Results 11 to 20 of about 5,687 (205)

Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: ecological and historical factors with implications for conservation [PDF]

American Journal of Botany, 2001
The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan Fernández Islands, Chile. Mean diversities at the species level (Hes = 0.065) are low but comparable to those measured for other insular endemics in the Pacific.
Crawford, Daniel J., Ruiz, Eduardo, Stuessy, Tod F., Tepe, Eric, Aqeveque, Pedro, Gonzalez, Fedelina, Jensen, Richard J., Anderson, Gregory J., Bernardello, Gabriel Luis Mario, Baeza, Carlos M., Swenson, Ulf, Silva, Mario O.   +11 more
openaire   +5 more sources

Seasonal acoustic presence of sei whales off the Juan Fernandez Archipelago, Chile

Endangered Species Research
This study examined the occurrence of sei whale upsweep and downsweep vocalisations in 3 yrs of acoustic data (2015-2017) from the Juan Fernandez Archipelago, Chile, to determine the seasonal presence of this species in this area. Acoustic data were obtained from a hydroacoustic station (HA03) maintained by the Comprehensive Test-Ban-Treaty ...
Abarzua, Sofia Francisca Alvarez, Buchan, Susannah J., Stafford, Kathleen M.   +2 more
openaire   +4 more sources

Subtidal reef fish and macrobenthic community structure at the temperate Juan Fernandez Archipelago, Chile

Latin American Journal of Aquatic Research, 2014
The Juan Fernández Archipelago (33°37'S, 78°51'W), an isolated group of islands 650 km west of continental Chile, has a high degree of endemism in its marine biota. Despite numerous scientific expeditions to these islands that have identified this high endemism, few studies have attempted to identify patterns of community structure in subtidal habitats.
Perez-Matus, Alejandro, Ramirez, Fabian, Eddy, Tyler D., Cole, Russell   +3 more
openaire   +5 more sources

A new species of polychaete worm from Juan Fernandez Archipelago, Chile, Scoloplos juanfernandezensis n. sp. (Polychaeta: Orbiniidae)

Latin American Journal of Aquatic Research, 2017
Abstract. A new species of Orbiniidae, Scoloplos juanfernandezensis n. sp. from the Robinson Crusoe Island (33°37’S, 78°51’W), Juan Fernandez Archipelago, insular Chile, is described. The samples were collected by means of SCUBA from depths between 4 and 10 meters, between the years 2008 and 2012.
Rozbaczylo, Nicolás, Díaz-Díaz, Oscar, Cataldo, Nicolás   +2 more
openaire   +3 more sources

Lumbrineris lanai n. sp., a new species of polychaete (Annelida: Eunicida: Lumbrineridae) from the Robinson Crusoe Island, Juan Fernandez Archipelago, off the coast of Chile

Ocean and Coastal Research
Abstract We describe a new species of the genus Lumbrineris de Blainville, 1828 with material collected in nine diferente locations around the Robinson Crusoe Island, Juan Fernández Archipelago (Lat. 33º 36’ and 33º 46’ S and Long. 80º 47’ and 78º 47’ W) from sandy bottoms, between 4–10 m depth. One hundred seventy-nine specimens were examined.
Oscar Díaz-Díaz, Nicolás Rozbaczylo, Paulina Gárate   +2 more
openaire   +3 more sources

Factors driving adaptive radiation in plants of oceanic islands: a case study from the Juan Fernández Archipelago. [PDF]

J Plant Res, 2018
Adaptive radiation is a common evolutionary phenomenon in oceanic islands. From one successful immigrant population, dispersal into different island environments and directional selection can rapidly yield a series of morphologically distinct species ...
Takayama K, Crawford DJ, López-Sepúlveda P, Greimler J, Stuessy TF.   +4 more
europepmc   +2 more sources

Plant Conservation in the Juan Fernandez Archipelago, Chile [PDF]

Aliso, 1997
Oceanic archipelagos often hold very specialized floras with high degrees of endemism. These floras are frequently highly vulnerable to disturbance by natural causes and human intervention.
Tod Stuessy, Ulf Swenson, Daniel Crawford, Gregory Anderson, Mario Silva O   +4 more
openaire   +4 more sources

Spatio-temporal migratory dynamics of Jasus frontalis (Milne Edwards, 1837) in Alexander Selkirk Island, Juan Fernández archipelago, Chile. [PDF]

PLoS One, 2018
Knowledge about the spatial patterns and movements of crustaceans has gained importance since the creation of marine protected areas and the development of spatial management for benthic ecosystems.
Román C, Ernst B, Thiel M, Manríquez P, Chamorro J.   +4 more
europepmc   +2 more sources

Correction to: Factors driving adaptive radiation in plants of oceanic islands: a case study from the Juan Fernández Archipelago. [PDF]

J Plant Res, 2019
The article Factors driving adaptive radiation in plants of oceanic islands: a case study from the Juan Fernández Archipelago, written by Koji Takayama, Daniel J. Crawford, Patricio López‑Sepúlveda, Josef Greimler, Tod F. Stuessy was originally published
Takayama K, Crawford DJ, López-Sepúlveda P, Greimler J, Stuessy TF.   +4 more
europepmc   +2 more sources

Progressive migration and anagenesis in Drimys confertifolia of the Juan Fernández Archipelago, Chile. [PDF]

J Plant Res, 2015
A common mode of speciation in oceanic islands is by anagenesis, wherein an immigrant arrives and through time transforms by mutation, recombination, and drift into a morphologically and genetically distinct species, with the new species accumulating a ...
López-Sepúlveda P, Takayama K, Greimler J, Crawford DJ, Peñailillo P, Baeza M, Ruiz E, Kohl G, Tremetsberger K, Gatica A, Letelier L, Novoa P, Novak J, Stuessy TF.   +13 more
europepmc   +2 more sources