Discontinuities in the Fossil Record | Evolution News and . . . For example, 80 percent of all families of living land vertebrates are represented in the fossil record (Denton 1985), which can be readily extrapolated to most other groups and time horizons Before we look at some examples for abrupt origins, we have to address a potential objection
Estimating biomass of benthic kelp forest invertebrates from . . . As expected, that can be broadly applied to species within a larger taxo- body composition varied within and among phyla The nomic group has considerable appeal Our results, however, percent water mass averaged 61–72 % across all phyla suggest that estimating the mass of an organism from its except Mollusca, which averaged 44 % (Fig 1a)
Reduction of invertebrate herbivory by land use is only . . . Legumes, however, have high nitrogen contents, which makes them more attractive for herbivores in general (Loranger et al , 2012), thus increasing their herbivory level While fertilization intensity was positively linked to the proportion of grasses, but negatively to the proportion of legumes, the opposite was true for grazing intensity
Monarch butterfly - Biological Diversity Their most recent numbers, however, were below 30,000 for the second year in a row, down from 1 2 million two decades ago Climate change also threatens to disrupt the monarch’s migration and render its overwintering habitats unsuitable by the end of the century Chart by Tierra Curry Image is available for media use