A revision of the genus Hydrilla (Hydrocharitaceae)

Cook, Christopher D.K.; Lüönd, Ruth

doi:10.1016/0304-3770(82)90074-2

Cited by 137 publications

(121 citation statements)

References 11 publications

Supporting

Mentioning

118

Contrasting

Unclassified

Order By: Relevance

“…Moreover recent study showed the distinct character of the habitats of the phytocoenoses with H. verticillata in relation to some submerged plant communities of the alliance Potamion [27], especially with regard to waters which were poorer in Na + , K + and Cl − . The data obtained by other authors revealed that H. verticillata had a wide ecological amplitude with respect to properties of water [4,22,28] and the species was very tolerant to organic pollution [29]. The persistence of H. verticillata in north-eastern Poland in dense, often large phytocoenoses and the establishment of new stands of the species may indicate that H. verticillata finds optimal growth conditions in this region of Poland.…”

Section: H Verticillatamentioning

confidence: 86%

Ecology of rare water plant communities in lakes of north-eastern Poland

Jabłońska

Kłosowski

2012

Acta Soc Bot Pol

View full text Add to dashboard Cite

. Their values were lower in waters of the H. verticillata phytocoenoses. The habitats of all the three types of rare phytocoenoses differed considerably from those of N. lutea. The most significant differences were found between the N. lutea and N. pumila phytocoenoses and the smallest differences were between the patches of N. lutea and N. candida. The properties of water were more important in differentiating the habitats of the phytocoenoses studied than the substrate properties. Due to alkalization and increase in water hardness in the lakes studied the stands of N. pumila are among the most threatened. The patches of N. candida and H. verticillata, which occur in waters with a wider range of hardness and tolerating a slight increase in trophy, can still continue to persist in the lakes for a long time.

show abstract

Section: H Verticillatamentioning

confidence: 86%

Ecology of rare water plant communities in lakes of north-eastern Poland

Jabłońska

Kłosowski

2012

Acta Soc Bot Pol

View full text Add to dashboard Cite

show abstract

“…In this study, we investigated the fish assemblages colonizing mono-specific patches of two submerged macrophytes with similar architectures (see details in Cook & Lüönd 1982) (Figure S1 Hydrilla is most likely native to Asia, but is now spread all over the world (Cook & Lüönd 1982 in floodplain lakes, while hydrilla grows prolifically in the main and lateral channels of the river, where colonization by native macrophytes is scarce (Sousa et al 2009;Sousa 2011). In 2009, one of the Paraná lateral channels was colonized simultaneously by egeria and hydrilla.…”

Section: Introductionmentioning

confidence: 99%

Small-sized Fish Assemblages Do not Differ Between a Native and a Recently Established Non-indigenous Macrophyte in a Neotropical Ecosystem

Cunha¹,

Thomaz²,

Evangelista³

et al. 2011

NatCon

View full text Add to dashboard Cite

Hydrilla verticillata recently invaded a protected area in the Upper Paraná River floodplain. In a rare opportunity, when this non-indigenous species co-occurred with the native Egeria najas in a secondary channel of the river, we assessed its effects on assemblage of small-sized fish. Traps were used to catch fish inside macrophyte patches in periods of low and high water. We assessed fish abundance, biomass, diversity, richness and the community composition (using a DCA). The number of fish species did not differ between plants. Fish abundance and biomass were significantly higher during the low water period but plant species did not affect these attributes. Similarly, fish assemblage composition differed only between seasons. Our results indicate that the oscillations in the water level had a greater effect on the small-sized fish assemblage than the presence of the non-indigenous macrophyte. In addition, H. verticillata favors small fish assemblages such as the native does; however, we contend that our conclusions are valid only for habitats scarcely colonized by native plant species. The invasion of other habitats colonized by a high diversity of native species of macrophytes, which are key for small-sized fish, is a matter of concern.

show abstract

“…Cornus sericea L. did not fulfil the criteria of the first question in the prioritisation process 'Is the taxonomic identity of the plant species clearly established' as naturalised plants belong to a complex of hybrids of C. sericea and C. alba (Q-Bank 2016) and thus was included in the Residual List. Similarly, Hydrilla verticillata (L.f.) Royle was included in the Residual List as there is evidence the species is native in the EU (Ireland, Poland and the Baltic states; Cook and Lüönd 1982). Albizia lebbeck (L.) Benth., Clematis terniflora DC., Euonymus japonicus Thunb., Lonicera morrowii A.…”

Section: Stage 1 (Risk Assessment)mentioning

confidence: 99%

“…Although Hydrilla verticillata is often considered non-native to Europe, there is some uncertainty to the status of the species and Lansdown (2013) details the species as native to Belarus, Ireland, the United Kingdom (southern Scotland) and the Russian Federation. There is additional uncertainty of its native status in Latvia and Poland (Cook and Lüönd 1982). In the absence of a pan-global biogeographical molecular study the uncertainty of native populations within Europe will remain (Zhu et al 2015).…”

Section: Euonymus Fortuneimentioning

confidence: 99%

The prioritisation of a short list of alien plants for risk analysis within the framework of the Regulation (EU) No. 1143/2014

Tanner¹,

Branquart²,

Brundu³

et al. 2017

View full text Add to dashboard Cite

Thirty-seven alien plant species, pre-identified by horizon scanning exercises were prioritised for pest risk analysis (PRA) using a modified version of the EPPO Prioritisation Process designed to be compliant with the EU Regulation 1143/2014. In Stage 1, species were categorised into one of four lists -a Residual List, EU List of Minor Concern, EU Observation List and the EU List of Invasive Alien Plants. Only those species included in the latter proceeded to the risk management stage where their priority for PRA was assessed. Due to medium or high spread potential coupled with high impacts twenty-two species were included in the EU List of Invasive Alien Plants and proceeded to Stage 2. Four species (Ambrosia trifida, Egeria densa, Fallopia baldschuanica and Oxalis pes-caprae) were assigned to the EU Observation List due to moderate or low impacts. Albizia lebbeck, Clematis terniflora, Euonymus japonicus, Lonicera morrowii, Prunus campanulata and Rubus rosifolius were assigned to the residual list due to a current lack of information on impacts. Similarly, Cornus sericea and Hydrilla verticillata were assigned to the Residual List RESEARCH ARTICLE Advancing research on alien species and biological invasions A peer-reviewed open-access journal NeoBiotaRob Tanner et al. / NeoBiota 35: 87-118 (2017) 88 due to unclear taxonomy and uncertainty in native status, respectively. Chromolaena odorata, Cryptostegia grandiflora and Sphagneticola trilobata were assigned to the Residual List as it is unlikely they will establish in the Union under current climatic conditions. In the risk management stage, Euonymus fortunei, Ligustrum sinense and Lonicera maackii were considered a low priority for PRA as they do not exhibit invasive tendencies despite being widely cultivated in the EU over several decades. Nineteen species were identified as having a high priority for a PRA

show abstract

A revision of the genus Hydrilla (Hydrocharitaceae)

Cited by 137 publications

References 11 publications

Ecology of rare water plant communities in lakes of north-eastern Poland

Ecology of rare water plant communities in lakes of north-eastern Poland

Small-sized Fish Assemblages Do not Differ Between a Native and a Recently Established Non-indigenous Macrophyte in a Neotropical Ecosystem

The prioritisation of a short list of alien plants for risk analysis within the framework of the Regulation (EU) No. 1143/2014

Contact Info

Product

Resources

About