Are freshwater ecosystems diverse?
Freshwater ecosystems are abundant and diverse throughout the circumpolar region and include lakes, ponds, rivers, streams and a wide range of wetland complexes (Usher et al.
Why are freshwater ecosystems so different from each other?
Freshwater ecosystems are driven by physical habitat, energy sources, water quality biotic interactions, hydrology and connectivity. Variations in these factors result in significantly different environments, including upland streams and rivers, large lakes, floodplain rivers and wetlands, and xeric freshwaters.
Why are freshwater ecosystems unique?
Freshwater ecosystems including rivers and their floodplains, lakes, and wetlands have undergone more dramatic changes than any other type of ecosystem due to a combination of human activities including drainage for agriculture, abstraction of water for irrigation, industrial and household use, the input of nutrients …
What causes diversity in ecosystems?
Broadly speaking, the diversity of an ecosystem is dependent on the physical characteristics of the environment, the diversity of species present, and the interactions that the species have with each other and with the environment.
What is freshwater diversity?
“freshwater biodiversity”, at the species level, includes life which is very obviously living in freshwater but also includes life which is adapted to live in or around freshwater habitats.
How does freshwater affect biodiversity?
Freshwater species are important to local ecosystems, provide sources of food and income to humans and are key to flood and erosion control. … Almost one-third of freshwater biodiversity face extinction, largely due to habitat loss, introduction of alien species, pollution, and over-harvesting.
What is diversity and biodiversity?
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 main features of freshwater ecosystem?
The freshwater ecosystems are those whose environment is liquid water, very low content in salts. In these ecosystems we find places such as rivers, lakes, wetlands, swamps, jungles and flood plains. They are very rich in biodiversity and important for the planet’s climate.
What are the characteristics of freshwater ecosystem?
Freshwater is a precious resource on the Earth’s surface. It is also home to many diverse fish, plant, and crustacean species. The habitats that freshwater ecosystems provide consist of lakes, rivers, ponds, wetlands, streams, and springs.
Why are freshwater ecosystems valuable?
Fresh water is the lifeblood of our planet, and freshwater ecosystems connect people with the resources they need to thrive. But when rivers, lakes and wetlands are degraded, their ability to provide reliable supplies of clean water — and to support the species on which millions of people depend — is threatened.
What are the benefits of freshwater ecosystem?
Freshwater ecosystems provide water for home and farm use and for power generation and industrial development. Their biodiversity supports recreational activities and tourism.
What makes fresh water fresh?
A whopping 99 percent of Earth’s fresh water is either locked up in glacial ice (around 66 percent) or hidden away in underground aquifers (around 33 percent). Earth’s surface water, in rivers and lakes, represents only 1 percent of Earth’s fresh water—which is just 0.025 percent of all of Earth’s water.
Which ecosystem is more diverse and why?
Two of the Most Diverse Ecosystems on Earth
Species richness is greatest in tropical ecosystems. Tropical rain forests on land and coral reefs in marine systems are among the most biologically diverse ecosystems on Earth and have become the focus of popular attention.
Why ecosystem diversity is most significant for sustaining of biodiversity?
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. … A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
Which ecosystems are considered to be the most diverse?
Tropical forests are some of the most diverse ecosystems on earth. They are home to millions of well-known species, and millions more that are still undiscovered. There are flowers, plants, grasses, birds, insects, and fish. There are even soil microbes!