BookReview: Feesd or feedback: Agriculture, population dynamics and the state of the planet

2004 ◽  
Vol 104 (1) ◽  
pp. 87-87
Author(s):  
Paul Dowding
Keyword(s):  
Population Dynamics ◽  
The State

scholarly journals Population dynamics and biting rhythm of the anthropophilic sandfly Lutzomyia cruciata (Diptera: Psychdidae) in Southeast, Mexico

1996 ◽  
Vol 38 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Eduardo A. Rebollar-Tellez ◽  
Filiberto Reyes-Villanueva ◽  
Ildefonso Fernandez-Salas ◽  
Fernando J. Andrade-Narvaez
Keyword(s):  
Population Dynamics ◽  
High Temperature ◽  
The State ◽  
Endemic Focus ◽  
Host Seeking ◽  
Biting Rate ◽  
Population Peak ◽  
Negative Effect ◽  
Southeast Mexico

Sandflies attracted by human bait were caught in an endemic focus of localized cutaneous leishmaniasis in the state of Campeche, Mexico. Catches were carried out monthly from February 1994 to January 1995 between 18:00 and 22:00 h. Lutzomyia cruciata was the only species caught. The highest population peak of Lu. cruciata was found in March with lesser peaks in February, December 1994, and January 1995. Maximum biting rate of Lu. cruciata was found between 18:00 and 19:00 h. The host-seeking females of Lu. cruciata were directly related to levels of humidity between 88 and 100%. Low and high temperature had a negative effect upon Lu. cruciata activity. The possible role of Lu. cruciata as vector of leishmaniasis in the state of Campeche, Mexico is discussed.

Chinese Demography: The State of the Field

1990 ◽  
Vol 49 (4) ◽  
pp. 807-834 ◽  
Author(s):  
William Lavely ◽  
James Lee ◽  
Wang Feng
Keyword(s):  
Population Dynamics ◽  
Steady State ◽  
Chinese Population ◽  
Human Population ◽  
The State ◽  
Chinese Society ◽  
Demographic Research ◽  
The Past ◽  
Comparative Population ◽  
State Of The Field

As recently as one decade ago, there was no “field” of Chinese demography. There were virtually no demographers of China and little available data. It is fair to say that China was at once the largest and the least known of any human population.The change has been sudden. New sources of data now place China among the better-documented national populations. Publications on Chinese population have boomed. In consequence, we can now speak of a field of Chinese demography, although it is hardly in a steady “state.” We can only outline the explosion of demographic research that is continually expanding and refining our understanding of Chinese population today and in the past. This outpouring of data and knowledge provides unprecedented opportunities for the study of Chinese society and offers unusual challenges to our understanding of comparative population dynamics.

Kyrgyzstan

2017 ◽  
pp. 404-426
Author(s):  
Mehmet Yüce
Keyword(s):  
Foreign Policy ◽  
Population Dynamics ◽  
Economic Cooperation ◽  
The State ◽  
Ethnic Composition ◽  
Kyrgyz Republic ◽  
Social Infrastructure ◽  
The West ◽  
The Us ◽  
Education Culture

Kyrgyzstan is very rich and striking with its ethnic composition. After the collapse of USSR, the changes in social infrastructure and the differentiation in the ideological premises of the state have led to a dramatic change in the population dynamics of the country. Now, the Kyrgyzstan Republic is a democratic and secular state. Ethnic structure, border security, long border with China are important issues of Kyrgyzstan, which, in its foreign policy, has drawn a profile that is open to the west, avoids conflicts with its neighbors, pursues a balanced policy in its relations with the US, Russia and China. Turkey is also an important partner of Kyrgyzstan; between Turkey and the Kyrgyz Republic, over 100 agreements and cooperation documents were signed in the fields of education, culture, trade and economic cooperation, transport, communication, military and other areas.

The Queensland Rock-wallabies - An Overview of Their Conservation Status, Threats and Management.

