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Seaglider observations revealed striking interleaving layers in the Kuroshio east of Taiwan

Seaglider observations revealed striking interleaving layers in the Kuroshio east of Taiwan

The underwater glider, a kind of unmanned underwater vehicle, has been used for ocean observations for more than ten years. It was not until 2015 the Ministry of Science

 
Resource availability affects temporal variation of phytoplankton size spectral slopes in the Kuroshio east of Taiwan

Resource availability affects temporal variation of phytoplankton size spectral slopes in the Kuroshio east of Taiwan

Fan-Sian Lin, Pei-Chi Ho & Chih-hao Hsieh Institute of Oceanography, National Taiwan University A study in the Kuroshio east of Taiwan led by master student Fan-Sian Lan, Dr. Pei-Chi Ho, Profs. Chih-hao Hsieh and Sen Jan at National Taiwan University, shows that the temporal variation of phytoplankton size spectral slops [...]

 
Acknowledging differences: number, characteristics, and distribution of marine benthic communities along Taiwan coast

Acknowledging differences: number, characteristics, and distribution of marine benthic communities along Taiwan coast

Our knowledge of the ability of coral reefs to face contemporary challenges disregards the wide variety of benthic communities (BCs) that could be associated with contrasted dynamics when facing stressors.

 
Exploration of the mesophotic coral ecosystems in Taiwan

Exploration of the mesophotic coral ecosystems in Taiwan

With the perspectives of using underwater robots to characterize mesophotic coral ecosystems in Taiwan, we are just back from our first field test of IONTU’s BlueROV2 (Blue Robotics Inc.) at Green Island (Ludao, Taiwan). Despite tough conditions at sea, we smoothly deployed our ROV down to -60 meters while analyzing [...]

 
Characterization of dissolved arsenics in the South China Sea

Characterization of dissolved arsenics in the South China Sea

Arsenic (As) is an extremely toxic element. But, this element has chemical similarity to that of Phosphorus, which P is an essential nutrient for all organisms. Indeed, arsenic in the ocean can be absorbed by microbes and then transferred to higher trophic

 
The Common Weak Biases of Pacific North Equatorial Countercurrent in Ocean Models Are Revealed

The Common Weak Biases of Pacific North Equatorial Countercurrent in Ocean Models Are Revealed

The Pacific North Equatorial Countercurrent (NECC) is a major upper-ocean zonal flow of the wind-driven circulation in the tropical Pacific, flowing eastward across the Pacific Ocean basin between 2°N and 10°N. The NECC transport is about 10-30 Sv eastward out of the warm pool region to the relatively cold eastern [...]

 
“Haste makes waste” in the evolution of typhoons

“Haste makes waste” in the evolution of typhoons

Two functional-improved data buoys, assembled and deployed by a research and technical team at National Taiwan University (NTU), survived from fierce wind and sea state of Super Typhoon Nepartak (Category 5) in the western North Pacific, and successfully recorded crucial air and sea variables within a few kilometers from the [...]

 
Steep redox gradient and biogeochemical cycling driven by deeply sourced fluids and gases in a terrestrial mud volcano

Steep redox gradient and biogeochemical cycling driven by deeply sourced fluids and gases in a terrestrial mud volcano

Pei-Ling Wang Microbial in subsurface environments would have exerted a profound impact on the cycling of carbon, nitrogen,

 
Species diversity of marine bacterioplankton communities is predictable due to macro-evolutionary constraints

Species diversity of marine bacterioplankton communities is predictable due to macro-evolutionary constraints

Hsiao-Pei Lu & Chih-hao Hsieh Institute of Oceanography, National Taiwan University A study in the East China Sea, led by Dr. Hsiao-Pei Lu and Prof. Chih-hao Hsieh, shows for the first time that diversity of marine bacteria community is strongly affected by macro-evolutionary constraints. This study is published (January, 2019) [...]

 
Biogeography of functional trait diversity in the Taiwanese reef fish fauna

Biogeography of functional trait diversity in the Taiwanese reef fish fauna

In Taiwan, the number of reef fish species decrease with latitude because of the changes in environmental conditions around the island. In this study published in January 2019 in Ecology and Evolution, a research team led by Dr. Vianney DENIS from the Institute of Oceanography (National Taiwan University) has investigated [...]

