Titlebook: Ecology, behaviour and conservation of the charrs, genus Salvelinus; Pierre Magnan,Céline Audet,Eric B. Taylor Book 2002 Springer Science+

Visual-Acuity

举止粗野的人

Developments in the ecology, evolution, and behaviour of the charrs, genus ,: relevance for their maolarctic distribution encompassing many Asian, North American, and European countries and occupy a diversity of aquatic environments, including both marine and freshwater habitats. For instance, the presence of anadromous, stream-resident, and lacustrine life histories within and among species provi

内行

Charrs, glaciations and seasonal ice and for a long period before that, the charrs existed in periglacial environments just beyond the fringes of great ice sheets. The charrs of eastern North America evolved and live in close and intimate association with ice in all its various natural forms. The aquatic environments in which they evo

DALLY

Takvatn through 20 years: long-term effects of an experimental mass removal of Arctic charr, ,, fromcts on the populations of Arctic charr, brown trout, ., and three-spined sticklebacks, .. The littoral catch per unit effort (CPUE) of charr had decreased by 90% in 1990 and then increased to about 50% of the initial level by 1994 while the pelagic CPUE had decreased to zero. Growth in both charr an