Local climate variability, phenology and morphological traits of the long distance migrants Savis warbler Locustella luscinioides and Sedge warbler Acrocephalus schoenobaenus in reedbeds of a man-made wetland in SE Iberia. DOI Creative Commons
Ignacio García Peiró

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 28, 2024

Abstract As a consequence of climatic variability in the northern hemisphere, Mediterranean region is experiencing most pronounced effects rising temperatures and decreasing precipitation. This has multitude on bird migration, with particular relevance to migratory passerines associated wetlands, whose area been decline this since last century. In order relate phenology morphology climate two species trans-Saharan migrants closely reedbeds, study analysed relationships between Savi’s warblers Locustella luscinioides Sedge Acrocephalus schoenobaenus abundances, local climatology morphological traits an inland coastal artificial wetland southeastern Iberia over 12-year period. The observed was reflected negative trend year, positive annual confirmed subsequent series. abundance warbler increased adaptively while that decreased non-adaptively, although neither change statistically significant. A two-year delay interannual peak relative warbler. monthly abundances exhibited significant correlation intra-annual temperatures, explaining approximately half phenology. No trait could be identified as explanatory factor for these trends, no year detected. Consequently, coincidence both global not established, which supports hypothesis mismatch Iberia. future scenario eastern fringe Iberian Peninsula, increase some migrants, such warbler, expected improvement, temperatures. Further studies are required ascertain whether phenomenon occurs other localities west.

Language: Английский

Wastelands or preferred-lands? Indicators for redefining desert conservation DOI
Manasi Mukherjee, Dhriti Banerjee, Indu Sharma

et al.

Journal of Arid Environments, Journal Year: 2025, Volume and Issue: 229, P. 105371 - 105371

Published: March 23, 2025

Language: Английский

Citations

0
Floating Wetland Habitats: Conceptual Design and Analysis of Enhanced Global Flyway Potential DOI
Ioana C. Giurgiu

Cities research series, Journal Year: 2025, Volume and Issue: unknown, P. 69 - 89

Published: Jan. 1, 2025

Language: Английский

Citations

0
Wind turbine noise pollution reduces songbird vocal presence through changes in abundance DOI
Yael Lehnardt, Teri E. Klein, Jesse R. Barber

et al.

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

Citations

0
Persistent species relationships characterize migrating bird communities across stopover sites and seasons DOI Creative Commons
Joely G. DeSimone, Lucas W. DeGroote,

Stuart A. Mackenzie

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(34)

Published: Aug. 13, 2024

Global migrations of diverse animal species often converge along the same routes, bringing together seasonal assemblages animals that may compete, prey on each other, and share information or pathogens. These interspecific interactions, when energetic demands are high time to complete journeys is short, influence survival, migratory success, stopover ecology, routes. Numerous accounts suggest co-migrations globally distributed in aerial, aquatic, terrestrial systems, although study migration date has rarely investigated interactions among migrating animals. Here, we test hypothesis communities engaged networks ecological interactions. We leverage over half a million records 50 bird from five banding sites collected 8 23 y for associations using social network analyses. find strong support persistent relationships across between spring fall migration. be ecologically meaningful: They stronger phylogenetically related with similar foraging behaviors nonbreeding ranges even after accounting nonsocial contributions associations, including overlap timing habitat use. While could result costly competition beneficial exchange, largely positive, suggesting limited competitive exclusion at scale station during stopovers. Our findings an understanding consist networked rather than random independently species, encouraging future studies nature consequences co-migrant

Language: Английский

Citations

3
Wastelands or Preferred-lands? Indicators for redefining Desert conservation DOI Creative Commons
Manasi Mukherjee, Dhriti Banerjee, Indu Sharma

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 17, 2024

Abstract Desert ecosystems though crucial in shaping global climate, are often perceived to have limited function and frequently designated as wastelands due low biotic diversity abundance. We explore the functional properties of desert through assessment spatio-temporal variations avian species richness insect abundance relatively understudied Thar Rajasthan. The study was conducted across four contrasting ecoregions (Western (WT), Eastern (ET), Transitional Zone (TZ), Cultivated (CZ) spanning 33 counties Monthly were obtained from crowdsourced eBird data. Insect accross curated annual surveys ZSI, India. leads corroborated with five years feeding behaviour observational data recorded a representative site 852 acres. There significant seasonal differences bird between most pronounced summer winter CZ exhibiting highest spatial variability followed by WT. WT also abundance, especially orders Orthoptera, Hymenoptera, Coleoptera, Lepidotera Diptera. correlation matrix Kernel Density Estimation (KDE) plot indicated relation diverse dietary preferences migratory patterns. These observations challenge conventional notion that resource-limited environments harbour lesser biodiversity arid environments. dominance insectivory among migrants aligns higher density resident arthropods emphasizes pivotal role insects food source during period. adaptability varied sources, particularly arthropods, provides means strategically navigate resource constraints. This thus unique framework (a) redefine importance using birds prominent ecological indicators. (b) include an criteria policy formulation for conservation. It reevaluation deserts designation eco-regions when evolving developmental well restoration strategies.

Language: Английский

Citations

2
Fuel stores and time of day account for variation in serum metabolomes of passerine migrants stopping over DOI Creative Commons
Sean V. Zimin, Anna Zimin, Eyal Shochat

et al.

