Results 11 to 20 of about 774 (110)

Establishing an Ecuadorian Isoscape: The Importance of Baseline Strontium Data in a Volcanic Landscape. [PDF]

open access: yesAm J Biol Anthropol
ABSTRACT Objectives Strontium isotopes (87Sr/86Sr) have been used worldwide to track migrations and identify nonlocal individuals in the past. In South America, these studies often use comparative baseline maps, or isoscapes, established by samples from archaeological fauna and geologic formations. However, baseline research has focused on coastal Peru
Juengst SL, Alvarez MPO.
europepmc   +2 more sources

Human land-use changes the diets of sympatric native and invasive mammal species. [PDF]

open access: yesEcol Evol, 2023
We simultaneously study the diet of nine native and two invasive mammal species inhabiting three different anthropogenic land‐uses across six bioclimatic regions using environmental DNA and stable isotope analysis. We show that land‐use influences the trophic relationships in invaded communities.
Chiu-Werner A, Jones M.
europepmc   +2 more sources

Environmental and human factors shape the trophic ecology of a widespread marine predator. [PDF]

open access: yesJ Anim Ecol
Our study reveals how environmental factors and fishing pressure influence swordfish diet, highlighting trophic shifts under future climate scenarios. We provide a novel framework to strengthen our ability to plan for and manage the redistribution of species under global change ensuring that the energetic needs of predators are met.
Fernández-Corredor E   +7 more
europepmc   +2 more sources

Chromosomal Inversion Associated With Diet Differences in Common Quails Sharing Wintering Grounds. [PDF]

open access: yesEcol Evol
A large chromosomal inversion in common quails (Coturnix coturnix) is associated with phenotypic traits. In a wintering population in southern Spain, we found all three karyotypes coexisting but showing differences in migratory behavior and diet, as exemplified by the isotopic signature.
Vinagre-Izquierdo C   +4 more
europepmc   +2 more sources

Orbital Forcing and Evolution of the Southern African Monsoon From Late Miocene to Early Pliocene

open access: yesPaleoceanography and Paleoclimatology, Volume 38, Issue 9, September 2023., 2023
Abstract The late Miocene‐early Pliocene (7.4‐4.5 Ma) is a key interval in Earth's history where intense reorganization of atmospheric and ocean circulation occurred within a global cooling scenario. The Southern African monsoon (SAFM) potentially played an important role in climate systems variability during this interval.
Allana Queiroz de Azevedo   +11 more
wiley   +1 more source

Does invasion by armored catfish shift trophic ecology of native fishes? Evidence from stable isotope analysis

open access: yesEcology, Volume 104, Issue 5, May 2023., 2023
Abstract Popular as aquarium fish, armored catfishes from South America (Pterygoplichthys spp.) have been introduced and become invasive in tropical and subtropical regions worldwide. These ecosystem engineers can deplete basal resources (e.g., periphyton and detritus), with potential negative effects for native fauna. We studied the trophic ecology of
Yasmín Quintana   +2 more
wiley   +1 more source

Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting

open access: yesLimnology and Oceanography, Volume 67, Issue S2, Page S6-S18, November 2022., 2022
Abstract As coastal ecosystems become widely recognized for their capacity to sequester carbon (blue carbon), standard accounting methodologies for the generation of carbon credits are being developed. To ensure the applicability of these standards across blue carbon ecosystems, we investigated organic carbon provenance and burial in salt marshes and ...
Johannes Renke Krause   +7 more
wiley   +1 more source

Blockchain and Quantum Technologies for Securing the Global Nuclear Supply Chain: Synergies, Applications, Technical Challenges and Opportunities

open access: yesJournal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
wiley   +1 more source

Stable isotope analysis indicates partial mycoheterotrophy in arbuscular mycorrhizal woody seedlings in tropical forests

open access: yesFunctional Ecology, Volume 38, Issue 12, Page 2720-2733, December 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Chlorophyllous plants exhibiting partial mycoheterotrophy obtain carbon through mycorrhizal interactions in addition to photosynthesis. In arbuscular mycorrhizal (AM) plants, the Paris‐morphotype (i.e.
Franziska E. Zahn   +3 more
wiley   +1 more source

Vegetative stage and soil horizon respectively determine direction and magnitude of rhizosphere priming effects in contrasting tree line soils

open access: yesFunctional Ecology, Volume 38, Issue 9, Page 1984-2002, September 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Tree lines in high latitudes and high altitudes are considered sentinels of global change. This manifests in accelerated encroachment of trees and shrubs and enhanced plant productivity, with currently unknown implications for the carbon balance of these biomes.
Jennifer Michel   +4 more
wiley   +1 more source

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