Analysis of Flora and Vegetation in Rivers: Concepts and Applications

Wiegleb, Gerhard

doi:10.1007/978-94-009-3087-2_10

Cited by 27 publications

(20 citation statements)

References 33 publications

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“…High ecological plasticity of macrophytes (cf. Wiegleb 1978Wiegleb , 1988 was demonstated and most of the associations in this study, particularly from the Potamion and Nymphaeion albae, were also found to colonize mesotrophic waters (Szańkowski & K losowski 1999). These results are not consistent with the findings of Dawson & Szoszkiewicz (1999) and Lukács et al (2009) who found various Potametea vegetation, especially Potamogeton pectinati, in the eutrophic habitats of UK and Hungary.…”

Section: Discussioncontrasting

confidence: 90%

Ecological characteristics of plant species and associations along two Dinaric karstic rivers (Bosnia and Herzegovina, the Balkans)

et al. 2013

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This paper describes the plant communities of two oligotrophic karstic rivers with a slight anthropogenic influence -the Trebižat and the Lištica -in South Bosnia and Herzegovina, their sinecology, and the relationship between vegetation and plant species and environmental parameters. According to 87 relevés, a total of 26 plant associations, using Braun-Blanquet methods, were found in the rivers and nearby surveyed area. Only nine associations were common to both rivers. Eight associations were recorded for the territory of Bosnia and Herzegovina for the first time. Associations from both rivers differed according to following parameters measured at the sampling site: water temperature, distance from the mouth (river kilometers), river width, water depth, flow, pH and slope. There were no differences in nutrient concentrations among the associations. According to Canonical Correspondence Analysis (CCA), three environmental variables out of the 11 initially considered were retained as being related to plant distribution. The first two axes explained 56.8% and 35.2% of variance of species-environment relationship in the Trebižat and Lištica rivers, respectively. Water depth in the Trebižat River, and pH and river kilometers in the Lištica River were found to be the most influential, while nutrients and other physico-chemical parameters were not significant in either river. Water depth vector was identified as an underlying environmental factor determining distribution of Potamogeton lucens and Myriophyllum verticillatum (Potamion), and Nymphaea alba (Nymphaeion albae). According to in situ measurements of light intensity, the highest coefficients of light attenuation, radiance and reflection were found at a station with dense populations of Potamogeton lucens and Nuphar luteum (Potametum lucentis). The vegetation and floristic value of the rivers is discussed as a basis for biodiversity conservation programmes and evaluating the state of these ecosystems in the future.

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Section: Discussioncontrasting

confidence: 90%

Ecological characteristics of plant species and associations along two Dinaric karstic rivers (Bosnia and Herzegovina, the Balkans)

et al. 2013

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“…Beside the factors found to be important in the cluster analysis (ecoregion, water hardness), river size was thought to influence macrophyte species composition and abundance (DAWSON, 1988;WIEGLEB, 1988;POTT and REMY, 2000) to such an extent that large lowland streams in northern Germany (type TN g ), and large montane streams (type M g ) had to be described as additional types. These types are not shown in the cluster analysis, because no reference sites could be found in our study.…”

Section: River Site Typologymentioning

confidence: 98%

“…KOHLER, 1978;WIEGLEB, 1981WIEGLEB, , 1988MELZER, 1988MELZER, , 1999SCHNEIDER and MELZER, 2003), no existing method for assess-ing German rivers using taxonomic composition and abundance of aquatic macrophytes fulfills the demands of the WFD. Existing systems describe ecological conditions (e.g.…”

Section: Introductionmentioning

confidence: 98%

The Reference Index Method for the Macrophyte-BasedAssessment of Rivers - a Contribution to the Implementationof the European Water Framework Directive in Germany

Meilinger¹,

Schneider²,

Melzer³

2005

Internat. Rev. Hydrobiol.

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The European Water Framework Directive requires ecological status classification and monitoring of surface and ground waters using biological indicators. To act as a component of the "Macrophytes and Phytobenthos" biological quality element, as demanded by the Directive, a macrophyte-based assessment system was developed for application in river site types in Germany. Macrophyte abundance data were collected from 262 sites in 202 rivers. Seven biocoenotic river site types were established using differences in characteristic macrophyte communities reflecting ecoregion, channel width, water depth, current velocity, water hardness, and ground water influence. For four of these river site types, a macrophyte assessment system was developed, for the remaining three river site types data were insufficient for developing an assessment system. Ecological status classification of river sites is based on the calculation of a Reference Index value, in some cases supplemented by additional vegetation criteria. The Reference Index quantifies the deviation of species composition and abundance from reference conditions and classifies sites as one of the five possible ecological quality classes specified in the Directive. The assessment of long river stretches with changing river site types along its course is discussed based on an example from the Forstinninger Sempt River, southeast Germany.

