Petrel Research Articles

Albatrosses, Petrels and Shearwaters of the World.

Albatrosses, Petrels and Shearwaters of the World.

Spatio-temporal variation in mortality rates of White-chinned Petrels Procellaria aequinoctialis interacting with longliners in the south-west Atlantic

AbstractThe White-chinned Petrel Procellaria aequinoctialis is the second most commonly captured species by Argentinean longliners. The severe declines that this species has experienced in some of its populations (e.g. South Georgia Islands) have been principally attributed to incidental mortality associated with longliners. In this study we analyse the spatio-temporal variability in the mortality rates of White-chinned Petrels on the Patagonian Shelf and the effects that environmental and operational variability have on such mortality. The average capture rate (± 1 SD) for the period 1999–2003 was 0.014 ± 0.090 White-chinned Petrels for every 1,000 hooks deployed. Higher capture rates were observed when short longlines were deployed. Capture rates were not affected by the wind speed or by the time to the full moon. The distribution of the captures differed throughout the year. During autumn–winter most captures took place in the north of the Patagonian Shelf, whereas during spring–summer incidental captures occurred principally to the south between 45°S and 50°S.ResumoEl Petrel Barba Blanca Procellaria aequinoctialis constituye la segunda especie más frecuentemente capturada por la flota palangrera Argentina. Los importantes decrecimientos poblacionales observados en algunas poblaciones de esta especie (e.g. Islas Georgias del Sur) han sido principalmente atribuidos a la mortalidad incidental asociada a embarcaciones palangreras. En este trabajo se analizó la variación espacio- temporal en las tasas de captura incidental del Petrel Barba Blanca a lo largo de la Plataforma Continental Argentina y se estudió el efecto que diferentes variables ambientales y operacionales tienen sobre la mortalidad incidental de esta especie. La tasa de captura promedio (± d.s) durante el periodo 1999–2003 fue de 0.014 ± 0.090 Petreles Barba Blanca cada 1.000 anzuelos. Mayores tasas de captura fueron registradas al utilizar palangres cortos. No se observó un efecto de la intensidad del viento ni de la distancia a la luna llena sobre las tasas de captura. La distribución de las capturas difirió a lo largo del aão. Durante el otoão-invierno la mayoría de las capturas estuvieron localizadas al norte de la Plataforma Continental Argentina, mientras que durante los meses de primavera-verano las capturas estuvieron localizadas principalmente entre los 45°S y 50°S.

Albatrosses and petrels across the world

Albatrosses and petrels across the world

Two stormy petrels: Edward J. O'Brien and Norman Bethune.

Two stormy petrels: Edward J. O'Brien and Norman Bethune.

Influence of Artificial Burrows and Microhabitat on Burrow Competition between Chatham Petrels Pterodroma axillaris and Broad-billed Prions Pachyptila vittata

(2000). Influence of Artificial Burrows and Microhabitat on Burrow Competition between Chatham Petrels Pterodroma axillaris and Broad-billed Prions Pachyptila vittata. Emu - Austral Ornithology: Vol. 100, No. 4, pp. 329-333.

Foraging Behaviour of Diving Petrels Pelecanoides

(1999). Foraging Behaviour of Diving Petrels Pelecanoides. Emu - Austral Ornithology: Vol. 99, No. 1, pp. 72-74.

First Atlantic Murphy's Petrel, Pterodoma ultima, at St Helena

First Atlantic Murphy's Petrel, Pterodoma ultima, at St Helena

The First Record of the Mottled Petrel for Japan

The First Record of the Mottled Petrel for Japan

The classification and nomenclature of the petrels

The classification and nomenclature of the petrels

How Useful Are Vocalizations in Petrel Systematics?

How Useful Are Vocalizations in Petrel Systematics?

Regulation of Water Loss from Bonin Petrel (Pterodroma hypoleuca) Eggs

Regulation of Water Loss from Bonin Petrel (Pterodroma hypoleuca) Eggs

Hall, Jr., Robert A. Stormy Petrel in Linguistics

La aütobiografio de Hall rakontas el persona vidpunkto la historion de la lingvistiko en Usono inter la tridekaj kaj sesdekaj jaroj de nia jarcento. Gi atestas la atakemon, batalemon de la universitata vivo, kiu neniel estas tiel ideala, kiel studento revas. Temas pri vivhistorio de interesa, sprita, humura lingvisto, kun carmaj, amuzaj, ofte tiklaj rakontoj kaj anekdotoj. Kontraüe al sia propra aserto, per sia libro Hall ofte respondas al atakoj de profesiaj kontraüuloj, tiel ricevante la lastan vorton. Li montras la kve-relojn inter si kaj, ekzemple, Leo Spitzer; la sintenon de diversaj profesoroj, ankaü liaj propraj, al siaj studentoj - do ankaü al li, kiel studento. Oni ekkomprenas la reputacion de la lingvistoj kaj filologoj kiel ec plikverelemaj, ol la alifakaj kolegoj. Leginda, ofte humura libro.

A specimen of the Herald Petrel from Queensland

A specimen of the Herald Petrel from Queensland

A Technique for Capturing Petrels and Shearwaters at Sea

A Technique for Capturing Petrels and Shearwaters at Sea

Ionosphere: Petrel on Target

Ionosphere: Petrel on Target

First Flights by Petrel

First Flights by Petrel

Another New Petrel for Victoria

Another New Petrel for Victoria

White-headed Petrel in Tasmania

White-headed Petrel in Tasmania

A Petrel New for Australia

A Petrel New for Australia

The White-headed Petrel: New South Wales Records

The White-headed Petrel: New South Wales Records