Science, Journal Year: 2024, Volume and Issue: 385(6706), P. 260 - 261
Published: July 18, 2024
Foraging niches become more specialized toward bird range limits.
Language: Английский
Ecology Letters, Journal Year: 2025, Volume and Issue: 28(1)
Published: Jan. 1, 2025
ABSTRACT Biotic interactions play an important role in species diversification and maintenance and, thus, are regarded as the architecture of biodiversity. Since Darwin Wallace, biologists have debated whether biotic stronger towards tropics on continents, when compared to temperate regions islands. Here, based 354 avian frugivory networks accounting for 22,199 between 1247 bird 2126 plant species, we quantified trait matching strength, which reflects interaction strength specificity, across gradients latitude insularity globally. We found that beak size fruit was significantly poles with As underlining ecological factors, a larger proportion (measured mean fruits diets) network‐level size, smaller fleshy‐fruited botanical country where network located). These findings suggest latitudinal insular patterns driven by factors may relate co‐evolution interacting optimal foraging species.
Language: Английский
Citations
1
Functional Ecology, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 13, 2024
Abstract Seed dispersal by frugivores is a crucial step of the life cycle most plants, influencing plant population and community dynamics. Although very important for ecosystems, we are just beginning to understand which mechanisms driving frugivore‐mediated seed dispersal. Most studies identifying drivers use interaction frequency as proxy estimating success, rather than looking at functional outcomes those interactions (e.g., contributions successful germination). A valuable tool link plant–frugivore success effectiveness (SDE) framework, accounts quantity quality components We evaluated mechanisms, including morphological traits, trait matching phenological overlap interacting species, well degree frugivory feeding behaviour frugivores, influenced (interaction number seeds dispersed per visit) (seed germination after gut passage) SDE. To this end, combined three methods (focal observations, mist‐netting camera traps) sample between birds mammals in species‐rich Cerrado southeastern Brazil. recorded 590 pairwise 34 plants 49 frugivores. found that among species explained variation frequencies. Trait affected visit more gulpers mashers peckers, frugivore body mass sizes positively germination. Finally, frequencies had stronger contribution SDE, compared with germination, indicating an indirect effect on Synthesis . highly abundant their phenologies also yield highest values suggesting was driver SDE hyperdiverse community. However, species‐specific, level necessary how communities work, current future challenges they face. Read free Plain Language Summary article Journal blog.
Language: Английский
Citations
4
Bioresource Technology, Journal Year: 2025, Volume and Issue: 419, P. 132074 - 132074
Published: Jan. 13, 2025
Language: Английский
Citations
0
Global Change Biology, Journal Year: 2025, Volume and Issue: 31(4)
Published: April 1, 2025
ABSTRACT Trait matching, the phenomenon where ecological interactions are mediated by compatibility, constitutes a cornerstone of frugivore–fruit interaction network dynamics. Given that biotic have long been hypothesized to be more intense or specialized in tropics, intensity trait matching patterns might likewise exhibit latitudinal gradient frugivory networks, yet this remains unverified. Here, we established dataset encompassing 200 avian frugivorous networks explore relationships between body mass and gape size frugivore birds fruit traits (size color) on global scale. Our results indicated were closely associated with regardless climate, demonstrating match two counterparts. We detected significant decrease toward which challenges prevailing concepts considering high biodiversity therein. structural equation modeling clarified latitude temperature exert an indirect influence affecting traits. These discoveries emphasize impact driving observed matching. The weaker tropical regions may suggest complex therein also highlights potential for altered structures amid climate change.
Language: Английский
Citations
0
Ecography, Journal Year: 2025, Volume and Issue: unknown
Published: April 21, 2025
Populations at the edge of a species' distribution often encounter more challenging environmental conditions than those core, requiring unique adaptations and strategies. However, demographic processes driving these populations remain poorly understood. This study aims to understand population stability hibernating edible dormouse under in two Iberian populations: Montseny Montnegre. Despite their geographic proximity, Montnegre is demographically isolated faces harsher environment characterized by drier climate forests with lower deciduous tree diversity, whereas remains connected other populations. Using long‐term capture–recapture data, we analyzed effects density‐dependence seed availability on growth, survival, recruitment dormice. Results indicated that both experienced large fluctuations growth rate, slight mean decline. Survival fluctuated less was higher Montnegre, likely reflecting latter. We found negative relationship between size rate survival especially suggesting significant density‐dependent varied stochastic annual abundance. influenced pulsed acorn production Contrarily, high asynchrony beechnut abundance dampened dynamics availability. Interestingly, contribution dominated When comparing rates Central European core populations, decreased increasing climatic aridity, but unrelated proximity underscoring role spatial heterogeneity habitat suitability, independent range position. Our findings emphasize complex interplay ecological evolutionary mechanisms range, highlighting critical local resource shaping dynamics.
Language: Английский
Citations
0
Published: May 13, 2025
Abstract The uplift of the Qinghai-Tibet Plateau is one greatest geological events on Earth, pivotally shaping biogeographic patterns across continents, especially for migratory species that need to overcome topographical barriers fulfil their annual circle. However, how influences animal migration strategies remains largely unclear. We compare current flyways 50 avian migrating plateau with those reconstructed before as a counterfactual. find major effect changing directions from latitudinal longitudinal. monsoon system generated by rather than high elevation per se shapes changes. These findings unveil an important global event has influenced birds, yielding testable hypotheses observed distributions emerge.
Language: Английский
Citations
0
Science, Journal Year: 2024, Volume and Issue: 385(6706), P. 260 - 261
Published: July 18, 2024
Foraging niches become more specialized toward bird range limits.
Language: Английский
Citations
0