Nom du corpus

Corpus Systématique Animale

Titre du document

Macrophyte-related shifts in the nitrogen and phosphorus contents of the different trophic levels in a biomanipulated shallow lake

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • whole-lake experiment
  • biomanipulation
  • macrophytes
  • nitrogen and phosphorus retention
  • trophic levels
Nom du fichier dans la ressource
Poissons_v2b_003563
Auteur(s)
  • Ellen van Donk 1
  • Ramesh D. Gulati 2
  • Arjen Iedema 1
  • John T. Meulemans 3
Affiliation(s)
  • 1) Department of Nature Conservation, Agricultural University, P.O. Box 8080, 6700 DD, Wageningen, The Netherlands
  • 2) Limnological Institute, ‘Vijverhof’ Laboratory, Rijksstraatweg 6, 3631 AC, Nieuwersluis, The Netherlands
  • 3) AquaSense, P.O. Box 41125, 1009 EC, Amsterdam, The Netherlands
Résumé

Lake Zwemlust, a small highly eutrophic lake, was biomanipulated without reducing the external nutrient loading, and the effects were studied for four years. In this paper we pay special attention to the shifts in relative distribution of nitrogen and phosphorus in the different trophic levels and to the changes in growth limitation of the autotrophs. Despite of the high external nutrient loads to the lake (ca 2.4 g P m?2 y?1 and 9.6 g N m?2 y?1), the effects of biomanipulation on the lake ecosystem were pronounced. Before biomanipulation no submerged vegetation was present in the lake and P and N were stored in the phytoplankton (44% N, 47% P), fish (33% N, 9% P) and in dissolved forms (23% N, 44% P). P and N contents in sediments were not determined. In the spring and summer following the biomanipulation (1987), zooplankton grazing controlled the phytoplankton biomass and about 90% of N and P were present in dissolved form in the water. From 1988 onwards submerged macrophyte stands continue to thrive, reducing the ammonium and nitrate concentrations in the water below detection levels. In July 1989 storage of N and P in the macrophytes reached 86% and 80%, respectively. Elodea nuttallii (Planchon) St.John, the dominant species in 1988 and 1989, acted as sink both for N and P during spring and early summer, withdrawing up to ca 60% of its N and P content from the sediment. At the end of the year only part of the N and P from the decayed macrophytes (ca 30% of N and 60% of P) was recovered in the water phase of the ecosystem (chiefly in dissolved forms). The rest remained in the sediment, although some N may have been released from the lake by denitrification. In summer 1990 only 30% of the N and P was found in the macrophytes (dominant species Ceratophyllum demersum L.), while ca 30% of N and P was again stored in phytoplankton and fish.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
EA3E33377CE873C468E7BF42FA7A630F231A63BE
Revue

Hydrobiologia

Année de publication
1993
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.922
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-B7VR14BX-7
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