Effects of the First Southern Atlantic Hurricane on Atlantic Petrels (Pterodroma Incerta)

Bugoni, Leandro; Sander, Martin; Costa, Erli Schneider

doi:10.1676/06-141.1

Cited by 29 publications

(26 citation statements)

References 11 publications

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“…The White-chinned Petrel, a species frequently killed in fisheries in several areas, also seems to have skewed male-biased mortality in fisheries around breeding colonies as mentioned above (see also Delord et al 2005 around Crozet Kerguelen Islands), but not confirmed by Gandini and Frere (2006) Black-browed and Grey-headed Albatrosses , Southern Buller"s Albatross (Thalassarche bulleri) (Stahl and Sagar 2000a), and suggested in other studies (Bartle 2000;Shaffer et al 2001;Weimerskirch et al 2005). Moreover, differential at sea distribution during wintering periods has been argued as responsible for sex biases in albatrosses and petrels washed ashore (Holmes 1981) or driven inland by storm (Bugoni et al 2007), yet not demonstrated in some species or populations (e.g. Anderson et al 1998;Stahl and Sagar 2000b).…”

Section: Discussionmentioning

confidence: 80%

Sex-biased incidental mortality of albatrosses and petrels in longline fisheries: differential distributions at sea or differential access to baits mediated by sexual size dimorphism?

2010

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. Sex-biased incidental mortality of albatrosses and petrels in longline fisheries: differential distributions at sea or differential access to baits mediated by sexual size dimorphism?. Journal für Ornithologie = Journal of Ornithology, Springer Verlag, 2010, 152 (2) AbstractSkewed Adult Sex Ratio (ASR) has been proposed as a common pattern in birds, frequently biased towards males and with larger biases in globally threatened species. In albatrosses and petrels, it has been suggested that differential mortality of one gender in fisheries is caused either by sexual size dimorphism giving males a competitive advantage, which allows more access of the larger sex (i.e. males) to discards and/or baits, or to at sea segregation of sexes.Here we tested these hypotheses by determining ASRs in albatrosses and petrels trapped at sea when attending longline fishing vessels for discards in the Southwestern Atlantic Ocean, and searched in the literature for patterns in ASR in albatrosses and petrels killed by fisheries in this area and elsewhere. We show that skewed ASR is common in albatrosses and petrels in the community attending vessels for discards, confirming results found for birds in general.There was no correlation between skewed ASR and conservation status, or between ASR and sexual size dimorphism. Our review of the sex of birds incidentally killed in fisheries found skewed ASR toward males, females or parity to be equally reported. Thus, sexual dimorphism in size does not explain skewed ASR in the community we sampled or in incidental captures in fisheries in the review. Differential at sea distribution of sexes appears to be a better explanation of the patterns found in the community sampled at sea as well as skewed ASR in seabird fatalities, particularly distant from breeding areas. KeywordsAdult sex ratio; seabirds; incidental capture; longline fishery, sexual

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Section: Discussionmentioning

confidence: 80%

Sex-biased incidental mortality of albatrosses and petrels in longline fisheries: differential distributions at sea or differential access to baits mediated by sexual size dimorphism?

2010

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“…This is because of the usually strong winds and severe weather associated with cyclones that undergo transition, with the possibility of an explosive re‐intensification 21 . The social and biological impacts arising from the occurrence of transitioning storms are also of very significant concern 22 …”

Section: Introductionmentioning

confidence: 99%

Large‐scale Factors in Tropical and Extratropical Cyclone Transition and Extreme Weather Events

