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5 results on '"Paiva, V. H."'

1. Identification of candidate pelagic marine protected areas through a seabird seasonal-, multispecific- and extinction risk-based approach

Author

Krüger, L., Ramos, J. A., Xavier, J. C., Grémillet, D., González-Solís, J., Kolbeinsson, Y., Militão, T., Navarro, J., Petry, M. V., Phillips, R. A., Ramírez, I., Reyes-González, J. M., Ryan, P. G., Sigurðsson, I. A., Van Sebille, E., Wanless, R. M., Paiva, V. H., Krüger, L., Ramos, J. A., Xavier, J. C., Grémillet, D., González-Solís, J., Kolbeinsson, Y., Militão, T., Navarro, J., Petry, M. V., Phillips, R. A., Ramírez, I., Reyes-González, J. M., Ryan, P. G., Sigurðsson, I. A., Van Sebille, E., Wanless, R. M., and Paiva, V. H.

Abstract

With increasing pressure on the oceans from environmental change, there has been a global call for improved protection of marine ecosystems through the implementation of marine protected areas (MPAs). Here, we used species distribution modelling (SDM) of tracking data from 14 seabird species to identify key marine areas in the southwest Atlantic Ocean, valuing areas based on seabird species occurrence, seasonality and extinction risk. We also compared overlaps between the outputs generated by the SDM and layers representing important human threats (fishing intensity, ship density, plastic and oil pollution, ocean acidification), and calculated loss in conservation value using fishing and ship density as cost layers. The key marine areas were located on the southern Patagonian Shelf, overlapping extensively with areas of high fishing activity, and did not change seasonally, while seasonal areas were located off south and southeast Brazil and overlapped with areas of high plastic pollution and ocean acidification. Non-seasonal key areas were located off northeast Brazil on an area of high biodiversity, and with relatively low human impacts. We found support for the use of seasonal areas depending on the seabird assemblage used, because there was a loss in conservation value for the seasonal compared to the non-seasonal approach when using ‘cost’ layers. Our approach, accounting for seasonal changes in seabird assemblages and their risk of extinction, identified additional candidate areas for incorporation in the network of pelagic MPAs.

Published
2017

2. Identification of candidate pelagic marine protected areas through a seabird seasonal-, multispecific- and extinction risk-based approach

Author

Krüger, L., Ramos, J. A., Xavier, J. C., Grémillet, D., González-Solís, J., Kolbeinsson, Y., Militão, T., Navarro, J., Petry, M. V., Phillips, R. A., Ramírez, I., Reyes-González, J. M., Ryan, P. G., Sigurðsson, I. A., Van Sebille, E., Wanless, R. M., Paiva, V. H., Krüger, L., Ramos, J. A., Xavier, J. C., Grémillet, D., González-Solís, J., Kolbeinsson, Y., Militão, T., Navarro, J., Petry, M. V., Phillips, R. A., Ramírez, I., Reyes-González, J. M., Ryan, P. G., Sigurðsson, I. A., Van Sebille, E., Wanless, R. M., and Paiva, V. H.

Abstract

With increasing pressure on the oceans from environmental change, there has been a global call for improved protection of marine ecosystems through the implementation of marine protected areas (MPAs). Here, we used species distribution modelling (SDM) of tracking data from 14 seabird species to identify key marine areas in the southwest Atlantic Ocean, valuing areas based on seabird species occurrence, seasonality and extinction risk. We also compared overlaps between the outputs generated by the SDM and layers representing important human threats (fishing intensity, ship density, plastic and oil pollution, ocean acidification), and calculated loss in conservation value using fishing and ship density as cost layers. The key marine areas were located on the southern Patagonian Shelf, overlapping extensively with areas of high fishing activity, and did not change seasonally, while seasonal areas were located off south and southeast Brazil and overlapped with areas of high plastic pollution and ocean acidification. Non-seasonal key areas were located off northeast Brazil on an area of high biodiversity, and with relatively low human impacts. We found support for the use of seasonal areas depending on the seabird assemblage used, because there was a loss in conservation value for the seasonal compared to the non-seasonal approach when using ‘cost’ layers. Our approach, accounting for seasonal changes in seabird assemblages and their risk of extinction, identified additional candidate areas for incorporation in the network of pelagic MPAs.