1996 ◽  
Vol 19 (2) ◽  
pp. 169
Author(s):  
T.F. Clancy ◽  
R.L. Close
Keyword(s):  
Population Dynamics ◽  
Species Diversity ◽  
Conservation Management ◽  
Conservation Status ◽  
The State ◽  
Individual Species ◽  
Habitat Requirements ◽  
Species Ranges ◽  
Census Techniques ◽  
Threatening Processes

Recent investigations of the taxonomic relationships of Petrogale in Queensland have led to the recognition of eleven distinct taxa within the State, representing some two thirds of the species diversity of this group. The assessed conservation status of the various species ranges from those considered to be vulnerable to extinction, through species that are locally rare, to those currently considered to be common. The specialised habitat requirements of the group presents challenges to the conservation management of individual species. Further research is required into census techniques, population dynamics, genetic processes and the impacts of purported threatening processes to assist in the conservation management of this diverse and unique macropod group.

scholarly journals Population dynamics and evaluation of the partial selective treatment of crossbreed steers naturally infested with Rhipicephalus (Boophilus) microplus in a herd from the state of Minas Gerais in Brazil

2016 ◽  
Vol 220 ◽  
pp. 72-76 ◽  
Author(s):  
Lucas Vinicius Costa Gomes ◽  
Welber Daniel Zanetti Lopes ◽  
Weslen Fabricio Pires Teixeira ◽  
Willian Giquelin Maciel ◽  
Breno Cayeiro Cruz ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Minas Gerais ◽  
The State ◽  
Boophilus Microplus ◽  
Selective Treatment

scholarly journals POPULATION DYNAMICS OF THE MAIN PELAGIC SPECIES EXPLOITED IN THE JAVA SEA: STOCK EVALUATION

2017 ◽  
Vol 12 (1) ◽  
pp. 65
Author(s):  
Bambang Sadhotomo
Keyword(s):  
Population Dynamics ◽  
The State ◽  
Purse Seine ◽  
Pelagic Species ◽  
Composition Data ◽  
Main Species ◽  
Java Sea

This study was based on length composition data collected from purse seine fleets operating in the Java Sea, and aimed to elaborate the state ofthe stock of the main species.

scholarly journals Inventory of managed honey bee population in Zhytomyr region (Ukraine)

2020 ◽  
Vol 10 (1) ◽  
pp. 123-137
Author(s):  
O. V. Lisohurska ◽  
D. V. Lisohurska ◽  
V. M. Sokolyuk ◽  
S. V. Furman ◽  
M. M. Kryvyi ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Food Security ◽  
Apis Mellifera ◽  
Honey Bee ◽  
The State ◽  
Quarter Century ◽  
The Past ◽  
The World ◽  
Pasture Area ◽  
Bee Colonies

Over the last decades, the number of honey bee colonies in the world has been declining. A honey bee is the most important pollinator in agriculture. According to estimates, such a situation can threaten the food security of humanity. The purpose was to investigate the specific aspects of the managed honey bee population in Zhytomyr region. The population dynamics, number, and density were determined. For this purpose the statistics of the State Statistics Committee of Ukraine on the number of bee colonies by categories of producers in Ukraine and Zhytomyr region were used. It was established that in Zhytomyr region over the past quarter century, the population of honey bee (Apis mellifera L.) has increased by 2 times up to 193.4 thousand colonies. During the same period, the number of bee colonies in Ukraine has increased by 1.4 times. At present, Zhytomyr region is a leader in the state in the development of the beekeeping industry. Eight percent of all honey bee colonies in the country are concentrated here. In the Zhytomyr region, the density of honey bee population is one of the highest in Ukraine. 82 colonies are concentrated here on one conditional pasture area (1256 hectares), with 7 colonies per 100 hectares of land. In Ukraine, these indicators are 52 and 4 respectively. The distribution of bee colonies in the region is uneven. The vast majority of colonies (58.5%) are concentrated in the Polissia. There are from 1 to 18 colonies per 100 hectares of land in each of the units in the region, on the conditional pasture area from 16 to 224. The results of these studies are relevant for the commodity apiaries for the rational use of honey flow and to make a well-considered decision on the prospect of increasing the number of bee colonies. Further work will be aimed at the investigation into the melliferous base and the calculation of the feed balance of the beekeeping industry in Zhytomyr region.

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