Abonnement à la biblothèque: Guest
Hydrobiological Journal
Rédacteur en chef adjoint: V.I. Yurishinets (open in a new tab)
Secrétaire exécutif du comité de rédaction: L.I. Kalinina (open in a new tab)

Publication de 6  numéros par an

ISSN Imprimer: 0018-8166

ISSN En ligne: 1943-5991

SJR: 0.221 SNIP: 0.469 CiteScore™:: 0.9 H-Index: 12

Indexed in

Change of Limnocalanus macrurus (Copepoda, Calanoida) Population State under High Summer Temperature

Volume 54, Numéro 3, 2018, pp. 24-35
DOI: 10.1615/HydrobJ.v54.i3.30
Get accessGet access

RÉSUMÉ

The many-year data on state of population of the relict copepod Limnocalanus macrurus Sars, 1863 in the Sita Lake (Belarus) were analyzed. Numbers of the copepod sharply decreased after water temperature in the upper water layer exceeded 26°C. Analysis of the vertical distribution of Limnocalanus showed that it avoids water layers with the oxygen deficit and elevated temperature. Growth of the surface temperature and decrease of the oxygen content in the hypolimnion resulted in reducing of the spatial niche and drastic decrease of the Limnocalanus numbers, and thus increased risk of its extinction. Similar mechanism of the numbers decrease and further extinction of the relict planktonic crustaceans probably acts in other lakes with similar morphometric and trophic characteristics.

Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections Prix et politiques d'abonnement Begell House Contactez-nous Language English 中文 Русский Português German French Spain