Published
2017

3. Conservation implications of consistent foraging and trophic ecology in a rare petrel species

Author

Ramírez, I., Paiva, V. H., Fagundes, I., Menezes, D., Silva, I., Ceia, F. R., Phillips, R. A., Ramos, J. A., Garthe, S., Ramírez, I., Paiva, V. H., Fagundes, I., Menezes, D., Silva, I., Ceia, F. R., Phillips, R. A., Ramos, J. A., and Garthe, S.

Abstract

Individuals within populations can use different resources, leading to ecological segregation and niche variation. This segregation could have direct impacts on the migratory strategy or breeding success, thus affecting the overall population and community dynamics and, ultimately, survival. In this study, we assessed the inter-annual and within individual foraging ecology of an endemic and highly threatened seabird species, the Desertas petrel Pterodroma deserta, during the breeding and non-breeding phases. We combined 54 annual tracks (26 individuals; 2009–2013) obtained with light-level loggers (Global Location Sensing or GLS loggers) with stable isotope analyses (δ15N and δ13C) of blood (plasma and cells) and feathers. Wide-ranging tracking data show that this species is a generalist predator, able to adapt to very different habitats. All birds remained faithful to their selected non-breeding areas over the years leading to very high spatial, temporal and trophic consistency among years (i.e. usually with intra-correlation coefficient values, which is an index of repeatability of > 40%). During both the breeding and non-breeding seasons, individual birds showed narrow and segregated isotopic niches, indicating a high level of specialization and limited choice of prey and habitats. The conservation of a seabird with such a dispersive (species-level) yet consistent (individual-level) non-breeding distribution pattern represents a challenge in marine policy terms. On the one hand, such a consistent temporal and spatial pattern will help with defining core areas for conservation, which could be protected through specific management measures or by the establishment of marine protected areas. Yet, their relatively large size (on average 4000 km2) and extent over both national and international waters, where different legislative frameworks apply, will require the coordinated action by many nations, international organizations and multilateral environmental agreements.

Published
2016

4. Distribution, habitat and trophic ecology of Antarctic squid Kondakovia longimana and Moroteuthis knipovitchi: inferences from predators and stable isotopes

Author

Seco, J., Roberts, J., Ceia, F. R., Baeta, A., Ramos, J. A., Paiva, V. H., Xavier, J. C., Seco, J., Roberts, J., Ceia, F. R., Baeta, A., Ramos, J. A., Paiva, V. H., and Xavier, J. C.

Abstract

Cephalopods have a key role in the marine environment though knowledge of their distribution and trophic ecology is limited by a lack of observations. This is particularly true for Antarctic species. Toothfish species are key predators of cephalopods and may be viewed as ideal biological samplers of these species. A total of 256 cephalopod lower beaks were identified from the stomachs of Patagonian toothfish (Dissostichus eleginoides) and Antarctic toothfish (Dissostichus mawsoni), captured in fisheries of South Georgia and the South Sandwich Islands in the South Atlantic between March and April 2009. Long-armed octopus squid (Kondakovia longimana) and smooth-hooked squid (Moroteuthis knipovitchi) were the main cephalopod prey and both were predated upon wherever toothfish were captured, though this cephalopod species appear to inhabit deeper waters at the South Sandwich Islands than at South Georgia. Measurements of δ13C from beak material indicated a clear segregation of habitat use comparing adult and sub-adult sized K. longimana. Variation in δ15N with size indicated an ontogenetic shift in the diet of cephalopods and also suggested some trophic plasticity among years. This study provides new insights into the private life of some elusive Antarctic cephalopods in an underexplored region of the South Atlantic.

