13 Works

Data from: Trophic niche width increases with bill size variation in a generalist passerine: a test of the niche variation hypothesis

Yu-Cheng Hsu, Pei-Jen Shaner, Chun-I Chang, Linhua Ke & Shuh-Ji Kao
1. The niche variation hypothesis (NVH) predicts that populations with wider niches are phenotypically more variable than populations with narrower niches, which is frequently used to explain diversifying processes such as ecological release. However, not all empirical evidence supports the NVH. Furthermore, a relationship between population phenotypic variation and niche width can be caused by sexual selection or environmental gradients, which should be carefully considered along with competition in explaining niche variation. 2. In this...

Data from: Impacts of temperature and lunar day on gene expression profiles during a monthly reproductive cycle in the brooding coral Pocillopora damicornis

Camerron M. Crowder, Eli Meyer, Tung-Yung Fan & Virginia M. Weis
Reproductive timing in brooding corals has been correlated to temperature and lunar irradiance, but the mechanisms by which corals transduce these environmental variables into molecular signals are unknown. To gain insight into these processes, global gene expression profiles in the coral Pocillopora damicornis were examined (via RNA-Seq) across lunar phases and between temperature treatments, during a monthly planulation cycle. The interaction of temperature and lunar day together had the largest influence on gene expression. Mean...

Morphological and isotope data on three passerines in Taiwan

Pei-Jen Shaner & Yu‐Cheng Hsu
The niche variation hypothesis (NVH) predicts that populations with wider niches exhibit greater morphological variation through increased inter-individual differences in both niche and morphology. In this study, we examined niche-trait relationships in three passerine species (Cyanoderma ruficeps, Sinosuthora webbiana, Zosterops simplex). A total of 289 C. ruficeps from 7 sites, 259 S. webbiana from 8 sites, and 144 Z. simplex from 6 sites were sampled along an elevation gradient (0-2,700 m) in Taiwan from 2009...

Data from: ENSO and frost co-determine decade-long temporal variation in flower and seed production in a subtropical rain forest

Chia-Hao Chang-Yang, I-Fang Sun, Cheng-Han Tsai, Chia-Ling Lu & Chang-Fu Hsieh
Flower and seed production of plants can be greatly influenced by both natural climatic oscillations and local weather extremes. However, owing to the rarity of long-term monitoring studies conducted at a sufficient temporal scale to capture climatic oscillations and the unpredictability of extreme weather events, evidence that demonstrates how these two external forcings act in concert to drive plant reproduction remains scarce. In addition, considerable variation in species’ phenological responses to the external climatic forcings...

Data from: Seed size and the evolution of leaf defences

Thomas S. Kraft, S. Joseph Wright, Ian Turner, Peter W. Lucas, Christopher E. Oufiero, , I-Fang Sun & Nathaniel J. Dominy
1. Leaf defences vary widely among tree species, affecting rates of herbivory, survival and reproduction. 2. Two contrasting hypotheses account for variation in leaf defences among species. The first predicts that a slow life history, which is characteristic of larger seeded species adapted to resource-limited environments, is associated with well-defended leaves. The second, apparency theory, predicts that elevated leaf defences are necessitated for species that are more detectable to herbivores. 3. Here we use comparative...

Data from: Egg rejection and clutch phenotype variation in the plain prinia (Prinia inornata)

Longwu Wang, Wei Liang, Canchao Yang, Shun-Jen Cheng, Yu-Cheng Hsu & Xin Lu
Avian hosts of brood parasites can evolve anti-parasitic defenses to recognize and reject foreign eggs from their nests. Theory predicts that higher inter-clutch and lower intra-clutch variation in egg appearance facilitates hosts to detect parasitic eggs as egg-rejection mainly depends on the appearance of the egg. Therefore, we predict that egg patterns and rejection rates will differ when hosts face different intensity of cuckoo parasitism. We tested this prediction in two populations of the plain...

Demographic rates and stature of tree species in 13 sub-tropical forests: annual growth, annual survival, annual recruitment >( 1 cm dbh), stature (max dbh)

Stephan Kambach, Richard Condit, Salomón Aguilar, Helge Bruelheide, Sarayudh Bunyavejchewin, Chia-Hao Chang-Yang, Yu-Yun Chen, George Chuyong, Stuart J. Davies, Sisira Ediriweera, Corneille E. N. Ewango, Edwino S. Fernando, Nimal Gunatilleke, Savitri Gunatilleke, Stephen P Hubbell, Akira Itoh, David Kenfack, Somboon Kiratiprayoon, Yi-Ching Lin, Jean-Remy Makana, Mohizah Bt. Mohamad, Nantachai Pongpattananurak, Rolando Pérez, Lillian Jennifer V. Rodriguez, I-Fang Sun … & Nadja Rüger
Organisms of all species must balance their allocation to growth, survival and recruitment. Among tree species, evolution has resulted in different life-history strategies for partitioning resources to these key demographic processes. Life-history strategies in tropical forests have often been shown to align along a trade-off between fast growth and high survival, i.e. the well-known fast-slow continuum. In addition, an orthogonal trade-off has been proposed between tall stature – resulting from fast growth and high survival...

