Criteria for Identifying Territories to be Included in the Eco-Network
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2. CRITERIA FOR IDENTIFYING TERRITORIES TO BE INCLUDED IN THE ECO-NETWORK
Only territories which meet one or several of the following general requirements were selected as natural cores (territories) of the Dnipro Basin eco-network.
1. They are characterized by enhanced or otherwise unique biodiversity;
2. They represent extant natural landscapes of high interregional significance;
3. They represent man-transformed landscapes of interregional cultural and historical importance.
These general requirements are used to establish a set of criteria for identifying natural cores of an eco-network. (Table 2.1)
Table 2.1. Criteria for identifying areas to be designated as natural cores of an interregional eco-network
|
Index |
Criterion |
Compliance with a Criterion |
|
ВЕ |
Bioecological Criteria |
|
|
ВЕ-s |
Sozological |
Protected territories recognized by the Council of Europe and/ or awarded a European diploma |
|
BE-p |
Population |
Areals densely populated by rare, endemic and relict species |
|
BE-c |
Cenosis |
Areals inhabited by biotic communities that are important on a regional scale in terms of their dominants and edificators |
|
BE-r |
Representativeness |
Areals inhabited by flora and fauna that have retained their native or almost native state and are representative of natural zones of the Dnipro Basin |
|
L |
Landscape Criteria |
|
|
L-n |
Naturalness |
Areas with landscapes in their native or almost native state |
|
L-u |
Uniqueness |
Unique landscapes in their native or almost native state |
|
L-d |
Landscape diversity |
Areals characterized by a great number of different and contrasting landscapes |
|
L-r |
Representativeness |
Areals with landscapes in almost native state, which are representative of the Dnipro Basin |
|
L-c |
Cultural significance |
Landscapes of inter-regional historical and cultural significance |
|
Т |
Territorial Criteria |
|
|
Т-a |
Sufficiency of size |
The size of an areal is large enough for its bioecological, landscape and other features to manifest themselves on a basin-wide and / or larger scale. |
|
Т-c |
Territorial integrity |
Areals whose biocenters are linked by means of an environmental corridor network into a single interdependent structure |
In establishing criteria for designating areas as environmental corridors it is assumed that an environmental corridor is intended to serve as a connecting spatial link between biocenters and eco-network natural cores. Therefore, the primary criterion for identifying environmental corridors is a migration criterion, namely, an environmental corridor is one or several areals that may serve as a conduit for an exchange of genetic material and migration between biocenters (regional and natural cores) of an eco-network. This is possible subject to the following conditions:
1. The length of an environmental corridor does not exceed migration distances of most species inhabiting biocenters
2. The width of an environmental corridor enables populations to effectively use it as a migration and expansion (colonization) channel;
3. Edaphic conditions in an environmental corridor are identical or close to those of the biocenters (natural cores) it connects
4. An environmental corridor does not pose migration barriers and is free from other factors impeding migration and expansion of most species.
These conditions are used to establish criteria for identifying areas as environmental corridors (Table 2.2)
Table 2.2.. Criteria for identifying areas as environmental corridors
|
Index |
Criterion |
Compliance with a Criterion |
|
С-d |
Effective length |
The length of an environmental corridor must not exceed migration and expansion distances of population individuals to be protected by means of an eco-network |
|
C-w |
Effective width |
Environmental corridor must be wide enough for populations to expand and migrate through it with sufficient effectiveness |
|
C-e |
Ecotopical |
Edaphic conditions in an environmental corridor must be similar to edaphotopes of the biocenters it connects |
|
C-c |
Territorial continuity |
An environmental corridor may be continuous or discontinuous. In the latter case discontinuities must not prevent the migration of species |
|
С-h |
Hydroecological |
The area and/ or water area of a hydroenvironmental corridor must exhibit rich diversity and allow for the migration of species |



