The Issue of the Biodiversity Issue
In order to dig into the term and concept, let’s start with everyone’s favorite source…Wikipedia. The Wikipedia Biodiversity page states that the term “biological diversity” was first used in 1916, in a Scientific American article by J. Arthur Harris. It also states that E.O. Wilson claimed that the term was shortened to “biodiversity” by Walter G. Rosen. So, it has been in use for some time. On the surface, biodiversity seems a rather straightforward concept. Again, from Wikipedia, it refers to the “variety and variability” of organisms in the world.
Biodiversity, both the term and the concept, is value-rich. Different people see it differently, depending on personal values. Different human perspectives create different interpretations. There is a humanistic perspective to biodiversity, and it has a set of interpretations. As well, the scientific perspective has its set of interpretations.
In this blog entry, I will consider very briefly biodiversity from a values-based perspective. This perspective tends to be subjective. It might be embodied by personal non-technical experiences and by presentations in popular and news media, and other non-technical specialist resources, such as conservation organization literature. I begin here because it is in this context that I first came to the term, many years ago. I think it is possible to consider biodiversity entirely from the non-scientific perspective, creating a very strong opinion on biodiversity, while giving little effort to learning the scientific foundations upon which the “higher-end” humanistic perspectives depend.
One can look at biodiversity from the values-based perspective of a collector. This is perhaps the simplest interpretation. In this sense, the term can refer to the individual’s personal tastes in organisms. Biodiversity, in this sense, is very vague. Sentences like “I enjoy going to a zoo to see all the different animals,” “My child is really into biodiversity. He collects all those little plastic animals of bears and lions and horses.” From the perspective of iNaturalist, it is entirely possible to be involved in biodiversity data collection projects and have this perspective and know nothing of any other perspective. “I use iNaturalist to look at all the different animals in the world.” “I am really into cacti, and iNaturalist has a great global collection of cacti.” Here, an individual’s personal preferences for a collection is of greatest importance.
One also can look at biodiversity form the perspective of public communications. Biodiversity has a news and popular media presence, along with other biology topics, such as genetically modified organisms. When thinking of biodiversity from this perspective, we need to think about the intentions of the users of the term. The intentions might be to induce a certain behavior in the information consumer, for socio-political, market, or other reasons.
Often in these cases, there is an implication of danger, a warning, which has the potential to create an emotional response in the information consumer, thus, potentially modifying behavior. There are numerous terms, such as biodiversity loss, biodiversity crisis, the 6th mass extinction, and so forth, that are included in these presentations of biodiversity. Depending on the source of the information, this biodiversity perspective might present a plea. “Why doesn’t somebody do something?” And often there is some finger pointing at corrupt politicians, disinterested worker bees and youth more interested in social media.
I want to look at the loss concept a bit. What is it to lose biodiversity? With biodiversity loss comes loss of intangibles. These potentially include moral/ethical and aesthetic things. One implication is that when we lose biodiversity, our morality is correspondingly decreased by some amount. We all want to be moral, right? From an aesthetics perspective, biodiversity loss might diminish the beauty of the world. Who among us wants an ugly world?
With biodiversity loss also come loss of tangible things. These potentially include some of the many products which humans already, or could, derive from organisms. Loss of rainforest biodiversity provides a great example. Loss of plant biodiversity in a tropical rainforest might lead to the loss of countless as-of-yet unidentified phytochemicals, medicines, that is. Ethnobotany, the study of human uses of plants, has historically focused on tropical rainforests for researching plants with potential cancer treatment applications. Biodiversity loss, therefore, can lead to loss of human lives. There is a loss of earth systems integrity to consider. As biodiversity is lost, ecosystem services might be diminished, which might lead to a domino effect of negative consequences, including exacerbating global climate change. Again, the tropical rainforests are known to function as carbon-sinks, locations where a large amount of carbon is sequestered.
Regardless of the specific type of loss, the point of biodiversity thinking here is not so much to evaluate biodiversity per se, that is, to consider the variety and variability of life, but to emphasize that biodiversity is important, that biodiversity is decreasing, that biodiversity loss leads to a non-preferred state, or outcome, and that maybe someone should do something to avert those consequences. Generally, when biodiversity is presented in this way, it is so done in a non-technical manner. I think that I have never come across a presentation of biodiversity loss which self-examines from the scientific/quantitative perspective. Mention of decreases is incidental, is secondary to the consequences of the decreases. Conversely, these discussions seem to imply that more biodiversity is better.
I am interested in the foundations of arguments. Setting aside the more simplistic interpretations of biodiversity, upon what is the argument for preventing biodiversity loss, or increasing biodiversity gain, built?
Next, we will begin to get into some nuts and bolts of biodiversity science.