Why are agroecosystems generally more fragile than natural ecosystems?

Why are agro-ecosystems generally more fragile than natural ecosystem? … They are more fragile than natural ecosystems because they are prone to loss of water and nutrients, and they require significant input from these resources, and once that is lost, the whole system could cease production.

How is an agricultural ecosystem different from a natural ecosystem?

Natural ecosystems usually contain hundreds or thousands of species of organisms and are thus very complex in their functioning. In contrast, an agricultural ecosystem (such as a corn field or an orchard) is relatively artificial, being modified and controlled by humans.

How does it differ from natural ecosystem?

A natural ecosystem is the result of interactions between organisms and the environment. … An artificial ecosystem is not self-sustaining, and the ecosystem would perish without human assistance. For example, a farm is an artificial ecosystem that consists of plants and species outside their natural habitat.

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Why agroecosystems and natural ecosystems are mutually exclusive?

In natural ecosystems there tend to be more niches and a higher diversity of species compared to most managed agroecosystems that are simpler, have fewer predatory and parasitic species, and less genetic diversity within a species.

What are the unique features of agroecosystem?

Agroecosystems are characterized by both planned and unplanned diversity. Planned diversity includes the spatial and temporal arrangement of domesticated plants and animals that farmers purposely include in the system, along with beneficial organisms that are deliberately added.

How does agriculture affect ecosystem?

While negative impacts are serious, and can include pollution and degradation of soil, water, and air, agriculture can also positively impact the environment, for instance by trapping greenhouse gases within crops and soils, or mitigating flood risks through the adoption of certain farming practices.

How agricultural systems affect ecosystems?

Agricultural practices have impact on a wide range of ecosystem services, including water quality, pollination, nutrient cycling, soil retention, carbon sequestration, and biodiversity conservation. In turn, ecosystem services affect agricultural productivity.

Why are populations of pests likely to be much larger in agroecosystems?

Populations of pests are likely to be much larger in agroecosystems that they would be in natural ecosystems, because the large monocultures found in agroecosystems create the ideal environment for particular herbivores; the monoculture is a single, large source of food for pests, and also has low biodiversity so there …

What are the differences between species diversity and ecosystem diversity?

Species diversity is all the differences within and between populations of species, as well as between different species. Ecosystem diversity is all the different habitats, biological communities, and ecological processes, as well as variation within individual ecosystems.

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What is the difference between an ecosystem and a sustainable ecosystem?

The ability to maintain ecological processes over long periods of time. Sustainability of an ecosystem is the ability of that ecosystem to maintain its structure and function over time in the face of external stress. SPEAKER’S NOTES: Sustainability is the ability to maintain something over a long period of time.

What do you think is the role of man in an ecosystem and agroecosystem?

The human processes of farming, industrial production and consumption (or use) of commodities are carried out by similar rules as those of the matter and energy flows of the natural ecosystems. … Waste and scrap are generated and disposed of in the environment during the production and consumption of commodities.

What are the different agricultural practices that can strengthen natural ecosystem or agroecosystem?

Sustainable intensification often reduces mechanical and chemical inputs and increases biological diversification of agroecosystems. Examples include the use of diverse crop rotations, cover crops, no-tillage (NT), and the integration of livestock onto cropped lands.

Why hilly region is rich in biodiversity?

Hill region is very rich in biodiversity. Forests of Uttis, Katus and Chilaune are found here. Due to the altitude and topography, different types of plants like Sal, Simal, Peepal, Bar, Sallo, bamboo, etc. … Different sorts of animals and plants are found here due to topography and diverse climate.

How does temperature affect the proliferation of insets in an agro ecosystem?

Warmer temperatures, changes in precipitation, increased drought frequency and higher CO2 concentrations due of climate change will have a devastating effect on abundance of insect pests, which might lead to the emergence of new pests.

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What are the benefits of agroecology?

Agroecology helps to protect, restore and improve agriculture and food systems in the face of climate shocks and stressors. Diverse, well-integrated agroecological systems can promote greater carbon sequestration, increase resilience of livelihoods and provide climate change mitigation and adaptation solutions.

What makes up an agroecosystem?

Agroecosystems, are defined as communities of plants and animals interacting with their physical and chemical environments that have been modified by people to produce food, fibre, fuel and other products for human consumption and processing (Maes, 2018).