Perlindungan buatan diciptakan untuk menyelamatkan reptil dari Doñana , Spanyol--T-REC-komunitas reptil-semarang--KSE-komunitas satwa eksotik

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Perlindungan buatan diciptakan untuk menyelamatkan  reptil dari Doñana , Spanyol

Kecelakaan tambang The aznalcóllar  lebih dari 11 tahun yang lalu , yang mengkontaminasikan  bagian dari Doñana National Park, juga merusak habitat reptil yang ada . Sekarang tim peneliti Spanyol , yang telah mempelajari komunitas reptil sejak tahun 2000 , menunjukkan , dengan mendirikan tempat perlindungan buatan , bahwa hilangnya perlindungan alami memiliki dampak serius pada jumlah  kadal dan ular ....read more

Artificial refuges created to save the
reptiles of Doñana, Spain

Date:

December 2, 2009

Source:

Plataforma SINC

Summary:

The Aznalcóllar mining accident more than 11 years ago, which contaminated
part of the Doñana National Park, also damaged reptile habitat there. Now a
team of Spanish researchers, who have been studying the reptile community since
2000, have shown, by setting up artificial refuges, that the disappearance of
natural refuges had a serious impact on lizard and snake numbers.

.........................

The Aznalcóllar mining
accident more than 11 years ago, which contaminated part of the Doñana National
Park, also damaged reptile habitat there. Now a team of Spanish researchers,
who have been studying the reptile community since 2000, have shown, by setting
up artificial refuges, that the disappearance of natural refuges had a serious
impact on lizard and snake numbers.

Nine years ago, researchers from the University of Granada (UGR) and the
University of Barcelona (UB) started to study the reptile community in the
Doñana ecological corridor. The scientists, who have published the results of
this study in the journal Restoration Ecology, found the population at that
time to be "very impoverished," and were only able to find one of the
13 reptile species present in the surrounding areas -- the European common
gecko (Tarentola mauritanica).

"Despite all the landscape restoration work done after the disaster,
the habitat had lost almost all the natural refuges for land fauna, so we came
up with the theory that this was the reason behind the lack of reptiles,"
said Juan Manuel Pleguezuelos, lead author of the study and a researcher at the
Department of Animal Biology at the UGR.

The team carried out a five-year experiment in order to show the need for
refuges that provide protection against predators, and microclimate conditions.
They created artificial refuges (120 groups of tree trunks) on a 24-hectare
experimental site. They could thus monitor any changes over time in the reptile
community at this site and compare them with another, similarly-sized site
without any such refuges.

Tree trunks, a comfortable home

"The modified area with the artificial refuges showed faster
recuperation of the reptile community in terms of diversity and abundance of species
than the control area that didn't have any artificial refuges," says
Pleguezuelos.

After the new refuges were installed, the reptile community grew from just
one species, the European common gecko, in 2000-2001, to six species in 2006.
It also increased in abundance from one individual per unit effort to more than
five.

The biologists also deduced that colonisation by reptiles of the Guadiamar
Green Corridor was "transversal rather than linear, in other words it
didn't actually act as a corridor for the reptiles, or at least not during the
initial stages of colonisation." According to the researchers, the reptile
populations colonising the Corridor came from areas immediately bordering it,
not from the source areas that the Corridor is supposed to connect, these being
the marshes of the Guadalquivir in the south and the Sierra Morena mountain
range in the north.

"The results suggest that landscape rehabilitation programmes
shouldn't overlook the availability of refuges for wildlife, a vital resource for
Mediterranean reptiles, and something that can be put into place using an
system as inexpensive as waste tree trunks," concludes the biologist.











Story Source:

The above story is based on materials provided
by Plataforma SINC. Note: Materials may be edited
for content and length.







Journal Reference:

1.   
Márquez-Ferrando et al. Recovering the Reptile Community after the
Mine-Tailing Accident of Aznalcóllar (Southwestern Spain). Restoration
Ecology, 2009; 17 (5): 660 DOI: 10.1111/j.1526-100X.2008.00404.x



sumber


http://www.sciencedaily.com/releases/2009/11/091127123917.htm

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