High-intensity urban light installation dramatically alters nocturnal bird migration

Proceedings of the National Academy of Sciences, Journal Year: 2017, Volume and Issue: 114(42), P. 11175 - 11180

Published: Oct. 2, 2017

Significance Artificial light at night is a novel stimulus in the evolutionary history of nocturnal animals. Light pollution can significantly alter these organisms’ behaviors, from migration to foraging vocal communication. Nocturnally migrating birds are particularly susceptible artificial because adaptations and requirements for navigating orienting darkness. However, light’s effects on in-flight behaviors have not been well quantified, especially urbanized environments. Here we report that an iconic urban installation dramatically altered multiple nocturnally birds—but disappeared when lights were extinguished. We recommend selective removal during nights with substantial bird mitigate negative birds, particular collisions lighted structures.

Language: Английский

---

Animal migration in the Anthropocene: threats and mitigation options

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(4), P. 1242 - 1260

Published: March 4, 2024

ABSTRACT Animal migration has fascinated scientists and the public alike for centuries, yet migratory animals are facing diverse threats that could lead to their demise. The Anthropocene is characterised by reality humans dominant force on Earth, having manifold negative effects biodiversity ecosystem function. Considerable research focus been given assessing anthropogenic impacts numerical abundance of species/populations, whereas relatively less attention devoted animal migration. However, there clear linkages, example, where human‐driven behaviour can population/species declines or even extinction. Here, we explore (in all domains – aquatic, terrestrial, aerial) using International Union Conservation Nature (IUCN) Threat Taxonomy classifications. We reveal (e.g. human development, disease, invasive species, climate change, exploitation, pollution) impact wildlife in varied ways spanning taxa, life stages type from direct mortality changes behaviour, health, physiology). Notably, these often interact complex unpredictable detriment wildlife, further complicating management. Fortunately, beginning identify strategies conserving managing Anthropocene. provide a set that, if embraced, have potential ensure animals, important ecological functions sustained migration, persist.

Language: Английский

---

Integrating physiology into movement ecology of large terrestrial mammals

Journal of Experimental Biology, Journal Year: 2025, Volume and Issue: 228(Suppl_1)

Published: Feb. 15, 2025

ABSTRACT Movement paths are influenced by external factors and depend on an individual's navigation capacity (Where to move?), motion (How move?) ultimately driven internal physiological state (Why move?). Despite physiology underlying most aspects of this movement ecology framework, the physiology–movement nexus remains understudied in large terrestrial mammals. Within Commentary, we highlight processes that underpin framework how integrating measurements can provide mechanistic insights may enhance our understanding drivers animal movement. We focus mammals, which well represented within literature but under-represented studies integrate state. Recent advances biologging technology allow for variables, such as heart rate body movements, be recorded remotely continuously free-living animals. Biologging temperature additional into states driving Body not only provides a measure thermal stress, also index wellbeing through quantification nutrition, hydration, reproductive disease drive movements. Integrating measures with fine-scale GPS locations causality improve movement, is crucial population performance monitoring reintroduction success. recommend baseline undertaken, linking mechanisms, development realistic predictive models conservation efforts Anthropocene.

Language: Английский

---

Humpback whale migrations to Antarctic summer foraging grounds through the southwest Pacific Ocean

Scientific Reports, Journal Year: 2018, Volume and Issue: 8(1)

Published: Aug. 13, 2018

Humpback whale (Megaptera novaeangliae) populations typically undertake seasonal migrations, spending winters in low latitude breeding grounds and summers foraging high feeding grounds. Until recently, a broad scale understanding of movement has been derived from whaling records, Discovery marks, photo identification genetic analyses. However, with advances satellite tagging technology concurrent development analytical methodologies we can now detail finer humpback movement, infer behavioural context examine how these animals interact their physical environment. Here describe the temporal spatial characteristics migration along east Australian seaboard into Southern Ocean by 30 whales tagged over three consecutive austral summers. We characterise putative Antarctic identify supplemental within temperate, migratory corridors. demonstrate that habitat is associated marginal ice zone, key predictors inferred behaviour including distance edge, melt rate variability concentration two months prior to arrival. discuss highly variable season implications this other environmental factors may have on continued strong recovery population.

Language: Английский

---

Timing is everything: Drivers of interannual variability in blue whale migration

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: May 7, 2020

Abstract Blue whales need to time their migration from breeding grounds feeding avoid missing peak prey abundances, but the cues they use for this are unknown. We examine timing (inferred local onset and cessation of blue whale calls recorded on seafloor-mounted hydrophones), environmental conditions (e.g., sea surface temperature anomalies chlorophyll a ), (spring krill biomass annual net tow surveys) during 10 year period (2008–2017) in waters Southern California Region where feed summer. Colder previous season were correlated with greater following year, earlier arrival by whales. Our results demonstrate plastic response interannual variability importance as driving force behind timing. A decadal-scale increase due climate change has led extending overall California. By end our 10-year study, arriving at more than one month earlier, while departure date did not change. Conservation strategies will account increased anthropogenic threats resulting longer times grounds.

Language: Английский

---

Does behavioural thermoregulation underlie seasonal movements in Lake Erie walleye?