 
Formation and preservation of authigenic pyrite in the methane dominated environment

Formation and preservation of authigenic pyrite in the methane dominated environment

Dr. Lan-Feng Fan and Prof. Saulwood Lin from the Institute of Oceanography, explore authigenic pyrite formation and preservation in the methane dominated Environment.  This study,

 
Experiences gained from the 2018 IONTU-TUMSAT students exchange in Tokyo, Japan

Experiences gained from the 2018 IONTU-TUMSAT students exchange in Tokyo, Japan

Ching-Wei Wang and Chao-Yuan Yang The students exchange activity between IONTU and TUMSAT has been held for four years at both IONTU and TUMSAT. Under this mutual activity, we thank Professors Sen Jan, Yi-Jay Chang, Huei-Ting (Tina) Lin, and Vianney Denis for recommending us to visit TUMSAT in October 2018. [...]

 
Institute of Oceanography, National Taiwan University (IONTU) – Atmosphere and Ocean Research Institute, University of Tokyo (AORI) bilateral workshop

Institute of Oceanography, National Taiwan University (IONTU) – Atmosphere and Ocean Research Institute, University of Tokyo (AORI) bilateral workshop

IONTU-AORI bilateral workshop entitled “Northwestern Pacific Ocean Dynamics” was held on Dec 12-13, 2018. A total of 8 scientists (including a Ph.D student and a postdoc) from AORI were invited to IONTU. Accommodating four themes- Physical Oceanography, Marine Geology and Biogeography, Marine Biogeochemistry, and  Marine Biodiversity and Ecology, 14 oral [...]

 
Establishment of a novel genus for a marine bacterium recovered from the lagoon of Dongsha Island, Taiwan

Establishment of a novel genus for a marine bacterium recovered from the lagoon of Dongsha Island, Taiwan

More than forty isolates of marine, facultatively anaerobic, fermentative bacteria were recovered from sediment samples collected from the lagoon of Dongsha Island, Taiwan, using an anaerobic enrichment culture method. Two of the isolates were selected for characterization and classification in the present study.

 
Molecular assessment of Pocillopora verrucosa (Scleractinia; Pocilloporidae) distribution along a depth gradient in Ludao, Taiwan

Molecular assessment of Pocillopora verrucosa (Scleractinia; Pocilloporidae) distribution along a depth gradient in Ludao, Taiwan

Scleractinian corals identification is mainly based on their skeletal characteristics. However, skeletal features can vary

 
Numerical study and observation reveal dynamics for island wakes in the Kuroshio

Numerical study and observation reveal dynamics for island wakes in the Kuroshio

The wake features in the lee of Green Island off southeast of Taiwan are frequently observed by satellite images (Figure 1)

 
Spatial variation in the morphological traits of Pocillopora verrucosa along a depth gradient in Taiwan

Spatial variation in the morphological traits of Pocillopora verrucosa along a depth gradient in Taiwan

Coral taxonomy typically derives from descriptions of skeletal micro- and macrostructures, however, these characteristics may be altered

 
A small-scaled study provides insight into how fish adapt to future environmental changes

A small-scaled study provides insight into how fish adapt to future environmental changes

Hui-Yu Wang Climate change and anthropogenic effects have caused pronounced changes in physical habitats and biological functions for

 
Pelagic larval duration, growth rate, and population genetic structure ofthe tidepool snake moray Uropterygius micropterus around the southern Ryukyu Islands, Taiwan, and the central Philippines

Pelagic larval duration, growth rate, and population genetic structure ofthe tidepool snake moray Uropterygius micropterus around the southern Ryukyu Islands, Taiwan, and the central Philippines

Wen-Chien Huang  Jen-Chieh Shiao A study by graduate student Wen-Chien Huang and professors Jen-Chieh Shiao and Te-Yu Liao evaluated the effect of pelagic larval duration of demersal fishes on the population genetic structure

 
Fishing, rather than temperature, has the most prominent effect on size structure of exploited fish populations

Fishing, rather than temperature, has the most prominent effect on size structure of exploited fish populations

Chen-Yi Tu and Chih-hao Hsieh Institute of Oceanography, National Taiwan University A study by graduate students Chen-Yi Tu, Kuang-Ting Chen and Professor Chih-hao Hsieh, found that fishing has the most prominent effect

