Building a mechanistic understanding of climate-driven elevational shifts in birds

PLOS Climate, Journal Year: 2023, Volume and Issue: 2(3), P. e0000174 - e0000174

Published: March 14, 2023

Mountains hold much of the world’s taxonomic diversity, but global climate change threatens this diversity by altering distributions montane species. While numerous studies have documented upslope shifts in elevational ranges, these patterns are highly variable across geographic regions and taxa. This variation how species’ range manifesting along gradients likely reflects mechanisms that determines ranges modulates movements, stands contrast to latitudinal gradients, where show less variability appear more predictable. Here, we review observed a single group–birds–a group has received substantial research attention thus provides useful context for exploring while controlling drive broader groups. We then explore abiotic biotic factors known define as well constraints may prevent birds from shifting. Across literature, temperature is generally invoked prime driver role precipitation neglected. However, act directly on instead mediating such habitat food availability, predator activity, parasite prevalence, which could turn modulate shifts. Dispersal ability places an intrinsic constraint shifts, exacerbated fragmentation. current strong evidence importance various drivers testing relative achieving holistic view will require integration expanding datasets, novel technologies, innovative techniques.

Language: Английский

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Monospecific mangrove reforestation changes relationship between benthic mollusc diversity and biomass: Implication for coastal wetland management

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 353, P. 120140 - 120140

Published: Jan. 30, 2024

Language: Английский

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Vulnerability of Gubernatrix cristata to climate change, anthropogenic pressures, and hybridization threats

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 9, 2025

Abstract Estimating extinction risk is challenging due to insufficient data on current and future threats. This study develops a framework incorporating the impacts of climate change, anthropogenic pressures, biotic interactions for assessing risks using endangered Yellow Cardinal ( Gubernatrix cristata ) as case study. Using ecological niche modeling (ENM) with occurrences, climate, land use data, we projected distributions G. , identifying key constraints its occurrence. Field validation through citizen science initiative contributed new presence records, supporting our model’s predictions. Currently, 4.50% cardinal’s suitable areas overlap high anthropic while 27.04% are in contact hybridizing species Diuca diuca . Future projections predict 60% shift distribution, exacerbating vulnerability greater pressures reduced protected areas. We identified distribution’s periphery, vulnerable geographic range loss increased interaction D. change. Targeted management actions recommended mitigate further degradation. illustrates potential integrating science, ENM, develop conservation strategies, offering versatile, universally applicable crucial global biodiversity efforts.

Language: Английский

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Bird Communities in a Changing World: The Role of Interspecific Competition

Diversity, Journal Year: 2022, Volume and Issue: 14(10), P. 857 - 857

Published: Oct. 11, 2022

Significant changes in the environment have potential to affect bird species abundance and distribution, both directly, through a modification of landscape, habitats, climate, indirectly, biotic interactions such as competitive interactions. Predicting mitigating consequences global change thus requires not only sound understanding role played by current ecosystems, but also recognition study complex intricate effects that result from perturbation these ecosystems. In this review, we emphasize interspecific competition communities focusing on three main predictions derived theoretical empirical considerations. We provide numerous examples population decline displacement appeared be, at least part, driven competition, were amplified environmental associated with human activities. Beyond shift relative abundance, show may negative impact richness, ecosystem services, endangered species. Despite findings, argue that, general, remains poorly understood due methodological issues complexity natural communities. is further complicated uncertainty regarding future conditions speed efficacy plastic evolutionary responses fast-changing environments. Possible directions research are highlighted.

Language: Английский

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Bird species co‐occurrence patterns in an alpine environment supports the stress‐gradient hypothesis

Oikos, Journal Year: 2021, Volume and Issue: 130(11), P. 1905 - 1918

Published: Oct. 12, 2021

Understanding the relative contribution of different biotic interactions in shaping species assemblages constitutes a major goal community ecology, and consequently, multiple methods aimed at inferring nature these associations have emerged during last decade. In this framework, stress‐gradient hypothesis (SGH) predicts that prevalent shift from competition to facilitation as abiotic stress increases (and productivity decreases). This originally raised by plant ecologists has been barely applied faunal communities. Here, we take advantage 20 years abundance data investigate pairwise patterns co‐occurrence alpine bird communities inhabiting two contrasting habitat types: forests (high productivity) mountain grasslands (low productivity). We also integrate functional with presence–absence quantitative matrices order detect signature processes driving assembly test for limiting similarity. employ null model approach, probabilistic association tests joint distribution models; all revealed higher frequency positive agreement SGH predictions. Both negative remained moderately stable over study period both types. There was no significant relationship between degree pairs their distance either habitat. However, when only considered those combinations whose deviated expected random, found co‐existing are functionally more similar than show segregated forest assemblages. Such may arise via selective social information use other processes, including microhabitat preferences. Overall, our findings suggest interspecific does not constitute force structure region. work shows analyses should be underestimated they can provide clues mechanisms responsible structure.