Published
2016

5. A dataset of acoustic measurements from soundscapes collected worldwide during the COVID-19 pandemic

Author

Challéat, S., Farrugia, N., Froidevaux, J. S. P., Gasc, A., Pajusco, N., Abrahams, C. R., Acevedo-Charry, O., Aguiar, L. M. S., Ahlin, Z. R., Aiple, F., Albert, C. H., Alcocer, I., Alves, A. S., Amorim, F., Andrade, L. B., Araújo, P. M., Ascensão, F., Aucoin, S., Bader, E., Balbuena, D., Barbaro, L., Barbier, E., Cortés, E. B., Barrie, L. E., Bartheld, J. L., Bates, H., Baudouin, A., Beason, R. D., Beckmann, C., Beeston, A., Belá, G., Bellisario, K. M., Belshaw, S., Beltrán, J. F., Beltrão-Mendes, R., Bernard, E., Besche, T., Biro, P. A., Boléat, C., Bossaert, M., Bradley, A., Branco, P., Bredewold, W., Briggs, P. A., Briglia-Ferreira, S. R., Buckner, E., Budinski, I., Burens, A., Buxton, R. T., Canavero, A., Cardoso, P., Carrasco-Rueda, F., Caycedo, P. C., Cazaban, F., Cerveira, L. R., Ceuppens, A., Challéat, A., Larrea, A. C., Charbonneau, A., Charnaux, M., Choksi, P., Cibulka, J., Clavijo-Bustos, J., Colón-Piñeiro, Z., Conde, S., Costa, M. J., Cotão, A., Couturier, C., Scarpelli, M. D. A., da Silva, L. P., Davis, T., de Lacoste, N., Deans, S. L., Dentin, S., Deoniziak, K., Dodgin, S. R., dos Santos, I., Draganoiu, T. I., Drolet, B., Duarte, M. H. L., Duarte, G., Dubset, C., Dziock, F., Eldridge, A., Elise, S., Elliott, D. R., Enguehard, A., Esztl, K., Evans, D. M., Ferreira, D. M., Ferreira, S. A. F., Ferreira, D. F., Ferreira, A. M., Fialas, P. C., Foster-Shaner, L., Freitas, B., Friedman, N. R., Fuller, S., Galop, D., Garside, D., Gattus, J., Geoffray, S., Godart, L., Godet, L., Marques, I. G., González-Garca, F., Griesberger, P., Habib, B., Hallet, M. E., Haribal, M. M., Hatlauf, J., Haupert, S., Herrera, J. M., Herzberger, S. E., Oliveira, F. H., Hodder, K. H., Hoecherl, I., Hulme, M. F., Hyland, E., Jacobs, M., Jaiswal, A., Jégou, L., Jones, S., Jourdan, H., Jůnek, T., Khalatbari, L., Khanwilkar, S., Kitson, J. J. N., Korstjens, Amanda H., Krähenbühl-Künzli, K., Lace, N., Laguet, S., Lankau, H., Laranjeiras, T. O., Lauvin, G., Lavin, S., Le Corre, M., León, M., Levenson, J. J., Linhart, P., Linossier, J., Lizcano, D. J., Llusia, D., Lockett, M., Lopes, P. B., Lopes, R. J., López-Bao, J. V., López-Baucells, A., López-Bosch, D., Machado, R. B., Mande, C., Marchais, G., Marcolin, F., Marn Gómez, O. H., Marques, C. B., Marques, J. T., Martin, T., Mata, V., Matheu-Cortada, E., Médoc, V., Miller, K. E., Montagne, B., Moore, A., Moreno, J. M. A., Moreno-Gómez, F. N., Mueller, S., Murillo-Bedoya, D., Naka, L. N., Newton, A. C., Nunes, J. T., Nyssen, P., Marcaigh, F. Ó., O’Connell, D. P., O’Mara, M. T., Ocampo, D., Ouertani, M., Owren, J. O., Paiva, V. H., Paris, S., Parisot, M., Patankar, S., Pereira, J. M., Barreiro, S. P., Peyronnet, C., Philippe, M., Pijanowski, B. C., Pinto, N., Poff, Z., Poppele, J. M., Power, A., Pratt, V., Proppe, D. S., Proulx, R., Prugh, L