Results 31 to 40 of about 13,008 (304)

Loancorhynchus catrillancai gen. et sp. nov., a new swordfish (Xiphioidei, Blochiidae) from the Middle Eocene of central Chile [PDF]

PeerJ, 2019
This contribution describes the skull remains of a swordfish (Perciformes, Xiphioidei), recovered from Middle Eocene beds of central Chile. Comparison with known fossil and extant xiphioids reveals derived traits only present in the Neogene swordfish ...
Rodrigo A. Otero
doaj   +2 more sources

Seasonality of larvae of Brachyura and Anomura (Crustacea Decapoda) in the Beagle Channel, Argentina

Scientia Marina, 1999
This is the first study in the Beagle Channel that reports the larval seasonal distribution, abundance and duration of the larval stages of Anomura and Brachyura, on the basis of a fortnightly sampling programme.
Gustavo A. Lovrich
doaj   +1 more source

New localities for Crustacea Decapoda in the Magellan region, southern South America

Scientia Marina, 1999
We report the occurrence of Lithodes turkayi (Anomura), Libidoclaea granaria, and C. edwardsii (Brachyura), in the Beagle Channel. This observation extends their range of distribution south of the previously reported limit of the Straits of Magellan ...
Julio H. Vinuesa, Gustavo A. Lovrich, Federico Tapella   +2 more
doaj   +1 more source

Metallogenic Provinces in Southeastern Pacific Region: ABSTRACT [PDF]

AAPG Bulletin, 1974
Abstract Mineral deposits of the southeastern Pacific region include: (1) hypogene, volcanogenic, and sedimentary deposits of the Andean region, (2) scattered copper deposits in the Antarctic Peninsula; and (3) metal-enriched sea-floor sediments and volcanic rocks. Andean metalliferous deposits are related spatially and genetically to
openaire   +1 more source

Energetics of a Southeastern Pacific cut‐off low

Atmospheric Science Letters, 2013
AbstractThe occurrence of cut‐off lows (COLs) over South Pacific can be seen on different synoptic maps and on satellite imageries. However, the formation and maintenance mechanisms of the COLs are not well understood. An energetics analysis of a COL case through the eddy kinetic energy (EKE) equation is the aim of this study.
Manoel Alonso Gan, Everson Dal Piva
openaire   +1 more source

Impact of Tropical SSTs in the North Atlantic and Southeastern Pacific on the Eastern Pacific ITCZ

Journal of Climate, 2017
Abstract During boreal spring, observations show a double ITCZ over the eastern Pacific, with the northern ITCZ stronger than the southern ITCZ. However, it is opposite in most climate models. It is also evident that there exists a cold bias in tropical North Atlantic (TNA) sea surface temperature (SST) and a warm bias in southeastern ...
Guang J. Zhang, Fengfei Song
openaire   +1 more source

Rapid high-latitude cooling in the southeastern Pacific sector driven by North Atlantic warming during 1979–2013 in CESM1

Environmental Research Letters
During the 1979–2013 satellite observation period, the sea surface temperature (SST) has cooled substantially in the high-latitude Southern Ocean, with the most pronounced cooling tendency centered in the southeastern Pacific domain.
Shuai-Lei Yao, Renguang Wu, Pengfei Wang, Shangfeng Chen   +3 more
doaj   +1 more source

Unrolling the Systematics of a Southeastern Pacific Chiton

Taxonomy
The species Chiton echinatus was first described by Barmes in 1824. Subsequently, it has been allocated to several widely distributed genera (e.g., Acanthopleura, Enoplochiton, Mesotomura) within the subfamily Acanthopleurinae. In order to resolve this species’ taxonomic uncertainty, specimens were collected throughout its entire distribution (i.e ...
Christian M. Ibáñez, Boris Sirenko
openaire   +2 more sources

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková, Michiel van Dijk, Robert M'Barek, Hans van Meijl, Tomas Ratinger   +4 more
wiley   +1 more source

Polysaccharides, Proteins, and Phytoplankton Fragments: Four Chemically Distinct Types of Marine Primary Organic Aerosol Classified by Single Particle Spectromicroscopy

Advances in Meteorology, 2010
Carbon-containing aerosol particles collected in the Arctic and southeastern Pacific marine boundary layers show distinct chemical signatures of proteins, calcareous phytoplankton, and two types of polysaccharides in Near-Edge Absorption X-ray Fine ...
Lelia N. Hawkins, Lynn M. Russell
doaj   +1 more source