 
Predator and prey biodiversity relationship and its consequences on marine ecosystem functioning—Interplay between nanoflagellates and bacterioplankton

Predator and prey biodiversity relationship and its consequences on marine ecosystem functioning—Interplay between nanoflagellates and bacterioplankton

Jinny Yang and Chih-hao Hsieh Institute of Oceanography, National Taiwan University Understanding the biodiversity effects across trophic levels via predator-prey interactions is

 
D indices: novel biodiversity indices to disentangle food web complexity through network unfolding theory

D indices: novel biodiversity indices to disentangle food web complexity through network unfolding theory

The research project in Japan lead by the scientists in Research Institute for Humanity and Nature, Ryukoku University

 
Scientist of National Taiwan University leading the team with scientists in Japan won 18th Ecological Research Paper Award & 6th Taiwan-Japan Ecology Workshop will be organized in Tainan 2018

Scientist of National Taiwan University leading the team with scientists in Japan won 18th Ecological Research Paper Award & 6th Taiwan-Japan Ecology Workshop will be organized in Tainan 2018

Fei-Tsui Reservoir (FTR) and the simulated seasonal variations of depth profile of methane oxidizing bacteria (MOB).

 
Scientist of National Taiwan University joining with an international team develops a new method to examine the link between the time-varying interaction network and community stability in natural systems

Scientist of National Taiwan University joining with an international team develops a new method to examine the link between the time-varying interaction network and community stability in natural systems

Professor Chih-hao Hsieh from the Institute of Oceanography and Ph.D. student Chun-Wei Chang from Academia Sinica, together with an international research team

 
The Kuroshio research of Prof. Ming-Huei Chang is selected as the cover page of Deep-Sea Research

The Kuroshio research of Prof. Ming-Huei Chang is selected as the cover page of Deep-Sea Research

Prof. Ming-Huei Chang (in the photo below) reveals the physical processes underlying the Kuroshio meandering and transport variability east of Taiwan using an unprecedented 2-year field observational dataset

 
Elemental cycling in terrestrial mud volcanoes is affected by microbial communities and metabolic characteristics

Elemental cycling in terrestrial mud volcanoes is affected by microbial communities and metabolic characteristics

Methane is one of the most potent greenhouse gases in Earth’s atmosphere. It traps 28 times more heat per mass unit than carbon dioxide over a 100-year period.

 
Benthic community affects global carbon turnover on the seafloor

Benthic community affects global carbon turnover on the seafloor

Benthic fauna actively redistributes particles, water, and solutes in the sediment, contributing to the spatial and temporal heterogeneity of oxic, anoxic, and oscillatory redox zones. 

 
Marine bacterial and protist communities are differentially influenced by species sorting and dispersal limitation

Marine bacterial and protist communities are differentially influenced by species sorting and dispersal limitation

Wenxue Wu and Chih-hao Hsieh Institute of Oceanography, National Taiwan University Bacterial and protist communities are the two key components in marine microbial food webs. Even though they are both microbes, these two groups can be geographically structured in distinct manners due to their differences in organismal traits. For example, [...]

 
Observations in the context of numerical modeling examine the dynamics underlying eddy-Kuroshio interactions

Observations in the context of numerical modeling examine the dynamics underlying eddy-Kuroshio interactions

Mesoscale eddies are everywhere in the ocean. These ocean swirls of either clockwise or counterclockwise spinning with diameter of about 100-300 km

 
The warm blob in the northeastern Pacific-the bridge leading to the 2015/16 El Niño

The warm blob in the northeastern Pacific-the bridge leading to the 2015/16 El Niño

Late in 2013 the sea became anomalously warm in the Gulf of Alaska. Known as the “warm blob”, these unusual conditions in the eastern North Pacific persisted for two years. At its peak, sea surface temperatures were 2.5 degrees higher than average (3-4 degrees in some specific regions). Down in [...]

 
A new functional approach investigating the role of coral assemblages based on colonies’ morphology

A new functional approach investigating the role of coral assemblages based on colonies’ morphology

Coral morphological groups and their richness have traditionally been used to compare functional compositions of coral assemblages because these groups play an important role in ecosystem processes and coral reef resilience. However, thus far, studies on this topic have remained descriptive and qualitative which are inadequate to describe changes affecting [...]

