We present the geomorphology of the Eastern Samoa Volcanic Province, covering 28,446 km², and depths ranging from ~50-4000 m. A new compilation of available multibeam data reveals 51 previously undocumented seamounts, and delineates major submarine rift zones, eruptive centers, and volcanic plateaus. Moving from a regional to local scale, and...
INTRODUCTION: Many species of ambystomatid salamanders are dependent upon highly variable temporary wetlands
for larval development. High larval densities may prompt the expression of a distinct head morphology that may
facilitate cannibalism. However, few studies have characterized structural cannibalism within natural populations of
larval salamanders. In this study we used...
The eruption of South Sarigan Seamount in the southern Mariana arc
in May 2010 is a reminder of how little we know about the hazards associated with
submarine explosive eruptions or how to predict these types of eruptions. Monitored
by local seismometers and distant hydrophones, the eruption from ~ 200...
This annotated bibliography is a response to widespread interest in stream habitat improvement in the Pacific Northwest by land managers, governmental and nongovernmental organizations, and the lay public. Several guides to stream habitat improvement have been written in the past, but may not be easily accessible to people from diverse...
Large carnivores face serious threats and are experiencing massive declines in their populations
and geographic ranges around the world. We highlight how these threats have affected the
conservation status and ecological functioning of the 31 largest mammalian carnivores on
Earth. Consistent with theory, empirical studies increasingly show that large carnivores...
Full Text:
Status and Ecological Effects of the World’s Largest Carnivores
William J. Ripple,* James A. Estes
Large carnivores face serious threats and are experiencing massive declines in their populations
and geographic ranges around the world. We highlight how these threats have affected the
conservation status and ecological functioning of the 31 largest mammalian carnivores on
Earth. Consistent with theory, empirical studies increasingly show that large carnivores...
Full Text:
Carnivores
Status and Ecological Effects
of the World’s Largest Carnivores
William J. Ripple,* James A
Air-breathing marine animals face a complex set of physical challenges associated with diving that affect the decisions of how to optimize feeding. Baleen whales (Mysticeti) have evolved bulk-filter feeding mechanisms to efficiently feed on dense prey patches. Baleen whales are central place foragers where oxygen at the surface represents the...
Large carnivores face serious threats and are experiencing massive declines in their populations and geographic ranges around the world. We highlight how these threats have affected the conservation status and ecological functioning of the 31 largest mammalian carnivores on Earth. Consistent with theory, empirical studies increasingly show that large carnivores...
Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey were once abundant in ceded area streams of the Umatilla Indian Reservation (John Day, Umatilla, Walla Walla, Tucannon, and Grande Ronde...
Increasing public awareness that the Cascadia subduction zone in the Pacific Northwest is capable of great earthquakes (magnitude 9 and greater) motivates the Cascadia Initiative, an ambitious onshore/offshore seismic and geodetic experiment that takes advantage of an amphibious array to study questions ranging from megathrust earthquakes, to volcanic arc structure,...