Filters: Tags: Herbivores (X) > Categories: Data (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts William G Jenkins Michael P Chenaille U.S. Geological Survey - ScienceBase Ecosystems Western Ecological Research Center More... Tag Types Theme (2) USGS Scientific Topic Keyword (2) Place (2) Harvest Set (2) Tag Schemes USGS Thesaurus (2) ISO 19115 Topic Category (2) None (1) Common geographic areas (1) Marine Realms Information Bank (MRIB) keywords (1) View Results as: JSON ATOM CSV

Stable isotope dynamics of herbivorous reef fishes and their ectoparasites: 2012, 2013, 2018 Acanthurid surgeonfishes are an abundant and diverse group of herbivorous fishes on coral reefs. While their contribution to trophic linkages and dynamics in coral reef systems has received considerable attention, the role of linkages involving their parasites has not. As both consumers of fish tissue and prey to microcarnivores, external parasites can play a significant role in trophic transfer between the primarily algae-based food source and the broader coral reef community. Stable isotope analysis is a common tool for studying trophic linkages, which can be used for studies involving parasites. These data were collected to examine the stable isotope ecology (13C and 15N) of copepod (Caligus atromaculatus) and... Categories: Data; Tags: Aquatic Biology, Ecology, Ecology, USGS Science Data Catalog (SDC), Virgin Islands of the United States, All tags... Wildlife Biology, Wildlife Biology, Wildlife Disease, Wildlife Disease, coral reefs, farming, herbivores, oceans, parasites, Fewer tags Greater Sage-Grouse Nest Observations Before and After Wildfire Disturbance in Northeastern California (2007-2018) We monitored Greater Sage-Grouse (Centrocercus urophasianus; hereafter, Sage-Grouse) nests and various habitat characteristics at the nest locations near Susanville in northeastern California, crossing over into northwestern Nevada. We employed a before-after-control-impact (BACI) experimental design to account for spatiotemporal heterogeneity in the system and to derive estimates of relative change in survival parameters. Sage-Grouse nest survival decreased after the Rush Fire but decreased more in the burned area relative to the unburned area. Although female Sage-Grouse continued to occupy burned areas, nest survival was reduced from 52 percent to 19 percent. Using a BACI ratio approach we found that nest survival... Categories: Data; Tags: California, Ecology, Environmental Health, Susanville, USGS Science Data Catalog (SDC), All tags... Western U.S., Wildlife Biology, biota, ecology, environment, fires, habitat alteration and disturbance, herbivores, human impacts, native species, shrubland ecosystems, Fewer tags