Ideal-Type Narratives for Engineering a Human Niche

The human side of biodiversity: coevolution of the human niche, palaeo-synanthropy and ecosystem complexity in the deep human past

Today's biodiversity crisis fundamentally threatens the habitability of the planet, thus ranking among the primary human challenges of our time. Much emphasis is currently placed on the loss of biodiversity in the Anthropocene, yet these debates often portray biodiversity as a purely natural phenomenon without much consideration of its human dimensions and frequently lack long-term vistas. This paper offers a deep-time perspective on the key role of the evolving human niche in ecosystem functioning and biodiversity dynamics. We summarize research on past hunter-gatherer ecosystem contributions and argue that human-environment feedback systems with important biodiversity consequences are probably a recurrent feature of the Late Pleistocene, perhaps with even deeper roots. We update current understandings of the human niche in this light and suggest that the formation of palaeo-synanthropic niches in other animals proffers a powerful model system to investigate recursive interactions of foragers and ecosystems. Archaeology holds important knowledge here and shows that ecosystem contributions vary greatly in relation to different human lifeways, some of which are lost today. We therefore recommend paying more attention to the intricate relationship between biodiversity and cultural diversity, contending that promotion of the former depends on fostering the latter. This article is part of the theme issue 'Ecological novelty and planetary stewardship: biodiversity dynamics in a transforming biosphere'.

The ‘Anthropocene Proposal’: A Possible Quandary and A Work-Around

The debates about naming the unfolding times of anthropogenic global change the ‘Anthropocene’ are ultimately debates about the ‘human condition’. The proposal to amend the geological time scale by adding an ‘Anthropocene’ epoch (that is, the ‘Anthropocene proposal’ in its strict sense) is both an intra-geoscience debate about scientific sense-making and a debate about the societal context of the geosciences. This essay juxtaposes these debates, starting from three postulates: first, that the scientific methods of geological chronostratigraphy are applied rigorously; second, that anthropogenic global change is happening; and third, that the ‘Anthropocene proposal’ may be rejected if it does not meet the conditions required for its approval based on the rigorous application of the scientific methods of geological chronostratigraphy. These postulates are analysed through the lenses of the Cape Town Statement on Geoethics and the normative statements of the ‘geoethical promise’. It is found that an ethical quandary would arise if the ‘Anthropocene proposal’ were to be rejected. Consequently, and given the societal contexts of the geosciences, it is explored whether distinguishing between the geological past (as demarcated according to current chronostratigraphic methodology) and contemporary geological–historical times (characterised somewhat differently) could offer a work-around to tackle the quandary.

Ethics to Intersect Civic Participation and Formal Guidance

Sound governance arrangement in socio-ecological systems (human niche) combines different means of sense-making. The sustainability of human niche-building depends on the governability of the social-ecological systems (SES) forming the niche. Experiences from small-scale marine fisheries and seabed mining illustrate how ethical frameworks, civic participation and formalised guidance combine in the context of a “blue economy”. Three lines of inquiries contextualise these experiences driving research questions, such as “what is the function of ethics for governability?” First, complex-adaptive SES are featured to emphasise the sense-making feedback loop in SES. Actors are part of this feedback loop and can use different means of sense-making to guide their actions. Second, the “Voluntary Guidelines for Sustainable Small-Scale Fisheries” and geoethical thinking are featured to highlight the relevance of actor-centric concepts. Third, Kohlberg’s model of “stages of moral adequacy” and the United Nations Convention on the Law of the Sea (UNCLOS) are used to show how to strengthen actor-centric virtue-ethics. Combining these lines of inquiry leads to the conclusion that ethical frameworks, civic participation and formalised guidance, when put in a mutual context, support governability and multi-actor/level policy-making. Further research could explore how creativity can strengthen civic participation, a feature only sketched here.