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Introduction
Publications
Publications (106)
Scientists are oft trained to think that “feeling” is not simply irrelevant but antithetical to their methodologies. That scientists are not simply objectively trained minds but also bodies that feel has been an important feminist contribution towards reimagining scientific knowledge—not as the product of self-directed teleological discovery, but a...
Flowers have many sensory traits to appeal to pollinators, including ultraviolet (UV) absorbing markings, which are well known for attracting bees at close proximity (e.g. < 1 m). While striking UV signals have been thought to attract pollinators also at greater distances of meters, how the signals impact the plant pollination success over distance...
Over recent decades, our philosophical and scientific understanding of cognition has changed dramatically. We went from conceiving humans as the sole truly cognitive species on the planet to endowing several organisms with cognitive capacities, from considering brains as the exclusive seat of cognition to extending cognitive faculties to the entire...
Regular light-dark cycles greatly affect organisms, and events like eclipses induce distinctive physiological and behavioural shifts. While well-documented in animals, plant behaviour during eclipses remains largely unexplored. Here we monitored multiple spruce trees to assess their individual and collective bioelectrical responses to a solar eclip...
So Long, and Thanks for All the Fish”. With this message of goodbye, dolphins leave the planet for new worlds, ascending all at once from the sea to the cosmos. Earth is about to be destroyed. They have relentlessly attempted to warn humans of the impending danger, only to realise that they were not understood. Very arrogant and not as brilliant, t...
Flowers have many traits to appeal to pollinators, including ultraviolet (UV) absorbing markings, which are well-known for attracting bees at close proximity (e.g., <1 m). While striking UV signals have been thought to attract pollinators also from far away, if these signals impact the plant pollinia removal over distance remains unknown. Here, we...
Conventional scientific training instructs researchers to avoid empathy with their study subjects in the service of maintaining “objectivity” and warding off “anthropomorphism.” This approach creates an artificial gulf between human and nonhuman worlds, and renders nonhuman beings as radical others without minds or at best, as beings with minds tha...
How do we understand the dignity and value of non-human animals? Leading philosophers, ethnologists and writers contribute to this interdisciplinary and wide-ranging account of animal dignity.
With a foreword by world-leading primatologist, Dr. Jane Goodall DBE, essays collected here make the case for applying the concept of dignity beyond its usua...
Attention is the important ability of flexibly controlling limited cognitive resources. It ensures that organisms engage with the activities and stimuli that are relevant to their survival. Despite the cognitive capabilities of plants and their complex behavioural repertoire, the study of attention in plants has been largely neglected. In this arti...
Explorations of plant consciousness and human interactions with the natural world.
From apples to ayahuasca, coffee to kurrajong, passionflower to peyote, plants are conscious beings. How they interact with each other, with humanity and with the world at large has long been studied by researchers, scientists and spiritual teachers and seekers. The...
In “The Great Fish Pain Debate” (Issues, Summer 2010), Troy Vettese, Becca Franks, and Jennifer Jacquet rightly state that in Germany the assumption that fish feel pain resulted in court cases and fishing-related legislation from the 1980s onward. The initial focus was on fishing competitions, which were ruled as unjustifiable because their primary...
In 2016 we reported evidence for associative learning in plants (Gagliano et al., 2016). In view of the far-reaching implications of this finding we welcome the attempt made by Markel to replicate our study (Markel, 2020). However, as we discuss here, the protocol employed by Markel was unsuitable for testing for associative learning.
Understanding the dynamics of juvenile fish populations is a key component to understanding variation in adult populations, however, juvenile fish are frequently found in a variety of structurally complex habitats which are often not easily sampled. The use of baited (BRUV) and unbaited (RUV) remote underwater stereo-video to study juvenile fish po...
Plants do not possess brains or neurons. However, they present astonishingly complex behaviors such as information acquisition, memory, learning, decision making, etc., which helps these sessile organisms deal with their ever-changing environments. As a consequence, they have been proposed to be cognitive and intelligent, an idea which is becoming...
Treves et al. (2019) make a convincing case that conservation efforts need to go beyond an anthropocentric worldview. Implementing that vision, however, will require human advocates to represent nonhuman interests. Where will the knowledge of those interests come from? How can humans know what is in the best interest of another animal, a plant, or...
Hypotheses:
The drive to survive is a biological universal. Intelligent behaviour is usually recognised when individual organisms including plants, in the face of fiercely competitive or adverse, real world circumstances, change their behaviour to improve their probability of survival.
