Showing posts with label definition. Show all posts
Showing posts with label definition. Show all posts

Monday, July 22, 2024

Flora: Mythology, Evolution, and Ecological Importance

The term "flora" in Latin means "Goddess of the Flower," embodying a rich tapestry of symbolism and mythological significance. In Roman mythology, Flora was celebrated as the deity of spring, fertility, love, beauty, and abundance. She was often depicted with roses, which symbolize love and beauty, highlighting her connection to nature's blooming elegance.

Roman mythology, a rich collection of ancient myths and legends, revolved around gods and goddesses believed to control natural forces and human destinies. Among these deities, Flora held a special place, representing the renewal and fertility that spring brings. Her presence in myths underscored the Romans' reverence for the cycles of nature and the beauty inherent in the natural world.

The term "flora" has since evolved to denote the plant life found in a particular region. Initially used in poetry to describe natural vegetation, it later came to refer to works cataloging such vegetation. By the seventeenth century, "flora" also described the flowers of artificial gardens. This evolution highlights how the term expanded from mythological origins to scientific and everyday usage.

Flora is classified based on various factors, with geography being a primary criterion. Plants are categorized by their habitats, such as deserts, aquatic environments, mountainous regions, or specific geographic locations. This classification aids in understanding biodiversity and the distribution of plant species across different ecosystems.

The relationship between flora and fauna is crucial and interdependent. Many animals rely on plants for food, shelter, and survival. Additionally, flora and fauna play vital roles in the oxygen and carbon dioxide cycles. Through photosynthesis, plants convert atmospheric carbon dioxide into oxygen, a process essential for maintaining life on Earth. This symbiotic relationship underscores the importance of conserving both plant and animal life to sustain ecological balance.

In recent times, the significance of flora has gained renewed attention amid global environmental concerns. Protecting plant diversity is recognized as crucial for maintaining ecological stability and supporting human life. Efforts to conserve natural habitats and mitigate climate change reflect an understanding of Flora's ancient legacy and its enduring relevance in the modern world.
Flora: Mythology, Evolution, and Ecological Importance

Wednesday, October 20, 2021

Biome

Biome can be defined as a region of the earth's surface and the particular combination of climate, plants, and animals that are found in it.

Each biome has a unique community of plants and animals. The types of organisms that can live in a biome depend on the biome’s climate and other abiotic, or nonliving, factors.
They are classified according to their specific characteristics: aquatic, grassland, forest, desert, and tundra. The world’s major land biomes include tropical rain forest, tropical dry forest, tropical savanna, freshwater, marine, temperate rainforest, taiga, desert, temperate grassland, temperate woodland and shrubland, temperate forest, northwestern coniferous forest, boreal forest, and tundra.

Each of these biomes is defined by a unique set of abiotic factors – particularly climate – and has a characteristic ecological community.

Biomes change constantly during history since they are damaged because of, for instance, human activities. Therefore, we should continue the preservation and conservation of biomes.

Biomes are frequently used as tools to provide large-scale (regional to global) backgrounds in a range of ecological and biogeographical studies. Among such studies are those addressing global biodiversity conservation efforts, land-use dynamics, fluxes of matter and energy, and climate change.
Biome

Tuesday, September 28, 2021

Ecosystem

The term `eco' refers to a part of the world and `system' refers to the coordinating units. An ecosystem can be visualized as a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment.

The ecosystem represents the basic functional unit of ecology which comprises of the biotic communities mutually related with their nonliving or abiotic environment. Thus, a biotic community and its abiotic environment together represent an ecosystem.

An Ecosystem is a naturally occurring assemblage of life and the environment. The life is referred to the biotic community including the plants, animals and other living organisms. This is denoted as biocoenosis, The environment is the biotope encompassing the physical region of life.

Ecosystems have no particular size. An ecosystem can be as large as a desert or as small as a tree. The major parts of an ecosystem are: water, water temperature, plants, animals, air, light and soil.

All the parts in an ecosystem work together to achieve balance. A healthy ecosystem has lots of species and is less likely to be damaged by human interaction, natural disasters and climate changes.

