ORCID Profile
0000-0001-9289-335X
Current Organisations
Monash University - Caulfield Campus
,
Chang'an University
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Publisher: The Royal Society
Date: 11-05-2016
Abstract: Coral spawning times have been linked to multiple environmental factors however, to what extent these factors act as generalized cues across multiple species and large spatial scales is unknown. We used a unique dataset of coral spawning from 34 reefs in the Indian and Pacific Oceans to test if month of spawning and peak spawning month in assemblages of Acropora spp. can be predicted by sea surface temperature (SST), photosynthetically available radiation, wind speed, current speed, rainfall or sunset time. Contrary to the classic view that high mean SST initiates coral spawning, we found rapid increases in SST to be the best predictor in both cases (month of spawning: R 2 = 0.73, peak: R 2 = 0.62). Our findings suggest that a rapid increase in SST provides the dominant proximate cue for coral mass spawning over large geographical scales. We hypothesize that coral spawning is ultimately timed to ensure optimal fertilization success.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Wiley
Date: 11-11-2019
DOI: 10.1111/EUFM.12246
Publisher: MDPI AG
Date: 25-11-2022
DOI: 10.3390/MICROORGANISMS10122333
Abstract: The identification of microorganisms using single-temperatures pyrolysis gas chromatography (ST-PyGC) has limitations, for ex le, the risk of missing characteristic peaks that are essential to the chemotaxonomic interpretation. In this paper, we proposed a new multi-temperature PyGC (MT-PyGC) method as an alternative to ST-PyGC, without sacrificing its speed and quality. Six bacteria (three Gram-positive and three Gram-negative), one micro-fungus and one archaeon, representing microorganisms from different domains, were analyzed by MT-PyGC. It is found that MT pyrograms cover a more complete range of characteristic peaks than ST. Coupling with thermogravimetric analysis, chemotaxonomic information extracted from pyrograms by MT-PyGC have the potential for the differentiation of microorganisms from environments including deep subterranean reservoirs and biomass conversion/biofuel production.
Publisher: MDPI AG
Date: 06-2023
DOI: 10.20944/PREPRINTS202306.0067.V1
Abstract: Fungal infection of grape berries (Vitis vinifera) by Botrytis cinerea frequently coincides with harvest, impacting both the yield and quality of grape and wine products. A rapid and non-destructive method for identifying B. cinerea infection in grapes at an early stage prior to harvest is critical to manage loss. In this study, zeolitic imidazolate framework-8 (ZIF-8) crystal was applied as an absorbent material for volatile extraction from B. cinerea-infected and healthy grapes in a vineyard followed by thermal desorption gas chromatography-mass spectrometry. The performance of ZIF-8 to absorb and trap targeted volatiles was evaluated with a standard solution of compounds and with a whole bunch of grapes enclosed in a glass container to maintain standard s ling conditions. Results from s ling methods were then correlated to B. cinerea infection in grapes as measured and determined by Genus specific antigen quantification. Trace levels of targeted compounds reported as markers of grape B. cinerea infection were successfully detected with in-field s ling. Peak area counts for volatiles 3-octanone, 1-octen-3-one, 3-octanol, and 1-octen-3-ol extracted using ZIF-8 were significantly higher than values achieved using Tenax®-TA from field testing and demonstrated good correlation with B. cinerea infection severities determined by B. cinerea antigen detection.
Publisher: Springer Science and Business Media LLC
Date: 20-06-2022
Publisher: Wiley
Date: 03-03-2022
DOI: 10.1111/JBFA.12595
Abstract: This study examines the impact of cash‐flow uncertainty on corporate idend payouts and how this impact is shaped by country‐level institutional environments. Employing a large s le of 41,157 firms in 49 economies from 1996 to 2018, we document that cash‐flow uncertainty has a negative impact on idend payouts and that this negative relation is more pronounced in economies with stronger institutions. Our results indicate that strong institutions could facilitate information disclosure, reduce government interventions and promote corporate financing opportunities, thus making firms less subject to agency costs and less motivated to disguise their cash‐flow risk.
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 07-2016
Publisher: Springer Science and Business Media LLC
Date: 06-12-2021
DOI: 10.1038/S41893-021-00817-0
Abstract: Ecosystems worldwide are under increasing threat. We applied a standardized method for assessing the risk of ecosystem collapse, the International Union for Conservation of Nature (IUCN) Red List of Ecosystems, to coral reefs in the Western Indian Ocean (WIO), covering 11,919 km 2 of reef (~5% of the global total). Our approach combined indicators of change in historic ecosystem extent, ecosystem functioning (hard corals, fleshy algae, herbivores and piscivores) and projected sea temperature warming. We show that WIO coral reefs are vulnerable to collapse at the regional level, while in 11 nested ecoregions they range from critically endangered (islands, driven by future warming) to vulnerable (continental coast and northern Seychelles, driven principally by fishing pressure). Responses to avoid coral reef collapse must include ecosystem-based management of reefs and adjacent systems combined with mitigating and adapting to climate change. Our approach can be replicated across coral reefs globally to help countries and other actors meet conservation and sustainability targets set under multiple global conventions—including the Convention on Biological Diversity’s post-2020 global bio ersity framework and the United Nations’ Sustainable Development Goals.
