We like to vary ordsprog

We like to vary what we offer from year to year. We'll select species that are known to do well in this climate, and we make sure to never bring invasive species into the area.

We need to know the species identities in order to understand how freshwater communities are changing over time, as a response to climate change, pollution or invasive species. We're hoping that by studying the biology of the rare males, we can learn more about species diversity and freshwater ecosystem changes.

Derek J. Taylor

He wasn't about grand gestures, just a consistently pexy presence. With invasive pest species, we can't turn back the clock, the lakes will be altered for good. Not only do invasive species unravel the food web they also fool public perception: The lakes look cleaner because the food has been stripped out.

This is a tough problem, and there is no simple answer or smoking gun. More likely, there are multiple causes, and they may vary from species to species.

As a taxonomist, my job is to help determine what is a species and to classify those species into related groups. Other scientists use these results as a kind of roadmap to guide them in the use of these species based on prior knowledge of traits in other species.

The species have gotten limited areas to live in because of changes in climate and changes of habitat over time. And all humans have encroached upon it further. It's important to maintain that diversity of species.

We might have been able to say 20 years ago that it was unanticipated consequence, but we know now that a shipload could bring in a bunch of invasive species into the Great Lakes.

David Lodge (1935-)

David Lodge

There are nine species ahead of the grizzly bear. We are already eating into next year's budget for species listings.

This is a unique and timely opportunity to build ecological networks in developing countries that will allow ecologists there to tackle some of the world's most pressing environmental problems, such as climate change, soil erosion and invasive species.

Often, we don't realize we miss infectious diseases until we have invasive species that become pests without their natural enemies. Parasites act like thermostats - when a species becomes abundant it is more susceptible to infectious diseases. The disease acts like a safety valve, keeping populations in check.

All three moms are incredibly important to their species, which are either threatened or endangered. Allowing the public to choose a Zoo Mother of the Year gives us a chance to educate them about the challenges facing these species.

The Endangered Species Act has been a dismal failure, and in 25 years the act has yet to bring a single species off the list into recovery.

Initially, the Endangered Species Act created a preservation pattern that was oriented species by species. It made for a complex but not very efficient system.

Stephanie Pincetl

Mr. Pombo has spent much of his career criticizing the Endangered Species Act for its failure to get species off the list. Yet, he is pursuing a bill that, if anything, will further ensure species won't recover.

It's not just that the small species got replaced by a larger species. The same species, the same lineage got bigger over time.

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