The term ecosystem first appeared in a publication by the British ecologist Arthur Tansley, during 1935. An ecosystem may be of very different size. It may be a whole forest, as well as a small pond.

From a functional point of view, ecosystem can be divided an ecosystem into two components:
1. Autotrophic component: It consists of green plants which bring about the fixation of solar energy (sunlight) and synthesis of organic compounds (carbohydrates) from simple inorganic substances.

2. Heterotrophic component: It consists of the decomposers (micro-organisms such as bacteria and fungi) which are concerned with the utilization, rearrangement and degradation of complex food substances.
Ecosystem

Tuesday, August 10, 2021

Biodiversity

Biodiversity found on Earth today consists of many millions of distinct biological species, the product of four billion years of evolution.

Diversity refers to the range of variation or variety or differences among some set of attributes; biological diversity thus refers to variety within the living world or among and between living organisms.

It is often understood in terms of the wide variety of plants, animals and microorganisms, the genes they contain and the ecosystem they form.

Biodiversity is literally the diversity of life. From a taxonomical perspective, biologists have identified approximately 1.8 million species on Earth and estimates are that between 80 and 90 percent of the actual total remain undiscovered or unnamed.

The term ‘‘biodiversity’’ was first used in its long version (biological diversity) by Lovejoy (1980) and is most commonly used to describe the number of species.

Usually, three levels of biodiversity are discussed: genetic variation, ecosystem variation, species variation (number of species) within an area, biome or planet. Biodiversity conservation provides substantial benefits to meet immediate human needs, such as clean, consistent water flows, protection from floods and storms and a stable climate.
Biodiversity

Wednesday, July 14, 2021

What is meant by logging?

According to the Oxford English Dictionary, “logging” is “the work of cutting and preparing forest timber.” Most conventional logging is either for pulpwood production, for the manufacture of paper or for saw logs for lumber production.

The standing tree is felled by chainsaw or large -scale machinery, de-limbed and cut into logs of variable length. Ground vehicles are then used to transport (pull, carry or shovel) the logs to the designated loading points where primary processing takes place into various log grades.

Forests managed for long-term wood production are intended to follow logging cycles - also termed rotations – in which trees are harvested and the forest is then left to regenerate for several decades before being relogged. These cycles ostensibly aim to maximize the volume of timber from each harvest without compromising future yields.

The harvesting of timber from cultivated tree plantations only counts as an act of deforestation if the harvest is followed by conversion to another form of land use, and the “scientific” management of natural or native forests is based on the idea that periodic timber harvests are compatible with the maintenance of a permanent forest estate.

The effects of logging on biodiversity are driven by shifts in forest structure and abiotic conditions and by the associated changes in resource availability. Impacts are most immediately following clear-cutting, in which short-term changes strongly favor species tolerant of open habitats.

In case of Illegal and predatory logging, it leads to the depletion of natural resources, which otherwise could be used to generate sustainable socioeconomic development. Instead, perverse economic incentives for extensive ranching and land grabbing have created an unsustainable model of local rural economic development known as boom-bust economy.
What is meant by logging?

Thursday, August 3, 2017

What is woodland?

Woodland is an assemblage of closely planted trees with associations of other plants and animals. They have grown up naturally but may have been extensively managed particularly in the past.

Woods and forests protect soils, retain moisture and store and recycle nutrients. They play a major role in maintaining the world climate, and their destruction releases carbon into the atmosphere causing climate change.
A distinction is made between primary and secondary woodland. Primary woodland is woodland that has been in existence since the last Ice Age, while secondary woodland, is woodland that has grown up in land that originally had some other use. This secondary woodland may be as old as ancient woodland but is known to have grown up over some former land use.

Woodlands are complex ecosystems and not only include obvious organisms such as trees and shrubs but also those living in the soil such as mycorrhizae (root fungi) which cannot be easily be seen.

Many species depend on the specialized conditions found in woodland for example, shade, deadwood, dampness and are therefore unlikely to be found outside this habitat.
What is woodland?

