Ecosystem services and integrity trend

Ecosystems are dynamic complexes of plant, animal, and microorganism communities, interacting with the nonliving environment (soils, water, minerals, air) in the form of functional units. These functional units occupy a diverse range of scales in the environment. Ecosystem services may be defined as goods and services from ecosystem structures and functions such as food, fiber, and fuel and climate regulation. These services have also been described as nature’s contributions to people, implying that humans are passive and active recipients of these services but rarely pay for them in any monetary sense. Ecosystem integrity may be defined as the system’s capacity to maintain structure and ecosystem functions using processes and components characteristic for its particular eco-region, i.e., an area where there are similar geographical characteristics, such as geology, vegetation, and climate. Ecosystem services integrity trend refers to changes in ecosystem goods and services, their ecosystem structures and functions, and hence their ability to provide food, fiber, and fuel and regulate climate. Human activities are the main drivers of changes in trends in ecosystem services and hence their integrity trend at different spatial and temporal scales. Social-ecological systems are complex adaptive systems composed of many diverse human and non-human entities that interact; these inherently linked systems adapt to changes in their environment, and their environment changes as a result.