1.   Because nutrition affects reproduction rates, a drop in nut production can also affect birthrates, lowering the number of new cubs.

2.   But in one disturbing new finding, scientists are finding low reproduction rates along one area on the Columbia River in Oregon.

3.   The wandering albatross has no significant natural enemies, and this has enabled it to survive with such a low reproduction rate.

4.   Turkey reproduction rates vary from year to year, depending on the availability of acorns and other wild food, weather and other environmental conditions.

5.   Yet, while evidence of both inbreeding and slow reproduction rates are strong, Kraus stresses that it is speculation to say that inbreeding is causing low reproduction rates.

6.   But with an exponential reproduction rate and no enemies other than angry humans, the frog population in Hawaii has exploded.

7.   Reproduction rates have slowed as small groups of pandas are isolated in shrinking patches of bamboo forest.

8.   Reproduction rates have slowed because pandas are isolated in small groups in shrinking patches of bamboo forest.

9.   The demise of the tiger has been blamed on environmental destruction, hunting and its low reproduction rate.