This report is an attempt to address some critical information gaps regarding the effects of dikes and tide gates on coastal ecosystems and fisheries resources. The authors have identified the information needs during their work with landowners, community organizations, and resource management agencies and through a compilation and summary of...
This document is intended for policymakers so they can make informed decisions about upgrading or removing tide gates in an effort to improve conditions for Oregon’s native migratory fish and other animals and plants that inhabit estuaries.
It has two main sections: The first includes an overview of the technical...
Rivers support some of Earth’s richest biodiversity and provide essential ecosystem services to society, but they are often fragmented by barriers to free flow. In Europe, attempts to quantify river connectivity have been hampered by the absence of a harmonized barrier database. Here we show that there are at least...
The ultimate goals of this project are to 1) provide farmers with data-based advice on maintenance and enhancement of habitat for native wildlife based on what species are using the remnant/unfarmed patches on producers farms and to 2) provide background knowledge and data to enable development of a larger project...
1. Globally, river systems have been extensively modified through alterations in riverscapes and flow regimes, reducing their capacity to absorb geophysical and environmental changes.
2. In western North America and elsewhere, alterations in natural flow regimes and swimways through dams, levees, and floodplain development, work in concert with fire regime,...
This document reports on findings, conclusions and recommendations derived from scientific literature and knowledge regarding the effectiveness of tide gate removal or upgrade in improving conditions for Oregon’s native migratory fish species, particularly salmonids, and other plant and animal species that utilize estuarine ecosystems. The project was commissioned by the...
Aim: The ecological effects of biological invasions are well documented, but little
is known about the effects of invaders on the genetic structure of native
species. We examined the phylogeography, genetic variation and population
structuring of two galaxiid fishes, Aplochiton zebra and A. taeniatus, threatened
by non-native salmonids, and whose...
Aim: The ecological effects of biological invasions are well documented, but little
is known about the effects of invaders on the genetic structure of native
species. We examined the phylogeography, genetic variation and population
structuring of two galaxiid fishes, Aplochiton zebra and A. taeniatus, threatened
by non-native salmonids, and whose...
Aim: The ecological effects of biological invasions are well documented, but little is known about the effects of invaders on the genetic structure of native species. We examined the phylogeography, genetic variation and population structuring of two galaxiid fishes, Aplochiton zebra and A. taeniatus, threatened by non-native salmonids, and whose...