Search Results - "Herguera, Juan Carlos"

Anomalous > 2000‐Year‐Old Surface Ocean Radiocarbon Age as Evidence for Deglacial Geologic Carbon Release by Rafter, Patrick A., Carriquiry, José D., Herguera, Juan‐Carlos, Hain, Mathis P., Solomon, Evan A., Southon, John R.

“…Geologic carbon from seafloor volcanism may influence late Pleistocene glacial terminations by increasing the global inventory of the greenhouse gas CO2…”
Get full text

Understanding the Effects of Dissolution on the Mg/Ca Paleothermometer in Planktic Foraminifera: Evidence From a Novel Individual Foraminifera Method by Rongstad, Brigitta L., Marchitto, Thomas M., Herguera, Juan Carlos

“…It is well documented that partial dissolution of planktic foraminiferal tests results in a reduction of Mg/Ca ratios, and hence of inferred calcification…”
Get full text

Calibration of the carbon isotope composition (δ13C) of benthic foraminifera by Schmittner, Andreas, Bostock, Helen C., Cartapanis, Olivier, Curry, William B., Filipsson, Helena L., Galbraith, Eric D., Gottschalk, Julia, Herguera, Juan Carlos, Hoogakker, Babette, Jaccard, Samuel L., Lisiecki, Lorraine E., Lund, David C., Martínez‐Méndez, Gema, Lynch‐Stieglitz, Jean, Mackensen, Andreas, Michel, Elisabeth, Mix, Alan C., Oppo, Delia W., Peterson, Carlye D., Repschläger, Janne, Sikes, Elisabeth L., Spero, Howard J., Waelbroeck, Claire

“…The carbon isotope composition (δ13C) of seawater provides valuable insight on ocean circulation, air‐sea exchange, the biological pump, and the global carbon…”
Get full text

Foraging segregation by sex and age class in the Guadalupe fur seal from Guadalupe Island, Mexico by Cruz‐Vallejo, Romyna A., Amador‐Capitanachi, María José, Norris, Tenaya, Hernández‐Camacho, Claudia J., Tripp‐Valdez, Arturo, Moncayo‐Estrada, Rodrigo, Herguera‐García, Juan Carlos, Godard‐Codding, Céline, Elorriaga‐Verplancken, Fernando R.

“…A proper assessment of the foraging habits of the Guadalupe fur seal (GFS; Arctocephalus townsendi) is a priority to better understand its recovery, in which…”
Get full text

Trophic ecology of Mexican Pacific harbor seal colonies using carbon and nitrogen stable isotopes by Juárez-Rodríguez, Maricela, Heckel, Gisela, Herguera-García, Juan Carlos, Elorriaga-Verplancken, Fernando R, Herzka, Sharon Z, Schramm, Yolanda

“…There is limited information that provides a comprehensive understanding of the trophic ecology of Mexican Pacific harbor seal (Phoca vitulina richardii)…”
Get full text

Extreme lowering of deglacial seawater radiocarbon recorded by both epifaunal and infaunal benthic foraminifera in a wood-dated sediment core by Rafter, Patrick A, Herguera, Juan-Carlos, Southon, John R

“…For over a decade, oceanographers have debated the interpretation and reliability of sediment microfossil records indicating extremely low seawater radiocarbon…”
Get full text

The metabolic core of the prokaryotic community from deep-sea sediments of the southern Gulf of Mexico shows different functional signatures between the continental slope and abyssal plain by Torres-Beltrán, Mónica, Vargas-Gastélum, Lluvia, Magdaleno-Moncayo, Dante, Riquelme, Meritxell, Herguera-García, Juan Carlos, Prieto-Davó, Alejandra, Lago-Lestón, Asunción

“…Marine sediments harbor an outstanding level of microbial diversity supporting diverse metabolic activities. Sediments in the Gulf of Mexico (GoM) are…”
Get full text

Sediment accumulation patterns on the slopes and abyssal plain of the southern Gulf of Mexico by Díaz-Asencio, Misael, Bartrina, Vicente Ferreira, Herguera, Juan Carlos

“…Here we present new results on the spatial distribution patterns of lithogenic and biogenic components and sedimentation processes in the deep-water region…”
Get full text

Beyond habitat boundaries: Organic matter cycling requires a system‐wide approach for accurate blue carbon accounting by Krause, Johannes Renke, Hinojosa‐Corona, Alejandro, Gray, Andrew B., Herguera, Juan Carlos, McDonnell, Julianna, Schaefer, Michael V., Ying, Samantha C., Watson, Elizabeth Burke

“…As coastal ecosystems become widely recognized for their capacity to sequester carbon (blue carbon), standard accounting methodologies for the generation of…”
Get full text

Sensitivity of carbon paleoproductivity in the Southern California Current System on different time scales for the last 2ka by Abella-Gutierrez, Jose, Herguera, Juan Carlos

