130925-studie-wildlife-comeback-in-europe
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Table 3 Major threats that drove the Dalmatian pelican decl<strong>in</strong>e and may still<br />
constra<strong>in</strong> the population [9, 13, 20] .<br />
Threat Description Impact<br />
Natural systems Dra<strong>in</strong>age of wetlands for agriculture and hous<strong>in</strong>g Critical<br />
modifications development.<br />
Human <strong>in</strong>trusions<br />
and disturbance<br />
Persecution/<br />
control<br />
Transportation<br />
and service<br />
corridors<br />
Burn<strong>in</strong>g of reed beds.<br />
Disturbance at breed<strong>in</strong>g and w<strong>in</strong>ter<strong>in</strong>g sites by<br />
birdwatchers, photographers and recreational<br />
and fish<strong>in</strong>g boats.<br />
Destruction of nests by fishermen.<br />
Shoot<strong>in</strong>g.<br />
Collision with and electrocution by power l<strong>in</strong>es,<br />
especially dur<strong>in</strong>g migration and w<strong>in</strong>ter<strong>in</strong>g.<br />
Medium<br />
High<br />
Medium<br />
Medium<br />
High<br />
Pollution Long-term eutrophication of wetlands. Medium<br />
Renewable<br />
energy<br />
Climate change<br />
and severe<br />
weather<br />
Contam<strong>in</strong>ation by heavy metals and pesticides.<br />
Collision with w<strong>in</strong>d turb<strong>in</strong>es.<br />
Drought or flood.<br />
Climate change could have important negative<br />
effects <strong>in</strong> arid and semi-arid regions.<br />
Medium/Low<br />
Potentially high<br />
High<br />
Unknown<br />
logical changes lead<strong>in</strong>g to erosion or flood<strong>in</strong>g of<br />
colonies, and hous<strong>in</strong>g development [13, 21] . For example,<br />
eutrophication drove decl<strong>in</strong>es <strong>in</strong> Dalmatian<br />
pelicans <strong>in</strong> Albania until 2007 [13] . The next most<br />
important threat is disturbance by human activities<br />
and illegal persecution [13, 21] .<br />
Collision with and electrocution by power<br />
l<strong>in</strong>es is also an ongo<strong>in</strong>g threat, particularly dur<strong>in</strong>g<br />
migration and the non-breed<strong>in</strong>g season [13, 21] .There<br />
is an <strong>in</strong>creas<strong>in</strong>g number of w<strong>in</strong>dfarms be<strong>in</strong>g<br />
developed along the ma<strong>in</strong> flyways used by<br />
Dalmatian pelicans and near key wetlands, and<br />
collision with w<strong>in</strong>d turb<strong>in</strong>es could potentially have<br />
a high impact on the species [13, 21] .<br />
Drivers of recovery<br />
Dalmatian pelican recovery <strong>in</strong> Europe is largely the<br />
result of targeted conservation efforts, especially<br />
limit<strong>in</strong>g disturbance by people [13, 22] . However,<br />
overall capacity to carry out management and<br />
enforce protection of colonies is considered to be<br />
low and improvements are necessary [13] . In Greece,<br />
where the European Species Action Plan (SAP) for<br />
Dalmatian pelican has been implemented most<br />
successfully, the breed<strong>in</strong>g population of the species<br />
196