scholarly journals Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance

2007 ◽  
Vol 41 (2) ◽  
pp. 231-242 ◽  
Author(s):  
A. Witthöft-Mühlmann ◽  
W. Traunspurger ◽  
K. O. Rothhaupt
Nematology ◽  
2006 ◽  
Vol 8 (4) ◽  
pp. 539-553 ◽  
Author(s):  
André Witthöft-Mühlmann ◽  
Walter Traunspurger ◽  
Karl Otto Rothhaupt

AbstractSix sites within the littoral habitat of Lake Constance in Germany were studied from February 1999 to January 2000 in order to determine the influence of the inflowing River Schussen on local nematode assemblages. The sites were selected to represent a gradient of river influence within the broader river mouth area. The area as a whole was found to be rich in nematode diversity, with 106 nematode species identified. The nematode communities recorded ranged in density from 121 to 165 individuals/10 cm2 and in biomass from 108 to 503 μg wet weight/10 cm2. They were also shown to vary in terms of feeding ecology, with significant differences in the proportions of feeding types occurring among site. Deposit feeders were most abundant, followed by chewers, although the latter dominated in terms of biomass. Epistrate feeders were less common and suction feeders rare. The occurrence of epistrate feeders was linked to the concentration of algal pigment, whereas records of deposit feeders and chewers correlated with bacterial density and organic carbon content. The characters of the different nematode communities in the vicinity of the river mouth were found to reflect the transitional nature of the study area.


2005 ◽  
Vol 163 (3) ◽  
pp. 307-327 ◽  
Author(s):  
A. Witthöft-Mühlmann ◽  
W. Traunspurger ◽  
K. O. Rothhaupt

Author(s):  
Nguyen Ngoc Tien ◽  
Dinh Van Uu ◽  
Nguyen Tho Sao ◽  
Do Huy Cuong ◽  
Nguyen Trung Thanh ◽  
...  

Author(s):  
Andrzej Osadczuk ◽  
Stanisław Musielak ◽  
Ryszard Borówka

Why should the Odra River mouth area not be regarded as an estuary? A geologist's point of viewThe authors find no arguments that would justify application of the term "estuary" to the area of the Odra River discharge into the Baltic Sea. The physiography, geology, and hydrology of the Odra river mouth show that the area possesses many more characteristics typical of flow-through coastal lagoons than those of estuaries. Of key importance in this respect is the Szczecin Lagoon, an extensive, shallow water body separated from the open sea by a barrier intersected by three narrow and long straits. The lagoonal nature of the area is demonstrated also by its geological history.


2006 ◽  
Vol 33 (3) ◽  
pp. 237-248 ◽  
Author(s):  
V. N. Mikhailov ◽  
M. V. Mikhailova ◽  
V. N. Korotaev

Author(s):  
Y. Kurashige ◽  
T. Nakano ◽  
E. Kasubuchi ◽  
M. Maruo ◽  
H. Domitsu

Abstract. The river mouth of Kitagawa Brook is normally stagnant because it is easily closed by sand and gravel transported by littoral currents of Biwa Lake, Japan. A new urban area exists in the basin and sewerage works were constructed in the early 1990s, so contaminated water with a bad odour had flowed into the brook before the sewerage works. To reduce the smell, the river mouth was excavated to narrow the channel in the early 1980s. Thus, river-bed sediment after this excavation only occurs at the river mouth. From the upper 24 cm of a sediment core, we found 19 strata of leaves which were supplied from deciduous trees in autumn. We also found several gravel layers which were supplied from the lake during severe storms. The combination of veins and gravel layers were reconstructed for about 20 years of sediment records with an error of two to three years.


2016 ◽  
Vol 6 (3) ◽  
Author(s):  
Deny Setiady ◽  
Ediar Usman

Majunya garis pantai yang terjadi di sekitar pantai perairan Rembang melingkupi daerah yang luas. Kondisi ini disebabkan morfologi pantai yang sangat landai dan pasokan sedimen yang tinggi terutama di sekitar muara sungai Pasokan sedimen dari sungai yang mengalir ke pantai utara Rembang membentuk endapan sedimen permukaan dasar laut. Sedimen tersebut juga menimbulkan akrasi sepanjang pantai Berdasarkan pemetaan karakteristik pantai perairan Rembang terdiri dari pantai berpasir, pantai berlumpur, pantai berbatu dan terumbu. Akrasi terjadi pada pantai berpasir dan terumbu. Kata Kunci: Majunya garis pantai, Sedimen, Rembang The emerging land in Rembang coastal area is very widely distributed. This is due to a very flat coastal morphology and very high sedimentary supply especially found around river mouth area. Sediment supply from rivers mouthed to north Rembang coast form sea bottom surficial sediment. The sediment is also causing emerging land or accretion along the coastal area of Rembang. Based on coastal characteristics mapping Rembang coastal area consisted of sandy coast, muddy coast, rocky beach and reefy coast. Accretion occurred at sandy beach and reefy coast Keyword: Emerged Land, Sediment, Rembang


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