Category Archives: Metabolism

Life Inside the Cell – Waking Up to the Miracle, part 1a

[This is the first in an extended series of three posts, this one on life within the cell, the second, on the evolution of plants, and the third on the New Phylogeny and Eudicots.  Some time ago I began this ‘theme’ with an extensive post on Monocots. This first ‘installment’, concerning life within the cell, is divided into two parts, the first, with the ‘a’ in its title, covers the growth and function of the cell itself and, importantly, the role of water within it.  The second, with the ‘b’ in its title,, will examine the concept of quantum biology and its explanative necessity for life beyond the ‘simple’ construct of cells, tissues and organisms. While trying to understand the ongoing reorganization and classification of plants, I found it necessary to better understand these other topics, what it is that we are ‘messing’ with! ]

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I begin here with the cell, what I’ve learned about what makes the cell, its existence and life within it, so amazing, something which should give us all pause, when we consider our own lives and what we do.  When scientists ‘split hairs’ in their arguments on which group to assign a species, when they attempt to link them to their ancestors, so many of which are now long extinct, to understand their relationships with other organisms, they have a purpose.  They are often looking much deeper into what a plant is, what constitutes life and how it evolved.  Phylogeny, the science that attempts to establish relationships between different organisms, different species, to link one to the other across time, is about both the history and the continuing journey of life on this planet.  It promises to tell us much about our own place as well as that of the hundred’s of thousands of other species with which we share it.  Ultimately, if we choose to understand this, it will change the way we garden and our relationship with the many landscapes that cover the Earth.  Our gardens are our own personal expressions, works of ‘art’, and must live within the parameters life has set for them on our little pieces of ground.  They reflect our understanding of the limits and possibilities at work here.  The better that we understand this the ‘better’ our gardens will be, the more in synch they will be with life.   Continue reading

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Hummingbirds in the Real World: evolution, physiology and relationship

800px-Giant_hummingbird_Patagonia_Gigas_on_cactus_in_Peru_by_Devon_Pike

Giant Hummingbird, Patagona gigas on Cactus in Peru, by Devon Pike

Hummingbirds are clearly fascinating and engaging creatures.  They are biological wonders of ‘invention’, little gems that sparkle in their airborne dances through sunlight, with the seductive power to capture the attention of even the most incognizant of us lumbering earthbound humans, including many of those pretty much blind to the natural world.  I did not set out to write this piece, I was researching several Puya species of the South American Andes, curious about their survival and pollination and became intrigued by these miraculous little fliers.  Part of our fascination with them I think is attributable to their size.  There are 338 known species today, 104 genera, which as a group comprise the entire Hummingbird family, the Trochilidae, the second largest bird family found in the Americas, numbers that speak to their success that many ornithologists say ‘could’ continue to increase over the next several million years!  The species range in size from the tiny Bee Hummingbird, of Cuba, about 2″ long and less than 2 grams in weight to the 9″ long, 24 grams, that’s around 3/4 of an ounce, of the behemoth, Giant Hummingbird found in much of the more arid western Andes from Ecuador south into central Chile.  The Giant, Patagona gigas, is the sole species of its genus, though there is a subgenus that is found into Ecuador,  and it is thought to be about as large as any Hummingbird can be.  Any bigger and it is thought that those characteristics that differentiate Hummers from other birds become more difficult to sustain. Continue reading