 
Dissolved and Colloidal Arsenic in the Western Philippine Sea

Dissolved and Colloidal Arsenic in the Western Philippine Sea

Arsenic (As) is an environmental toxicant and a major global concern in the world ocean. There are different chemical species for this element (arsenate, arsenite and methylated arsenic) in aquatic environments

 

PO speech announcement 01/05(Thu) Marine Biological-Physical Coupled Modeling: Applications and Challenges. Dr. Rubao Ji (Associate Scientist, Biology Department/WHOI)

 

CO speech announcement  12/27 (Tue)  13:20  Determination of Nickel, Copper and Zinc Isotopes in seawater and its application.  Dr. Shotaro Takano (Dept. Chemistry, Kyoto University)

 

PO speech announcement  11/24 (Thu)  14:20 Deconvolution of the Labrador Sea Transit-Time Distribution from Combined Measurements of CFC-11 and CFC-12.  謝佩媛 (加州大學爾灣分校地球系統科學博士)

 

Web Conferencing Service

Web Conferencing Service Please go to this link to start a new web meeting: http://meeting.ntu.edu.tw/ Instruction Portal: http://ccnet.ntu.edu.tw/adobe_connect/index.html Instructions: 1) Desktop and Laptop: http://ccnet.ntu.edu.tw/adobe_connect/desktop.html 2) Tablet and Smart Phone: http://ccnet.ntu.edu.tw/adobe_connect/tablet.html Video Tutorial: http://ccnet.ntu.edu.tw/adobe_connect/video.html Please contact Computer and Information Networking Center if you have any questions. Tel: (02)3366-5006~5012 E-mail: net@ntu.edu.tw

 
2015 International Conference on Ecology, Environment & Energy (3E): Pursuing a Low Carbon Sustainable Homeland

2015 International Conference on Ecology, Environment & Energy (3E): Pursuing a Low Carbon Sustainable Homeland

(http://erc.ntu.edu.tw/2015seminar)。

 

IONTU speech announcement  3/27 (Fri)  10:00  The Emerging Informatics in Oceanography.  Dr. Charles Sun (Center for Coasts, Oceans, and Geophysics, NOAA)

Speaker:Charles Sun (Center for Coasts, Oceans, and Geophysics, NOAA) Title:The Emerging Informatics in Oceanography Time:3/27 (Fri) 10:00-11:30 Location:Room 216 of IONTU

 

PO speech announcement 3/26 (Thu) 14:20 Reviews of Nonlinear Internal Wave in the South China Sea. Prof. Ren-Chieh Lien (Applied Physics Laboratory, University of Washington)

Speaker:Prof. Ren-Chieh Lien (Applied Physics Laboratory, University of Washington) Title:Reviews of Nonlinear Internal Wave in the South China Sea Time:3/26 (Thu) 14:20-15:30 Location:Room 232 of IONTU

 

IONTU speech announcement  3/27 (Fri)  15:10  Dissolved organic carbon biogeochemistry: From the submarine basaltic aquifer to marginal seas.  Dr. Tina Huei-Ting Lin (School of Ocean and Earth Science and Technology(SOEST), University of Hawaii)

Speaker:Dr. Tina Huei-Ting Lin (School of Ocean and Earth Science and Technology(SOEST), University of Hawaii) Title:Dissolved organic carbon biogeochemistry: From the submarine basaltic aquifer to marginal seas Time:3/27 (Fri) 15:10 Location:2nd floor large lecture hall of IONTU     Preview Marine dissolved organic carbon (DOC) is a large fixed carbon [...]

 

IONTU speech announcement  3/25 (Wed)  10:30  Completing the puzzle: stock assessment for sustainable fisheries.  Dr. Yi-Jay Chang (NOAA Pacific Islands Fisheries Science Center)

Speaker:Dr. Yi-Jay Chang (NOAA Pacific Islands Fisheries Science Center) Title:Completing the puzzle: stock assessment for sustainable fisheries. Time:3/25 (Wed) 10:30-12:00 Location:2nd floor large lecture hall of IONTU (Lunch with candidate:12:00, Room 106 of IONTU)     Biographical Summary Yi-Jay Chang is a Fishery Scientist currently employed within the Stock Assessment [...]

