Catalogus

Zoeken

Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.

Boekenmand

Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).

RSS

Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.

log in

Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]

mandje (0): toevoegen | toon

---

Effects of nutrient enrichment on recruitment of age-0 fathead minnows (Pimephales promelas): potential impacts of environmental change on the Boreal Plains Grant, S.C.H.; Tonn, W.M. (2002). Effects of nutrient enrichment on recruitment of age-0 fathead minnows (Pimephales promelas): potential impacts of environmental change on the Boreal Plains. Can. J. Fish. Aquat. Sci. 59(5): 759-767. https://dx.doi.org/10.1139/F02-054 In: Canadian Journal of Fisheries and Aquatic Sciences = Journal canadien des sciences halieutiques et aquatiques. National Research Council Canada: Ottawa. ISSN 0706-652X; e-ISSN 1205-7533

---

Beschikbaar in	Auteurs
VLIZ [ aanvragen ]

---

Trefwoorden

Canada Environmental impact Eutrophication Population functions > Recruitment Pimephales promelas Rafinesque, 1820 [WoRMS] Canada [Marine Regions]

---

Auteurs		Top
Grant, S.C.H. Tonn, W.M.

---

Abstract

Eutrophication in lakes on the Canadian Boreal Plains is predicted to increase because of climate and land-use changes. The resulting increase in lake productivity might then increase recruitment of young fish via increased food availability, growth, and survival. To assess this hypothesis, we manipulated nutrient concentrations in experimental ponds and examined mechanisms influencing production and survival of age-O fathead minnows (Pimephales promelas). Nutrient enrichment increased phytoplankton biomass (chlorophyll a) sevenfold in treatment compared to reference systems. In response, fish laid more eggs and survival of age-O fish was enhanced, both of which contributed to a more than fivefold increase in total number of age-O fish that survived to the end of the growing season in treatment versus reference systems. A complementary enclosure experiment suggested that enhanced growth and decreased susceptibility to starvation contributes to the greater survival of age-O fish when food resources are increased. Furthermore, overwinter mortality of age-O fathead minnows in experimental ponds was strongly size-selective; no fish smaller than 20 mm survived winter. Because of these effects on egg production and growth and survival of age-O fish, environmental changes predicted for the Boreal Plains could significantly alter the dynamics of fish populations.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs