Environmental Factors in Ecosystems

Environmental Conditions

Key Environmental Factors

  • Wind: Influences plant transpiration and seed dispersal; can affect temperature and moisture levels.

  • Humidity: Affects the rate of evaporation and transpiration in plants; high humidity can lead to fungal diseases.

  • Light: Essential for photosynthesis; different plants have varying light requirements, influencing their distribution.

  • Air Temperature: Affects metabolic rates in organisms; extreme temperatures can limit species distribution.

  • Salinity: Important in aquatic ecosystems; affects osmoregulation in organisms and can limit species diversity.

  • Rainfall: Influences soil moisture and nutrient availability; patterns of rainfall can determine the type of vegetation in an area.

Soil Characteristics

  • Nutrient Availability: Essential for plant growth; includes macronutrients (N, P, K) and micronutrients (Fe, Mn).

  • Soil Moisture: Critical for plant health; affects germination, growth, and nutrient uptake.

  • Soil Composition: Refers to the mineral and organic matter in soil; influences drainage and nutrient retention.

  • Soil Stability: Affects erosion and the ability of plants to anchor; stable soils support diverse ecosystems.

Biotic Factors (Community Interactions)

Intra-specific Interactions

  • Definition: Interactions among individuals of the same species.

  • Mates: Competition for mates can lead to sexual selection, influencing traits within a population.

  • Rivals: Competition for resources such as food and territory can affect population dynamics.

  • Competitors: Intra-specific competition can lead to resource partitioning or changes in behavior.

Inter-specific Interactions

  • Definition: Interactions between individuals of different species.

  • Food Relationships: Includes predator-prey dynamics; affects population sizes and community structure.

  • Predators: Influence prey populations; can lead to evolutionary adaptations in prey species.

  • Parasites: Affect host health and population dynamics; can lead to co-evolution between hosts and parasites.

  • Competitors: Competition for resources can lead to niche differentiation and biodiversity.