Wednesday, 7 November 2018

GEDA at the Week of Science

This week the GEDA is taking part in the Week of  Science initiative at the IMEDEA. A speed-dating between students and researchers to talk about current scientific projects. Next date: Friday, 9h30 "Who has stolen my sandwich !?"

Friday, 26 October 2018

Recovering Shearwaters


Help to recover fledglings of Cory's shearwater attracted to land by the lights. If you find one on land call 112

Monday, 15 October 2018

New Publication on seabirds and fishery discards!

Real, E., Tavecchia, G., Genovart, M., Sanz-Aguilar, A., Payo-Payo, A. and Oro, D. 2018 Discard-ban policies can help improve our understanding of the ecological role of food availability to seabirds Scientia Marina. Special Issue. Discards regulation vs Mediterranean fisheries sustainability. M. Demestre and F. Maynou (eds.) doi: 10.3989/scimar.04746.10A

Abstract: Discards from fisheries are the most important predictable anthropogenic food subsidies (PAFS) that are being incorporated into marine ecosystems. Changes on their availability and predictability can help us to understand the role that food availability (i.e. an important indicator of the carrying capacity) plays at different ecological levels, from individual fitness to community dynamic and ecosystem functioning. For several reasons, seabirds are an excellent model for
Photo: J. Bos
evaluating the ecological effects arising from a lack of discards: 1) they are one of the most important discard scavengers, 2) they are easy to monitor and 3) they are apical predators are globally distributed, which makes them suitable health indicators of ecosystems. Here we review the existing information on seabird-discard interactions to identify the main knowledge gaps and propose new challenges for improving our understanding of the general role of food availability. We conclude that the new policies on the ban of fishery discards that are being progressively implemented in the European Union, Norway, Chile and New Zealand offer a suitable experimental scenario for improving our understanding of how a large decrease in the carrying capacity may alter demographic parameters such as survival, dispersal and reproduction, the resilience of populations against perturbations and the role of individual specialization in the foraging process.

Friday, 7 September 2018

GEDA at the 14th International Seabird Group Conference

A. Sanz-Aguilar and A. Payo Payo presented their work this week at the 14th International Seabird Group Conference held in Liverpool (schedule here). The talk by A Sanz-Aguilar was an invited plenary and the one by A. Payo Payo on the effect of PAFS on synchrony has been awarded with the third prize for the best talked presented. Congratulation Ana(s)!

Wednesday, 11 July 2018

New Publication on Tiger Mosquito presence !

Sanz-Aguilar, A., Rosselló, R, Bengoa, M, Ruiz-Pérez, M., Barceló, C., Borrás, D., Paredes-Esquivel, C., Miranda, M.-A. and Tavecchia, G., 2018. Water associated with residential areas and tourist resorts is the key predictor of Asian tiger mosquito presence on a Mediterranean island. Medical and Veterinary Entomology, doi: https://doi.org/10.1111/mve.12317
 
Abstract: The Asian tiger mosquito, Aedes albopictus (Diptera: Culicidae), is a highly invasive species and a vector of several viruses of serious concern to public health. Investigating the habitat selection of this species at small to medium scales is essential to the planning of effective prevention and control campaigns.
The present group considered detailed data for this species' presence/absence collected at 228 sites on Mallorca Island (Spain) in autumn 2015, 3 years after the first detection of the species on the island. Site occupancy models accounting for false negative detections and imperfect monitoring were used to evaluate the relationships between mosquito presence and habitat variables. In the study area, mosquito presence was negatively associated with altitude, probably as a result of greater human presence at low altitudes near the coast. 
Moreover, the presence of Ae. albopictus was positively associated with swimming pools as a result of associated gardens, plants and sources of fresh water. These two variables were combined to predict the presence of the species across the entire island.





The publication has been noticed by many journals. You can find a press release in Spanish and the list of the other notes here

Thursday, 5 July 2018

Caught on camera !

A previous work by Ana Sanz-Aguilar (here) has showed that a small number of highly specialized gulls was responsible for the observed predation at a colony of an European Storm Petrel. Selective culling directed to these individuals improved petrel breeding sucess and survival, an indication that massive culling plans might well miss the target. Ten years after, Ana found some new kids in town ... and this time she took them on camera! 



GEDA at the Week of Science

This week the GEDA is taking part in the Week of  Science initiative at the IMEDEA . A speed-dating between students and researchers to talk...