I keep seeing that and asking for some links to read about the alternatives.
This one mostly in references the elephants at Kruger National park, but hits many of the major points.
http://www.bornfree.org.uk/fileadmi...et_al_2006._Ele_round_table_sajsci_102_9_.pdf
Conclusions:
1.The previously maintained ceiling of
around 7000 elephants in the KNP
should not be construed as a carrying
capacity.
2. Manipulating elephant numbers alone
may have ramifying consequences.
3. Big trees have declined in the KNP
despite past capping of elephant
numbers.
4. There is no benchmark against which
to judge an ideal vegetation state for
the KNP.
5. Claimed disaster scenarios from elsewhere
have been greatly exaggerated.
6. Plant species losses have been documented
in the Addo Elephant National
Park and are a cause for concern.
7. Concepts of a balance of nature are
outmoded.
8. Establishing a heterogeneous spatial
template is more effective than continually
counteracting change.
9. Density feedbacks must ultimately
curtail the growth in the elephant
population.
10. Further research needs to be focused
most crucially on factors governing
elephant movements and recruitment
processes in savanna woodlands.
Suggested responses:
1. Since there is no easy solution, different
measures need to be applied and
tested through adaptive management.
2. Management should be spatially differentiated,
and may involve zoning
some areas as ‘elephant sanctuaries’
and others as ‘tree sanctuaries’ with
clearly specified objectives.
3. Further research is needed to establish
how elephants distribute their effects
over space and the local conditions
allowing tree regeneration to occur.
4. Reliable models of interactive ecosystem
dynamics are required to project
when threshold conditions of irreversibility
are being approached.
5. Interventions may be needed to counteract
likely lags in the elephant–woodland
interaction, but with the need for
action lessening as the size of the
protected area gets larger.
6. It would be more effective, less costly
and less contentious to establish a
spatial template in order to restrict the
extent of severe elephant impacts on
vegetation, than continually to cull
elephants.
7. Socio-political issues seem of more
immediate concern than ecological
ones, at least in the KNP.
8. The case for active intervention is
stronger in smaller reserves, but other
measures could reduce the need for
culling.
9. Management interventions need to be
backed by sufficiently informative
monitoring of the consequences.
Effects of social disruption in elephants persist decades after culling.
Effects of social disruption in elephants persist decades after culling