Coexistence mechanisms and individual trophic niche variation between functionally analogous non-native and native carp species DOI Creative Commons
Yingqiu Zhang, J. Robert Britton,

Da-Hao Huang

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Ноя. 9, 2024

Understanding the mechanisms that promote coexistence between functionally analogous non-native and native species share similar prey is important for predicting ecological consequences of their competitive interactions. Theory predicts facilitated by stabilizing enhance inter-specific trophic niche partitioning, and/ or equalizing reduce differences in average fitness. Inter-specific influenced opportunity resources, also affects intra-specific partitioning individual expansion. These theories were tested using mrigal carp Cirrhinus mrigala its congener mud C. molitorella coexist across Pearl River basin, Southern China, with interactions analysed DNA metabarcoding on fish gut contents sampled basin both dry wet seasons 2019 2021. The results revealed overlap was lower than overlap, suggesting supported mechanisms. resources driving this then positively expansion, especially had larger body sizes occupied higher positions at constricted niches. Fish size affected relationship inter- positive effects but negative carp. thus provide a mechanistic explanation how closely related highlight importance dietary plasticity facilitating invasion species.

Язык: Английский

Conifers and non-native tree species shift trophic niches of generalist arthropod predators in Central European beech forests DOI Creative Commons
Benjamin Wildermuth, Riko Fardiansah, Dragan Matevski

и другие.

BMC Ecology and Evolution, Год журнала: 2023, Номер 23(1)

Опубликована: Фев. 3, 2023

Abstract Background Functional diversity is vital for forest ecosystem resilience in times of climate-induced diebacks. Admixing drought resistant non-native Douglas fir, as a partial replacement climate-sensitive Norway spruce, to native beech forests Europe appears promising management, but possible consequences associated biota and functioning are poorly understood. To better link management functional biota, we investigated the trophic niches (∆ 13 C, ∆ 15 N) epigeic generalist predators (spiders ground beetles) mixed pure stands European beech, spruce fir north-west Germany. We assessed multidimensional niche structure arthropod predator communities using community-based isotopic metrics. Results Whilst C differed most between (high C) coniferous (low C), N was lowest fir. Tree mixtures mitigated these effects. Further, conifers increased ranges richness, which linked higher canopy openness herb complexity. Isotopic divergence beetles decreased with presence, evenness spiders lower loamy sites precipitation than sandy, drier sites. Conclusions conclude that tree species particularly trees alter predators. Resource use feeding breadth significantly from more decomposer-fueled narrower richness). Arthropod however, had shorter simplified (isotopic divergence) food chains compared stands; especially under beneficial abiotic conditions evenness). These findings indicate potential adverse effects on As differences conifers, including (non-native) constitute compromise economic conservational interests.

Язык: Английский

Процитировано

11
Fishes in a seasonally pulsed wetland show spatiotemporal shifts in diet and trophic niche but not shifts in trophic position DOI Creative Commons
Peter J. Flood,

William F. Loftus,

Joel C. Trexler

и другие.

Food Webs, Год журнала: 2022, Номер 34, С. e00265 - e00265

Опубликована: Дек. 6, 2022

Язык: Английский

Процитировано

16
Integrated morpho-physiological, transcriptomic and metabolomic data to reveal the differential chilling defense mechanisms of two ecologically diverged species of Forsythia DOI Creative Commons
Jian Cui, Rong Wu, Xiaoyang Sun

и другие.

Horticultural Plant Journal, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Metre-scale vertical zonation of corals and sponges on a deep-marine cliff reflects trophic resource partitioning DOI Creative Commons

Wilder Greenman,

Francisco Javier Murillo, Bárbara de Moura Neves

и другие.

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 25, 2025

Язык: Английский

Процитировано

0
Trophic niche dynamics of two fish mesoconsumers in adjacent coastal habitats with varying nutrient regimes DOI
Rolando O. Santos, W. Ryan James, Jennifer S. Rehage

и другие.

Oecologia, Год журнала: 2025, Номер 207(3)

Опубликована: Фев. 28, 2025

Язык: Английский

Процитировано

0
Long-term convergence of salmonid isotopic niche in Lake Ontario DOI
Emma J. Bloomfield, Timothy B. Johnson

Journal of Great Lakes Research, Год журнала: 2025, Номер unknown, С. 102572 - 102572

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Improving stable isotope assessments of inter‐ and intra‐species variation in coral reef fish trophic strategies DOI Creative Commons
Jonathan D. Cybulski, Christina Skinner,

Zhongyue Wan

и другие.