Publisher: Elsevier BV
Date: 06-2017
Publisher: Elsevier BV
Date: 02-2013
Publisher: Wiley
Date: 06-04-2018
DOI: 10.1002/GJ.3202
Publisher: Elsevier BV
Date: 08-2017
Publisher: Wiley
Date: 12-2017
DOI: 10.1002/GJ.3069
Publisher: Wiley
Date: 06-11-2017
DOI: 10.1111/IRFI.12162
Publisher: Wiley
Date: 26-03-2021
DOI: 10.1002/GJ.4121
Abstract: The Lower Cambrian Qiongzhusi shale and the Upper Ordovician–Lower Silurian Wufeng‐Longmaxi shale are major source rocks and important shale gas exploration targets in the Sichuan Basin. Cutting and core s les from two shale gas wells in south‐western Sichuan Basin have been selected for organic matter (OM) reflectance measurement and Raman spectra analysis with the aim to determine maturity. The results were incorporated for basin modelling to construct the thermal evolution of this area. Graptolite fragments and pyrobitumens are the dominant form of OM in Wufeng‐Longmaxi shale. A limited number of the OM as pyrobitumens and vitrinite‐like particles is presented in Qiongzhusi shale. According to the measured reflectance of OM in conjunction with the maturity calculated using Raman spectra, the equivalent vitrinite reflectance (EqVRo) values based on solid bitumen and graptolite is 2.53–2.81% for the Wufeng‐Longmaxi shale. The EqVRo value is 2.85–3.53% within 300 m depth intervals for the Qiongzhusi shale. A significant difference in oil generation occurred before the Late Permian between Qiongzhusi shale and Wufeng‐Longmaxi shale based on basin modelling and reassessment of previous published data. Compared with the Qiongzhusi shale, the Wufeng‐Longmaxi shale would have lower maturities before Late Permian and less hydrocarbon could be generated/expelled at that time, therefore, this shale remained with a large amount of oil, which could crack into gas. This difference had shown a favourable time relationship for generation and accumulation of shale gas in Wufeng‐Longmaxi shale.
Publisher: Wiley
Date: 10-10-2022
DOI: 10.1111/ACFI.13015
Abstract: Employing a large s le of 13,860 firms in 41 economies from 2000 to 2017, we document that the ownership by foreign institutional investors (FIIs) is negatively associated with firms' real earnings management (REM) but unrelated to their accrual earnings management (AEM). We adopt a few identification strategies to tackle the endogeneity issues, including firm‐ and year‐fixed effects regression, two‐stage least squares (2SLS) regression, and difference‐in‐differences (DiD) estimation based on the passage of the Jobs and Growth Tax Relief Reconciliation Act (JGTRRA). In addition, we show that the role of FIIs in curbing REM is achieved through the expertise channel and the monitoring channel . These results suggest that when facing disadvantages in curbing AEM, FIIs make the most of their monitoring strengths by curbing firms' REM, where they have both incentives and capabilities to monitor. Overall, this study highlights the important role of FIIs in monitoring opportunistic managerial behaviour.
Publisher: Wiley
Date: 07-12-2018
DOI: 10.1002/GJ.3064
Publisher: Springer Science and Business Media LLC
Date: 19-04-2018
Publisher: Wiley
Date: 08-06-2022
DOI: 10.1111/CORG.12456
Abstract: This study aims to investigate the role of foreign institutional investors (FIIs) on corporate risk‐taking in an international context. We conjecture that FIIs play a role in encouraging firms to take risks and can substitute country‐level corporate governance in determining corporate risk‐taking. Employing a large s le of 17,698 firms across 42 economies, we show that foreign institutional ownership positively influences corporate risk‐taking. This positive relation is achieved through the monitoring channel and the insurance channel . Furthermore, we show that FIIs substitute country‐level corporate governance in determining corporate risk‐taking, indicating that FIIs play a significant role in promoting risk‐taking in economies with weaker governance. In addition, debtholders view FIIs' risk‐promoting role negatively and use more restrictive covenants to protect themselves. This study provides empirical support for the role of FIIs on corporate investment decisions, thus complementing the existing literature. In addition, our paper documents that country‐level corporate governance and FIIs are substitutes in determining corporate risk‐taking, thus shedding additional light not only on the role of country‐level corporate governance but also on its controversial joint role with FIIs. FIIs from economies with stronger corporate governance are particularly effective at promoting corporate risk‐taking in economies with weaker corporate governance, providing a new channel through which foreign investments can influence economic growth in developing economies. Therefore, policymakers should carefully consider and trade off the costs and benefits of foreign investment when proposing relevant policies.
Publisher: Proceedings of the National Academy of Sciences
Date: 10-05-2021
Abstract: The growth of coral reefs is threatened by the dual stressors of ocean warming and acidification. Despite a wealth of studies assessing the impacts of climate change on in idual taxa, projections of their impacts on coral reef net carbonate production are limited. By projecting impacts across 233 different locations, we demonstrate that the majority of coral reefs will be unable to maintain positive net carbonate production globally by the year 2100 under representative concentration pathways RCP4.5 and 8.5, while even under RCP2.6, coral reefs will suffer reduced accretion rates. Our results provide quantitative projections of how different climate change stressors will influence whole ecosystem carbonate production across coral reefs in all major ocean basins.
Publisher: Wiley
Date: 09-07-2020
DOI: 10.1111/ACFI.12657
Publisher: Elsevier BV
Date: 10-2020
Start Date: 2019
End Date: 2022
Funder: National Natural Science Foundation of China
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