vallisneria spiralis
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2022 ◽  
Vol 118 ◽  
pp. 130-139
Author(s):  
Guoliang Bai ◽  
Feng Luo ◽  
Yilingyun Zou ◽  
Yunli Liu ◽  
Rou Wang ◽  
...  

2022 ◽  
Vol 806 ◽  
pp. 150735
Author(s):  
Cai Li ◽  
Shiming Ding ◽  
Musong Chen ◽  
Qin Sun ◽  
Yi Zhang ◽  
...  

2021 ◽  
Vol 175 ◽  
pp. 103445
Author(s):  
Siobhan B. Gorham ◽  
Seifu Seyoum ◽  
Bradley T. Furman ◽  
Kelly M. Darnell ◽  
Laura K. Reynolds ◽  
...  

2021 ◽  
Vol 10 (3) ◽  
pp. 117-121
Author(s):  
Vera Valentinovna Solovieva

The paper describes the habitats of Vallisneria spiralis L., Impatiens glandulifera Royle, Pistia stratiotes L. discovered in recent years within the Samara Region. A brief review of the papers devoted to the migration activity of these plant species on the territory of the Russian Federation and the Volga basin is given. Impatiens glandulifera Royle is an annual hygrophyte. In the flora of the Samara Region it was first noted among local coastal plants in 2004 on one of the ponds of Samara on Mirnaya Street. The plant entered the reservoir from the adjacent garden plots of the private sector. Pistia stratiotes L. is an aquatic plant. In the flora of the Samara Region, a pistia was first found on September 17, 2006 in a city pond (near School № 154 of Samara) among thickets of Elodea canadensis Michx. and Typha latifolia L. growing at a depth of up to 50 cm. Vallisneria spiralis L. was first discovered within the Samara Region in September 2020. Long-term monitoring of the distribution of coastal-aquatic and aquatic macrophytes-migrants in the Middle Volga basin will allow us to more confidently attribute them to possible indicators of global and local climate warming and one of the examples when aquatic plant species move from south to north within the Volga basin.


Hacquetia ◽  
2021 ◽  
Vol 20 (1) ◽  
pp. 7-18
Author(s):  
Anja Rimac ◽  
Antun Alegro ◽  
Vedran Šegota ◽  
Nikola Koletić ◽  
Igor Stanković ◽  
...  

Abstract Eight new localities of the rare, strictly protected macrophyte Vallisneria spiralis have been recorded during a comprehensive survey of water bodies in Croatia. One record is located in the Mediterranean Region, in Butoniga Reservoir, while the remaining records are from the Continental Region, the majority of them situated along the Kupa River. Vallisneria spiralis occurred in slightly basic and alkaline environments and in a wide range of nutrient availability. In Continental localities, the species was present within Myriophyllo-Nupharetum luteae of the alliance Nymphaeion-albae, while in Butoniga, it occurred within the vegetation of the alliance Potamogetonion. Prior to our research, the species was recorded in Croatia only twice, with the older record dating back to the 19th century and the second from recent years, but neither one was confirmed in later surveys. The low number of records of V. spiralis, in spite of a wide-ranging search through hundreds of localities, confirmed the rare status of this species, although the reasons for such limited distribution remain unclear, especially bearing in mind that suitable aquatic habitats are quite widespread in the country.


Kitaibelia ◽  
2020 ◽  
Vol 25 (2) ◽  
Author(s):  
Norbert Riezing

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.


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