Dinku discusses an ongoing program to bring medium-term climate information to a dozen African countries, where weather stations are often unevenly distributed, sparse or even declining in number.
On the other hand, if the original signal is not sufficiently sparse, the performance declines.
But while the threats are many, evidence indicating that monarch populations are in decline is sparse.
Some viewed the devastation as symbolic of the future of this region of expansive beauty and a harsh climate, whose already sparse population had been declining since the 1970s.
Unfortunately, biochemical markers reflecting cognitive decline are still sparse [ 8].
Although historical data on amphipod populations are sparse, their populations seemingly have declined in the upper Midwest, which would indicate a degradation of wetland ecosystem processes in lower trophic levels [7].
Data on objectively measured PA during pregnancy are sparse but indicate that PA declines with gestation [ 6- 8].
However, the data for Northern Ireland are sparse and an acceleration in the decline of mortality in the late 1980s may be concealed within the random variation.
West of the 100th meridian, population density declines and development is sparse, and farms are larger and primarily depend on arid-resistant crops like wheat.
Precipitation significantly declines and vegetation becomes more sparse, with lodgepole pine, white fir, ponderosa pine, and juniper.
There is no obvious trend in catch per day in the Japanese fleet between 1983 and 1988, but catch per tan by the Korean fleet may have declined, although the data are sparse.