Closing the life cycle of forest trees: The difficult dynamics of seedling-to-sapling transitions in a subtropical rain forest

Chia-Hao Chang-Yang, Jessica Needham, Chia-Ling Lu, Chang-Fu Hsieh, I-Fang Sun & Sean McMahon
1. Experimental and observational studies on seedling dynamics posit mechanisms that can influence forest diversity, structure, and function. However, high mortality and slow growth of seedlings make it difficult to evaluate the importance of this life-history filter to total tree life history. Quantifying the duration and transition of the seedling phase would help us understand this ‘black box’ in tree population biology. 2. We used a 16-year dataset of comprehensive seedling-to-sapling demography from a subtropical...

Extra high superoxide dismutase in host tissue upgrades bleaching resistance in the “thermal adapted” and Durusdinium trenchii-associating coral

Jih-Terng Wang, Yu-Ting Wang, Allen Chen, Pei-Jei Meng, Kwee Siong Tew, Pei-Wen Chiang & Sen-Lin Tang
Global warming threatens reef-building corals with large scale bleaching events. Before being too late, uncovering potential adaptive capabilities to increasing temperature becomes one of the major thinking of saving corals. This study presents two coral species (Platygyra verweyi and Isopora palifera) surviving from a reef with regular hot water influx via a nearby nuclear power plant exhibited completely different bleaching susceptibility to acute thermal stress, even though both species shared several so-called “winner” characteristics (e.g.,...

Species packing and the latitudinal gradient in local beta-diversity

Ke Cao, Richard Condit, Xiangcheng Mi, Lei Chen, Wubing Xu, David F. R. P. Burslem, Chunrong Cai, Min Cao, Li-Wan Chang, Chengjin Chu, Hu Du, Sisira Ediriweera, C. S. V. Gunatilleke, I. U. A. N. Gunatilleke, Zhanqing Hao, Jinbo Li, Guangze Jin, Buhang Li, Yankun Liu, Yide Li, Michael J. O'Brien, Xiujuan Qiao, Hongwei Ni, Guochun Shen, Xihua Wang … & Jens-Christian Svenning
The decline in species richness at higher latitudes is among the most fundamental patterns in ecology. Whether changes in species composition across space (beta-diversity) contribute to this gradient of overall local species richness (gamma diversity) remains hotly debated. Previous studies that failed to resolve the issue suffered from a well-known tendency for small samples in areas with high gamma-diversity to have inflated measures of beta-diversity. We provide here a novel analytical test, using beta-diversity metrics...

Data from: Tree circumference dynamics in four forests characterized using automated dendrometer bands

Valentine Herrmann, Sean M. McMahon, Matteo Detto, James A. Lutz, Stuart J. Davies, Chia-Hao Chang-Yang & Kristina J. Anderson-Teixeira
Stem diameter is one of the most commonly measured attributes of trees, forming the foundation of forest censuses and monitoring. Changes in tree stem circumference include both irreversible woody stem growth and reversible circumference changes related to water status, yet these fine-scale dynamics are rarely leveraged to understand forest ecophysiology and typically ignored in plot- or stand-scale estimates of tree growth and forest productivity. Here, we deployed automated dendrometer bands on 12–40 trees at four...

Data from: Species-specific flowering cues among general flowering Shorea species at the Pasoh Research Forest, Malaysia

Yu-Yun Chen, Akiko Satake, I-Fang Sun, Yoshiko Kosugi, Makoto Tani, Shinya Numata, Stephen P. Hubbell, Christine Fletcher, Nur Supardi Md.Noor, S. Joseph Wright &
1.In a unique phenomenon restricted to the ever wet forests of Southeast Asia, hundreds of species from dozens of plant families reproduce synchronously at irregular, multi-year intervals. The proximate environmental cues that synchronize these general flowering events have not been evaluated systematically because there have been no long-term, high temporal-resolution, species-level records from the region. 2.We present 13 years of weekly flowering records for five Shorea species as well as daily temperature and rainfall records...

Data from: Climate niche differentiation between two passerines despite ongoing gene flow

Shou-Hsien Li, Pei-Jen L. Shaner, Tzu-Hsuan Tsao, Rong-Chien Lin, Wei Liang, Chia-Fen Yeh, Xiao-Jun Yang, Fu-Min Lei, Fang Zhou, Can-Chao Yang & Yu-Cheng Hsu
Niche evolution underpins the generation and maintenance of biological diversity, but niche conservatism, in which niches remain little changed over time in closely related taxa and the role of ecology in niche evolution are continually debated. To test whether climate niches are conserved in two closely related passerines in East Asia – the vinous-throated (Paradoxornis webbianus) and ashy-throated (P. alphonsianus) parrotbills – we established their potential allopatric and sympatric regions using ecological niche models and...

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