Ecology and Evolution, Год журнала: 2022, Номер 12(9)

Опубликована: Сен. 1, 2022

Abstract Fish have one of the highest occurrences individual specialization in trophic strategies among Eukaryotes. Yet, few studies characterize this variation during niche analysis, limiting our understanding aquatic food web dynamics. Stable isotope analysis (SIA) with advanced Bayesian statistics is way to incorporate when quantifying size. However, using SIA investigate trophodynamics mostly focused on species‐ or guild‐level (i.e., assumed similar strategy) analyses settings where source isotopes are well‐resolved. These parameters uncommon an ecological context. Here, we use Isotope Ellipses R (SIBER) cross‐guild 11 reef fish species within oceanic atoll. We compared two‐ ( δ 15 N and 13 C) versus three‐dimensional N, C, 34 S) reconstructions isotopic space for interpreting guild‐, species‐, individual‐level strategies. Reef compositions varied significantly among, but also within, guilds. Individuals same did not cluster together based their values, suggesting within‐species specializations. Furthermore, while two‐dimensional niches helped differentiate resource use, overlap was exceptionally high. The addition S generation were needed further better evaluate potential data suggest that may reveal fluctuations availability, which detectable only C. recommend researchers include future studies.

Язык: Английский

Процитировано

10
Energetic consequences of resource use diversity in a marine carnivore DOI
Oliver N. Shipley, Philip J. Manlick,

Alisa L. Newton

и другие.

Oecologia, Год журнала: 2022, Номер 200(1-2), С. 65 - 78

Опубликована: Сен. 27, 2022

Язык: Английский

Процитировано

8
Head shape predicts isotopic diet in anoles and day geckos DOI Creative Commons

Tyler J. Figueira,

Stevie R. Kennedy‐Gold, Carla Piantoni

и другие.

Functional Ecology, Год журнала: 2023, Номер 37(6), С. 1553 - 1566

Опубликована: Апрель 14, 2023

Abstract Trophic morphology affects resource acquisition; therefore, species differences in such traits may be informative for inferring use overlap and potential interactions. In lizards, head size shape determine the hardness of prey that can consumed. Lizards with large are expected to less than lizards more similar traits. Stable isotopes increasingly being used describe diet, yet how traditional functional affect isotopic diet is often not clear a priori. We measured size, shape, 𝛿 15 N, 13 C under controlled availability an enclosure experiment using introduced Hawaiʻi test whether predict diet. Brown anoles Anolis sagrei had tallest narrowest heads, highest values C, lowest N. Gold dust day geckos Phelsuma laticauda shortest widest Green carolinensis were intermediate both morphology. As result overlap, green have reduced competitor‐free space presence other lizard species. Head was best predictor only trait explained variation within as well among sexually dimorphic, therefore weaker correlations this by sexual selection. Breadth morphospace did correlate breadth, nor amount space. While able locally depress experimental enclosures, no shifts detected response heterospecifics. The generality predicting it does so independent habitat use, warrants additional study. provides potentially fruitful avenue trait‐based approaches studying ecology evolution lizards. Read free Plain Language Summary article on Journal blog.

Язык: Английский

Процитировано

4
DNA metabarcoding, diversity partitioning and null models reveal mechanisms of seasonal trophic specialization in a Mediterranean warbler DOI Creative Commons
Daniel A. Velarde‐Garcéz, Vanessa A. Mata, Pedro Beja

и другие.

Molecular Ecology, Год журнала: 2023, Номер 33(4)

Опубликована: Дек. 20, 2023

Abstract Optimal Foraging Theory (OFT) predicts that a population's trophic niche expansion should occur in periods of food scarcity as individuals begin to opportunistically exploit sub‐optimal items. However, the Niche Variation Hypothesis (NVH) posits widening may result from increased among‐individual differentiation due partitioning avoid competition. We tested these hypotheses through DNA metabarcoding study Sardinian Warbler ( Curruca melanocephala ) diet over year. used null models and decomposition beta diversity on dietary infer mechanisms driving variation. Warblers fed frequently berries, with peak late summer and, lesser extent, autumn. Their also included wide range arthropods, their prevalence varying among seasons. Consistent OFT, width was narrower spring/summer when population strongly specialized berries. In winter, expanded, possibly reflecting seasonal declines abundance. As predicted by NVH, tended be higher but this mainly differences richness rather than resources. Overall, our results suggest within‐individual does not increase lean periods, instead, adopt either more opportunistic or foraging strategy. Increased competition help explain such patterns, instead showing expected it reflect OFT differential competitive ability access better

Язык: Английский

Процитировано

4