Browsing by Author "Broderick, AC"

Now showing 1 - 5 of 5
  • Thumbnail Image
    ItemOpen Access
    Are we working towards global research priorities for management and conservation of sea turtles?
    (Endangered Species Research, 2016-12-30) Rees, AF; Alfaro-Shigueto, J; Barata, PCR; Bjorndal, KA; Bolten, AB; Bourjea, J; Broderick, AC; Campbell, LM; Cardona, L; Carreras, C; Casale, P; Ceriani, SA; Dutton, PH; Eguchi, T; Formia, A; Fuentes, MMPB; Fuller, WJ; Girondot, M; Godfrey, MH; Hamann, M; Hart, KM; Hays, GC; Hochscheid, S; Kaska, Y; Jensen, MP; Mangel, JC; Mortimer, JA; Naro-Maciel, E; Ng, CKY; Nichols, WJ; Phillott, AD; Reina, RD; Revuelta, O; Schofield, G; Seminoff, JA; Shanker, K; Tomás, J; van de Merwe, JP; Van Houtan, KS; Vander Zanden, HB; Wallace, BP; Wedemeyer-Strombel, KR; Work, TM; Godley, BJ
    © The authors 2016. In 2010, an international group of 35 sea turtle researchers refined an initial list of more than 200 research questions into 20 metaquestions that were considered key for management and conservation of sea turtles. These were classified under 5 categories: reproductive biology, biogeography, population ecology, threats and conservation strategies. To obtain a picture of how research is being focused towards these key questions, we undertook a systematic review of the peer-reviewed literature (2014 and 2015) attributing papers to the original 20 questions. In total, we reviewed 605 articles in full and from these 355 (59%) were judged to substantively address the 20 key questions, with others focusing on basic science and monitoring. Progress to answering the 20 questions was not uniform, and there were biases regarding focal turtle species, geographic scope and publication outlet. Whilst it offers some meaningful indications as to effort, quantifying peer-reviewed literature output is ob viously not the only, and possibly not the best, metric for understanding progress towards informing key conservation and management goals. Along with the literature review, an international group based on the original project consortium was assigned to critically summarise recent progress towards answering each of the 20 questions. We found that significant research is being expended towards global priorities for management and conservation of sea turtles. Although highly variable, there has been significant progress in all the key questions identified in 2010. Undertaking this critical review has highlighted that it may be timely to undertake one or more new prioritizing exercises. For this to have maximal benefit we make a range of recommendations for its execution. These include a far greater engagement with social sciences, widening the pool of contributors and focussing the questions, perhaps disaggregating ecology and conservation.
  • Thumbnail Image
    ItemOpen Access
    Global research priorities for sea turtles: informing management and conservation in the 21st century
    (Endangered Species Research, 2010-05-26) Hamann, M; Godfrey, MH; Seminoff, JA; Arthur, K; Barata, PCR; Bjorndal, KA; Bolten, AB; Broderick, AC; Campbell, LM; Carreras, C; Casale, P; Chaloupka, M; Chan, SKF; Coyne, MS; Crowder, LB; Diez, CE; Dutton, PH; Epperly, SP; FitzSimmons, NN; Formia, A; Girondot, M; Hays, GC; I Jiunn, C; Kaska, Y; Lewison, R; Mortimer, JA; Nichols, WJ; Reina, RD; Shanker, K; Spotila, JR; Tomás, J; Wallace, BP; Work, TM; Zbinden, J; Godley, BJ
    Over the past 3 decades, the status of sea turtles and the need for their protection to aid population recovery have increasingly captured the interest of government agencies, non-governmental organisations (NGOs) and the general public worldwide. This interest has been matched by increased research attention, focusing on a wide variety of topics relating to sea turtle biology and ecology, together with the interrelations of sea turtles with the physical and natural environments. Although sea turtles have been better studied than most other marine fauna, management actions and their evaluation are often hindered by the lack of data on turtle biology, human-turtle interactions, turtle population status and threats. In an effort to inform effective sea turtle conservation a list of priority research questions was assembled based on the opinions of 35 sea turtle researchers from 13 nations working in fields related to turtle biology and/or conservation. The combined experience of the contributing researchers spanned the globe as well as many relevant disciplines involved in conservation research. An initial list of more than 200 questions gathered from respondents was condensed into 20 metaquestions and classified under 5 categories: reproductive biology, biogeography, population ecology, threats and conservation strategies. © Inter-Research 2010.
