scholarly journals Sedimented cyanobacterial detritus as a source of nutrient for submerged macrophytes (Vallisneria spiralis and Elodea nuttallii ): An isotope labeling experiment using 15 N

2010 ◽  
Vol 55 (5) ◽  
pp. 1912-1917 ◽  
Author(s):  
Leiyan Zhang ◽  
Kuanyi Li ◽  
Zhengwen Liu ◽  
Jack J. Middelburgd
Keyword(s):  
Isotope Labeling ◽  
Submerged Macrophytes ◽  
Elodea Nuttallii ◽  
Vallisneria Spiralis

scholarly journals Snail communities improve submerged macrophytes growth by graze epiphytic algae and phytoplankton in a mesocosm experiment

2021 ◽  
Author(s):  
Tian Lv ◽  
Xin Guan ◽  
Shufeng Fan ◽  
Chunhua Liu
Keyword(s):  
Native Plants ◽  
Submerged Macrophytes ◽  
Mesocosm Experiment ◽  
Snail Species ◽  
Complex Relationship ◽  
Elodea Nuttallii ◽  
Submerged Plant ◽  
Epiphytic Algae ◽  
Complex Architecture ◽  
The Relationship

The relationship between producers (e.g., macrophyte, phytoplankton and epiphytic algae) and snails plays an important role in maintaining the function and stability of the shallow ecosystems. A complex relationship exists among macrophytes, epiphytic algae, phytoplankton and snails. An outdoor mesocosm experiment with two-way factorials was carried out, three species submerged macrophytes (Hydrilla verticillate, Vallisneria natans or one exotic submerged plant Elodea nuttallii) and two grazing treatments (4 snail species present or absent) to elucidate those relationships. The results showed that the snail communities reducing the biomass of phytoplankton and epiphytic algae indirect then enhanced the growth of the submerged macrophytes. The macrophyte with complex architecture supported more snail and epiphytic algae, and snails preferred to feed on native plants. Competition drove snails change the grazing preferences to achieve coexistence, so that led to the assembling of snail communities towards the direction of highest resource utilization.

scholarly journals The effect of silicate mineral maifanite on the growth of submerged macrophytes Vallisneria spiralis

2020 ◽  
Vol 32 (4) ◽  
pp. 999-1007
Author(s):  
LUO Feng ◽  
◽  
ZHANG Yi ◽  
HAN Fan ◽  
LIU Yunli ◽  
...  
Keyword(s):  
Submerged Macrophytes ◽  
Silicate Mineral ◽  
Vallisneria Spiralis

scholarly journals Adatok a Duna Komárom-Esztergom és Fejér megyei szakaszainak flórájához

Kitaibelia ◽  
2020 ◽  
Vol 25 (2) ◽  
Author(s):  
Norbert Riezing
Keyword(s):  
Elodea Canadensis ◽  
Cyperus Esculentus ◽  
Elodea Nuttallii ◽  
Salvinia Molesta ◽  
Myriophyllum Aquaticum ◽  
Vallisneria Spiralis ◽  
Eleusine Indica ◽  
Hippuris Vulgaris

A cikk elsősorban a Duna árterének vízi és iszapnövényzetével foglalkozik. Az adatok többnyire a 2019-es, tartósan alacsony vízállás mellett végzett felmérések eredményeit tükrözik. A Komárom-Esztergom megyei szakasz iszapnövényzete viszonylag jól kutatottnak számít, míg a Fejér megyei korábban alig volt ismert. A vizinövények közül a Gönyű és Neszmély közötti szakaszról korábban ismert, egyébként is ritka Hippuris vulgaris és Hydrocharis morsus-ranae nem került elő. Megjelent viszont több veszélyes özönnövény, így a Salvinia molesta, Myriophyllum aquaticum, Limnobium laevigatum, valamint a Crassula helmsii, melynek ez az első hazai adata. Hosszú évtizedek után ismét előkerült a Vallisneria spiralis, jelen van az Elodea canadensis, illetve egyre elterjedtebb az Elodea nuttallii és az Azolla taxonok. Az iszapnövényzetben új fajként jelent meg, sőt meglehetősen elterjedt lett a Lindernia procumbens és az adventív Lindernia dubia. Özönnövények közül megjelent a Cyperus esculentus, az Euphorbia maculata és az Eleusine indica. A korábban ismerthez képest jóval elterjedtebb lett a Veronica catenata és a Schoenoplectus triqueter, valamint nagyobb állományai vannak a Cyperus glomeratus-nak. A nyílt kavicsos felszínek érdekes növénye a több lelőhelyen is megtalált Polygonum graminifolium, melynek egészen a közelmúltig nem voltak aktuális hazai adatai.

Effects of maifanite on growth, physiological and phytochemical process of submerged macrophytes Vallisneria spiralis

2020 ◽  
Vol 189 ◽  
pp. 109941 ◽  
Author(s):  
Fan Han ◽  
Yi Zhang ◽  
Zisen Liu ◽  
Chuan Wang ◽  
Ji Luo ◽  
...  
Keyword(s):  
Submerged Macrophytes ◽  
Vallisneria Spiralis

scholarly journals INTER-SPECIFIC COMPETITION BETWEEN TWO SUBMERGED MACROPHYTES, ELODEA NUTTALLII AND HYDRILLA VERTICILLATA

2007 ◽  
Vol 31 (1) ◽  
pp. 83-92 ◽  
Author(s):  
XU Jing-Wei ◽  
◽  
LI Wei ◽  
LIU Gui-Hua ◽  
ZHANG Li-Jing ◽  
...  
Keyword(s):  
Submerged Macrophytes ◽  
Hydrilla Verticillata ◽  
Elodea Nuttallii

Electron probe x-ray microanalysis and electron microscopy of amino acid absorption and transport by the small intestine: inhibition by chemical poisons and correlation to the elemental composition of the epithelial cells

1986 ◽  
Vol 44 ◽  
pp. 134-135
Author(s):  
A. J. Tousimis
Keyword(s):  
Small Intestine ◽  
Amino Acid ◽  
Epithelial Cells ◽  
Elemental Composition ◽  
Isotope Labeling ◽  
Structural Components ◽  
X Ray ◽  
Human Small Intestine ◽  
Transport Studies

The elemental composition of amino acids is similar to that of the major structural components of the epithelial cells of the small intestine and other tissues. Therefore, their subcellular localization and concentration measurements are not possible by x-ray microanalysis. Radioactive isotope labeling: I131-tyrosine, Se75-methionine and S35-methionine have been successfully employed in numerous absorption and transport studies. The latter two have been utilized both in vitro and vivo, with similar results in the hamster and human small intestine. Non-radioactive Selenomethionine, since its absorption/transport behavior is assumed to be the same as that of Se75- methionine and S75-methionine could serve as a compound tracer for this amino acid.

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