We sit next to him before crackling campfires when he joins fellow scientists and listen as they explain their life's work to understand the many nuanced reasons that make some species rare.
The ornate shells that make some species valuable as pets also make them vulnerable to extinction in the wild, since these turtles frequently are found only in small geographic areas or do not breed in captivity.
"It's the outlandish, most obvious stuff that makes some species survive over others," he says.
Under certain circumstances, environmental constraints may make some species of parasitic nematodes vulnerable to an eradication program.
This review covers the process and drivers of species invasions in Europe, the socio-economic factors that make some regions particularly strongly invaded, and the ecological factors that make some species particularly invasive.
The unusually warm temperatures have interrupted bird migration and bear hibernation patterns, and made some species -- like the snowshoe hare, which counts on using its white fur to blend into the snow -- more vulnerable to predators.
Therefore, the urbanization process is a challenge for biodiversity conservation [3] but it also presents a unique scenario for evolutionary biologists to study specific traits that make some species better at colonizing new niches than others [4].
Although the ability of many bats to enter areas without tree cover makes some species less vulnerable to fragmentation, several investigators have described the sensitivity of Neotropical bats to anthropogenic habitat change [8], [11], [12], [13], [14].
We have found that males of many Cicadettini can be attracted by sounds like finger-snaps if they follow the correct song echeme within roughly 100 ms, although differences between species in wariness and strictness of reply timing make some species more difficult to attract than others.
The factors that make some species highly susceptible to WNV remain largely unknown.
The numerous goods and services provided by Prosopis have led to global introductions and have made some species important for local communities.
