9 Works

Phosphorus release from intact soil monoliths of manure amended fields under simulated snowmelt flooding

Darshani Kumaragamage, Angela Concepcion, Wole Akinremi, Saman Dharmakeerthi, Doug Goltz & Srimathie Indraratne
Anaerobic conditions developed in soils with flooding can enhance the release of soil phosphorus (P) to overlying water, but little information is available for soils with a long history of manure application. We examined the P release from manure-amended soils under simulated snowmelt flooding. Intact monoliths from manured (solid-swine, SSM or liquid swine, LSM) and unamended (control) field plots were collected from Carman, Manitoba. Monoliths were frozen for seven days, then thawed, flooded and incubated...

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...

Data from: Infection sequence alters disease severity—Effects of the sequential exposure of two larval trematodes to Polypedates cruciger tadpoles

Nuwandi U.K. Pathirana, Madhava Meegaskumbura & Rupika S. Rajakaruna
Multiple pathogens co-exist in nature and the sequence in which the host encounters the parasites influences interactions between parasites and host pathology. Here the effects of infection by two larval trematodes, pleurolophocercous cercariae of Acanthostomum burminis and a furcocercous cercariae, on common hourglass tree frog (Polypedates cruciger) was examined. Ten days post-hatch tadpoles (Gosner stage 27/28) were used for infection exposures. First, infection of individuals was carried out by introducing each cercariae type to the...

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: Ecological and environmental predictors of escape among birds on a large tropical island

Kasun B. Ekanayake, Jonathan J. Gnanapragasam, Kithsiri Ranawana, Dulan R. Vidanapathirana, U. Tiran Abeyawardhana, Chandima Fernando, Alexandra McQueen, Michael A. Weston & Matthew R.E. Symonds
Ecological and environmental traits can influence avian escape behaviour but most data underpinning our current understanding relates to continental and temperate areas and species. We conducted a phylogenetically controlled comparative analysis of flight-initation distance (FID) against a variety of environmental, behavioural and life-history attributes for Sri Lankan birds (202 species; n = 2540). As with other studies, body mass was positively associated with FID, and longer FIDs occurred in areas where human population density was...

Land Surface Temperature Volatilities with the Recent Forest Cover Changes in Wilpattu Forest Complex, Sri Lanka

M. M. G. S. Dilini & A. K. Wickramasooriya

Data from: Patterns of nitrogen-fixing tree abundance in forests across Asia and America

Duncan N. L. Menge, Ryan A. Chisholm, Stuart J. Davies, Kamariah Abu Salim, David Allen, Mauricio Alvarez, Norm Bourg, Warren Y. Brockelman, Sarayudh Bunyavejchewin, Nathalie Butt, Min Cao, Wirong Chanthorn, Wei-Chun Chao, Keith Clay, Richard Condit, Susan Cordell, João Batista Da Silva, H. S. Dattaraja, Ana Cristina Segalin De Andrade, Alexandre A. Oliveira, Jan Den Ouden, Michael Drescher, Christine Fletcher, Christian P. Giardina, C. V. Savitri Gunatilleke … & Tak Fung
Symbiotic nitrogen (N)‐fixing trees can provide large quantities of new N to ecosystems, but only if they are sufficiently abundant. The overall abundance and latitudinal abundance distributions of N‐fixing trees are well characterised in the Americas, but less well outside the Americas. Here, we characterised the abundance of N‐fixing trees in a network of forest plots spanning five continents, ~5,000 tree species and ~4 million trees. The majority of the plots (86%) were in America...

Data from: Akaganeite nanorices deposited muscovite mica surfaces as sunlight active green photocatalyst

Anoja Senthilnathan, D.M.S.N. Dissanayake, G.T.D. Chandrakumara, M.M.M.G.P.G. Mantilaka, R.M.G. Rajapakse, H.M.T.G.A. Pitawala & K.M. N. De Silva
Thin-films of akaganeite [FeO(OH)] nanorices deposited muscovite mica (ANPM) surfaces are produced using the facile urea assisted controlled self-assembly technique. The synthesized materials are characterized using scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS), atomic force microscopy, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and thermo gravimetric analysis (TGA). The prepared nanorices on mica surfaces show average particle length and width as 200 nm and 50 nm respectively. Synthesized material acts as...

Data from: Phosphorus release from unamended and gypsum-or biochar-amended soils under simulated spring snowmelt and summer flooding conditions

Darshani Kumaragamage, Randombage Dharmakeerthi, Doug Goltz & Srimathie Indraratne
Prolonged flooding changes the oxidation–reduction status of soils, often enhancing phosphorus (P) release to overlying floodwater. We studied P release from unamended, gypsum-amended and biochar- amended soils under simulated snowmelt flooding (previously frozen, cold flooding at +4°C) and summer flooding (unfrozen, warm flooding at +22°C), using two soils, Fyala clay (FYL-Cl) and Neuenberg sandy loam (NBG-SL) from Manitoba, Canada. Amended and unamended soils were packed into vessels and flooded under cold and warm temperatures in...

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Affiliations

  • University of Peradeniya
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  • Taiwan Forestry Research Institute
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  • Guangxi Institute of Botany
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  • Columbia University
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  • Field Museum of Natural History
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  • National Sun Yat-sen University
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  • National Dong Hwa University
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  • Tunghai University
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  • Morton Arboretum
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  • Forest Research Institute Malaysia
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