Geoscience Reference
In-Depth Information
Zone
Latitude
90
°
-66°
A
B
66°-23°
C
D
23°-0°
0°-23°
E
23°-66°
F
66°-90°
Fig. 13.2
World map representing LTER networks with research outputs and data included in this
chapter (
colored areas
). The
grey
areas represent LTER networks whose research outputs and data
were not accessible. The
white
areas lack national-scale LTER networks. The geographical (latitu-
dinal) zones are the following:
A
=
Arctic
(> 66° N);
B
=
North Temperate
(66° N - 23° N);
C
=
North Equator
(23° N - 0°);
D
=
South Equator
(0° - 23° S);
E
=
South Temperate
(23°S - 66°S);
F
=
Antarctic
(> 66° S). For countries included in geographical zones A to F see Table
13.1
E
=
South Temperate
(23° S - 66° S), south of the Tropic of Capricorn and north of
the Antarctic Circle
F
=
Antarctic
(>66°S), south of the Antarctic Circle.
For each publication or other research output, the allocation to a geographic zone
was based on latitude of the place-names (when available), or based on country or
biome information if no more specifi c place-name was identifi ed. The list and num-
ber of LTER networks per geographic zones and countries are given in Table
13.1
.
6
The origin of researchers was identifi ed based on the location of the national LTER
network from which the titles of the publications were obtained. For example, a
research output listed by the US LTER concerning Antarctica would be coded as:
Researcher's Origin =
Zone B;
Research Subject
= Zone F.
Regarding which geographic zones are being studied at ILTER sites, the number
of publications of articles and other research outputs excluding meta-data is similar
in the Northern (56.6 %) and the Southern (43.4 %) hemispheres (Table
13.2
).
However, the production of meta-data is markedly concentrated in the Northern
Hemisphere (95.3 %). The ratio of research outputs to meta-data (RO/M-D) is
noticeably contrasting between two hemispheres: In the Northern Hemisphere the
RO/M-D is 38.7 times greater than in the Southern Hemisphere.
7
6
There is no code for a 'global' zone, because among ILTER publications only few papers included
research at a global scale.
7
Caution should be exercised in interpreting this ratio because the generation and use of meta-data
in the production of research outputs is not well characterized within LTER, and because indexed
meta-data may itself refer to other sets of meta-data that have as yet uncharacterized extents.
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