PDS APES 8th Period 2009-10

What would be America’s version on the cane toad story in Australia? It would have to be something introduced on purpose to control another “pest” species, right?  Well, although not carnivores, the Asian Carp might be a similar story here in the US of A.

http://www.invasivespeciesinfo.gov/aquatics/asiancarp.shtml

Check out this recent story at the NPR website that details biologist’s battles with this aquatic herbivore…

Image from NPR story

If you have time, try this story about a chemical solution. What will it take to stop these guys?  Maybe we should try what some Louisiana-based companies suggest and EAT them?

Anybody got another nominee???

This terminology is really not making any sense to me. The book says instrumental value is “usefulness to us” regarding economic and ecological services.
Yet it goes on to describe a “type” of instrumental value to be NONuse value… Which includes existence, aesthetic, and bequest value. These don’t seem for ecologically or economically valuble though

Hey guys, I know this is kinda late, and this might be a stupid question, but question 2 of study guide 9 is about different extinctIon types and it says to provide an example of each species that is either local,ecological, or biological. I couldn’t figure out what species were good examples of these three categories. Did anyone pick up on that in the reading? Thanks!

Hey, guys. I’m just having a wee bit of trouble distinguishing multiple-use lands, moderately-restricted-use lands, and restricted-use lands. What are the differences between the different types of each again? National Wilderness Preserves are the only place left truly untouched, correct? I know this is a bit late, but if any of you guys could answer these questions for me, it would be a major help.

Just a couple of questions:

First, I know that the Wilderness Act of 1964 allows Congress to designate a wilderness area, but I am a bit confused why it is controversial. Do people think that it is too much, or not enough? (Question 23 in Chap 8 study guide)

And then, for ecological extinction to occur, does the species even have to exist in the wild anymore? Or can it just be in zoos/aquariums and stuff? And what are examples of ecologically extinct species? (Question 2 in Chap 9 study guide)

Thanks!

Can someone help me understand the differences between Selective and Shelterwood cutting?

I am a little confused on how wildlife farms help protect the species.  In the book it states that they help raise individual species who are threatened and use their meat or hides in commercial sales.  How is selling their products for our profit saving them?  Are we not killing them and therefore not helping grow in number? I must be missing some piece about this because it does not make any sense.  If someone one could clear this up that would be great!

Okay, so I’m going through all the supplemental notes, and I’m wondering if anyone has a clever way to distinguish the following pieces of legislation and if someone can double-check the accuracy of my shortened definitions of each piece of legislation.

Wilderness Act of 1964: restrictions on activities done in an area

National Environmental Policy Act 1969: consider environmental impacts when there are proposed federal projects

CITES: treaty (species approach)

CBD: treaty (ecosystem approach)

Lacey Act: civil/criminal penalties given

On the supplemental notes about forestry methods, I am trying to figure out how to link the management systems to the harvest methods. Uneven-aged management would involve selective cutting, and even-aged management would involve clear cutting. What kind of management is it when a manager clear cuts a natural forest, harvesting forests of different ages?

I guess strip-cutting can be either even-aged management or uneven–only even-aged if it involves a tree farm?

Also, the book mentions mining as an economic value of forests, but what kind of mining are they talking about? Do they just mean mineral mines that happen to be found in forests, and in order to access them, forests have to be fragmented? Could somebody give me an example of this?

Thanks, guys! : )

As I looked at the titles of our study guides, I realized I’m a little confused about distinguishing strategies and tactics of the species and ecosystem approaches.  I know the Species Approach focuses on protecting the actual species itself, and the Ecosystem Approach focuses on protecting populations of species in their natural habitats while protecting their habitat areas.  It makes sense to me that the Ecosystem Approach would focus on the larger picture by protecting different habitats, which would ultimately end up help to protect entire populations of species.  My question comes in with the Species Approach- in our notes (from 1/7/10), I have written down that the Species Approach strategy includes protecting the endangered species’ habitats, and under tactics, I have one written down about managing the habitats of endangered species… does this mean that the Species Approach will have to use parts of the Ecosystem Approach??   It just seems like the Species Approach is similar to the Ecosystem Approach (besides that fact that it protects and identifies individual species).  Also, I would think that the Ecosystem Approach may be better in the long run for protecting endangered species (as well as the environment)… Perhaps I missed this, but which of these approaches is most likely to “work the best” (if we can generalize it that much)??