Canadian Journal of Fisheries and Aquatic Sciences, Journal Year: 2018, Volume and Issue: 75(3), P. 488 - 496

Published: Jan. 22, 2018

Thermoregulation is presumed to be a widespread determinant of behaviour in fishes, but has not often been investigated as mechanism shaping long-distance migrations. We used acoustic telemetry and animal-borne thermal loggers test the hypothesis that seasonal migration adult walleye (Sander vitreus) Lake Erie size- (or) sex-specific related behavioural thermoregulation. Female migrated out warm, shallow western basin earlier than did males were 1.8 times more likely detected on receivers deeper cooler eastern basin. The few fish remained restricted smaller range higher temperatures (≥20 °C) those central basins (∼16–21 °C). However, temperature records from nearly indistinguishable basin, suggesting preferences alone could explain As such, our effort understand mechanisms cause migratory behaviours generated mixed evidence role factors like foraging opportunities may have synergistic roles migration.

Language: Английский

---

A Dynamic State Model of Migratory Behavior and Physiology to Assess the Consequences of Environmental Variation and Anthropogenic Disturbance on Marine Vertebrates

The American Naturalist, Journal Year: 2017, Volume and Issue: 191(2), P. E40 - E56

Published: Dec. 13, 2017

Integrating behavior and physiology is critical to formulating new hypotheses on the evolution of animal life-history strategies. Migratory capital breeders acquire most energy they need sustain migration, gestation, lactation before parturition. Therefore, when predicting impact environmental variation such species, a mechanistic understanding their migratory required. Using baleen whales as model system, we developed dynamic state variable that captures interplay among behavioral decisions, energy, reproductive needs, environment. We applied framework blue (Balaenoptera musculus) in eastern North Pacific Ocean explored effects anthropogenic perturbations female success. demonstrate emergence migration track prey resources, enabling us quantify trade-offs breeding, body condition, metabolic expenses. predict periodic climatic oscillations affect success less than unprecedented changes do. The effect localized, acute impacts depended whales' response disturbance; chronic, but weaker, disturbances had little Because link vital rates by modeling individuals' energetic budgets, provide general investigate ecology assess population consequences disturbance, while identifying knowledge gaps.

Language: Английский

---

The physiology of movement

Movement Ecology, Journal Year: 2020, Volume and Issue: 8(1)

Published: Feb. 4, 2020

Abstract Movement, from foraging to migration, is known be under the influence of environment. The translation environmental cues individual movement decision making determined by an individual’s internal state and anticipated balance costs benefits. General body condition, metabolic hormonal physiology mechanistically underpin this state. These physiological determinants are tightly, often genetically linked with each other hence central a mechanistic understanding movement. We here synthesise available evidence drivers signatures review (1) how as measured in its most coarse way condition correlates decisions during foraging, migration dispersal, (2) changes underlie these strategies (3) can molecular pathways. reveale that high facilitates efficiency routine dispersal migration. Dispersal is, however, some cases stimulated decreased condition. Many biotic abiotic stressors induce initiate cascade vertebrates through production stress hormones. Movement therefore associated hormone levels but also insects, interaction factors related or social underlying mechanisms currently studied few model species, show –in congruence our insights on role condition- energy metabolism glycolysis, coupling timing processes Molecular into basis remain, highly refractory. finalise critical reflection importance feedbacks for better effects ecological dynamics at all biological organization.

Language: Английский

---

A year in the life of a North Atlantic seabird: behavioural and energetic adjustments during the annual cycle

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: April 7, 2020

Abstract During their annual cycles, animals face a series of energetic challenges as they prioritise different life history events by engaging in temporally and potentially spatially segregated reproductive non-breeding periods. Investigating behaviour energy use across these periods is fundamental to understanding how survive the changing conditions associated with cycles. We estimated year-round activity budgets, expenditure, location, colony attendance foraging for surviving individuals from population common guillemots Uria aalge . Despite potential constraints reduced day lengths sea surface temperatures winter, managed expenditure throughout year. Values were high prior during breeding season, driven combination thermoregulatory costs, diving activity, flight. Guillemots also exhibited partial outside likely supported local resources. Additionally, there was mismatch timing peaks dive effort peak nocturnal indicating that adapted availability prey rather than daylight. Our study identifies adaptations flexibility budgets mechanisms enable manage cycle.

Language: Английский

---

Light pollution: A review of the scientific literature

The Anthropocene Review, Journal Year: 2021, Volume and Issue: 10(2), P. 367 - 392

Published: Nov. 18, 2021

Light pollution is the consequence of elevated lighting emitted by human-made artefacts to lower atmosphere. Recently, there have been major advances in assessment and mitigation light impacts on humans natural ecosystems. Severe negative highlighted while very few measures implemented. People (scientists, policymakers or stakeholders) interested may not a holistic perspective problem, also need for incorporating social dimensions. Therefore, main goal this paper review literature using ISI Web Science paying attention (i) type publication, year journal; (ii) specific elements; (iii) location (iv) methods used. Our results indicated that number papers come from diverse range disciplines, methods, places scales. It clear getting enough scientific community but decisions implementation are left with stakeholders, ordinary inhabitants, politicians. Nevertheless, having health ecosystem as perceived experts inhabitants divergent perspectives. Thus, multifaceted difficult be faced, mitigated holistically understood. This groups total Earth presents some contradictory results, summarises measures, provides future research directions.

Language: Английский

---