Species are represented by populations. They occur in nature only through these
populations, which, themselves, are integrated in biocoenoses, in ecosystems
respectively.
Population is the structural and functional element of the two great
supraindividual life units – species and biocoenosis.
Through intra- and interpopulational relations, as well as through their relations
with the abiotic environment, populations participate in production, consumption
and decomposition of biomass and necromass. But, at the same time, through these
relationships, controlled by genetic information system, the existence, perpetuation,
stability and evolution of the species are ensured.
30.3.2 Referring to the Target and the Role of Autecological
Researches
• Autecological research is the result of studies upon populations belonging to
different biocoenosis from different ecosystems;
• Autecological research concerns some populations from different ecosystems of
the same type, but located – geographically and climatically – in different
locations at planetary level, within the areal of respective species and of the
ecosystem type;
• Autecological research will highlight the structural and functional differences
between the investigated populations, the presence of metapopulations (if they
exist), the ecological differences between the subspecies of each eurioic species
etc.;
• Autecological research will be able to explain the passage of the individuals of a
certain species from one population to another, the manner of migrations from
one population to another, the role of invasions, the decline of certain
populations within an ecosystem and their development in a similar ecosystem;
• Autecological research will result in a more complex, a more genuine understanding of the ecological niche of each species;
• Autecological research becomes the study of species adaptations and adequateness to a certain life environment;
• Autecological research must emphasize the adaptations of a population for
improving its ecological niches;
• Autecological research has to become imperative within the studies concerning
the evolutionism. Only it could explain the way(s) of present evolution of
species;
• It is necessary the extension of the series of analytical ecological indexes, then
creation of some synthetic indexes, able to a better processing of indices
proceeded from a lot of populations of respective species;
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populations, which, themselves, are integrated in biocoenoses, in ecosystems
respectively.
Population is the structural and functional element of the two great
supraindividual life units – species and biocoenosis.
Through intra- and interpopulational relations, as well as through their relations
with the abiotic environment, populations participate in production, consumption
and decomposition of biomass and necromass. But, at the same time, through these
relationships, controlled by genetic information system, the existence, perpetuation,
stability and evolution of the species are ensured.
30.3.2 Referring to the Target and the Role of Autecological
Researches
• Autecological research is the result of studies upon populations belonging to
different biocoenosis from different ecosystems;
• Autecological research concerns some populations from different ecosystems of
the same type, but located – geographically and climatically – in different
locations at planetary level, within the areal of respective species and of the
ecosystem type;
• Autecological research will highlight the structural and functional differences
between the investigated populations, the presence of metapopulations (if they
exist), the ecological differences between the subspecies of each eurioic species
etc.;
• Autecological research will be able to explain the passage of the individuals of a
certain species from one population to another, the manner of migrations from
one population to another, the role of invasions, the decline of certain
populations within an ecosystem and their development in a similar ecosystem;
• Autecological research will result in a more complex, a more genuine understanding of the ecological niche of each species;
• Autecological research becomes the study of species adaptations and adequateness to a certain life environment;
• Autecological research must emphasize the adaptations of a population for
improving its ecological niches;
• Autecological research has to become imperative within the studies concerning
the evolutionism. Only it could explain the way(s) of present evolution of
species;
• It is necessary the extension of the series of analytical ecological indexes, then
creation of some synthetic indexes, able to a better processing of indices
proceeded from a lot of populations of respective species;
516
N. Donița ˘ and S. Godeanu