Titlebook: Liming of Acidified Surface Waters; A Swedish Synthesis Lennart Henrikson,Y. W. Brodin Book 1995 Springer-Verlag Berlin Heidelberg 1995 Aci

特别容易碎

The effects of liming on aquatic fauna, the observed changes in fauna vary depending on how much time has elapsed since treatment. For species with short life cycles, such changes occur relatively rapidly. Communities continue to develop over long periods after liming; in some cases for at least fifteen years..Post-liming changes in faun

BAIT

The impact of liming on aquatic communities,reat extent determined by biotic factors such as competition and predation within the new post-liming abiotic limits which emerge..Despite the fact that, in most cases, the flora and fauna in limed lakes and watercourses resemble those which are to be found in unacidified waters, most surveys sugges

gerontocracy

,Liming strategies and effects: the Lake Västra Skälsjön case study,luded in a fish sampling programme for limed lakes (Nyberg . 1986) and since 1989 it has been included in the national ISEL (Integrated Studies of the Effects of Liming) programme (Appelberg and Aldén 1992). In conjunction with fish sampling, water (Nyberg unpubl.), phytoplankton (data: E. Hörnström

ferment

Debility

Supplementary measures to aquatic liming,imination of migration obstacles. Measures of this sort may be called for when it is quite clear that re-establishment will not occur under its own impetus or when earlier occurring numbers of species and individuals cannot be achieved within a reasonable time span (10–15 years) after the initial tr

修饰语

Socio-economic consequences of aquatic liming, bird-watching) which also result from liming are therefore not included. Despite this, the study shows that five of the projects could be considered profitable, one broke even and three were probably unprofitable..The conclusion is that Swedish liming activities are an essential and profitable inve

Noctambulant

亲爱

专横

剧毒