Results 61 to 70 of about 2,322 (211)

Humpback whales off Peru: new records and a rationale for renewed research. Scientific Committee document SC/48/SH1, International Whaling Commission, June 1986, Aberdeen [PDF]

open access: yes, 1996
New records indicate that some Area I humpback whales are present in coastal upwelling waters off Peru and Chile during the austral summer, and thus apparently fail to migrate to the Antarctic.
Alfaro-Shigueto, J.   +2 more
core  

Mantle-derived magmas and magmatic Ni-Cu-(PGE) deposits [PDF]

open access: yes, 2005
Magmatic Fe-Ni-Cu ± platinum-group element (PGE) sulfide deposits form when mantle-derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid, commonly following interaction with crustal rocks.
Arndt, Nicholas   +2 more
core   +2 more sources

Plant species richness hotspots and related drivers across spatial scales in small Mediterranean islands

open access: yesJournal of Systematics and Evolution, Volume 62, Issue 2, Page 242-256, March 2024.
We used the species–area relationship to identify plant richness hotspots and coldspots at the island and vegetation community scales. The 12 selected cross‐scale hotspots were mainly located in Southern Italian archipelagos. Species richness patterns were mainly related to area and the idiosyncratic effect of habitats and islands, with climate and ...
Riccardo Testolin   +12 more
wiley   +1 more source

Distribution and species diversity of freshwater crabs of the family Pseudothelphusidae in Colombia (Crustacea: Decapoda: Brachyura)

open access: yesNauplius, 2020
The study of Colombian freshwater crabs has advanced significantly, but species records are scattered across different museums and research institutions. Assuming that museum collections incorporate valuable information in estimating species diversity, a
Martha R. Campos, Diógenes Campos
doaj   +1 more source

Globally coordinated acoustic aquatic animal tracking reveals unexpected, ecologically important movements across oceans, lakes and rivers

open access: yesEcography, Volume 2024, Issue 1, January 2024.
Acoustic telemetry is a popular approach used to track many different aquatic animal taxa in marine and freshwater systems. However, information derived from focal studies is typically resource‐ and geography‐limited by the extent and placement of acoustic receivers.
Robert J. Lennox   +29 more
wiley   +1 more source

The role of high- and low-temperature ocean crust alteration for the marine calcium budget [PDF]

open access: yes, 2007
Calcium (Ca) is a key element for the understanding of the chemical evolution of the ocean and for the global climate on long geological time scales.
Amini, Marghaleray
core  

THE HYDROCLIMATOLOGY OF GORGONA ISLAND: SEASONAL AND ENSO-RELATED PATTERNSA HIDROCLIMATOLOGÍA DE LA ISLA GORGONA: PATRONES ESTACIONALES Y RELACIONADOS CON EL ENSO

open access: yesActualidades Biológicas, 2009
Most small watersheds in the Tropical Eastern Pacific remain ungauged, and discharge analyses using gauge and simulated data have been published only for a few large rivers.
Juan F. Blanco
doaj  

Siphonophores from surface waters of the Colombian Pacific Ocean [PDF]

open access: yes, 2018
Siphonophores are colonial hydrozoans that feed on zooplankton including fish larvae, and occur throughout the world’s oceans from surface waters to ocean depths.
Ahlstrom   +35 more
core   +1 more source

Chapter The building materials of “Rocca Vecchia” (Old Fortress) in the Gorgona Island [PDF]

open access: yes, 2022
The research examines the building materials of the ancient fortress known as Rocca Vecchia, in the Gorgona Island, built by the Republic of Pisa and commonly dated to the 13th century. Particular attention is paid to the composition of the artificial stone materials (bricks, bedding mortars, plasters and renders) in order to better understand and ...
De Vita, Francesca   +3 more
openaire   +1 more source

Notas sobre la ocurrencia de Pelamis platurus (Reptilia: Serpentes: Hydrophiidae) en el Pacífico Colombiano [PDF]

open access: yes, 1998
The presence of the Pelamis platurus (Linnaeus) in the Colombian Pacific coast, is confirmed based on 35 reports (18 published and 17 unpublished), and 36 individual records in national colections.
Hernández Camacho Jorge I.   +1 more
core   +1 more source

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