How biological systems inspire sustainable design

How biological systems inspire sustainable design

Bio-inspired design, or biomimicry, is increasingly recognized as a creative approach and a rigorous scientific methodology for addressing sustainability challenges in the built environment. According to Aamer et al. (2020), biomimicry allows designers to move beyond superficial imitation of nature and toward a deeper integration of biological principles into building performance. This involves analyzing how organisms adapt to their environment, manage energy, water, and material flows, and how their internal behaviours can inspire systemic architectural solutions.

A key concept is the closed-loop material and energy flow observed in ecosystems. In a forest, waste from one organism becomes food for another; nothing is discarded. Urban designers are beginning to adopt this model through circular urban systems, where waste, water, and energy are recycled. This systems-level thinking reflects the logic of ecosystems and supports more resilient urban infrastructure (Kennedy et al., 2015). Even the structure of organisms influences design. For instance, the form of the boxfish has inspired aerodynamic cars and building facades due to its optimized structure for reducing drag (Bar-Cohen, 2012). These examples illustrate that nature provides both functional models and design principles that can directly inform how we shape future cities.

One of the most critical shifts advocated in recent research is from mimicking the form of nature to understanding and replicating its function and behaviour. Aamer et al. (2020) emphasize the importance of this transition by highlighting the gap in past architectural practices, which often used natural aesthetics without achieving functional sustainability. Through a problem-based biomimetic approach, they propose a methodology that focuses on building behaviour, including energy efficiency, thermal comfort, material performance, and environmental responsiveness. This process starts with identifying architectural challenges and seeking solutions from biological role models that have evolved to overcome similar conditions.

The methodology described in their study includes simulating biological systems through experimental abstraction and translating these into architectural prototypes. It spans three levels of biomimicry: organism level (specific form or function), behaviour level (interaction with environment), and ecosystem level (systemic flows and relationships). The behaviour level is particularly emphasized, as it enables buildings to respond adaptively, similar to how living organisms regulate heat, moisture, or light.

• Levels in biomimicry design

Biomimetic design can be applied at different levels depending on how designers interpret and extract natural ideas. According to Bader et al. (2021) and Chayaamor-Heil (2023), biomimicry operates on three primary levels: organism, behavior, and ecosystem.

The organism level involves direct inspiration from a specific plant or animal. This might include replicating the entire organism or focusing on a particular structural or functional characteristic that can be applied to a design challenge. The behavior level focuses on how a living organism interacts with its environment. This includes studying adaptive actions, such as how particular species manage temperature, moisture, or movement to their surroundings. The ecosystem level takes a broader approach, drawing from the principles that allow ecosystems to function efficiently and sustainably. These include energy cycling, biodiversity, symbiotic relationships, and resilience.

Further refinement of biomimetic interpretation is found in the work of Mirniazmandan and Rahimianzarif (2017), who propose five sub-levels of imitation: form, material, construction, process, and function. These allow designers to isolate specific aspects of biological systems that may be relevant to the built environment. In addition, Oguntona and Aigbavboa (2023a) describe three conceptual approaches to working with bio-inspiration: imitation, emulation, and inspiration. These dimensions range from directly copying nature’s forms to drawing abstract ideas and applying them creatively to solve design problems.

A related concept that supports the shift toward nature-integrated design is biophilia. While not technically classified under bio-inspired design, biophilic design promotes the connection between humans and the natural world. Defined by Edward O. Wilson and Stephen Kellert, biophilia refers to the inherent human tendency to seek contact with nature. This concept is rooted in our evolutionary history and biological development. According to Calabrese (2015), biophilic design aims to restore this lost connection in modern environments by incorporating environmental features, natural forms, daylight, spatial variety, and local identity. These strategies contribute to spaces that support human wellbeing in cognitive, emotional, and physical dimensions.

In addition to biomimicry and biophilia, there is a growing interest in distinguishing between nature-based solutions (NbS) and nature-inspired solutions (NiS). Nature-based solutions are typically linked to living ecosystems and rely on their continued ecological functions to deliver water purification, carbon storage, or climate regulation benefits. In contrast, nature-inspired solutions, including biomimicry, are derived from principles and strategies observed in nature but do not require functioning ecosystems to work. As IUCN (2020b) outlined, NiS refers to innovative systems, materials, or processes designed using insights from biology, enabling scalable applications in architecture and engineering.

Applying biomimetic design allows us to view nature not just as a source of beauty or inspiration but as a source of knowledge and innovation. By translating natural strategies into architectural systems, designers can create buildings and infrastructures that are regenerative, adaptive, and resilient. The following table presents selected examples of biological systems and their corresponding architectural applications, demonstrating how biomimicry continues to shape the future of sustainable design.

Table 1- Biological Systems and Their Architectural Applications

To fully understand the potential of bio-inspiration in sustainable architecture, it is essential to move from theoretical principles to real-world applications. Biological organisms offer diverse strategies developed through millions of years of adaptation, methods that can directly inform how we design, build, and operate urban environments. In the context of biomimicry, success lies not in copying nature’s appearance but in translating its functions, behaviours, and systems into human design in meaningful and measurable ways.

The following sections highlight three well-researched biological models, termite mounds, lotus leaves, and tree/root branching systems, that have inspired innovative architectural and urban solutions. These examples illustrate how biological strategies have been adapted into building systems to solve challenges such as climate control, water conservation, self-maintenance, and resource distribution. Each case connects directly to a practical application and is supported by scientific research.

Together with the following table, these case studies provide a foundation for understanding the depth and versatility of bio-inspired design. They showcase how learning from nature’s “design textbook” can produce more innovative, resilient, and sustainable human environments.