As terrestrial leaf litter decomposes in rivers, its constituent elements follow multiple
pathways. Carbon leached as dissolved organic matter can be quickly taken up by …

Of the 70 cases of classical biological control for the protection of nature found in our review,
there were fewer projects against insect targets (21) than against invasive plants (49), in …

The widespread replacement of native species with cosmopolitan, nonnative species is
homogenizing the global fauna and flora. While the empirical study of biotic homogenization …

Over the past century, the natural flow regimes of the major western US rivers have been
altered by dams, flow regulation and diversion of water for human use. As a result, the …

Ground-water and surface flow depletions are altering riparian ecosystems throughout the
southwestern United States, and have contributed to the decline of forests of the pioneer …

After a large crown fire in Arizona, we examined the direct and indirect effects of fire and
herbivory (and their interaction) on the regeneration of aspen (Populus tremuloides) and …

Saltcedars (Tamarix ramosissima and T. chinensis) are native to Asia, but since introduction
into the USA have become common and invasive in many western riparian habitats. Recent …

Over a period of 20 years, Chinese privet, Ligustrum sinense, invaded a mixed hardwood
forest in western North Carolina, USA. The invasion penetrated about 30 m under the …

Tamarisk species (genus Tamarix), also commonly known as saltcedar, are among the most
successful plant invaders in the western United States. At the same time, tamarisk has been …

Altering stream flows and groundwater have modified how streams are connected to riparian
floodplain vegetation. This disconnection has led to the proliferation of non-native and …