Abiotic Factors Influencing Aquatic Biomes

These flashcards cover key vocabulary and concepts related to aquatic biomes, focusing on their abiotic factors, characteristics, and the interactions within these ecosystems.

Abiotic Factors

Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.

Aquatic Biomes

Ecosystems found in bodies of water, classified into freshwater and marine biomes.

Stratification

The formation of distinct layers within a body of water, often due to differences in temperature and density.

Thermal Properties of Water

Characteristics that affect how water heats and cools, influencing marine ecosystems.

Photon Zone

The layer of a body of water where sunlight penetrates, allowing for photosynthesis.

Aphotic Zone

Depths of water where light cannot penetrate, supporting organisms that do not rely on sunlight.

Challenger Deep

The deepest known point in the Earth's seabed, located in the Mariana Trench.

Pelagic Zone

Open water zone in oceans where organisms are suspended in the water column.

Benthic Zone

The ecological region at the lowest level of a body of water, including the sediment surface.

Intertidal Zone

Area between high and low tide marks, characterized by fluctuating marine conditions.

Marine Biome

Largest biome on Earth, consisting of saltwater ecosystems like oceans, coral reefs, and estuaries.

Estuaries

Coastal areas where freshwater from rivers meets and mixes with saltwater from the ocean.

Halophytes

Plants that thrive in salty environments, often found in estuarine conditions.

Zooplankton

Small aquatic animals that feed on phytoplankton and form part of the aquatic food web.

Ecosystem Services

Benefits provided by ecosystems to humans, including resources like drinking water and sanitation.

Nitrogen and Phosphorus

Key limiting nutrients in aquatic systems that influence primary productivity.

Algal Blooms

Rapid increases in the population of algae in water bodies, often caused by excess nutrients.

Freshwater Biomes

Ecosystems that include lakes, ponds, rivers, streams, and wetlands.

Thermal Stratification

Layering of water in lakes and ponds due to temperature differences between warmer and cooler layers.

Phytoplankton

Photosynthetic plankton that serve as the primary producers in aquatic ecosystems.

Dissolved Oxygen

The amount of oxygen that is present in water, vital for aquatic life.

Hydrothermal Vents

Cracks in the ocean floor that emit hot, mineral-rich water, supporting unique ecosystems.

Coral Reefs

Underwater structures made from calcium carbonate secreted by corals, supporting diverse marine life.

Mutualism

A symbiotic relationship where both species benefit, such as corals and algae.

Abyssal Zone

The deep-sea zone, characterized by high pressure, low temperature, and minimal nutrients.

Neritic Zone

Shallow parts of the ocean extending from the high tide mark to the edge of the continental shelf.

Oligotrophic Waters

Waters that are low in nutrients, resulting in low algal growth and high oxygen levels.

Eutrophic Waters

Waters high in nutrients, often leading to excessive algal growth and low oxygen levels.

Sedimentation

The process by which particles of soil and organic matter settle at the bottom of bodies of water.

Ecosystem Stability

The ability of an ecosystem to maintain its structure and function over time.

Aquatic Producers

Organisms, primarily plants and algae, that produce organic compounds through photosynthesis.

Consumers

Organisms that obtain energy by consuming other organisms, including herbivores, carnivores, and omnivores.

Decomposers

Organisms like bacteria and fungi that break down dead organic material, recycling nutrients.

Biome Diversity

The variety of ecosystems and the numerous species that inhabit them.

Adaptations

Physical or behavioral characteristics that improve an organism's chances of survival and reproduction.

Chemical Composition

The specific arrangement and proportion of chemical elements in a substance.

Brackish Water

Water that is a mixture of fresh and saltwater, typically found in estuaries.

Salinity

The concentration of salt in water, an important factor affecting aquatic life.

Photosynthesis

Process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Biotic Factors

Living components of an ecosystem that interact with each other.

Abiotic Factors

Non-living components of an ecosystem such as temperature, light, and nutrients.

Oxygen Depletion

The reduction of dissolved oxygen in water, which can lead to the death of aquatic organisms.

Nutrient Cycling

The movement and exchange of organic and inorganic matter back into the production of living matter.

Bacterial Decomposition

The breakdown of organic matter by bacteria, crucial for recycling nutrients.

Salinity Variation

Changes in salt concentration within an estuary caused by tides and freshwater inflow.

Estuarine Adaptations

Physical, chemical, or behavioral traits that help organisms survive in estuarine environments.

Freshwater Flow

Movement of freshwater from higher elevations to lower areas, frequently influenced by gravity.

Source Water

The initial point of origin for rivers or streams, typically characterized by clear, nutrient-poor water.

Channel Width

The lateral extent of a river or stream's flow area, affecting water speed and sedimentation.

Photic Layers

Sunlit upper layers of water bodies where photosynthesis occurs.

Hydrodynamic Forces

The effects of water movement on organisms in aquatic environments.

Emergent Vegetation

Plants that grow in wetlands and have parts extending above the water's surface.

Marshes

Wetlands characterized by herbaceous plants, typically found in areas with shallow water.

Swamps

Wetlands dominated by trees and shrubs, usually located in low-lying areas.

Bogs

Wetlands that accumulate peat and are typically acidic and nutrient-poor.

Mudflats

Coastal wetlands that are exposed at low tide, often having rich habitats for various species.

Salt Marshes

Coastal wetlands flooded by salt water, supporting halophytic vegetation.

Ecological Niche

The role and position a species has in its environment, including all interactions.

Thermal Inversion

A meteorological phenomenon that occurs when a layer of warm air traps pollutants.

Phylum Cnidaria

A phylum that includes marine animals such as corals and jellyfish.

Phylum Mollusca

A phylum of invertebrates that includes snails, clams, and squids.

Phylum Echinodermata

A phylum of marine animals that includes sea stars and sea urchins.

Phylum Annelida

A phylum of segmented worms, including leeches and earthworms.

Phylum Arthropoda

The phylum that includes insects, crustaceans, and arachnids.

Phylum Chordata

The phylum that includes all vertebrates and some invertebrates.

Tidal Ranges

The difference in water level between high tide and low tide.