Results 11 to 20 of about 8,183 (131)

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

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

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

Seasonal dietary niche contraction in coexisting Neotropical frugivorous bats (Stenodermatinae)

Biotropica, Volume 52, Issue 4, Page 749-757, July 2020., 2020
Abstract Tropical dry forests are characterized by punctuated seasonal precipitation patterns that drive primary production and the availability of fruits, seeds, flowers, and insects throughout the year. In environments in which the quantity and quality of food resources varies seasonally, consumers should adjust their foraging behavior to maximize ...
Jeremy Ryan Shipley, Cornelia W. Twining
wiley   +1 more source

Diet and habitat of unique individuals of Dinohippus mexicanus and Neohipparion eurystyle (Equidae) from the late Hemphillian (Hh3) of Guanajuato and Jalisco, central Mexico: stable isotope studies

Revista Mexicana de Ciencias Geológicas, 2017
En este trabajo se analizó un molar de Dinohippus mexicanus y uno más de Neohipparion eurystyle, ambos recolectados de la localidad de Rancho el Ocote, en la Cuenca de San Miguel de Allende; de la misma forma también se analizaron un molar de cada una ...
Víctor Adrián Pérez-Crespo, Oscar Carranza-Castañeda, Joaquín Arroyo-Cabrales, Pedro Morales-Puente, Edith Cienfuegos-Alvarado, Francisco J. Otero   +5 more
doaj   +1 more source

Fraccionamiento isotópico: efecto de la composición química

Estudios Geologicos, 1989
El fraccionamiento isotópico de los elementos puede estar afectado por distintos factores, tales como: Presión, Estructura Cristalina, Temperatura y Composición química. Este trabajo de revisión pretende estudiar la influencia en la composición isotópica
E. Caballero
doaj   +1 more source

Isótopos Estables de Carbono y Nitrógeno y Cromatografía gaseosa en cerámica arqueológica del Nordeste de la Provincia de Chubut (Patagonia Argentina) [PDF]

, 2014
El registro arqueológico del nordeste de la provincia del Chubut (costa marina y valle inferior del río Chubut) señala que el área estuvo ocupada desde por lo menos siete mil años atrás por cazadores recolectores que explotaron la costa, el río y las ...
Constenla, Diana Teresita, Gomez Otero, Julieta, Schuster, Veronica   +2 more
core   +2 more sources

Contribución de los isótopos estables a la gestión de residuos radiactivos de alta actividad

Estudios Geologicos, 1993
La Geoquímica de isótopos estables, mediante el estudio de las variaciones de los valores δ18O, δ13c, δ2H y δ34S de las distintas fases que se encuentran en la formación geológica seleccionada como huésped de un almacenamiento definitivo de residuos ...
E. Reyes
doaj   +1 more source