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Monday, July 27, 2020 | History

5 edition of Charophyte colonization in shallow lakes found in the catalog.

Charophyte colonization in shallow lakes

Marcel S. Van den Berg

Charophyte colonization in shallow lakes

processes, ecological effects and implications for lake management

by Marcel S. Van den Berg

  • 28 Want to read
  • 5 Currently reading

Published by RIZA in [The Netherlands .
Written in English

    Places:
  • Netherlands.
    • Subjects:
    • Charophyta -- Colonization -- Netherlands.,
    • Eutrophication -- Control -- Netherlands.,
    • Lake renewal -- Netherlands.

    • Edition Notes

      Statement[Marcel S. van den Berg].
      Classifications
      LC ClassificationsQK569.C483 V25 1999
      The Physical Object
      Pagination138 p. :
      Number of Pages138
      ID Numbers
      Open LibraryOL93983M
      ISBN 109036952379
      LC Control Number99205078
      OCLC/WorldCa42475410

        Charophytes are aquatic, primarily freshwater green plants that are phylogenetically related to early land plants. Certain charophytes produce carbonate biominerals, which aggregate into significant deposits in lakes (Dean, ).Charophyte calcite encrustations are sometimes a major component of lacustrine carbonate deposits worldwide, frequently providing extended and continuous . 1. Introduction. Macrophytes are important components of lake ecosystems, contributing to primary productivity, sediment accumulation and stabilization, storage and cycling of nutrients, as well as providing complex habitat and food for (semi-)aquatic biota from macroinvertebrates to mammals (Jeppesen et al., ).In shallow lakes, they are particularly important as they can contribute to a.

      charophytes (p = ). Similarly, organic, sandy, and mixed sediment types were not shown to exert a significant influence (p = ) on the depth of aquatic plant colonization. Lake bottom slope was not shown to be significantly related (R2 = ; p = ) to the maximum depth of plant growth. alternating charophyte-rich and other aquatic macrophyte-rich facies. Littoral carbonate productivity peaked when suitable shallow platforms were available for charophyte colonization. Clastic deposits in the lake are restricted to lake margins (Units 5 and 6). Diatom productivity peaked during a lowstand period (Unit 1 and Subunit 2a), and was.

      Starry Stonewort colonized lakes Native to Michigan inland lakes Requires high calcium carbonate levels Length positively correlated with high calcium carbonate levels Depth: 2 ft. –8 ft Requires good water clarity Intermingles with Starry Stonewort in shallow water. In inland lakes possessing naturally shallow basins, highly irregular shorelines, shallow bays, gradually sloping basins and/or complex bottom contours, the total area of the basin capable of hosting Starry stonewort and other submerged aquatic plants may approach % (O’Neal & Soulliere, ).


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Charophyte colonization in shallow lakes by Marcel S. Van den Berg Download PDF EPUB FB2

Publication Charophyte colonization in shallow lakes. In the s, shallow littoral areas were dominated by small charophyte species such as Chara aspera, C.

filiformis and C. rudis. Recent mappings indicated a strong decline of this shallow water charophyte community from 42 ha to 3 ha and a shift to the occurrence of macrophyte species typical of eutrophic lakes such as Potamogeton perfoliatus, P. pectinatus and Myriophyllum by: 3. Presence of macrophyte species in transects of the shallow littoral (0–2 m water depth) of Lake Stechlin in, and (whole lake in ).

Species group according to Schaumburg et al. () at 0–1 m depth in lakes from the “TKg13” by: 3. Recent mappings indicated a strong decline of this shallow water charophyte community from ha to 3. ha and a shift to the occurrence of macrophyte species typical of eutrophic lakes such as.

Charophyte colonization in shallow lakes: processes, ecological aspects and implication for lake managements. Thesis Vrije Universiteit Amsterdam. Drukkerij ve&es, Deventer. Google Scholar.

van den Berg, M. S., M. Scheffer, H. Coops & J. Simons, The role of Characean algae in the management of eutrophic shallow by: 9. The book focuses on shallow lakes, but the lucid treatment of plankton dynamics, resuspension, light climate and the role of vegetation is relevant to a much wider range of aquatic systems.

The models that are used remain simple and most analyses are graphical rather than algebraic. The text will therefore appeal to students, scientists and Reviews: 1. The book focuses on shallow lakes, but the lucid treatment of plankton dynamics, resuspension, light climate and the role of vegetation is relevant to a much wider range of aquatic systems.