Journal of Avian Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 12, 2024

Migratory birds excel in phenotypic flexibility, adapting physiologically as their life histories and environments require. Discerning the metabolic processes underlying migrants' physiology, an emergent property of multiple continuous dynamic organism–environment interactions, is therefore challenging, particularly under natural conditions. Accordingly, analyses snapshot‐sampled serum‐circulating metabolites, versatile readily applicable for migrating birds, have increasingly become method choice such physiologic inference. However, atemporal nature single sampling might obscure links between observed metabolite concentrations producing them, necessitating analytical decoupling focal from broader biochemical background. In present study, we examined how variation combined fat muscle fuel stores, traits pivotal migratory context, relates to metabolomes spring‐migrating Eurasian blackcaps stopping‐over. Our accounted potential spatiotemporal influences form time past night's fasting random local conditions across three sites within Negev Desert. We shifted focus compound‐level analysis preselected metabolites towards level inclusive metabolome, quantifying lipophilic polar molecules via UHPLC–MS/MS untargeted metabolomic technique. results indicated a general relationship stores comprising 16 326 6923 compounds, among which 918 44 were annotated, respectively. By applying generalized latent‐variable linear modeling (GLLVM) upon annotated identified several candidate biomarkers, some novel notably fuel‐associated increase serum ceramides likely derived circulating very low‐density lipoproteins (VLDLs). Relying on estimated with foraging modeled residual covariations demonstrate fuel–metabolite associations generally consistent higher fat‐ lower protein mobilization having greater decreased utilization ingested nutrients accumulate over time, thus introducing approach physiological study birds.

Language: Английский

Citations

2
Molecular changes and physiological responses involved in migratory bird fuel management and stopover decisions DOI Creative Commons
Anastasios Bounas,

Artemis Talioura,

Chrysoula Komini

et al.

Journal of Experimental Zoology Part A Ecological and Integrative Physiology, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 6, 2024

Abstract Migratory birds undertake long journeys across continents to reach breeding habitats with abundant resources. These migrations are essential for their survival and shaped by a complex interplay of physiological adaptations, behavioral cues, gene expression patterns. Central migration stopovers, critical resting points where replenish energy stores before continuing journey. In this study, we integrate measurements, observations, molecular data from temporarily caged migrating Garden Warblers ( Sylvia borin ) gain insights into stopover strategies adaptations after crossing the extended ecological barrier formed Sahara Desert Mediterranean Sea. Depleted individuals, marked low body mass flight muscle mass, showcased remarkable plasticity in recovering rapidly rebuilding within short 5‐day stopover. Flight increased during period, highlighting dynamic trade‐off between refuelling. Notably, prioritizing exhibited downregulation genes related lipid transport metabolism at same time showing evidence skeletal angiogenesis. Early arrivals were more motivated depart higher levels stress. Our study highlights importance understanding adaptive responses changing environmental conditions along routes.

Language: Английский

Citations

1
Comparative analysis of the plasma metabolome of migrating passerines: novel insights into stopover metabolism DOI Creative Commons
Adi Domer, Weronika Jasińska, Leah Rosental

et al.

Journal of Avian Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 5, 2024

During long‐distance migration, many birds experience periods of either prolonged fasting (during endurance flights) or extensive feeding stopovers). Despite decades research on avian metabolism during questions have remained unanswered, as such mainly focused targeted metabolites and fat metabolism. Here, we examined the plasma‐metabolome two migrating passerine species before they crossed Sahara Desert. Birds were sampled at sites populated by Pistacia trees bearing fat‐rich fruits an additional site dominated blooming Eucalyptus trees. The blood samples analyzed using both GC‐MS LC‐MS, untargeted approach. Examination metabolic pathways activated stopovers indicated a crucial role for cycling glucose through Cori Cahill cycles in resting recovery processes. This novel perspective, conducted free‐ranging birds, suggests evolution insulin resistance due to factors exercise, fasting, preference fatty acid oxidation akin cell trauma recovery. We detected significant inter‐site variations birds' polar lipophilic profiles. interpret differences be associated with physiological state that are considered landed night prior capture showing different profiles compared spent more time stopover site. In contrast, distinctions primary food source was available them sites. study underscores challenge interpreting commonly used indicators assessing state, which predominantly derived from lipid complex ecological systems.

Language: Английский

Citations

0
Local climate variability, phenology and morphological traits of the long distance migrants Savis warbler Locustella luscinioides and Sedge warbler Acrocephalus schoenobaenus in reedbeds of a man-made wetland in SE Iberia. DOI Creative Commons
Ignacio García Peiró

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 28, 2024

Abstract As a consequence of climatic variability in the northern hemisphere, Mediterranean region is experiencing most pronounced effects rising temperatures and decreasing precipitation. This has multitude on bird migration, with particular relevance to migratory passerines associated wetlands, whose area been decline this since last century. In order relate phenology morphology climate two species trans-Saharan migrants closely reedbeds, study analysed relationships between Savi’s warblers Locustella luscinioides Sedge Acrocephalus schoenobaenus abundances, local climatology morphological traits an inland coastal artificial wetland southeastern Iberia over 12-year period. The observed was reflected negative trend year, positive annual confirmed subsequent series. abundance warbler increased adaptively while that decreased non-adaptively, although neither change statistically significant. A two-year delay interannual peak relative warbler. monthly abundances exhibited significant correlation intra-annual temperatures, explaining approximately half phenology. No trait could be identified as explanatory factor for these trends, no year detected. Consequently, coincidence both global not established, which supports hypothesis mismatch Iberia. future scenario eastern fringe Iberian Peninsula, increase some migrants, such warbler, expected improvement, temperatures. Further studies are required ascertain whether phenomenon occurs other localities west.

Language: Английский

Citations

0