Abstract The seasonal variations and the interactions of water masses in tropical Pacific off central Mexico (TPCM) four surrounding areas were examined based on an extensive new hydrographic database. regional redefined terms absolute salinity ( S A ) conservative temperature (Θ) according to Thermodynamic Equation Seawater 2010 (TEOS-10). Hydrographic data evaporation minus (precipitation + runoff) balance used investigate origin seasonality two minima area. shallow (50–100 m) minimum...

The state of scientific knowledge about the vaquita, Phocoena sinus , is presented, a critically endangered endemic species Upper Gulf California, Mexico. Several bibliographic repositories were explored, selecting Web Science because it considers Citation Index as selection criterion. A bibliometric and analysis literature was carried out. network associations built based on co-occurrence sets keywords, which reflect relevance research topics discussed. Two stand out: population...

Abstract Based on hydrographic data and vertical distributions of tropical species fish larvae ( Diogenichthys laternatus , Vinciguerria lucetia Bregmaceros bathymaster Auxis spp.), effects “Godzilla El Niño 2015–2016” in the shallow oxygen minimum zone off Mexico were analyzed. Zooplankton samples collected during four cruises, before (February 2010 April 2012) (June 2015 March 2016) warm event. Temporal series sea surface temperature revealed that June was warmest last years. Conservative...

Abstract Anoxic waters in the ocean's oxygen deficient zones (ODZs) limit vertical migrations of zooplankton and mesopelagic fish impacting their ecology influence on biogeochemical processes. Using an oxypleth‐tracking, nighttime‐only sampling protocol, this research reconstructed trophic interactions larvae adults, zooplankton, across Eastern Tropical North Pacific ODZ. Bulk δ 15 N increased latitudinally by ~ 3.3‰ from Costa Rica to Baja California due anoxia‐derived denitrification...

Vertical distribution and abundance of three numerically dominant krill species ( Nyctiphanes simplex , Nematoscelis difficilis Euphausia eximia ) were surveyed in the Gulf California to understand role oxidative stress their daily vertical migration (DVM) zoogeographic patterns. Superoxide radical production, lipid peroxidation, antioxidant enzyme activities analyzed from collected with stratified nets surface down 200 m during January, July, October 2007. The upper boundary oxygen minimum...

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 488:275-290 (2013) - DOI: https://doi.org/10.3354/meps10369 Habitat, trophic level, and residence of marine mammals in Gulf California assessed by stable isotope analysis David Aurioles-Gamboa1,*, Mónica Y. Rodríguez-Pérez1, Laura Sánchez-Velasco2, Miguel F. Lavín3 1Laboratorio de Ecología Pinnípedos 'Burney...

Transects of CTD (to 1000 m) and zooplankton stations 200 m in 50 strata) were made across an anticyclonic eddy the southern Gulf California during October 2007 to determine its influence upon three-dimensional distribution larval fish assemblages. The was ∼90 km diameter ∼70 deep. A assemblage, representing a mix oceanic coastal species, defined mainly from depth surface. Mesopelagic such as Vinciguerria lucetia, dominant. Coastal reef (Diplectrum sp.) pelagic (Auxis spp.) species found...

Determining the relative influence of biotic and abiotic factors on genetic connectivity among populations remains a major challenge in evolutionary biology management conservation species. North Pacific hake (Merluccius productus) inhabits upwelling regions California Current ecosystem from Gulf to Alaska. In this study, we examined mitochondrial DNA (mtDNA) microsatellite variation estimate levels differentiation M. productus relation role oceanographic features as potential barriers gene...

We analyze spatial–temporal relationship between larval fish assemblages and geostrophic surface flow in Bahía de La Paz the neighboring Gulf of California (May, July October 2001 February 2002). The analysis larvae distribution relation to circulation hydrography is an innovative interdisciplinary approach for understanding ecology. Bray–Curtis Index defined two with variations: coastal assemblage dominated by epipelagic species (e.g. Sardinops caeruleus) oceanic assemblages—oceanic...

In this work, we linked larval fish assemblages with water masses and circulation in the Eastern Tropical Pacific off Mexico, during autumn 2005 winter 2007. Four were defined. (i) The "Transitional" assemblage, lowest mean abundance dominated by tropical mesopelagic Vinciguerria lucetia Diogenicthys laternatus. It was associated modified California Current Water Surface autumn. (ii) "Coastal-oceanic" assemblage found Cabo Corrientes, high abundance, Bregmaceros bathymaster; part of trapped...

Abstract The three‐dimensional distribution of the paralarvae complex Sthenoteuthis oualaniensis‐Dosidicus gigas (Cephalopoda: Ommastrephidae) was analyzed at northern limit shallow oxygen minimum zone in Eastern Tropical Pacific April 2012. upper water (∼44 µmol/kg or 1 mL/L) rises from ∼100 m depth entrance Gulf California to ∼20 off Cabo Corrientes. Most this complex, dominated by D . , were concentrated entrance, between thermocline (∼20 ∼50 depth) and sea surface, warmest (>19°C)...

Abstract In the Eastern Tropical North Pacific Oxygen Minimum Zone (ETNP‐OMZ), fish larvae undergo development amidst highly variable dissolved oxygen environments. As OMZs expand, understanding implications of low‐oxygen environments on becomes increasingly relevant for fisheries management and ecosystem modeling. Using horizontal zooplankton tows to track five levels (oxic [200 μ mol/kg], hypoxic [100 mol/kg] suboxic [10 anoxic [<1 deep mol/kg at ~ 1000 m depth]), this study analyzed...

Larval diet and feeding habits of the marine fish Callionymus sp. Arnoglossus laterna larvae, two species co-occurring in Catalan Sea (May, 1992), were compared. For dominant prey Oithona spp. Oncaea copepodites, with less frequency Paracalanus copepodites. A. was composed only Copepod nauplii not important these species, although they most abundant zooplankter area. As larvae both grew, size number increased. This tendency more obvious which reflected a greater diversity during all their...

Seasonal changes in connectivity routes among larval fish assemblages the northern Gulf of California were studied with matrices from particle-tracking a 3D baroclinic numerical model. Results show strong seasonality according to seasonal circulation phases. In summer (cyclonic phase), when is dominated by central cyclonic eddy and northwestward coastal current on mainland shelf, particle retention after 30 days high (>55%), dispersion toward Southern low (<17%). Thus recruitment most...