| Titre |
The BIOTA Biodiversity Observatories in Africa—a standardized framework for large-scale environmental monitoring |
| Auteurs |
JÜRGENS Norbert [1],
SCHMIEDEL Ute [2],
HAARMEYER Daniela H. [3],
DENGLER Jürgen [4],
FINCKH Manfred [5],
GOETZE Dethardt [6],
GRÖNGRÖFT Alexander [6],
HAHN-HADJALI k. [6],
KOULIBALY Annick [6],
LUTHER-MOSEBACH Jona [6],
MUCHE Gerhard [6],
OLDELAND Jens [6],
PETERSEN Andreas [6],
POREMBSKI Stefan [6],
RUTHERFORD Michael C. [6],
Schmidt Marco [6],
SINSIN Brice [6],
STROHBACH Ben J. [6],
THIOMBIANO Adjima [6],
WITTIG Rüdiger [6],
ZIZKA Georg [6],
|
| Journal: |
Environmental Monitoring and Assessment |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0 |
| Volume Journal: |
184 |
| DOI: |
|
| Resume |
The international, interdisciplinary biodiversity
research project BIOTA AFRICA initiated
a standardized biodiversity monitoring
network along climatic gradients across the
African continent. Due to an identified lack of
adequate monitoring designs, BIOTA AFRICA
developed and implemented the standardized BIOTA Biodiversity Observatories, that meet the
following criteria (a) enable long-term monitoring
of biodiversity, potential driving factors, and
relevant indicators with adequate spatial and temporal
resolution, (b) facilitate comparability of
data generated within different ecosystems, (c)
allow integration of many disciplines, (d) allow spatial up-scaling, and (e) be applicable within
a network approach. A BIOTA Observatory encompasses
an area of 1 km2 and is subdivided
into 100 1-ha plots. For meeting the needs of
sampling of different organism groups, the hectare
plot is again subdivided into standardized subplots,
whose sizes follow a geometric series. To
allow for different sampling intensities but at the
same time to characterize the whole square kilometer,
the number of hectare plots to be sampled
depends on the requirements of the respective
discipline. A hierarchical ranking of the hectare
plots ensures that all disciplines monitor as many
hectare plots jointly as possible. The BIOTA Observatory
design assures repeated, multidisciplinary
standardized inventories of biodiversity and
its environmental drivers, including options for
spatial up- and downscaling and different sampling
intensities. BIOTA Observatories have been
installed along climatic and landscape gradients
in Morocco, West Africa, and southern Africa.
In regions with varying land use, several BIOTA
Observatories are situated close to each other to
analyze management effects. |
| Mots clés |
Diversity, global change, permanent plot, sampling scheme, transect , vegetation |
| Pages |
655 - 678 |
| Fichier |
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