Multi-colony tracking reveals segregation in foraging range, space use, and timing in a tropical seabird DOI

AM Trevail,

Hannah Wood,

P Carr

и другие.

Marine Ecology Progress Series, Год журнала: 2023, Номер 724, С. 155 - 165

Опубликована: Ноя. 9, 2023

Colonial animals experience density-dependent competition for food, which is posited to influence foraging range and lead inter-colony segregation. However, such patterns are poorly studied in the tropics, where predictable day lengths, oligotrophic conditions, facultative may alter relationships between intra-specific competition. Here, we GPS-tracked 207 breeding red-footed boobies Sula sula rubripes (RFB) from 4 neighbouring Chagos Archipelago colonies (~1100 9200 pairs) central Indian Ocean, determine how strategies (i.e. effort, segregation, timing) vary with colony, while accounting sex, monsoon season, stage of reproduction, year, individual. During incubation chick-rearing, RFBs commute pelagic grounds (maximum distance mean ± SE: 112.9 3.7 km; total distance: 298.4 6.2 km) over 1 5 d (18.5 1.6 h). Foraging effort was highest at largest greater among females than males. Departure angles varied colonies, leading areas that were largely spatially segregated. Timing departures arrivals strongly constrained by daylight hours, although birds colony left earliest. Our study highlights importance differences tropical seabird foraging, relate different levels Moreover, links times size suggest a previously undescribed outcome competition, highlighting understanding colonial living across multiple dimensions.

Язык: Английский

Potential environmental impacts of floating solar photovoltaic systems DOI Creative Commons
Steven Benjamins, Benjamin J. Williamson, Suzannah‐Lynn Billing

и другие.

Renewable and Sustainable Energy Reviews, Год журнала: 2024, Номер 199, С. 114463 - 114463

Опубликована: Май 9, 2024

The use of floating photovoltaic systems in freshwater and marine environments is forecast to increase dramatically worldwide within the next decade response demands for accelerated decarbonisation global economy whilst avoiding competition land, particularly near population centres. potential environmental impacts this expanding, novel technology are gradually becoming apparent warrant consideration. This study reviews evaluates various introducing arrays into aquatic (freshwater marine) ecosystems based on current state known similar industries. Environmental fall several categories including shading, hydrodynamics water-atmosphere exchange, energy emissions, benthic communities, mobile species. social acceptability ability long-term coexistence with other activities interests also discussed. Floating have an important role play decarbonisation, but close collaboration between stakeholders will be required better understand new technology. Development validation appropriate monitoring methods at scale, consideration long-term, equitable solutions identified impacts, enable sustainable expansion industry.

Язык: Английский

Процитировано

34
Status, trends and conservation of global sea turtle populations DOI Creative Commons
Graeme C. Hays, Jacques‐Olivier Laloë, Jeffrey A. Seminoff

и другие.

Опубликована: Янв. 27, 2025

Язык: Английский

Процитировано

3
Rat eradication restores nutrient subsidies from seabirds across terrestrial and marine ecosystems DOI Creative Commons
Cassandra E. Benkwitt, Rachel L. Gunn,

Matthieu Le Corre

и другие.

Current Biology, Год журнала: 2021, Номер 31(12), С. 2704 - 2711.e4

Опубликована: Апрель 21, 2021

Язык: Английский

Процитировано

75
Key issues in assessing threats to sea turtles: knowledge gaps and future directions DOI Creative Commons
Mariana M. P. B. Fuentes,

Erin McMichael,

Connie Y. Kot

и другие.

Endangered Species Research, Год журнала: 2023, Номер 52, С. 303 - 341

Опубликована: Сен. 20, 2023

Sea turtles are an iconic group of marine megafauna that have been exposed to multiple anthropogenic threats across their different life stages, especially in the past decades. This has resulted population declines, and consequently many sea turtle populations now classified as threatened or endangered globally. Although some worldwide showing early signs recovery, still face fundamental threats. is problematic since important ecological roles. To encourage informed conservation planning direct future research, we surveyed experts identify key contemporary (climate change, take, fisheries, pollution, disease, predation, coastal development) faced by turtles. Using survey results current literature, also outline knowledge gaps our understanding impact these how targeted often involving emerging technologies, could close those gaps.

Язык: Английский

Процитировано

37
Microplastics in the coral ecosystems: A threat which needs more global attention DOI
Tanmoy Biswas, Subodh Chandra Pal, Asish Saha

и другие.

Ocean & Coastal Management, Год журнала: 2024, Номер 249, С. 107012 - 107012

Опубликована: Янв. 17, 2024

Язык: Английский

Процитировано

9
Big brands impact small islands: Sources of plastic pollution in a remote and protected archipelago DOI
Jessica M. Savage,

Alice Chamberlain,

M. Fellows

и другие.

