Because wetlands are often transition zones (ecotones) between terrestrial and deepwater aquatic systems, many processes have major implications for species. Since wetlands may provide food and habitat for many terrestrial and many aquatic species, wetland biodiversity is often higher than that of adjacent ecosystems.

Are wetlands ecotones?

1990). At the land- scape level, wetlands are themselves ecotones between aquatic and terrestrial systems. Their position in land- scape depressions makes them the receptors of water- borne materials from upslope, often to the benefit of downstream water quality (Chan et al.

Why wetlands are highly productive?

Wetlands are unique, productive ecosystems where terrestrial and aquatic habitats meet. Wetlands play a critical role in maintaining many natural cycles and supporting a wide range of biodiversity. ... They serve as a natural sponge against flooding and drought, protect our coastlines and help fight climate change.

What are ecotones give an example?

An ecotone is an area that acts as a boundary or a transition between two ecosystems. ... Examples of ecotones include marshlands (between dry and wet ecosystems), mangrove forests (between terrestrial and marine ecosystems), grasslands (between desert and forest), and estuaries (between saltwater and freshwater).

What are the ecological functions of wetlands?

Wetlands are multi-functional; they provide services, such as water purification and regulation of water flows, fishery and other resources for human and non-human uses, habitats for plants, animals and micro-organisms and opportunities for recreation and tourism.

Why Wetlands are Nature's Super-Systems | WWT

41 related questions found

What do you mean by wetland ecosystem?

A wetland is an area of land that is either covered with water or saturated with water. Unique plants, called hydrophytes, define wetland ecosystems. ... A wetland is an area of land that is either covered by water or saturated with water. The water is often groundwater, seeping up from an aquifer or spring.

What is the economic importance of wetlands in an ecosystem?

Wetlands filter and clean water, which decreases the costs of drinking water treatment, and they reduce the frequency and intensity of floods. They support the life cycle of 75% of the fish and shellfish commercially harvested in the U.S., and up to 90% of the recreational fish catch.

What is meant by ecotones?

Ecotones are areas of steep transition between ecological communities, ecosystems, and/or ecological regions along an environmental or other gradient. Ecotones occur at multiple spatial scales and range from natural ecotones between ecosystems and biomes to human-generated boundaries.

Why is biodiversity higher in ecotones?

At the biome scale, richness increases at ecotones because the limits of the ranges of two region's species reach into the transition.

What is Ecocline in geography?

Definition. noun, plural: ecoclines. A sequence of inter-ranking structure formed within a group between two distinct environments wherein the border line takes gradual and dynamic changes nurturing varied stable communities in a geographical area.

Why do wetlands have high net primary productivity?

Net primary production (NPP) is highest in wetlands receiving nutrient enrichment or with high nutrient turnover. The degree, duration, and periodicity of flooding affect wetland productivity more than rainfall or temperature. Drainage can promote enhanced productivity by increasing nutrient mineralization.

What is high primary productivity?

The primary productivity of an ecosystem is defined as the speed at which the solar energy is turned into an organic substance by chlorophyll in the photosynthesis. ... A high primary productivity rate in the ecosystems is obtained when the physical factors (for instance: water, nutrients and climate) are favourable.

Which is the most productive ecosystem?

Mangrove Forest Ecosystems

These forests grow in tropical and subtropical climates along the coastlines. Mangrove forests are among the most productive ecosystems on the planet.

Why do wetlands have high biodiversity?

Wetlands have been called “biological super systems” because they produce great volumes of food that support a remarkable level of biodiversity. In terms of number and variety of species supported, they are as rich as rainforests and coral reefs.

Why are ecotones fragile?

... One is decreased the other is unaffected 0 -Ecotones are stochastic, unstable ecological zones [13] characterised by instability due to the sensitivity to environmental changes [14] and the reaction between the adjacent zones [6].

What is meant by niche in biology?

In ecology, the term “niche” describes the role an organism plays in a community. A species' niche encompasses both the physical and environmental conditions it requires (like temperature or terrain) and the interactions it has with other species (like predation or competition).

Where do ecotones occur?

Ecotones occur at edges and physical boundaries, where fresh water meets salt water and water meets land, where tides roll up and down coasts, where woodlands become pastures and the fir trees of taiga forests give way to the lichen and grass of tundra.

Why is hilly region considered ecotone?

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, salla, bamboo, etc. ... Different sorts of animals and plants are found here due to topography and diverse climate.

How do ecotones influence edge effect?

Edge effect refers to the changes in population or community structures that occur at the boundary of two habitats (ecotone). Sometimes the number of species and the population density of some of the species in the ecotone is much greater than either community. This is called edge effect.

Why do ecotones have so many more species than other areas?

An ecotonal area often has a higher density of organisms of one species and a greater number of species than are found in either flanking community. Some organisms need a transitional area for activities such as courtship, nesting, or foraging for food.

What is the difference between Ecotone and Ecocline?

An ecocline refers to the gradient change of physicochemical characteristics between two ecosystems, while an ecotone is a designated new zone created in combination between two homogenous ecosystems.

What is the definition of biodiversity in science?

More in Center for Biodiversity & Conservation. The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.

What is wetlands economic value?

Key Message: A global economic assessment of 63 million hectares of wetlands estimated their value at $3.4 billion per year. Wetlands play a significant role in delivering ecosystem services globally. The highest benefits are found in Asia with an economic value of $1.8 billion per year.

What are economic services of wetlands?

Improved water quality, flood control, wildlife and fisheries habitat, and recreational opportunities are just a few economic benefits that wetlands provide. Wetlands are an important, yet often overlooked, resource. Keeping them healthy is critical to maintain clean water and to support wildlife and fish populations.

How do wetlands make money?

Landowners may also earn money by leasing their wetlands to hunters. ... By storing water, wetlands recharge local groundwater supplies. And by cycling nutrients through the ecosystem, wetlands encourage plant growth.