Sentence examples for changes in keystone from inspiring English sources

Not surprisingly, people tend to react strongly (and often negatively) to abrupt changes in keystone species, because so many of their activities depend on the functions such species afford.

Waiting to observe changes in the keystone species would not allow any intervention because the system would already be spiralling towards collapse.

Cascading and cumulative long-term effects of climate change, including shifts in host pathogen relationships, may be among the factors contributing to large-scale changes in abundance and distribution observed in keystone wildlife (e.g., boreal woodland and barren-ground caribou) in northern North America.

The State Department has already put off a decision on Keystone pending changes in the route and further environmental reviews, and has indicated that any attempts to hasten the project will most likely result in its disapproval, a warning White House officials gleefully repeated time and again on Saturday.

The emissions impact will depend on how markets respond to changes in the global supply of oil that Keystone XL will create and on how policymakers and investors respond to Obama's decision.

Variation in P. rugosus densities among different-aged treatments suggests a substantial time lag in response that could reflect temporal changes in habitat quality or facilitation by a keystone rodent, Dipodomys spectabilis.

The "o" in "Keystone" replicated the Obama campaign logo.

Stake in Keystone Consolidated down twothirds in the same period.

But her insurer, Keystone Health Plan Central, refused to pay the $7,000 bill because Schwartz was not in Keystone's network.

By searching for changes in the structure of populations that includes the ratio of keystone, weedy and canary species, we were able to detect a clear signal of an impending collapse many years, sometimes decades before the actual event.

Contaminants may exert direct effects on keystone facilitator and foundation species, and contaminant-induced changes in nutrient and oxygen dynamics may alter ecosystem function.