Results 11 to 20 of about 274 (106)

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

Ecol 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]

J 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, Fuster-Alonso A, Ramírez F, Giménez J, García-Barcelona S, Macías D, Coll M, Navarro J.   +7 more
europepmc   +2 more sources

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

Ecol 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, Sanchez-Donoso I, Leonard JA, Rodríguez-Teijeiro JD, Vilà C.   +4 more
europepmc   +2 more sources

Aplicación de Isótopos estables e hidroquímica para la comprensión del sistema hidrológico en Laguna de Tiscapa. Managua, Nicaragua

Revista Científica de FAREM-Estelí, 2021
Isótopos estables (Deuterio y Oxígeno 18) e hidroquímica fueron utilizados como trazadores para determinar el origen del agua en el cráter de la Laguna de Tiscapa y sus interacciones con el agua subterránea y Lago Xolotlán, para esto se utilizaron 253 ...
Javier Barberena-Moncada, Iris Hurtado-García, Marlon Sirias-Silva   +2 more
doaj   +1 more source

Composición isotópica de la precipitación en el Valle de Querétaro, México

Tecnología y ciencias del agua, 2023
El uso de los isótopos estables del agua para determinar la relación entre la precipitación y la recarga/descarga del agua subterránea ha sido limitado en México. Una de las principales limitaciones es la falta de monitoreo de los isótopos estables de la
Luis González-Hita, Miguel A. Mejía-González, Blanca Carteño-Martinez, Juan C. Aparicio-González, Dustin S. Mañon-Flores   +4 more
doaj   +1 more source

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

Paleoceanography 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, Francisco J. Jiménez‐Espejo, Francesca Bulian, Francisco J. Sierro, Deborah Tangunan, Yasuhiro Takashimizu, Ana Luiza S. Albuquerque, Kaoru Kubota, Carlota Escutia, Richard D. Norris, Sidney R. Hemming, Ian R. Hall   +11 more
wiley   +1 more source

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

Ecology, 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, Friedrich Wolfgang Keppeler, Kirk O. Winemiller   +2 more
wiley   +1 more source

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

Limnology 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, Alejandro Hinojosa‐Corona, Andrew B. Gray, Juan Carlos Herguera, Julianna McDonnell, Michael V. Schaefer, Samantha C. Ying, Elizabeth Burke Watson   +7 more
wiley   +1 more source

Implementación del método para la determinación de isótopos estables de carbono (δ13C) en carbones mediante espectrometría de masas de relaciones isotópicas (IRMS)

Revista Investigaciones y Aplicaciones Nucleares, 2017
Este artículo describe el procedimiento para la determinación de la relación isotópica de carbono (13C/12C) expresado en delta (δ13C) en el intervalo de -46.6 ‰ a +37.63 ‰ mediante un sistema compuesto por un analizador elemental, acoplado a un ...
Maribel Moreno, Mary Luz Peña, Ricardo Álvarez   +2 more
doaj   +1 more source

Feeding habits and habitat of herbivorous mammals from the Early–Late Hemphillian (Miocene) of Costa Rica [PDF]

Acta Palaeontologica Polonica, 2018
Carbon and oxygen stable isotope values in the dental enamel of fossils were used to infer the diet and habitat of the extinct equids Calippus hondurensis, Dinohippus mexicanus, and Protohippus gidleyi, the gomphothere Gomphotherium hondurensis, and the ...
Víctor Adrián Pérez-Crespo, César A. Laurito, Joaquín Arroyo-Cabrales, Ana L. Valerio, Pedro Morales-Puente, Edith Cienfuegos-Alvarado, Francisco J. Otero   +6 more
doaj   +1 more source