Pezza¹,

Simmonds²

2008

Annals of the New York Academy of Sciences

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Transition mechanisms characterizing changes from hurricanes to midlatitude cyclones and vice-versa (extratropical and tropical transition) have become a topic of increasing interest, partially because of their association with recent unusual storms that have developed in different ocean basins of both hemispheres. The aim of this work is to discuss some recent cases of transition and highly unusual hurricane developments and to address some of their wider implications for climate science. Frequently those dramatic cyclones are responsible for severe weather, potentially causing significant damage to property and infrastructure. An additional manifestation discussed here is their association with cold surges, a topic that has been very little explored in the literature. In the Southern Hemisphere, the first South Atlantic hurricane, Catarina, developed in March 2004 under very unusual large-scale conditions. That exceptional cyclone is viewed as a case of tropical transition facilitated by a well-developed blocking structure. A new index for monitoring tropical transition in the subtropical South Atlantic is discussed. This "South Atlantic index" is used to show that the unusual flow during and prior to Catarina's genesis can be attributed to tropical/extratropical interaction mechanisms. The "Donald Duck" case in Australia and Vince in the North Atlantic have also been examined and shown to belong to a category of hybrid-transitioning systems that will achieve at least partial tropical transition. While clearly more research is needed on the topic of transition, as we gain further insight, it is becoming increasingly apparent that features of large-scale circulation do play a fundamental role. A complex interaction between an extratropical transition case and an extreme summer cold surge affecting southeastern Australia is discussed as an example of wider climate implications.

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“…The impact of tropical storms is expected to be more severe for migratory bird species, since they face energetic constraints during their long distance movements [92, 93]. For example, the first documented hurricane in Brazil occurred in 2007 and resulted in a mass mortality of Atlantic petrels Pterodroma incerta , with at least 354 individuals found up to 420 km inland and 1,100 m above the sea level [94]. High mortalities of the Manx’s shearwater Puffinus puffinus usually occur in Southeastern Brazilian coast during adverse weather [95].…”

Section: Discussionmentioning

confidence: 99%

Environmental Predictors of Seabird Wrecks in a Tropical Coastal Area

2016

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Beached bird surveys have been widely used to monitor the impact of oil pollution in the oceans. However, separating the combined effects of oil pollution, environmental variables and methodological aspects of beach monitoring on seabird stranding patterns is a challenging task. The effects of a comprehensive set of oceanographic and climatic variables and oil pollution on seabird strandings in a tropical area of Brazil were investigated herein, using two robust and innovative methods: Generalized Linear Mixed Models and Structural Equation Modeling. We assessed strandings of four resident seabird species along 480 km of beaches divided into 11 sampling areas, between November 2010 and September 2013. We found that increasing the distance from the nearest breeding island reduce the seabird stranding events. Storm activity and biological productivity were the most important factors affecting the stranding events of brown boobies Sula leucogaster, Cabot’s terns Thalasseus acuflavidus and kelp gulls Larus dominicanus. These species are also indirectly affected by warm tropical waters, which reduce chlorophyll-a concentrations. Beach surveys are, thus, useful to investigate the mortality rates of resident species near breeding sites, where individuals are more abundant and exposed to local factors associated with at-sea mortality. In contrast, conservation actions and monitoring programs for far-ranging seabird species are needed in more distant foraging areas. Furthermore, beach monitoring programs investigating the impact of oil pollution on seabirds need to account for the effects of environmental factors on stranding patterns. The present study also demonstrated that seabirds inhabiting tropical coastal waters are sensitive to climate conditions such as adverse weather, which are expected to increase in frequency and intensity in next decades.

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Effects of the First Southern Atlantic Hurricane on Atlantic Petrels (Pterodroma Incerta)

Cited by 29 publications

References 11 publications

Sex-biased incidental mortality of albatrosses and petrels in longline fisheries: differential distributions at sea or differential access to baits mediated by sexual size dimorphism?

Sex-biased incidental mortality of albatrosses and petrels in longline fisheries: differential distributions at sea or differential access to baits mediated by sexual size dimorphism?

Large‐scale Factors in Tropical and Extratropical Cyclone Transition and Extreme Weather Events

Environmental Predictors of Seabird Wrecks in a Tropical Coastal Area

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