  • Thumbnail Image
    ItemOpen Access
    Network analysis of sea turtle movements and connectivity: A tool for conservation prioritization
    (Diversity and Distributions, 2022-04-01) Kot, CY; Åkesson, S; Alfaro-Shigueto, J; Amorocho Llanos, DF; Antonopoulou, M; Balazs, GH; Baverstock, WR; Blumenthal, JM; Broderick, AC; Bruno, I; Canbolat, AF; Casale, P; Cejudo, D; Coyne, MS; Curtice, C; DeLand, S; DiMatteo, A; Dodge, K; Dunn, DC; Esteban, N; Formia, A; Fuentes, MMPB; Fujioka, E; Garnier, J; Godfrey, MH; Godley, BJ; González Carman, V; Harrison, AL; Hart, CE; Hawkes, LA; Hays, GC; Hill, N; Hochscheid, S; Kaska, Y; Levy, Y; Ley-Quiñónez, CP; Lockhart, GG; López-Mendilaharsu, M; Luschi, P; Mangel, JC; Margaritoulis, D; Maxwell, SM; McClellan, CM; Metcalfe, K; Mingozzi, A; Moncada, FG; Nichols, WJ; Parker, DM; Patel, SH; Pilcher, NJ; Poulin, S; Read, AJ; Rees, AF; Robinson, DP; Robinson, NJ; Sandoval-Lugo, AG; Schofield, G; Seminoff, JA; Seney, EE; Snape, RTE; Sözbilen, D; Tomás, J; Varo-Cruz, N; Wallace, BP; Wildermann, NE; Witt, MJ; Zavala-Norzagaray, AA; Halpin, PN
    Aim: Understanding the spatial ecology of animal movements is a critical element in conserving long-lived, highly mobile marine species. Analyzing networks developed from movements of six sea turtle species reveals marine connectivity and can help prioritize conservation efforts. Location: Global. Methods: We collated telemetry data from 1235 individuals and reviewed the literature to determine our dataset's representativeness. We used the telemetry data to develop spatial networks at different scales to examine areas, connections, and their geographic arrangement. We used graph theory metrics to compare networks across regions and species and to identify the role of important areas and connections. Results: Relevant literature and citations for data used in this study had very little overlap. Network analysis showed that sampling effort influenced network structure, and the arrangement of areas and connections for most networks was complex. However, important areas and connections identified by graph theory metrics can be different than areas of high data density. For the global network, marine regions in the Mediterranean had high closeness, while links with high betweenness among marine regions in the South Atlantic were critical for maintaining connectivity. Comparisons among species-specific networks showed that functional connectivity was related to movement ecology, resulting in networks composed of different areas and links. Main conclusions: Network analysis identified the structure and functional connectivity of the sea turtles in our sample at multiple scales. These network characteristics could help guide the coordination of management strategies for wide-ranging animals throughout their geographic extent. Most networks had complex structures that can contribute to greater robustness but may be more difficult to manage changes when compared to simpler forms. Area-based conservation measures would benefit sea turtle populations when directed toward areas with high closeness dominating network function. Promoting seascape connectivity of links with high betweenness would decrease network vulnerability.
  • Thumbnail Image
    ItemOpen Access
    Plastic and marine turtles: A review and call for research
    (ICES Journal of Marine Science, 2016-01-01) Nelms, SE; Duncan, EM; Broderick, AC; Galloway, TS; Godfrey, MH; Hamann, M; Lindeque, PK; Godley, BJ
    © International Council for the Exploration of the Sea 2015. Plastic debris is now ubiquitous in the marine environment affecting a wide range of taxa, from microscopic zooplankton to large vertebrates. Its persistence and dispersal throughout marine ecosystems has meant that sensitivity toward the scale of threat is growing, particularly for species of conservation concern, such as marine turtles. Their use of a variety of habitats, migratory behaviour, and complex life histories leave them subject to a host of anthropogenic stressors, including exposure to marine plastic pollution. Here, we review the evidence for the effects of plastic debris on turtles and their habitats, highlight knowledge gaps, and make recommendations for future research. We found that, of the seven species, all are known to ingest or become entangled in marine debris. Ingestion can cause intestinal blockage and internal injury, dietary dilution, malnutrition, and increased buoyancy which in turn can result in poor health, reduced growth rates and reproductive output, or death. Entanglement in plastic debris (including ghost fishing gear) is known to cause lacerations, increased drag - which reduces the ability to forage effectively or escape threats - and may lead to drowning or death by starvation. In addition, plastic pollution may impact key turtle habitats. In particular, its presence on nesting beaches may alter nest properties by affecting temperature and sediment permeability. This could influence hatchling sex ratios and reproductive success, resulting in population level implications. Additionally, beach litter may entangle nesting females or emerging hatchlings. Lastly, as an omnipresent and widespread pollutant, plastic debris may cause wider ecosystem effects which result in loss of productivity and implications for trophic interactions. By compiling and presenting this evidence, we demonstrate that urgent action is required to better understand this issue and its effects on marine turtles, so that appropriate and effective mitigation policies can be developed.
  • Thumbnail Image
    ItemOpen Access
    Reflections on sea turtle conservation
    (Oryx, 2020-05) Godley, BJ; Broderick, AC; Colman, LP; Formia, A; Godfrey, MH; Hamann, M; Nuno, A; Omeyer, LCM; Patrício, AR; Phillott, AD; Rees, AF; Shanker, K