Scope:
This article explains the potential relationship of i...
Planetary health, formally defined as the interdependent vitality of all natural and anthropogenic ecosystems—social, political, and otherwise—is a vast concept that has now entered the scientific lexicon. The problems associated with planetary ill-health—biodiversity losses, climate change, environmental degradation, and other problems of so-calle...
This book assembles recent research on memory and learning in plants. Organisms that share a capability to store information about experiences in the past have an actively generated background resource on which they can compare and evaluate coming experiences in order to react faster or even better. This is an essential tool for all adaptation purp...
Across all species, individuals thrive in complex ecological systems, which they rarely have complete knowledge of. To cope with this uncertainty and still make good choices while avoiding costly errors, organisms have developed the ability to exploit key features associated with their environment. That through experience, humans and other animals...
“I think I’ve discovered the secret of life–you just hang around until you get used to it” ~ Charles Schultz.
In one of the most beloved comic strip of all times, the creator of Charlie Brown and Snoopy said it all. At the most basic level, this “getting used to it”—a decrease in response to a stimulus after repeated exposure—is what behavioural h...
Il est de plus en plus admis que les plantes sont des organismes très sensibles qui perçoivent, évaluent, apprennent, se souviennent, résolvent des problèmes, prennent des décisions et communiquent entre eux en acquérant activement de l’information sur leur environnement. Cependant, le fait que de nombreux comportements sophistiqués des plantes rév...
Water lilies flourish in clusters and hormonally communicate together within their community. They can self-reproduce and have mobility across the water surface, being both earthed and waterborne. The capacities of water lilies are further evidence that plants require critical and cultural examination, as companion species, and that plants require...
The eighteenth-century naturalist Erasmus Darwin (grandfather of Charles) argued that plants are animate, living beings and attributed them sensation, movement, and a certain degree of mental activity, emphasizing the continuity between humankind and plant existence. Two centuries later, the understanding of plants as active and communicative organ...
Language is often said to be one of the hallmarks of being human and is thought to have emerged from the interactions of three adaptive systems, namely, individual learning, cultural transmission, and biological evolution (Christiansen and Kirby 2003). The faculty of language has provided humans with an effective tool for classifying experiences, d...
Because water is essential to life, organisms have evolved a wide range of strategies to cope with water limitations, including actively searching for their preferred moisture levels to avoid dehydration. Plants use moisture gradients to direct their roots through the soil once a water source is detected, but how they first detect the source is unk...
Across all species, individuals thrive in complex ecological systems, which they rarely have complete knowledge of. To cope with this uncertainty and still make good choices while avoiding costly errors, organisms have developed the ability to exploit key features associated with their environment. That through experience, humans and other animals...
In complex and ever-changing environments, resources such as food are often scarce and unevenly distributed in space and time. Therefore, utilizing external cues to locate and remember high-quality sources allows more efficient foraging, thus increasing chances for survival. Associations between environmental cues and food are readily formed becaus...
Book Description. GRAFTING: do we ever do anything other than that? And are we ever free from vegetal influences when we engage in its operations? For the philosopher Michael Marder, our reflections on vegetal life have a fundamental importance in how we can reflect on our own conceptions of ethics, politics, and philosophy in general. Taking as hi...
Book Description. GRAFTING: do we ever do anything other than that? And are we ever free from vegetal influences when we engage in its operations? For the philosopher Michael Marder, our reflections on vegetal life have a fundamental importance in how we can reflect on our own conceptions of ethics, politics, and philosophy in general. Taking as hi...
Book Description. GRAFTING: do we ever do anything other than that? And are we ever free from vegetal influences when we engage in its operations? For the philosopher Michael Marder, our reflections on vegetal life have a fundamental importance in how we can reflect on our own conceptions of ethics, politics, and philosophy in general. Taking as hi...
In this chapter, I endeavor to recount the odd history of how we have come to perceive plants as we do, and illustrate how plants themselves perceive and sense the world and, most importantly, what they can tell us about our environment—what we call Nature. Through examples of the ingenious ways plants have evolved to thrive, I engage the idea that...
The Green Thread: Dialogues with the Vegetal World is an interdisciplinary collection of essays in the emerging field of Plant Studies. The volume is the first of its kind to bring together a dynamic body of scholarship that shares a critique of long-standing human perceptions of plants as lacking autonomy, agency, consciousness, and, intelligence....
