African Population Estimates, 1850-1960

New estimates of land productivity in Belgium, 1750-1850.

Some observations concerning the increase of hospital provision in London between 1850 and 1960.

INTRODUCTION It is a truism that the present is contained by the past. The institutions with which we grapple in planning for tomorrow are the result of forces which were at work yesterday and the day before, and we must understand the past in order to make proper provision for the future. Nowhere does the hand of history lay more heavily than in hospital plannmg. For most of the hospitals in o...

Improved estimates of ocean heat content from 1960 to 2015

Earth's energy imbalance (EEI) drives the ongoing global warming and can best be assessed across the historical record (that is, since 1960) from ocean heat content (OHC) changes. An accurate assessment of OHC is a challenge, mainly because of insufficient and irregular data coverage. We provide updated OHC estimates with the goal of minimizing associated sampling error. We performed a subsampl...

Aerial survey intensity as a determinant of estimates of African elephant population sizes and trends

Population estimates based on strip transect aerial surveys of large herbivores can aid management decisions if estimates are accurate and precise. Because sampling intensities may influence precision, we simulated survey intensities to determine which could yield accurate and precise population estimates and detect population changes for several African elephant (Loxodonta africana) population...

Population Trends of Southern Resident Killer Whales from 1960-1999

In the mid 1960’s, prior to live-capture collections for oceanariums, it is believed that about 100 individuals comprised the Southern Resident community of killer whales. A decline in population levels occurred as a result of collections for public display through the early 1970’s (Hoyt 1990), decreasing the number of whales to about 70 individuals. Beginning in 1974, the Southern Resident com...