Sentences with phrase «between predation»

All of which raises serious doubt about the implied connections — both direct and indirect — between predation and population impacts.

Much of that effort has involved the untangling of predation estimates based on indefensible sampling and extrapolation, and — more important — decoupling the implied relationship between predation and population - level impacts.

These findings raise additional questions about the often - implied connection between predation by free - roaming cats and declining bird numbers.

In other words, no difference between predation rates predicted by actual hunting observation and those predicted by way of prey returned home.

In fact, this report does nothing more than imply a causal link between predation by cats and declining bird species — providing nothing in the way of evidence.

Although it's packaged somewhat «softly,» we're back to the same old speculative connections between predation and population impacts (familiar terrain for Lepczyk, who tried to connect these same dots in his PhD research).

«With our results of a negative relationship between predation pressure and longevity that is largely independent of other key life history traits we were able to confirm the universality of the 50 year old evolutionary theory of aging on a broad geographical scale» concludes Mihai Valcu, first author of the study.

Not exact matches

Retaliation for livestock predation is the primary cause of jaguar deaths: 96 percent of the estimated 230 jaguar killings between 1989 and 2014 were attributed to this cause.

«This paper ties it all together and shows a very clear relationship between the disappearance of sea ice and increasing predation intensity on seabirds,» says Andrew Derocher, a polar bear specialist and Arctic ecologist at the University of Alberta in Edmonton, Canada.

«The disparity between human and animal predation rates is a useful way of illustrating how ecologically out - of - whack many exploitation rates and management policies are.»

The inverse correlation between the number of tool - using macaques, prey size and availability, suggests that predation pressure may be the primary cause of shellfish body size and population on these islands.

Can adaptive evolution or behaviour lead to diversification of traits determining a trade - off between foraging gain and predation risk?

Nevertheless, if we want to better understand the impact of free - roaming cats on wildlife, we can not ignore the distinction between — and inherent implications of — these two types of predation.

Hawkins» research methods and analysis are so problematic that the suggestion of a causal relationship between the presence of cats and the absence of birds (native or otherwise) is highly inappropriate (indeed, Hawkins scarcely investigates predation at all).

It's difficult enough to show a direct link between observed predation and population impacts; suggesting a causal connection between high cat densities and declining bird populations is misleading and irresponsible.

Gone are the doubts that George expressed — first, regarding the impact of cat predation on rodent and other prey populations; second, regarding the relationship between these populations and the raptors that feed on them.

Impressive Estimates In «Free - Ranging Domestic Cat Predation on Native Vertebrates in Rural and Urban Virginia,» [2] published in 1992, the authors estimated that the state's 1,048,704 cats were killing between 3,146,112 and 26,217,600 songbirds each year.

In Part 3 of this series, I discussed the distinction between compensatory and additive predation.

On the other hand, the pilot study fits more neatly into the argument put forward by Longcore et al. — an argument that doesn't even recognize the distinction between compensatory and additive predation.

Then, too, there's the critical distinction between compensatory and additive predation — again, a point I've made numerous times.

Two of the greatest threats to wildlife globally are intensifying fire regimes and predation by invasive predators, and our documentation of interaction between these factors has major implications for conservation38.

By being kept indoors, cats are protected not only from some diseases and from predation by motor vehicles but also from what are often hostile relationships between neighborhood outdoor - access cats (both pets and ferals).

The relationship between cat predation and bird populations is highly complex, and our understanding quite limited — something Longcore et al. only hint at.