And that approach has really been followed, I think, for the past couple of decades, with some success, but in many cases, with, really, I think, marginal gains. predation , all kinds of things that happen to species to drive them extinct.
So it's very fitting. Predation or parasitism is one gets a positive effect.
This is plainly predators and prey. And we're seeing predation in the world for the first time. And that starts to beg some questions about, well, what do you need?
This may well be his blood brother. The art of predation .
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, due to predation . So the large animals have escaped, essentially, the force of predation .
So it's very fitting. Intra-gilled predation is when two species predate each other at different moments of growth.
This may well be his blood brother. It's the art of predation .
And every single person there that I talked to, every person of color that I put a microphone to or my tape recorder or my notepad, could tell a story about harassment and predation , everything from a state senator who told the story about being at a fair when she was 16 with a fire truck that you could go in.
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, So animals could be regulated by predation from the top down, or by food from the bottom up.
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, And they'll potentially fully die by predation .
Well, turns out, first of all, Tony carefully looked at what buffaloes die from. It turns out they don't die that often from predation . That's not the major cause of mortality.
who's getting eaten? Like this is, again, there's lots of exceptions. You can't have nature without things like that. But this is the absolute rule of thumb for how foraging and growth and predation operate across everything from fish to starfish, fish as predators, starfish, praying mantis, all the way up to things like big cats via stuff like crocodiles.
are on board, we've got a perfect opportunity of recreating buck what used to be there. There's been a lot of great stuff that we're working on with lion predation and so forth to actually educate how to protect cattle from wildlife.
Iain: This is a graph, again, it's rather depressing, what its showing is the wounding rate in our population from 1998 up to 2011 with the first part of this year, too. And the light colors there are wounds caused by traditional forms of human predation , through spears and arrows but the dark is gunshots. So you see there a whole trend of what's happening. If you look at the population itself using this individual ID system, and this is George Wittemyer's work, you see here the line at the top, that's the total size of the population.
it. And every documentary, you gotta have lions taking down a wildebeest or even a buffalo. Like, these are weird and rare outcomes. These don't usually happen. The vast majority of active predation is on stuff much, much, much smaller than you. I totted some of this up for a paper I did on Microraptor, this really small gliding dinosaur from China, where we actually have a bunch of specimens with various stomach contents in them.
So we eliminated that. So how else could he explain more buffaloes if it's not more food and it's not less predation ? Well, a third candidate would be disease.
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, And what this is is a plot of the percent of the animals that die by predation against animal body size.
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, And there's a little bit in between here-- so buffalo, maybe about 20% predation , zebra a higher fraction.
And all the bite marks are on one bone, the humerus, the upper arm bone. the healed bite marks with T-rex teeth buried in bones, which is pretty much definitive active predation . So we've got evidence of it doing both.
And as these graphs show, the efforts are bringing real results. Violent crime-- in any part of the world that exists in a state of anarchy, it is easy for there to be predation by individuals or gangs often followed by cycles of revenge and vendetta and blood feud.
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, And if you look at the smaller animals, like the oribi and the impala and the topi-- 100% predation .
Bob Paine also coined another term to describe this sort of relationship, this sort of cascading effect of one species on others, But if you go to the other end of this, with elephants, and hippopotamus, and rhinoceros, you see virtually no predation -- no significant mortality
The largest fishes, like tuna, salmon, many of the other ones, are teetering on the brink of collapse. There aren't many fish left. And so what I've just been saying, the reductionism, commodification, exclusion, and predation is another.
We say that the world is full of unpredictable risk, but a fish doesn't try to turn a shark into a vegetarian. By that, I mean the fish will do everything in its power to avoid getting eaten by that shark, but it doesn't implicitly understand that it can get rid of the threat of predation . We spend a lot of time in society trying to assure ourselves, and spend a lot of resources assuming that we can eliminate risk in our world.