Language: Английский

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Effects of landscape composition and configuration on Andean birds are influenced by spatial scale

Forest Ecology and Management, Journal Year: 2024, Volume and Issue: 563, P. 121960 - 121960

Published: May 21, 2024

Land use change is impacting biodiversity worldwide with outcomes that may vary according to landscape characteristics which operate on different spatial scales. We evaluated the influence of configuration and composition at scales 100 500 m bird species richness occupancy functional groups (diet, body size, elevational ranges) in tropical Andes southern Ecuador. Surveys were conducted 57 sites varying degrees land-use change, data analyzed using Bayesian multi-species models. The results indicate a negative relationship between farmland extent both presence certain (e.g., frugivores) across native forest also emerges as significant predictor groups, but only larger scale. Furthermore, configurational features like density had positive association richness, particularly smaller Our research reveals can positively or negatively avian diversity depending Understanding how offer valuable insights for effective conservation human-influenced landscapes.

Language: Английский

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Community science data provide evidence for upward elevational range shifts by Eastern Himalayan birds

Biotropica, Journal Year: 2022, Volume and Issue: 54(6), P. 1457 - 1465

Published: June 28, 2022

Abstract The ongoing climate crisis is a significant threat to global biodiversity. As Earth warms, many species respond by shifting their geographical ranges either polewards, or in mountainous regions, upslope towards higher elevations, presumably track suitable thermal environments. Upslope range shifts are of particular concern tropical mountain because: (a) particularly thermally sensitive; (b) moving upwards could become locally extirpated as they run out habitable space; and (c) mountains harbor high fraction Earth's terrestrial Rapid can, therefore, result biodiversity losses. We used community science data over 13‐year period evaluate whether 93 Eastern Himalayan bird might be elevations. To do this, we analyzed changes occurrence probabilities eBird checklists from birdwatching hotspots at fixed found patterns consistent with shifts; elevational primarily below hotspot elevations show increases probability time, those most above elevation decline probability. Our findings suggestive rapid responses change birds. caution that special risk increasing temperatures because heightened sensitivity coupled rates warming the region. remain resilient face change, birds likely require undisturbed habitats spanning entire gradients, rising

Language: Английский

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Interspecific behavioural interference and range dynamics: current insights and future directions

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2023, Volume and Issue: 98(6), P. 2012 - 2027

Published: June 26, 2023

ABSTRACT Novel biotic interactions in shifting communities play a key role determining the ability of species' ranges to track suitable habitat. To date, impact on range dynamics have predominantly been studied context between different trophic levels or, lesser extent, exploitative competition species same level. Yet, both theory and growing number empirical studies show that interspecific behavioural interference, such as territorial mating interactions, can slow down expansions, preclude coexistence, or drive local extinction, even absence resource competition. We conducted systematic review current research into consequences interference dynamics. Our findings demonstrate there is abundant evidence by one spatial distribution another. Furthermore, we identify several gaps where more work needed test predictions from robustly. Finally, outline avenues for future research, providing suggestions how could be incorporated existing scientific frameworks understanding influence models, build stronger potential outcome

Language: Английский

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The structure of terrestrial mammal communities along an elevation gradient in the tropics.

Journal of Mammalogy, Journal Year: 2024, Volume and Issue: 105(6), P. 1392 - 1402

Published: Aug. 19, 2024

Abstract The correlates of mammal species richness and community associations along elevation gradients have resulted in conflicting results within tropical systems. We surveyed the terrestrial gallinaceous bird (>200 g body size) transects at 4 mountain sites Malaysian Borneo using camera traps to assess structuring gradient. Between 2015 2021, we Bukit Lanjak (elevation 1,300 m) Sarawak (Lanjak Entimau Wildlife Sanctuary; LEWS) Mts. Kinabalu, Tambuyukon, Magdalena (up 2,400 Sabah, with a total sample effort 20,600 nights. detected 48 mammals 9 large birds. There was mostly common pool across sites, only solely LEWS 5 Sabah. Over our limited range, no were entire range confined highest Sabah or (>1,000 m). A curve for each location indicated slight peak ~1,000 m LEWS, but mid-elevation not evident individual response curves relative abundance gradient 15 sufficient detections similar (1 exception—Malaysian Porcupine) 6 showing correlation elevation, while increased decreased elevation. multivariate analysis found herbivores lower elevations mesocarnivores higher elevations, same foraging guilds differed size As opposed studies focused on smaller vertebrate (i.e., rodents, songbirds), larger communities these mountains did form unique structure according functional traits size.

Language: Английский

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Environmental seasonality and latitude drive clutch size diversity in female lizards across populations

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110490 - 110490

Published: June 17, 2023

Global patterns in clutch size variations across species have been linked to resource availability and seasonal climate change. However, our understanding of the specific local-scale drivers diversity has remained unclear, especially among populations ectotherms with relatively homogeneous genetic structures experiencing varying local environmental conditions. And within can provide insight into adaptation or evolution key life history traits. Here, we collected data a wide-ranging female lizard (Eremias argus) from field observation literature elevations latitudes China. We then used mixed-effects models test relationship between size, body habitat type, elevation, latitudes, Unsurprisingly, was positively correlated all populations. When accounted for females at higher had larger clutches, while less variable rainfall environments smaller clutches. Interestingly, found that occupying geographic gradients (e.g., latitude elevation) certain habitats grasslands farmlands) were associated sizes. Thus, study shows support similar global macroecological species, also suggests might different reproductive decisions employed response climates maximise population replacement.

Language: Английский

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