“…The San Lázaro Basin (SLB) sediment record is highly sensitive to the El Niño-Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO) due to its…”
Get full text

Distribution and source of plutonium in sediments from the southern Gulf of Mexico by Corcho-Alvarado, José A., Díaz-Asencio, Misael, Röllin, Stefan, Herguera, Juan Carlos

“…Here, we report on new data (75 analyses) of plutonium (Pu) isotopes to elucidate activity concentrations, inventories, sources, and their transport from the…”
Get full text

Unraveling the channel-lobe transition zone with high-resolution AUV bathymetry; Navy Fan, offshore Baja California, Mexico by Carvajal, Cristian, Paull, Charles K, Caress, David W, Fildani, Andrea, Lundsten, Eve, Anderson, Krystle, Maier, Katherine L, McGann, Mary, Gwiazda, Roberto, Herguera, Juan Carlos

“…Ultra-high-resolution (1 m * 1 m * 0.25 m) bathymetry was acquired with an autonomous underwater vehicle (AUV) over a sector of the Navy Fan offshore Baja…”
Get full text

Physical and biogeochemical controls of the carbonate system of the Yucatan Shelf by Barranco, Linda M., Martín Hernández Ayón, J., Pech, Daniel, Enriquez, Cecilia, Herrera, Jorge, Mariño, Ismael, Carlos Herguera, Juan

Get full text

Distribution pattern of picoplankton carbon biomass linked to mesoscale dynamics in the southern gulf of Mexico during winter conditions by Linacre, Lorena, Lara-Lara, Rubén, Camacho-Ibar, Víctor, Herguera, Juan Carlos, Bazán-Guzmán, Carmen, Ferreira-Bartrina, Vicente

“…In order to characterize the carbon biomass spatial distribution of autotrophic and heterotrophic picoplankton populations linked to mesoscale dynamics, an…”
Get full text

Mid-to-Late Holocene organic carbon export variability at the southern boundary of the California Current: An approach based on diffuse spectral reflectance of marine sediment cores by Cortina, Aleix, Herguera, Juan Carlos

“…Here we present the results obtained from diffuse spectral reflectance (DSR) on the visible wave spectra on a 4.5m-long Calypso Kasten core (MD02-2506-C2),…”
Get full text

Sediment accumulation rates and vertical mixing of deep-sea sediments derived from14C and 210Pb in the southern Gulf of Mexico by Díaz-Asencio, Misael, Herguera, Juan Carlos, Schwing, Patrick T., Larson, Rebekka A., Brooks, Gregg R., Southon, John, Rafter, Patrick

“…Here we present new results on the sedimentation rates and vertical mixing in the deep-water region (966–3741 m) of the southern Gulf of Mexico, from a…”
Get full text

Atlantic Meridional Overturning Circulation During the Last Glacial Maximum by Lynch-Stieglitz, Jean, Adkins, Jess F, Curry, William B, Dokken, Trond, Hall, Ian R, Herguera, Juan Carlos, Hirschi, Joël J.-M, Ivanova, Elena V, Kissel, Catherine, Marchal, Olivier, Marchitto, Thomas M, McCave, I. Nicholas, McManus, Jerry F, Mulitza, Stefan, Ninnemann, Ulysses, Peeters, Frank, Yu, Ein-Fen, Zahn, Rainer

“…The circulation of the deep Atlantic Ocean during the height of the last ice age appears to have been quite different from today. We review observations…”
Get full text

Metacommunity analysis of meiobenthos of deep-sea sediments from the Gulf of Mexico by Cisterna-Céliz, José Alejandro, Marcelino-Barros, Mirayana, Herguera, Juan Carlos, Rocha-Olivares, Axayácatl

“…Metacommunity theory is a conceptual framework addressing the interdependence of local interactions and regional processes, especially when it is difficult to…”
Get full text

A gulf-wide synoptic isoscape of zooplankton isotope ratios reveals the importance of nitrogen fixation in supporting secondary production in the central Gulf of Mexico by Hernández-Sánchez, Oscar Gabriel, Camacho-Ibar, Víctor F., Barbero, Leticia, Herguera, Juan Carlos, Herzka, Sharon Z.

“…A synoptic gulf-wide isoscape of carbon (δ 13 C) and nitrogen (δ 15 N) in the Gulf of Mexico based on mesozooplankton (335-1000 um) was used as a proxy for the…”
Get full text

Geochemical characteristics of pore waters from sediment cores of the Wagner Basin, Gulf of California by Batista Cruz, Ramón Yosvanis, Peiffer, Loïc, Weber, Bodo, Herguera, Juan Carlos, Liotta, Marcello, Fernández, Antonio González, Barragán Reyes, Rosa María, Kretzschmar, Thomas Gunter

“…The Wagner Basin (WB) is a shallow basin (depth < 225 m) belonging to the northernmost section of the Gulf of California rift system. Hydrothermal activity and…”
Get full text