Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Ecological Applications, 21(7), 2011, pp. 26522663 2011 by the Ecological Society of America
 

Summary: Ecological Applications, 21(7), 2011, pp. 26522663
2011 by the Ecological Society of America
The interplay between environmental conditions and Allee effects
during the recovery of stressed zooplankton communities
DEREK K. GRAY
1
AND SHELLEY E. ARNOTT
Department of Biology, Queen's University, Kingston, Ontario K7L 3J9 Canada
Abstract. Many important ecological phenomena depend on the success or failure of
small introduced populations. Several factors are thought to influence the fate of small
populations, including resource and habitat availability, dispersal levels, interspecific
interactions, mate limitation, and demographic stochasticity. Recent field studies suggest that
Allee effects resulting from mate limitation can prevent the reestablishment of sexual
zooplankton species following a disturbance. In this study, we explore the interplay between
Allee effects and local environmental conditions in determining the population growth and
establishment of two acid-sensitive zooplankton species that have been impacted by regional
anthropogenic acidification. We conducted a factorial design field experiment to test the
impact of pH and initial organism densities on the per capita population growth (r) of the
sexual copepod Epischura lacustris and the seasonally parthenogenetic cladoceran Daphnia
mendotae. In addition, we conducted computer simulations using r values obtained from our

  

Source: Arnott, Shelley - Department of Biology, Queen's University (Kingston)

 

Collections: Environmental Sciences and Ecology; Biology and Medicine