., Puechmaille, S. J., Puig-Montserrat, X., Quaglietta, L., Quinn, J. E., Quiroga, N. I., Ramos, M., Rasmussen, R., Reckinger, G., Reed, M., Reginster, J., Rivera, V., Rodrigues, C. F., Rodrguez-González, P. M., Rodrguez-Rodrguez, E., Romaine, L., Roos, A. L., Rosa, J., Ross, S. R. P-J., Rouy, Q., Ryser, A. M., Sadhukhan, S., Sandfort, R., Santos, J. M., Savage, D., Schai-Braun, S. C., Scherer-Lorenzen, M., Sebag, M. S., Segurado, P., Serronha, A. M., Shaw, T., Shepherd, B., Sierra-Durán, C., Silva, B. M., Simon, V., Sinclair, P. F., Soto-Navarro, C., Sourdril, A., Sueur, J., Sugai, L. S. M., Tarrant, I. B., Tattersall, F., Templeton, C. N., Thompson, M. E., Todd, M., Tovar-Garca, J. D., Townsend, K., Tuninetti, A., Ullrich, P. A., Vargas Soto, J. S., Vega, K., Ventrice, G., Victor, P. J., Oliveras, J. V., Villén-Pérez, S., Vinet, O., Vivat, A., Vrignault, J., Walton, W. D. J., Watson, C. J., Wearn, O. R., Whyte, D. L., Windsor, F. M., Wu, Y., Xie, S., Puccherelli, I. Z., Zina, V., Silent Cities project consortium, Challéat, S., Farrugia, N., Froidevaux, J. S. P., Gasc, A., Pajusco, N., Abrahams, C. R., Acevedo-Charry, O., Aguiar, L. M. S., Ahlin, Z. R., Aiple, F., Albert, C. H., Alcocer, I., Alves, A. S., Amorim, F., Andrade, L. B., Araújo, P. M., Ascensão, F., Aucoin, S., Bader, E., Balbuena, D., Barbaro, L., Barbier, E., Cortés, E. B., Barrie, L. E., Bartheld, J. L., Bates, H., Baudouin, A., Beason, R. D., Beckmann, C., Beeston, A., Belá, G., Bellisario, K. M., Belshaw, S., Beltrán, J. F., Beltrão-Mendes, R., Bernard, E., Besche, T., Biro, P. A., Boléat, C., Bossaert, M., Bradley, A., Branco, P., Bredewold, W., Briggs, P. A., Briglia-Ferreira, S. R., Buckner, E., Budinski, I., Burens, A., Buxton, R. T., Canavero, A., Cardoso, P., Carrasco-Rueda, F., Caycedo, P. C., Cazaban, F., Cerveira, L. R., Ceuppens, A., Challéat, A., Larrea, A. C., Charbonneau, A., Charnaux, M., Choksi, P., Cibulka, J., Clavijo-Bustos, J., Colón-Piñeiro, Z., Conde, S., Costa, M. J., Cotão, A., Couturier, C., Scarpelli, M. D. A., da Silva, L. P., Davis, T., de Lacoste, N., Deans, S. L., Dentin, S., Deoniziak, K., Dodgin, S. R., dos Santos, I., Draganoiu, T. I., Drolet, B., Duarte, M. H. L., Duarte, G., Dubset, C., Dziock, F., Eldridge, A., Elise, S., Elliott, D. R., Enguehard, A., Esztl, K., Evans, D. M., Ferreira, D. M., Ferreira, S. A. F., Ferreira, D. F., Ferreira, A. M., Fialas, P. C., Foster-Shaner, L., Freitas, B., Friedman, N. R., Fuller, S., Galop, D., Garside, D., Gattus, J., Geoffray, S., Godart, L., Godet, L., Marques, I. G., González-Garca, F., Griesberger, P., Habib, B., Hallet, M. E., Haribal, M. M., Hatlauf, J., Haupert, S., Herrera, J. M., Herzberger, S. E., Oliveira, F. H., Hodder, K. H., Hoecherl, I., Hulme, M. F., Hyland, E., Jacobs, M., Jaiswal, A., Jégou, L., Jones, S., Jourdan, H., Jůnek, T., Khalatbari, L., Khanwilkar, S., Kitson, J. J. N., Korstjens, Amanda