Most colour patterns in animals represent an elegant compromise between conspicuousness to ensure effective communication with preferred receivers and camouflage to avoid attracting the attention of unwanted predators. Many species, including several coral reef fishes, overcome this conflict by using ultraviolet (UV) colouration and signalling, as...
Sentience: whatever its full scope of meaning may be, there is increasing doubt as to the wisdom of using a concept that is dependent upon a constantly changing combination of scientific and cultural assumptions as a human tool for differentiating between species of living beings.
Language is often considered a key feature of being human, and human linguistic behavior has been adopted as the universal template for studying the nature of language and its evolution. Yet it is not always clear what ''language'' actually is, and the lack of definition calls into question the notion that human language is unique because it has no...
See http://philosoplant.lareviewofbooks.org/?m=201503
It is increasingly recognised that plants are highly sensitive organisms that perceive, assess, learn, remember, resolve problems, make decisions and communicate with each other by actively acquiring information from their environment. However, the fact that many of the sophisticated behaviours plants exhibit reveal cognitive competences, which are...
See http://philosoplant.lareviewofbooks.org/?p=82
The nervous system of animals serves the acquisition, memorization and recollection of information. Like animals, plants also acquire a huge amount of information from their environment, yet their capacity to memorize and organize learned behavioral responses has not been demonstrated. In Mimosa pudica-the sensitive plant-the defensive leaf-folding...
Deception is ubiquitous in plant and animal kingdoms and is widely thought to provide selective advantages to the individual and evolutionary success to the species. Mimicry, a form of deception whereby an individual imitates their model to advantage by closely resembling their behavior or appearance, is particularly well documented and represented...
Sound and its use in communication have significantly contributed to shaping the ecology, evolution, behavior, and ultimately
the success of many animal species. Yet, the ability to use sound is not a prerogative of animals. Plants may also use sound,
but we have been unable to effectively research what the ecological and evolutionary implications...
Background
Both competitive and facilitative interactions between species play a fundamental role in shaping natural communities. A recent study showed that competitive interactions between plants can be mediated by some alternative signalling channel, extending beyond those channels studied so far (i.e. chemicals, contact and light). Here, we test...
In this article, I endeavor to recount the odd history of how we have come to perceive plants like we do, and illustrate how plants themselves perceive and sense the world and, most importantly, what they can tell us about Nature. Through examples of the ingenious ways plants have evolved to thrive, I engage the idea that our modern society is affl...
Eyespots on the body of many animals have long been assumed to confer protection against predators, but empirical evidence has recently demonstrated that this may not always be the case and suggested that such markings may also serve other purposes. Clearly, this raises the unresolved question of what functions do these markings have and do they co...
In this article, I examine human-plant perceptions and interactions in terms of developing a new perspective on the perception and the actions of people towards plants. By combining my scientific understanding of the biological world and my own experiences working with plant shamans, storytellers and mystics from around the world, I engage with the...
Over the last two decades, important insights into our understanding of plant ecology and the communicative nature of plants have not only confirmed the existence of a wide range of communication means used by plants, but most excitingly have indicated that more modalities remain to be discovered. In fact, we have recently found that seeds and seed...
Octopus cyanea is taken as an unregulated, recreationally fished species from the intertidal reefs of Ningaloo, Western Australia. Yet despite its exploitation and importance in many artisanal fisheries throughout the world, little is known about its life history, ecology and vulnerability. We used stylet increment analysis to age a wild O. cyanea...
Current knowledge suggests that the mechanisms by which plants communicate information take numerous forms. Previous studies have focussed their attention on communication via chemicals, contact and light; other methods of interaction between plants have remained speculative. In this study we tested the ability of young chilli plants to sense their...
Chemical testing of the experimental unit. Mean concentration of volatile anethole detected in different compartment of the experimental unit after 24 hr exposure. Volatile anethole was easily detectable and at high levels when the SPME fiber was sealed inside the central cylindrical box. However when the fiber was placed within the outer compartme...
Chemical testing of the experimental unit. Details on method validation to determine whether the experimental unit was volatile-proof.
(DOCX)
Germination of chilli seeds across treatments. Germination of chilli seeds is affected by the mere presence of an adult fennel plant. The percentage of seed germination over time is higher when the fennel is present but all known signals are blocked (grey boxes). The median, inter-quartile range and range are represented by the middle bar, the top...
