The term carnivore is used in a variety of ways. The general ecological definition of a carnivore is an organism that feeds on animals, as opposed to feeding...
Cuban moist forestsLast Updated on 2013-12-05 19:18:08The Cuban moist forests originally held exceptionally distinctive insular flora and fauna, with many species, genera and families unique to its forests in the form of relict taxons. The island’s long-standing isolation has made it possible for these relict taxons to speciate, and many unique groups have also diversified. Many of the old lines that survive in these forests are extinct on the nearby continents. The rich flora and diverse fauna should be pointed out, particularly land snails. At present, these forests are mostly destroyed and fragmented. Expansion in the production of cacao, coffee and tobacco as well as mining and other human activities represent a serious threat in some areas.
Originally, this ecoregion was distributed in multiple patches of different sizes along the ranges and highlands of the island of Cuba (located between 19º50’N to... More »
Limitations of marketsLast Updated on 2013-11-18 08:49:39
There are a number of ways in which economic theory affects both the study and the practice of business. Economic theories may be offered to explain how businesses operate; students and teachers of business generally ignore some of the less realistic portions of these explanations, while making use of the more practical aspects. Economic theories are also used as justification for government policies that regulate or otherwise affect business.
There is an especially relevant part of economic theory that describes how socially optimal results can come about through perfect markets that allocate resources according to society’s most preferred uses. This theory is important because it is the theoretic underpinning for policies and prescriptions that have significantly shaped the modern world. Recommendations to reduce trade restrictions; to privatize utilities, prisons, or water... More »
Fenugreek Last Updated on 2013-11-11 14:11:46
(Source: Saikat Basu, own work)
Species: Trigonella foenum-graecum
Binomial name: Trigonella foenum-graecum L.
Fenugreek (Trigonella) is the oldest medicinal plant in the world. Most popular species of this genus is Trigonella foenum-graecum, where the term “foenum-graecum” means ‘Greek hay’ pointing to its use as a forage crop in the past, fenugreek is grown mainly as a spice crop in the recent times. The plant is believed to be native to the Mediterranean region1-6. There are several controversies regarding the origin of the fenugreek plant for which no proper theory as to the... More »
Admiralty Islands lowland rainforestsLast Updated on 2013-11-05 14:31:57The Admiralty Islands Lowland rainforests contain several endemic species, yet the biodiversity of these islands is still poorly known. Intensive commercial logging and conversion of forests to agriculture are the greatest threats to the ecoregion.
The Admiralty Islands are located slightly north of Papua New Guinea (PNG) in the southwest Pacific Ocean and are often grouped together with New Britain and New Ireland to make up the Bismarck Archipelago. The Admiralty Islands form the political unit of Manus Province, PNG. Manus Province is the smallest province of PNG in both land area and population (32,713). The temperature of the Admiralty Islands varies little throughout the year, reaching daily highs of 30-32° Celsius and 20-24°C at night. Average annual rainfall is 3382 millimeters (mm) and is somewhat seasonal, with June through August being the wettest... More »
Leeward Islands dry forestsLast Updated on 2013-11-01 11:42:24The Leeward Islands dry forests ecoregion is comprised of a number of forest patches on some islands in the Caribbean’s Leeward Island group. This neotropical ecoregion measures less than fifty square miles in extent. Due to the diminutive geographic areal size and to the proximity of densely human populated coastal regions, these dry forests are particularly prone to degradation and disturbance.
Millennia of deforestation and intensive agricultural use have resulted in the alteration of much of the original forest cover and contributed to a subsequent loss of species richness. A relatively high degree of island-endemism is a characteristic that these dry forests share with many other forests in the Leeward Islands group. Ecological conservation measures vary significantly from one island to another, while most units suffer similarly from population-related development,... More »
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