H., Krähenbühl-Künzli, K., Lace, N., Laguet, S., Lankau, H., Laranjeiras, T. O., Lauvin, G., Lavin, S., Le Corre, M., León, M., Levenson, J. J., Linhart, P., Linossier, J., Lizcano, D. J., Llusia, D., Lockett, M., Lopes, P. B., Lopes, R. J., López-Bao, J. V., López-Baucells, A., López-Bosch, D., Machado, R. B., Mande, C., Marchais, G., Marcolin, F., Marn Gómez, O. H., Marques, C. B., Marques, J. T., Martin, T., Mata, V., Matheu-Cortada, E., Médoc, V., Miller, K. E., Montagne, B., Moore, A., Moreno, J. M. A., Moreno-Gómez, F. N., Mueller, S., Murillo-Bedoya, D., Naka, L. N., Newton, A. C., Nunes, J. T., Nyssen, P., Marcaigh, F. Ó., O’Connell, D. P., O’Mara, M. T., Ocampo, D., Ouertani, M., Owren, J. O., Paiva, V. H., Paris, S., Parisot, M., Patankar, S., Pereira, J. M., Barreiro, S. P., Peyronnet, C., Philippe, M., Pijanowski, B. C., Pinto, N., Poff, Z., Poppele, J. M., Power, A., Pratt, V., Proppe, D. S., Proulx, R., Prugh, L., Puechmaille, S. J., Puig-Montserrat, X., Quaglietta, L., Quinn, J. E., Quiroga, N. I., Ramos, M., Rasmussen, R., Reckinger, G., Reed, M., Reginster, J., Rivera, V., Rodrigues, C. F., Rodrguez-González, P. M., Rodrguez-Rodrguez, E., Romaine, L., Roos, A. L., Rosa, J., Ross, S. R. P-J., Rouy, Q., Ryser, A. M., Sadhukhan, S., Sandfort, R., Santos, J. M., Savage, D., Schai-Braun, S. C., Scherer-Lorenzen, M., Sebag, M. S., Segurado, P., Serronha, A. M., Shaw, T., Shepherd, B., Sierra-Durán, C., Silva, B. M., Simon, V., Sinclair, P. F., Soto-Navarro, C., Sourdril, A., Sueur, J., Sugai, L. S. M., Tarrant, I. B., Tattersall, F., Templeton, C. N., Thompson, M. E., Todd, M., Tovar-Garca, J. D., Townsend, K., Tuninetti, A., Ullrich, P. A., Vargas Soto, J. S., Vega, K., Ventrice, G., Victor, P. J., Oliveras, J. V., Villén-Pérez, S., Vinet, O., Vivat, A., Vrignault, J., Walton, W. D. J., Watson, C. J., Wearn, O. R., Whyte, D. L., Windsor, F. M., Wu, Y., Xie, S., Puccherelli, I. Z., Zina, V., and Silent Cities project consortium

Abstract

Political responses to the COVID-19 pandemic led to changes in city soundscapes around the globe. From March to October 2020, a consortium of 261 contributors from 35 countries brought together by the Silent Cities project built a unique soundscape recordings collection to report on local acoustic changes in urban areas. We present this collection here, along with metadata including observational descriptions of the local areas from the contributors, open-source environmental data, open-source confinement levels and calculation of acoustic descriptors. We performed a technical validation of the dataset using statistical models run on a subset of manually annotated soundscapes. Results confirmed the large-scale usability of ecoacoustic indices and automatic sound event recognition in the Silent Cities soundscape collection. We expect this dataset to be useful for research in the multidisciplinary field of environmental sciences.

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