Marine Pollution Bulletin, Год журнала: 2024, Номер 203, С. 116476 - 116476

Опубликована: Май 22, 2024

Язык: Английский

Процитировано

8
Double‐tagging scores of seabirds reveals that light‐level geolocator accuracy is limited by species idiosyncrasies and equatorial solar profiles DOI Open Access
Luke R. Halpin, Jeremy D. Ross, Raúl Ramos

и другие.

Methods in Ecology and Evolution, Год журнала: 2021, Номер 12(11), С. 2243 - 2255

Опубликована: Авг. 5, 2021

Abstract Light‐level geolocators are popular bio‐logging tools, with advantageous sizes, longevity and affordability. Biologists tracking seabirds often presume geolocator spatial accuracies between 186 202 km from previously innovative, yet taxonomically, spatially computationally limited, studies. Using recently developed methods, we investigated whether assumed uncertainty norms held across a larger‐scale, multispecies study. We field‐tested accuracy by synchronously deploying these GPS loggers on scores of five species 11 Mediterranean Sea, east Atlantic south Pacific breeding colonies. first interpolated geolocations using the geolocation package FLightR without prior knowledge tracked routes. likewise applied another package, probGLS , additionally testing sea‐surface temperatures could improve route accuracy. Geolocator was lower than ~200 assumed. probGL S produced best (mean ± SD = 304 413 km, n 185 deployments) 84.5% GPS‐derived latitudes 88.8% longitudes falling within resulting estimates. (408 473 171 38.6% 23.7% package‐specific Expected inter‐twilight period (from position date) strongest predictor accuracy, increasingly equatorial solar profiles (i.e. closer temporally to equinoxes and/or Equator) inducing more error. Individuals, model also significantly affected while impact distance travelled successive twilights depended package. Geolocation is not uniform among seabird can be considerably Individual idiosyncrasies spatiotemporal dynamics shallower shifts date latitude) mean that practitioners should exercise greater caution in interpreting data avoid universal provide function capable estimating relative positions based geolocator‐observed period.

Язык: Английский

Процитировано

40
Boat noise affects meagre (Argyrosomus regius) hearing and vocal behaviour DOI
Manuel Vieira, Marilyn Beauchaud, M. Clara P. Amorim

и другие.

Marine Pollution Bulletin, Год журнала: 2021, Номер 172, С. 112824 - 112824

Опубликована: Авг. 12, 2021

Язык: Английский

Процитировано

36
Understanding Persistent Non-compliance in a Remote, Large-Scale Marine Protected Area DOI Creative Commons
Claire Collins, Ana Nuño, Annette C. Broderick

и другие.

Frontiers in Marine Science, Год журнала: 2021, Номер 8

Опубликована: Май 10, 2021

Area coverage of large-scale marine protected areas (MPAs) (LSMPAs, > 100,000 km 2 ) is rapidly increasing globally. Their effectiveness largely depends on successful detection and management non-compliance. However, for LSMPAs this can be difficult due to their large size, often remote locations a lack understanding the social drivers Taking case-study approach, we review current knowledge illegal fishing within British Indian Ocean Territory (BIOT) LSMPA. Data stemming from enforcement reports (2010–20), fieldwork in communities (2018–19) were combined explore characterise Enforcement data included vessel investigation ( n = 188), transcripts arrests (20) catch seizures (58). Fieldwork fisher interviews (95) focus groups (12), conducted two Sri Lanka previously associated with non-compliance BIOT From 2010 2020, there 126 vessels suspected non-compliance, 76% which Lankan. The majority non-compliant targeted sharks (97%), catching an estimated 14,340 individuals during study period. Lankan primarily registered one district (77%) 85% operated just ports sites. Social Network Analysis (SNA) showed that 66% linked by ties, including sharing crew members, compared only 34% compliant vessels. Thematic analysis qualitative suggested perceptions higher populations ties between may both important drivers. We discuss our findings global context identify potential solutions LSMPA management.

Язык: Английский

Процитировано

34
Seabird diversity and biomass enhance cross-ecosystem nutrient subsidies DOI Creative Commons
Cassandra E. Benkwitt, Peter Carr, Shaun K. Wilson

и другие.

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2022, Номер 289(1974)

Опубликована: Май 11, 2022

Mobile consumers are key vectors of cross-ecosystem nutrients, yet have experienced population declines which threaten their ability to fill this role. Despite importance and vulnerability, there is little information on how consumer biodiversity, in addition biomass, influences the magnitude nutrient subsidies. Here, we show that both biomass diversity seabirds enhanced provisioning nutrients across tropical islands coral reefs, but relative influence varied systems. Seabird was particularly important for terrestrial near-shore subsidies enhancing fish while seabird associated with further offshore. The positive effects were likely driven by high functional complementarity among species traits related storage provisioning. However, introduced rats non-native vegetation reduced diversity, having a stronger effect diversity. Accordingly, restoration flows provided will be most successful when stressors removed, thus protecting Recognizing mobile underlying drivers, necessary step conserving these ecosystem functions they provide.

Язык: Английский

Процитировано

28