Search results for: H.‐U. Dahms

Items from 1 to 11 out of 11 results

article

Socio-ecological studies on a tropical coastal area in southern India

M. S. Gokul, H.-U. Dahms, S. Henciya, T. Dhineshkumar, more

International Journal of Environmental Science and Technology > 2019 > 16 > 5 > 2279-2294

Socioeconomic status versus human health issues were studied during one year among coastal communities of southern India. Hydrochemical (16) and microbial parameters (9) were analyzed, and the results were represented by using correlation coefficient and principal component analysis (PCA). Bacteriological populations were higher in this order TVC > TC > VLO > VC > TS > FC > FS >...

chapter

A Triangle Model: Environmental Changes Affect Biofilms that Affect Larval Settlement

P. Y. Qian, H.-U. Dahms

Springer Series on Biofilms > Marine and Industrial Biofouling > Macrofouling > 315-328

Biofilms are ubiquitous — covering every exposed surface in marine environment and thus playing a key role in mediating biotic interactions and biogeochemical activities occurring on the surfaces. For the propogates of marine organisms, biofilm attributes serve as inhibitive or inductive cues for the attachment of settling larvae and algal spores of potential colonizers. Microbes in biofilms are not...

article

Disease resistance and immune‐relevant gene expression in golden mandarin fish, Siniperca scherzeri Steindachner, infected with infectious spleen and kidney necrosis virus‐like agent

G W Shin, S L White, H U Dahms, H D Jeong, more

Journal of Fish Diseases > 37 > 12 > 1041 - 1054

Infectious spleen and kidney necrosis virus (ISKNV), family Iridoviridae, genus Megalocytivirus, may cause high mortality rates such as those seen in mandarin fish, Siniperca chuatsi. ISKNV has attracted much attention due to the possible environmental threat and economic losses it poses on both cultured and wild populations. We have investigated the pathogenicity of ISKNV‐like agent Megalocytivirus...

article

Decadal changes of phytoplankton chlorophyll-a in the East Sea/Sea of Japan

S. H. Lee, S. Son, H. -U. Dahms, J. W. Park, more

Oceanology > 2014 > 54 > 6 > 771-779

The East Sea has very dynamic environmental conditions with respect to its physical phenomena and biological characteristics. In order to detect any longterm change in patterns of phytoplankton biomass and a longterm trend in phytoplankton spring bloom characteristics in the East Sea, recent decade chlorophyll-a data were obtained for the East Sea from NASA SeaWiFS and MODIS. We found that the average...

article

Effect of the invasive bivalve Mytilopsis sallei on the macrofaunal fouling community and the environment of Yundang Lagoon, Xiamen, China

L.-Z. Cai, J.-S. Hwang, H.-U. Dahms, S.-J. Fu, more

Hydrobiologia > 2014 > 741 > 1 > 101-111

Mytilopsis sallei is a small marine bivalve and is considered as a serious pest. We assume that the invasive bivalve M. sallei changed the community structure of fouling macrofauna and reduced the species diversity index in Yundang Lagoon, Xiamen, China. In order to verify the above hypothesis, test panels were submerged seasonally at five stations during four seasons in Yundang Lagoon, and some...

article

Population genetic patterns of the copepod Calanus sinicus in the northwest Pacific

N. V. Schizas, H.-U. Dahms, M. Ricaurte, J.-S. Hwang

Hydrobiologia > 2014 > 741 > 1 > 153-165

The calanoid copepod Calanus sinicus is present throughout the year in the Bohai Sea, and is transported by the China Coastal Current southwards during winter. The seasonal movement of C. sinicus throughout its distribution should result in the genetic homogenization of the species. We tested the hypothesis of the absence of population structure in C. sinicus by analyzing the nuclear ribosomal region...

article

Nutrient composition of fairy shrimp Streptocephalus sirindhornae nauplii as live food and growth performance of giant freshwater prawn postlarvae

S. Sornsupharp, H.‐U. Dahms, L. Sanoamuang

Aquaculture Nutrition > 19 > 3 > 349 - 359

Nutritional efficacy of fairy shrimp (Streptocephalus sirindhornae) nauplii, as a live food, was studied for growth performance and survival rate of giant freshwater prawn (Macrobrachium rosenbergii) postlarvae. A feeding experiment was designed with four different feeds: dry commercial feed, fairy shrimp nauplii, Artemia sp. nauplii and adult Moina macrocopa. Results from the nutritional composition...

article

Effects of food and light on naupliar swimming behavior of Apocyclops royi and Pseudodiaptomus annandalei (Crustacea, Copepoda)

C.-H. Wu, H.-U. Dahms, S.-H. Cheng, J.-S. Hwang

Hydrobiologia > 2011 > 666 > 1 > 167-178

We examined the effects of food and light on the swimming behavior of nauplii of the cyclopoid Apocyclops royi (Lindberg, 1940) (Copepoda: Cyclopoida) and the calanoid Pseudodiaptomus annandalei Sewell, 1919 (Copepoda: Calanoida). Several behavioral parameters such as swimming patterns, speed, and trajectories exhibited distinct ontogenetic differences between the two species. When algae Isochrysis galbana...

article

Marine Biofilms as Mediators of Colonization by Marine Macroorganisms: Implications for Antifouling and Aquaculture

P.-Y. Qian, S. C. K. Lau, H.-U. Dahms, S. Dobretsov, more

Marine Biotechnology > 2007 > 9 > 4 > 399-410

In the marine environment, biofilms on submerged surfaces can promote or discourage the settlement of invertebrate larvae and macroalgal spores. The settlement-mediating effects of biofilms are believed to involve a variety of biofilm attributes including surface chemistry, micro-topography, and a wide range of microbial products from small-molecule metabolites to high-molecular weight extracellular...

article

The metazoan meiobenthos along a depth gradient in the Arctic Laptev Sea with special attention to nematode communities

J. Vanaverbeke, P.M. Arbizu, H.-U. Dahms, H.K. Schminke

Oceanographic Literature Review > 1998 > 45 > 6 > 991-992

The meiobenthos along a depth transect of oligotrophic sediments in the Arctic Laptev Sea was studied. The meiobenthos followed the general trends reported from other studies: densities decreased with depth in relation to the more limited supply of degradable organic matter at greater depths. Although the sediments along the transect were poor in organic matter in comparison with the NE Atlantic,...

article

The metazoan meiobenthos along a depth gradient in the Arctic Laptev Sea with special attention to nematode communities

Jan Vanaverbeke, Pedro Martinez Arbizu, H.-U. Dahms, Horst K. Schminke

Polar Biology > 1997 > 18 > 6 > 391-401

Abstract The meiobenthos along a depth transect of oligotrophic sediments in the Arctic Laptev Sea was studied. The meiobenthos followed the general trends reported from other studies: densities decreased with depth in relation to the more limited supply of degradable organic matter at greater depths. Although the sediments along the transect were poor in organic matter in comparison with the NE Atlantic,...

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