scholarly journals Survival of natural populations of Austropotamobius pallipes in rivers in Bizkaia, Basque Country (North of Iberian Peninsula)

Author(s):  
L. GARCÍA-ARBERAS ◽  
A. RALLO
2019 ◽  
Vol 39 (4) ◽  
pp. 342-348
Author(s):  
Nuria Olarte ◽  
Loreto García-Arberas ◽  
Alvaro Antón

Abstract We discuss the suitability of several sampling methods in terms of effort, efficiency, accuracy, obtained data, and the degree of disturbance in the endangered crayfish Austropotamobius pallipes (Lereboullet, 1858) and its habitat. Not all sampling strategies can be undertaken in headwater streams, and it is difficult to reach and work in remote areas. We compared three different sampling methods for five years at five sites in two small headwater streams in the Basque Country (Euskadi), northern Iberian Peninsula. We used night viewing from the river bank, hand searching during one removal pass, and the removal method by hand searching (abundance estimates) to determine their accuracy, efficiency, effort, and the disruption of crayfish and their habitat. Comparison of data between both relative abundance estimates, evaluated as captures per unit effort, were not significantly different between the estimates but they both differed significantly from the abundance estimates. Night hand searching or night viewing from the river bank required a longer surveying time and even some risk due to night work. Daylight manual searching could be consequently suitable if management of the species is supported by presence/absence data. The removal method is otherwise recommended when population estimates are required, even if it implies greater disturbance and effort from surveyors.


Author(s):  
Yannick Cormier

In many parts of Europe and especially in the Iberian Peninsula (Spain, Portugal, and the Basque Country), archaic and mysterious figures regularly haunt carnival rites since the Middle Ages (but referring, according to some specialists like A. Darpeix, member of the historical and archaeological society of Perigord, to a distant shamanic and Neolithic antiquity). They are masks adorned with skins of animals, vegetables, and straw, surrounded by bells and bones, often crowned with horns and pieces of wood. Thus arises the wild man within modern paganism to symbolize the rebirth of nature emerging from winter. The figures are essentially ambiguous, at the crossroads of nature and culture. The masks always speak of the mysteries of existence: in traditional societies, they were or still are the figures of ancestors and spirits of the dead, that of protective or evil spirits.


2018 ◽  
Vol 372 ◽  
pp. 96-111 ◽  
Author(s):  
Martin Arriolabengoa ◽  
Eneko Iriarte ◽  
Arantza Aranburu ◽  
Iñaki Yusta ◽  
Lee J. Arnold ◽  
...  

2019 ◽  
Vol 52 (1/2) ◽  
pp. 553
Author(s):  
Matías Múgica

The author argues, developing an idea proposed by French phoneticist Henri Gavel in the fifties, that the examination of the clearly Latin ancient toponymy of Upper Navarre suggests that the linguistic stratification usually proposed for the Middle Navarre (Navarra Media), an area where Basque was intensely spoken throughout the Middle Ages, should be reviewed and that in that area the Latin can be chronologically prior to the Basque, which would satisfactorily explain some unresolved knots of the linguistic history of the Basque Country and its surroundings.


2015 ◽  
Vol 24 (6) ◽  
pp. 683-697 ◽  
Author(s):  
Sebatián Pérez-Díaz ◽  
Mónica Ruiz-Alonso ◽  
José Antonio López-Sáez ◽  
José Luis Solaun-Bustinza ◽  
Agustín Azkarate ◽  
...  

2018 ◽  
Vol 32 (3) ◽  
pp. 307-320 ◽  
Author(s):  
Aitziber Suárez-Bilbao ◽  
Mikelo Elorza ◽  
Jone Castaños ◽  
Alvaro Arrizabalaga ◽  
Maria Jose Iriarte-Chiapusso ◽  
...  

2015 ◽  
Vol 47 (3) ◽  
pp. 183-186 ◽  
Author(s):  
Maria Prieto ◽  
Lidia Romera ◽  
Sonia Merinero ◽  
Gregorio Aragón ◽  
Isabel Martínez

AbstractLobarina scrobiculata(better known asLobaria scrobiculata) is a widespread lichen, threatened and Red-Listed in various European countries. Microsatellite markers for the mycobiont ofL. scrobiculatawere developed in order to investigate its genetic diversity in the Iberian Peninsula and Europe and to design effective conservation strategies. A total of 7 polymorphic markers were isolated and characterized. These microsatellites were tested in natural populations found in the Iberian Peninsula. The number of observed alleles ranged from 3 to 8, and the Nei's unbiased gene diversity from 0·26 to 0·59. These microsatellite markers are the first to be developed forL. scrobiculataand they will be useful for population studies and for the assessment of the conservation status of this species.


2018 ◽  
Vol 90 (1) ◽  
pp. 164-179 ◽  
Author(s):  
Naroa Garcia-Ibaibarriaga ◽  
Aitziber Suárez-Bilbao ◽  
Salvador Bailon ◽  
Alvaro Arrizabalaga ◽  
María-José Iriarte-Chiapusso ◽  
...  

AbstractWe present a paleoenvironmental and paleoclimatic reconstruction based on microfaunal assemblages preserved at Lezetxiki II Cave (Arrasate, Basque Country, Iberian Peninsula) and synthesize previously published and new chronological work from the cave to better understand the environmental history of the region. The stratigraphic sequence of this short gallery ranges from the end of the middle Pleistocene to the middle Holocene and has great micropaleontological relevance for the Iberian Peninsula, especially because it contains the most ancient small vertebrate remains found in the Cantabrian region, likely deposited during Marine Oxygen Isotope Stage 7–6. Thirty-two small vertebrate taxa, including two extinct species, were identified. Environmental reconstruction based on small vertebrates suggests an open landscape at the base of the sequence (three lower levels) that progressively changed to woodland in the upper levels. Other paleoenvironmental data suggest a similar interpretation of the environmental history of the region, and although some uncertainty in the environmental reconstruction and chronology still exists, our data provide a richly detailed record of small vertebrates from an area that likely represented an important late Quaternary migration corridor for species traveling between the Iberian Peninsula and European continent.


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