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“…Knowledge about the effects of pressures and pressure combinations on macrophyte communities, is one of the key requirements for introducing effective measures to improve the ecological status and sustainable management of riverine ecosystems. (Werle 1982, Wiegleb 1988. Prav tako je porazdelitev makrofitov dinamična, njihova rastišča se lahko krčijo ali širijo v navidezno konstantnih razmerah (Veit in sod.…”

Section: Impacts Of Stressors On Macrophyte Communities and Their Impmentioning

confidence: 99%

“…2006). Naravna raznolikost združb makrofitov različnih rečnih sistemov otežuje primerjavo med različnimi rečnimi tipi (Werle 1982, Wiegleb 1988. Prav tako je porazdelitev makrofitov dinamična, njihova rastišča se lahko krčijo ali širijo v navidezno konstantnih razmerah (Veit in sod.…”

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Vplivi obremenitev na združbe makrofitov in njihov pomen pri upravljanju z rečnimi ekosistemi / Impacts of stressors on macrophyte communities and their importance in river ecosystem management

Knehtl¹,

Germ

2017

Folia Biologica Et Geologica

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IZVLEČEK Vplivi obremenitev na združbe makrofitov in njihov pomen pri upravljanju z rečnimi ekosistemiVse večje zavedanje o ekoloških, gospodarskih in družbenih izgubah, ki so posledica antropogenega spreminjanja vodotokov, je povečalo pritiske za njihovo ohranitev in obnovo. S sprejetjem Vodne direktive smo vpeljali koncept ekološkega stanja voda in s tem ekosistemski pristop njihovega vrednotenja, s ciljem trajnostne rabe vodnih ekosistemov. Ekološko stanje, ki odraža kakovost zgradbe in delovanja vodnih ekosistemov, vrednotimo med drugim tudi na podlagi združb makrofitov, ki so pogosto temeljna skupina mnogih rečnih ekosistemov. Posegi, kot so vnos hranil, spreminjanje hidrološkega režima, gradnja pregrad in nasipov, spreminjanje obrežne vegetacije in izravnavanje struge so le nekatere obremenitve, ki lahko pomembno vplivajo na zgradbo in delovanje združb makrofitov v rekah ter posredno tudi na ostale združbe organizmov in delovanje ekosistema kot celote. Namen tega preglednega članka je povzeti ključne izsledke raziskovalcev, ki ugotavljajo povezave med makrofiti in antropogenimi obremenitvami. Znanje o vplivih posameznih obremenitev in vplivu hkratnega delovanja več obremenitev na združbe makrofitov, je namreč eden ključnih pogojev za pripravo učinkovitih ukrepov za izboljšanje ekološkega stanja in trajnostno upravljanje z rečnimi ekosistemi.Ključne besede: makrofiti, reke, obremenitve, ekološko stanje, vrednotenje, združbe ABSTRACT Impacts of stressors on macrophyte communities and their importance in river ecosystem managementGrowing awareness of the ecological, economic and social losses resulting from anthropogenic modification of rivers has increased pressures for their preservation and restoration. By adopting the Water Framework Directive, we introduced the concept of the ecological status of waters, and the ecosystem approach to their evaluation, with the aim of sustainable use of aquatic ecosystems. Ecological status, which reflects the quality of the structure and functioning of aquatic ecosystems, is also evaluated based on macrophyte communities, which are often a fundamental component of many river ecosystems. Interventions such as nutrient intake, modification of hydrological regimes, dam and dike construction, alteration of riparian vegetation and channel realignment are just some of the pressures, which can significantly affect the structure and functioning of macrophyte communities and indirectly also other organisms as well as ecosystems as a whole. The aim of this review article was to summarize the key findings of studies researching the links between macrophytes and anthropogenic pressures. Knowledge about the effects of pressures and pressure combinations on macrophyte communities, is one of the key requirements for introducing effective measures to improve the ecological status and sustainable management of riverine ecosystems. (Werle 1982, Wiegleb 1988. Prav tako je porazdelitev makrofitov dinamična, njihova rastišča se lahko krčijo ali širijo v navidezno konstantnih razmerah (Veit ...

show abstract

Analysis of Flora and Vegetation in Rivers: Concepts and Applications

Cited by 27 publications

References 33 publications

Ecological characteristics of plant species and associations along two Dinaric karstic rivers (Bosnia and Herzegovina, the Balkans)

Ecological characteristics of plant species and associations along two Dinaric karstic rivers (Bosnia and Herzegovina, the Balkans)

The Reference Index Method for the Macrophyte-BasedAssessment of Rivers - a Contribution to the Implementationof the European Water Framework Directive in Germany

Vplivi obremenitev na združbe makrofitov in njihov pomen pri upravljanju z rečnimi ekosistemi / Impacts of stressors on macrophyte communities and their importance in river ecosystem management

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