Temperature profile within the experimental units. Mean temperature profile recorded inside the experimental unit over 24 hrs. The presence (i.e. F open, black dotted line; F masked, black solid line) or absence of an adult plant within the box (i.e. Control masked; grey solid line) had no effect on the temperature profiles seeds would experience w...
Tested effects in each treatment. The number 1 indicates that an effect was operating in a particular treatment, while the number 0 indicate it was not operating.
(DOCX)
Little is known about plant bioacoustics. Here, we present a rationale as to why the perception of sound and vibrations is likely to have also evolved in plants. We then explain how current evidence contributes to the view that plants may indeed benefit from mechanosensory mechanisms thus far unsuspected.
Otolith-fish size (O-L) relationships were analysed in recruits of two damselfish species (Chrysiptera rollandi and Pomacentrus amboinensis) before and after cohorts had settled onto reefs surrounding Lizard Island in Australia’s Great Barrier Reef. Unexpectedly,
O was found to be unrelated to L in pre-settlers of both species. Settlers sampled onl...
Ocean acidification is predicted to affect marine ecosystems in many ways, including modification of fish behaviour. Previous studies have identified effects of CO(2)-enriched conditions on the sensory behaviour of fishes, including the loss of natural responses to odours resulting in ecologically deleterious decisions. Many fishes also rely on hea...
Determining which marine species are sensitive to elevated CO2 and reduced pH, and
which species tolerate these changes, is critical for predicting the impacts of ocean acidification on
marine biodiversity and ecosystem function. Although adult fish are thought to be relatively tolerant
to higher levels of environmental CO2, very little is known ab...
Lipofuscin, an autofluorescent biomarker of physiological wear-and-tear, was concentrated in those areas of a fish's midbrain responsible for visual performance, suggesting a potentially strong link between physiological specialization, ecological adaptation and senescence.
Determining which marine species are sensitive to elevated CO2 and reduced pH, and which species tolerate these changes, is critical for predicting the impacts of ocean acidification on marine biodiversity and ecosystem function. Although adult fish are thought to be relatively tolerant to higher levels of environmental CO2, very little is known ab...
Ocean acidification is predicted to affect marine ecosystems in many ways, including modification of fish behaviour. Previous studies have identified effects of CO2-enriched conditions on the sensory behaviour of fishes, including the loss of natural responses to odours resulting in ecologically deleterious decisions. Many fishes also rely on heari...
Ocean acidification is one of the key threats facing coral reef ecosystems, but there are few estimates of spatial and temporal
variability in pH among reef habitats. The present study documents levels of spatial variability in pH among coral reef habitats
(9 to 10), among locations separated by 100’skm of latitude and between east (Great Barrier R...
Expert opinion was canvassed to identify crucial knowledge gaps in current understanding of climate change impacts on coral reef fishes. Scientists that had published three or more papers on the effects of climate and environmental factors on reef fishes were invited to submit five questions that, if addressed, would improve our understanding of cl...
In most egg-laying vertebrates, maternal responses to stressful conditions are translated into the release of glucocorticoid hormones such as cortisol, which are then transmitted to their developing embryos. Although such maternally transmitted hormonal resources have been shown to influence or even interfere with the optimal developmental trajecto...
The ubiquitous coenzyme Q (CoQ) is a powerful antioxidant defence against cellular oxidative damage. In fishes, differences in the isoprenoid length of CoQ and its associated antioxidant efficacy have been proposed as an adaptation to different thermal environments. Here, we examine this broad contention by a comparison of the CoQ composition and i...
Every organism has a history and its past experiences shape its present capabilities and may greatly influence the outcome of future events. For marine organisms with complex life cycles, seemingly discrete life stages separated by periods of rapid change (metamorphosis) have led researchers to focus on processes that occur within stages. Recent re...
Eyespots have long been thought to confer protection against predators, but empirical evidence demonstrating the effectiveness of these markings and their survival value in the wild is limited. Using a mark--recapture experiment, I examined the functional significance of the eyespot on the dorsal fin of a juvenile tropical fish to its survival on c...
Vertebrate animals localize sounds by comparing differences in the acoustic signal between the two ears and, accordingly, ear structures such as the otoliths of fishes are expected to develop symmetrically. Sound recently emerged as a leading candidate cue for reef fish larvae navigating from open waters back to the reef. Clearly, the integrity of...