Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

Hi, Warren, et al., The idea you mention, that homosexuality or asexuality evolved as a means of regulating population seems flawed to me. For one thing, in human populations, many if not most homosexuals become parents. In the past, in places where homosexuality was forced underground, many of

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

I remember reading an article several years ago that said increasing population density, human and non-human, results in increasing homosexual or asexual behavior as an ostensible means for reducing reproduction rates. I don’t remember if this was just a hypothesis or if it was based on

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

You might also consider cases where individuals hold territories and territories are necessary for breeding success. In some cases territories simply shrink in size with higher pop. numbers, but in many there is a minimum territory size and thus a limit to the # of potential territories.

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

I suppose density-dependent reductions in per capita seed production might be an example. On Thu, Jan 21, 2016 at 5:11 AM, Thomas Rosburg wrote: > Here’s the question: *Has any population of organisms (humans excluded) > regulated and reduced their population size by

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

Hi, Howie, You might consider the research by David Lack (I believe) on island populations of birds that decreased their clutch size during times of resource shortage. However, if I remember the study correctly, there are a couple of caveats : Individuals breeding females decreased their clutch

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

Here’s the question: Has any population of organisms (humans excluded) regulated and reduced their population size by lowering their birth rate instead of increasing their death rate? And have any slowed their rate of increase by raising the age at first birth? Most of the examples I know of

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

India has tried offering couples a monetary reward (“honeymoon package”) if they would postpone having their first child for at least 2 years. I don’t know what their birth rates have been since they instituted the policy, but that’s worth looking into.

[ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

Hi all - I am currently working on an abstract about global climate change for a regional biology meeting in the southeast, and I wanted to say something about the control of natural populations of organisms, but I am not sure if the statement I want to make is true, so I’m asking for some

Re: [ECOLOG-L] Reducing Population Size in Natural Populations of Organisms - A Question

Dear Howie, There are a couple of different issues that relate to your question. 1) Other species don’t DELIBERATELY regulate their population size - if they don’t have consciousness (as we understand it), they can’t make that decision even if it would be advantageous in terms of not