Friday, February 10, 2017

Definition of desert biome

A desert is made of ecosystem. In an ecosystem, plants, animals, land, water and air work together.

A desert is one of many types of biomes on planet earth. A biome is a large area with similar plant life and climate throughout. The major biomes of the world are tundra, grassland, forest, marine, freshwater and desert.
Most of the deserts biome occurs between 10° and 35° latitude (for example the Sahara and Kalahari Deserts), in the interior parts of continents (e.g. Australia, Mongolia and in the rain shadow of young fold mountains as in parts of Peru and Nepal.

In the desert biome, a community of unique plants and animals have adapted to the dry climate. The plants and animals depend on one another. They depend on the land, water and air as well.

Desert plants provide shelter and food for desert animals. Animals help plants by spreading their seeds throughout the desert. But some deserts have such harsh conditions that almost no plants and animals live there.
Definition of desert biome

Saturday, July 9, 2016

Tropical grassland

There are three main types of grassland – tropical, temperate and cold (arctic tundra). Tropical grasslands, excluding wetlands, cover 15 million km2 and in terms of both land area and biomass, are second only to tropical forests.

The largest area of tropical grasslands occurs within Africa. The Sahelian region is a vast area nearly 600 km wide and 6000 km long situated south of the Sahara Desert.

Tropical grasslands have been defined as any ecosystem within the topics in which graminaceous species are a dominant feature of the vegetation. Tropical grassland occur where annual rainfall is higher and more predictably distributed throughout the year than that occurring in deserts, and typically occur between equatorial rain forests and hot deserts.

The tropical grasslands are subject to the influence of strong seasonality with respect to precipitation and at higher latitudes to temperature. The annual evaporation demand exceeds precipitation at most of the sites and occasional long spells of drought are characteristics.

One type of tropical grassland, called a savanna, contains widely scattered clumps of trees such as acacia, which are covered with thorns that keep some herbivores away. This biome usually has warm temperatures year-round and alternating dry and wet seasons.
Tropical grassland

Wednesday, May 18, 2016

Grassland biome

Biome is a large geographic are with distinctive climate and ecosystem. Earth contains hundreds of different kinds of ecosystems.

Most ecologists agree that earth’s land ecosystem can be group into six biomes: desert, grassland, taiga, temperate forests, rainforest and tundra.

Grasses, with large shrubs or trees absent or sparsely distributed dominate grasslands. After the continental ice sheets withdrew at the end of the Pleistocene the climate became warmer and drier, and the grassland increased to their present areas, latterly aided by the deforestation accompanying human activities.

Grassland biomes are places that get enough rain for grasses to grow but not enough to support forests. Temperate grasslands have hot summer as and cold winters.

Depending on the amount of moisture available, grasslands can range from tallgrass to medium grass and shortgrass. Major grassland ecosystems include the North American Great Plains or Prairies, the Eurasian Steppe, the Sahel of Africa, the Pampas of Argentina, the South African Veld and the grasslands of Australia.

Grasslands are important ecosystems because they are frequently used for livestock grazing, they provide important ecosystem services and may serve as carbon sinks.

The two main types are divided on the basis of climate:
*Tropical grasslands or savannas
*Temperate grasslands
Grassland biome

Wednesday, January 30, 2013

Definition of Oasis

Even though deserts contain very little water, people are still able to live in them. That’s because many desert communities are formed near an oasis.

The word oasis is used to describe a small space in the desert that is made fertile by the presence of water. 

Oases are found near a water source where groundwater is sufficiently close to the surface. Water bubbles up through the ground in natural springs, or can easily be reached by wells.

Oases of middle and central Asia, the desert receive water from water-courses originating in the surrounding mountain ranges.

People in desert communities also survive dry seasons by pumping water from sources that are farther away such as reservoir. Even in driest climates, reservoir can produce enough fresh water to build thriving cities. 

The economy of the oases in based on agriculture: dates in the palm groves of the northern Sahara, fruit and early vegetables in the oases of Argentina and cotton in those of Central Asia.

Traditional oases have also introduced handicraft activities.
Definition of Oasis

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