three ancestral sources (NWC, SYA, and SHF) with distinct temporal entry patterns into the Tibetan Plateau. Route‐specific selection scans, calibrated against a demographic null, suggest complementary functional enrichments—vascular homeostasis (NWC), calcium signaling and cardiac adaptation (SYA), and ...
Zongyi Zhao, Ruixue Nie, Hailu Fan, Tenzin Ngodroup, Li Zhu, Hongbin Pan, Bo Zhang, Hao Zhang   +7 more
wiley   +1 more source

Historical Contingency in Microbial Ecology and Evolution [PDF]

, 2023
The responses of biological systems to perturbations can depend on past events, a phenomenon known as historical contingency. The fitness of a new species in a community, or of a new mutation in a genome, is always evaluated within the existing context ...
Debray, Reena Reed
core  

Streptavidins Coordinate Biotin Sequestration and Self‐Resistance Within a Biotin‐Pathway Antibiotic Network

Advanced Science, EarlyView.
A conserved genomic region between two streptavidin genes in Streptomyces packages biosynthetic gene clusters for diverse biotin‐pathway antibiotics: acidomycin, stravidin, the new non‐proteinogenic amino acid ANDA, and the new BioA inhibitor α‐methyl‐KAPA.
Sumire Kurosawa, Jingjun Mo, Xiaotong Diao, Feng Xie, Tingting Wang, Haowen Zhao, Dalei Wu, Rolf Müller, Chengzhang Fu   +8 more
wiley   +1 more source

Introgressed Variation in TaMYB7‐A1 Drives Graded Dormancy and Climate‐Adaptive Pre‐Harvest Sprouting Resistance in Wheat

Advanced Science, EarlyView.
TaMYB7‐A1 directly activates TaABI5 to enhance ABA signaling and regulate ABA‐GA homeostasis, enforcing seed dormancy. Its superior allele, derived from wild einkorn introgression, harbors a MITE insertion that elevates expression and two amino acid substitutions that enhance transcriptional activity, collectively generating graded PHS resistance for ...
Hao Wang, Dongzhi Wang, Yafei Guo, Qi Zheng, Min Zhang, James Simmonds, Jian Hou, Xuemei Liu, Xuelei Lin, Xiaomin Bie, Xiansheng Zhang, Xiaohui Li, Yuan Chen, Xueyong Zhang, Cristobal Uauy, Fei Lu, Chengcai Chu, Zhixi Tian, Jun Xiao   +18 more
wiley   +1 more source

Unnatural Oceans

Scientia Marina, 2001
Ecological understanding of the oceans is based on an unnatural mix of mostly small species whose trophic relations are distorted to an unknown degree by the overfishing of megafauna including sharks, sea turtles, sea cows, seals, and whales.
Jeremy B.C. Jackson, Enric Sala
doaj   +1 more source

Achieving High‐Density and Stress‐Resilient Maize Breeding Via Germplasm Innovation

Advanced Science, EarlyView.
Global population growth and climate change have exacerbated the global food crisis. This perspective presents a conceptual framework focusing on enhancing population advantages. Several novel breeding objectives are proposed to improve density tolerance and stress resistance for yield improvement.
Xinlong Li, Yongqiang Chen, Dong Ding, Xuehai Zhang, Xuxiang Jia, Zhanhui Zhang, Yafei Wang, Weihua Li, Hui Zhang, Jihua Tang   +9 more
wiley   +1 more source

Historical ecology of anadromous houting (Coregonus oxyrinchus / C. lavaretus) in the Rhine-Meuse delta

Global Ecology and Conservation
Houting (Coregonus oxyrinchus / C. lavaretus) is a facultative anadromous fish species that gradually declined and finally extirpated from the Rhine-Meuse delta during the first half of the 20th century, together with several other migratory fish species.
R. Kroes, E.E. van Loon, P.F.M. Verdonschot, Y. Winkel, A.M. Overduin-de Vries, H.G. van der Geest   +5 more
doaj   +1 more source