The models that are used remain simple and most analyses are graphical rather than algebraic. The text will therefore appeal to students, scientists and. In three lakes (Długie, Dmitrowo and Gajlik), the charophyte communities tended to expand under the condition of moderate or high (Lake Długie) PO 4 3-concentration, while dissolved organic matter concentrations were low.

These lakes are also characterized by low values of colour. Charophytes are ecologically important as colonizing pioneer species (Wade, ) because of their rapid dispersal and colonization by oospores (Wade, ) and low sediment requirements (Blindow.

Many modern charophytes live in shallow water, and some ancient charophytes may have also lived in shallow-water habitats subject to occasional drying. About million years ago, during the transition from Ordivician to Silurian, repeated glaciation and climatic changes caused fluctuations in the water levels of lakes and ponds.

The hydrochemical regime and the biota in two lakes of Vooremaa landscape protection area, Central Estonia, were studied in – within the frames of the EC project ECOFRAME aimed to work out water quality criteria for shallow lakes in Europe.

Lake Prossa is a macrophyte-dominated lake with an area of 33 ha and a mean depth of m. Most of the bottom in this lake is covered by a thick. Shallow, turbid lakes benefit from the re-establishment of plants, such as charophytes, which have considerable ecological and management value (van den Berg et al., ).

Charophyte oospores are frequently found in the sediments of de-vegetated lakes, but are sparse compared to the habitats of extant charophytes (de Winton and Clayton, ). Charophytes may grow in silt, mud, peat or sand and they often form a dense carpet, known as a charophyte meadow, which restricts colonization by other macrophytes.

The more common charophyte species do not die down during the winter. They have been recorded growing down to 60 m deep in clear water, but usually prefer depths between 1 and 10 m. Abstract. The submerged vegetation in Veluwemeer (The Netherlands) has shown large changes over the past 30 years.

Potamogeton pectinatus L. remained present in the lake even during the hypertrophie period with total phospohorus (P) levels of about mg P 1 −rmore, the data suggest that there may be one critical level of Secchi depth for the presence of charophytes (about m.

Charophyte germination and establishment from the seed bank of an Australian temporary lake. Charophyte germination and establishment under low irradiance. Clear water associated with a dense Chara vegetation in the shallow and turbid Lake Veluwemeer, The Netherlands.

4 Book 4 Conference contribution 3 Abstract 3 Erratum 1 Book editing 1 Short survey 1 PhD Thesis - Research external Charophyte colonization in shallow lakes. van. Van den Berg, M., Charophyte colonization in shallow lakes; processes, ecological effects and implications for lake management.

Thesis Vrije Universiteit. In shallow lakes, these stands are the main habitat for invertebrates (Van den Berg et al.Casagranda et al.

;Albertoni et al. ), providing microhabitat that favours the. Charophyte algae developed a haplontic life cycle, in which the haploid stage is multicellular and the only diploid stage is the unicellular zygote (Shaw, Szovenyi, & Shaw, ).

The haplodiplontic life cycle, which involves the alternation of multicellular haploid and diploid generations, evolved with the colonization of terrestrial habitats (Fig. Introduction. Shallow lakes are the most abundant freshwater ecosystems on earth (Verpoorter et al., ).In their pristine state, they are often characterized by abundant submerged vegetation which can stabilize clear-water conditions (Scheffer et al., ) and plays a key role in the functioning of the ecosystem (Hilt et al., ).Several mechanisms contribute to a positive feedback.

Charophytes were transplanted inside and outside of the fished 1 ha compartment and their subsequent survival and establishment was monitored.

Despite the extensive fish removal from the 1 ha compartment, repeat transplants inside it did not establish in the long term. Shallow lakes can be defined as more or less permanent standing water bodies that are shallow enough as to, potentially, allow light penetration to the bottom.

They can thus be colonized by higher aquatic plants over the entire basin or at least in large sections (Figure 1), although this is not necessarily the case in all g: Charophyte.Littoral carbonate productivity peaked when suitable shallow platforms were available for charophyte colonization.

Clastic deposits in the lake are restricted to lake margins (Units 5 and 6). Diatom productivity peaked during a lowstand period (Unit 1 and subunit 2a), and was probably favoured by photic conditions affecting larger areas of the.