Citizens meet coral gardening

12 10 2021

It is possible to cultivate corals in the sea like growing a nursery of trees to restore a burned forest. Cultivated corals grow faster than wild corals and can be outplanted to increase the healthy area of damaged reefs. Incorporated in projects of citizen science and ecotourism, this activity promotes environmental awareness about coral reefs, the marine ecosystem that is both the most biodiverse and the most threatened by global change.

When I finished by undergraduate studies in the 1980s, I met several top Spanish marine biologists to prospect my first job ever in academia. In all one-to-one interviews I had, I was asked what my interests were. And when I described that I wanted to study ways of modifying impacted marine ecosystems to restore their biodiversity, a well-known professor judged that my proposition was an inviable form of jardinería marina (marine gardening) ― those words made me feel embarrassed and have remained vivid in my professional imagination since. Neither the expert nor the young researcher knew at the time that we were actually talking about ecological restoration, a discipline that was being formalised exactly then by botanists in their pledge to recover pre-European conditions for North American grasslands (1).

Aspects of coral gardening. The photos show (top) a diver scraping off (with the aid of a toothbrush) algae, sponges and parasites that compete for light and nutrients with the coral fragments under cultivation along suspended ropes (Cousin Island, Seychelles), (middle) coral outplantings in the Gulf of Eliat (Red Sea) hosting a diverse community of fish that clean off the biofouling for free (21), and (bottom) a donor colony farmed off Onna (Okinawa, Japan) (12). Photos courtesy of Luca Saponari (Cousin), Buki Rinkevich (Eliat) and Yoshimi Higa / Onna Village Fishery Cooperative.

Today, the term coral gardening encompasses the suite of methods to cultivate corals (tiny colonial jellyfish with an external skeleton and a carnivorous diet) and to outplant them into the wild to boost the growth of coral reefs following perturbations (2). In the face of the decline of coral reefs globally, due to the combination of climate change, pollution, and overfishing (3), this type of mariculture has gathered momentum in the last three decades and is currently being applied to more than 100 coral species in all the main reefs of our seas and oceans (4-6).

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Touchy-feely ecologists

18 04 2013

happy scientistOne of the many reasons I started this blog nearly five years ago was to engage both minds and hearts that my (and my colleagues’) scientific journal papers were failing to do. Of course we have emotional attachment to our areas of expertise (I’ve never met a good scientist who wasn’t passionate about what they studied) – but as Alejandro Frid encourages – we just have to transmit that emotional component better to our fellow human beings.

The title is not a joke about sensitive, New Age guys. I am quite serious about it. Though no academic superstar, I have been publishing in ecological and conservation journals for almost twenty years. I love the discipline. I’d hate to see it fail.

What I am talking about is this: ecologists read and write about ‘extinction’, ‘over-exploitation’, ‘climate change’ and so forth as a matter of routine. Yet at the same time, science journals are full of examples of how resources can be used more sustainably, of human behaviours that reduce the greenhouse gases that alter the climate and acidify the oceans, and of alternative economic models that value a healthy biosphere. So why do consumer apathy and political inertia still run the same old show?

I know, I know. Social scientists are working hard on this question (check out, for instance, just about any issue of Nature Climate Change). But what matters is not the rigorous answer that they might produce (we already know that it is 42 – Douglas Adams couldn’t be wrong); it is instead that most non-scientists probably don’t even care about the question. Read the rest of this entry »