Results 71 to 80 of about 6,008 (254)

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

Journal of Quaternary Science, EarlyView.
ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

Development and adoption of Kernza—A perennial grain crop for sustainable agriculture

Plants, People, Planet
Societal Impact Statement Annual cereal grains account for ~50% of human food calories, but cultivation of these crops has resulted in major environmental and social issues worldwide.
Jessica L. Gutknecht, James A. Anderson, George Annor, Prabin Bajgain, Timothy E. Crews, Colin Cureton, Lee DeHaan, Erin Meier, Tessa Peters, Valentín Picasso, Evelyn C. Reilly, Aaron Reser, Tara Ritter, Aubrey Streit Krug, Nicole Tautges, Jacob M. Jungers   +15 more
doaj   +1 more source

A Land Potential‐Based Framework for Wind Erosion and Sand and Dust Storm Source Mitigation

Land Degradation &Development, EarlyView.
ABSTRACT Wind erosion and sand and dust storms are a global challenge. While many management practices to mitigate sources of wind erosion and sand and dust storms have been documented, existing guidance largely emphasizes what practices are available, with limited information on where and under what ecological conditions they should be applied.
Kristina E. Young, Nicholas P. Webb, Brandon T. Bestelmeyer, Matthew A. Bowker, Laura M. Burkett, Brandon L. Edwards, Jeffrey E. Herrick, Carrie‐Ann Houdeshell, Sarah E. McCord   +8 more
wiley   +1 more source

Physical properties of soil cultivated with Jatropha curcas and associated green vegetation covers

Revista Ambiente & Água, 2013
The cultivation of physic nut (Jatropha curcas L.) is a sustainable option for biodiesel production due to its adaptation to different agro-ecological conditions and its high content of non-edible oil grains.
Willian José Ferreira, Getulio Teixeira Batista, Marcelo dos Santos Targa, Cristina Maria de Castro, Antonio Carlos Pires Devide   +4 more
doaj   +1 more source

Past, present and future of local crop evolution

PLANTS, PEOPLE, PLANET, EarlyView.
Promoting agrobiodiversity is a promising strategy for mitigating the negative effects of climate change on global food security. We highlight the central role evolutionary processes play in harnessing the potential of local crops by integrating genomics, archaeology, ethnobotany and traditional ecological knowledge (TEK).
Nataly Allasi Canales, Philippa Ryan, Amy Jackson, Hong Phuong Le, James Borrell, Aaron Davis, Rafal M. Gutaker   +6 more
wiley   +1 more source

The pistil as a traffic light: Yellow‐to‐red color change likely influences pollinator visitation patterns in Saxifraga fortunei (Saxifragaceae)

PLANTS, PEOPLE, PLANET, EarlyView.
Flowers can communicate reproductive status to pollinators through visual cues. In Saxifraga fortunei, pistils often changed from yellow to red after pollination, and hoverflies and honeybees preferentially visited flowers with yellow pistils. This pattern suggests that a post‐pollination color shift confined to the pistil can reduce revisits to ...
Kazuma Takizawa, Masayasu Furukawa, Kenji Suetsugu   +2 more
wiley   +1 more source

Sampling for Socially‐Inclusive Adoption Studies (SSAS): A new interdisciplinary sampling method for DNA‐fingerprinting‐based crop varietal adoption studies

PLANTS, PEOPLE, PLANET, EarlyView.
DNA fingerprinting is becoming the standard measurement procedure in crop adoption studies in the Global South, yet the lack of systematic and intentional sampling regarding which farmer to go to the plot with may bias results from these methods. We introduce a methodological innovation, Sampling for Socially Inclusive Adoption Studies (SSAS), to offer
Yoselyn Hernandez Chaves, Luis A. Sanchez Chacon, Martina Occelli, Sergio Puerto, Ruth Castro‐Vásquez, Bethany F. Econopouly, Joyce Estrada‐Gamboa, Erica Lopez, Vanessa Mora, Deborah Rubin, Kelly R. Robbins, Roberto Camacho, Hale A. Tufan   +12 more
wiley   +1 more source

Perennial grain crops: A synthesis of ecology and plant breeding

Renewable Agriculture and Food Systems, 2005
AbstractPerennial grain crops would address many agricultural problems, including soil erosion, nutrient loss and pesticide contamination. Doubts about the possibility of perennial grain crops rest upon two assumptions: (1) that the relationship between yield and longevity is a fixed function that cannot be influenced by selection, mutation or ...
L.R. DeHaan, D.L. Van Tassel, T.S. Cox
openaire   +1 more source

Perennial Baki™ Bean Safety for Human Consumption: Evidence from an Analysis of Heavy Metals, Folate, Canavanine, Mycotoxins, Microorganisms and Pesticides

Molecules
Global food production relies on annual grain crops. The reliability and productivity of these crops are threatened by adaptations to climate change and unsustainable rates of soil loss associated with their cultivation.
Evan B. Craine, Muhammet Şakiroğlu, Spencer Barriball, Tessa E. Peters, Brandon Schlautman   +4 more
doaj   +1 more source