 

IONTU speech announcement  3/19 (Thu)  10:20  Cenozoic plate reconstructions of East Asia: new subducted slab constraints from seismic tomography.  Dr. Jonny Wu (postdoc of Department of Geosciences, National Taiwan University)

Speaker:Dr. Jonny Wu (postdoc of Department of Geosciences, National Taiwan University) Title:Cenozoic plate reconstructions of East Asia: new subducted slab constraints from seismic tomography Time:3/19(Thu)10:20 – 12:00 Location:2nd floor large lecture hall of IONTU

 

PO speech announcement  3/12 (Thu)  14:20  Geoacoustic properties and sound propagation effects of the sand dunes on the northeastern slope of the South China Sea.  Prof. Ching-Sang Chiu (Department of Oceanography, Naval Postgraduate School)

Speaker:Prof. Ching-Sang Chiu (Department of Oceanography, Naval Postgraduate School) Title:Geoacoustic properties and sound propagation effects of the sand dunes on the northeastern slope of the South China Sea Time:3/12 (Thu) 14:20 – 15:20 Location:Room 232 of IONTU

 

IONTU speech announcement  3/6 (Fri)  15:30  Dynamics of the gas hydrate system off Svalbard.  Prof. Christian Berndt (Head of the Research Unit Marine Geodynamics, GEOMAR, Germany.)

Speaker:Prof. Christian Berndt (Head of the Research Unit Marine Geodynamics, GEOMAR, Germany.)                  Speaker’s personal website:http://www.geomar.de/en/mitarbeiter/fb4/gdy/cberndt/ Title:Dynamics of the gas hydrate system off Svalbard. Time:3/6 (Fri) 15:30~17:00 Location:2nd floor large lecture hall of IONTU

 

PO speech announcement  3/5 (Thu)  14:20  A new method to estimate surface currents from CODAR.  Prof. Joe Wang (IONTU)

Speaker:Prof. Joe Wang (IONTU) Title:A new method to estimate surface currents from CODAR. Time:3/5 (Thu) 14:20 Location:Room 232 of IONTU

 
<!--:tw-->Lake warming and water level manipulation drive out rare species of phytoplankton, revitalizing debates on community structure<!--:-->

Lake warming and water level manipulation drive out rare species of phytoplankton, revitalizing debates on community structure

Aspecies-rich ecological community is composed of few abundant species and a large number of rare species. This universal phenomenon,known as species abundance distribution (SAD), hasintrigued a century of research to understand the underlying mechanism for a general law of community, yet remains controversial.In past, most of studies have treated SAD [...]

 
<!--:tw-->Discrimination of Seismic Rupture Model for the 2011 Tohoku-Oki Earthquake Using Tsunami Simulation<!--:-->

Discrimination of Seismic Rupture Model for the 2011 Tohoku-Oki Earthquake Using Tsunami Simulation

Abstract Developing realistic, three-dimensional ruptures corresponding to a regional plate convergence is difficult to accomplish directly through band-limited ground-motion observations. A potential indirect method for this evaluation is to use a tsunami simulation to verify the rupture model reversely because the initial conditions of the associated tsunamis are caused by [...]

 

Professor Char-Shine Liu – the most recent issue of the Fire in the Ice Newsletter

After completing his studies in geophysics at Taiwan’s National Central University, Char-Shine Liu discovered the next chapter of his life in a book about the early days of the Deep Sea Drilling Program (DSDP). “I read 200,000,000 Years Beneath The Sea By Peter Briggs,“ he recalls. “I became excited by [...]

 
<!--:tw-->Monitoring the offshore earthquakes around Taiwan <!--:-->

Monitoring the offshore earthquakes around Taiwan

[Chang, T.Y.] Locating at the conjoint plate boundaries of the Philippine Sea and the Eurasian plates, Taiwan Island and its vicinity experience all the time a sever seismic activity. We benefit from the NSC marine instrumental center installed in the IO to develop Ocean Bottom Seismometer (OBS, now in series [...]

 
<!--:tw-->The TAIGER (Taiwan Integrated GEodynamic Research) project<!--:-->

The TAIGER (Taiwan Integrated GEodynamic Research) project

The TAIGER (Taiwan Integrated GEodynamic Research) project is a large Taiwan-US cooperative research project participated also by scientists from France, Japan and Philippine. This project uses seismic techniques to image the crustal and upper mantle structures of the Taiwan mountain belt and its surrounding seas for the purposes of understanding [...]