Freshwater biomes
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Freshwater biomes can be characterized by their salt concentration, links to surrounding terrestrial environments, and water flow patterns. Lakes and ponds are bodies of standing freshwater that can be classified as oligotrophic, mesotrophic, or eutrophic depending on their nutrient levels. Rivers and streams transport water from headwaters to mouths, with zones that change from clear and rocky to wider and silty based on elevation and sediment load. Wetlands are rich freshwater habitats that support hydrophytic plants like marshes, swamps, and bogs.
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The document stratifies different aquatic biomes as follows:
1. Freshwater biomes include ponds, lakes, streams and rivers. Ponds and lakes are divided into littoral, limnetic and profundal zones. Streams and rivers have headwaters, middle sections and mouths.
2. Transitional waters between freshwater and saltwater include estuaries and wetlands. Wetlands are divided into mineral soil and organic soil types. Estuaries have four formation types.
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Aquatic ecosystem
Definition
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∆Freshwaters
=Lentic (still water)
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∆Marine ecosystem
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∆Stratification
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=Pro-fundal
∆components
Producers
Consumers
Decomposers
∆threats to ecosystem
∆solutions
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This document provides an overview of marine ecosystems. It discusses the key characteristics of marine ecosystems, including their biotic and abiotic components. Some of the unique properties of marine environments that affect life are also outlined, such as water quality, buoyancy, light penetration in water, and hydrostatic pressure. The document then examines several types of marine ecosystems in more detail, including oceans, estuaries, and coral reefs. For oceans, it describes their global coverage and roles in climate regulation. Estuaries are presented as productive coastal zones where freshwater and saltwater mix that serve as important nurseries. Food webs in marine ecosystems are also briefly summarized.
Similarities and Differences between Aquatic and Terrestrial ecosystems
Aquatic and terrestrial ecosystems share some key similarities, but also have important differences. Both include communities of interdependent species organized into trophic levels that generally reach equilibrium. However, aquatic ecosystems support more life due to nutrient richness and greater stability, with less fluctuation in variables like temperature. Oxygen and light can also be limiting factors in some aquatic environments that are rarely issues terrestrially. Additionally, gravity influences terrestrial animals more while buoyancy impacts organisms in aquatic settings.
Freshwater ecosystems
Freshwater ecosystems include streams, rivers, ponds, lakes, and wetlands. Streams join to form larger rivers. Ponds and lakes have three zones - a littoral zone near shore with plants, an open-water zone where sunlight reaches, and a deep-water zone without sunlight. Wetlands soak up flood waters and replenish groundwater. They include marshes with grasses and swamps with trees. Over time, a lake can fill in with sediment and transform into a forest. The ocean contains diverse ecosystems shaped by temperature, depth, and sunlight. It has zones like intertidal, neritic, oceanic, and benthic that support different life.
4 4 aquatic ecosystems(biology)
This document defines and describes various types of aquatic ecosystems. It discusses plankton, wetlands, estuaries, salt marshes, mangrove swamps, photic and aphotic zones in oceans, coastal oceans, kelp forests, coral reefs, and benthos. It also notes that aquatic ecosystems are determined by water depth, flow, temperature and chemistry, and that freshwater ecosystems can be flowing or standing water. Marine ecosystems are divided into intertidal, coastal, and open ocean zones based on depth and distance from shore.
Water Pollution in Lakes
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Water Pollution in Lakes (causes, effects, sources)
Lake ecosystem report enoch bareng taclan
Lakes and ponds vary greatly in size and can form through geological, glacial, volcanic, or other natural processes. They support a diversity of plant and animal life adapted to different zones defined by water depth, temperature, and light availability. Larger lakes are often classified as oligotrophic or eutrophic based on nutrient levels, which influence productivity. Species inhabiting lakes and ponds perform important ecological functions like providing fresh water and supporting food webs, but these ecosystems also face threats from pollution and eutrophication.
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Similarities and Differences between Aquatic and Terrestrial ecosystems
Similarities and Differences between Aquatic and Terrestrial ecosystems
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Freshwater biomes
- 1. FRESHWATER BIOMES Freshwater biomes are usually characterized by a salt concentration of less than 1%. Freshwater biomes are closely linked to the soils and biotic components of the terrestrial biomes through which they pass or in which they are situated. The particular characteristics of a freshwater biome are also influenced by the patterns and speed of water flow and the climate to which the biome is exposed.
- 3. Lakes and Ponds Large(Lakes) and Small(Ponds), natural bodies of standing fresh water Formed when depressions in earth’s surface are filled with: Precipitation Runoff Groundwater Large lakes may have many of same characteristics as oceans
- 4. Classification Depending on the amount of organic matter produced.
- 5. OLIGOTROPHIC deep cold small surface area relative to depth nutrient-poor phytoplankton are sparse, not very productive don’t contain much life waters often very clear sediments low in decomposable organic matter
- 6. MESOTROPHIC moderate nutrient content moderate amount of phytoplankton reasonably productive
- 7. EUTROPHIC shallow warm large surface area relative to depth nutrient-rich phytoplankton more plentiful and productive waters often murky high organic matter content in benthos leads to high decomposition rates and potentially low oxygen
- 8. EUTROPHICATION Oligotrophic lakes may develop into eutrophic lakes over time. Runoff from surrounding terrestrial habitats brings in mineral nutrients and sediments. Human activities increase the nutrient content of runoff due to lawn and agricultural fertilizers; municipal wastes dumped into lakes dramatically enriches the nitrogen and phosphorus concentrations which increases phytoplankton and plant growth. Algal blooms and increased plant growth results in more detritus and can lead to oxygen depletion due to increased decomposition.
- 13. WETLANDS areas of standing water that support aquatic plants among the richest biomes for its diverse communities marshes, swamps, and bogs are considered wetlands can be freshwater or saltwater plant species adapted to the very moist and humid conditions are called hydrophytes
- 15. RIVERS and STREAMS bodies of water that move continuously in one direction water changes from their point of origin (headwaters) to where they empty into a larger body of water (mouth) In the headwaters, the water is cold and clear, carries little sediment, and has few mineral nutrients. Near the mouth, water moves slowly and is more turbid due to sediment entering from other streams and erosion; the nutrient content is also higher.