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Between 1989 and 2007, 28 Distinct Population Segments (DPS) of Pacific salmon ( Oncorhynchus spp.) spawning in rivers in California and the Pacific Northwest (Oregon, Washington, Idaho) were listed (protected) under the US Endangered Species Act (ESA). In the roughly 25 years since then, considerable efforts have been made to recover these populations, but no DPS has increased sufficiently to be delisted. We evaluated abundan...
Some like it hot: Temperature and hydrodynamic factors influence Xenobalanus globicipitis attachment to cetaceansNARA Subscribed
Barnacles can reveal much about the physiology, health, and spatial ecology of their cetacean hosts. Here, we examine how temperature and hydrodynamic factors impact presence of Xenobalanus globicipitis , a pseudo‐stalked barnacle that attaches exclusively to cetaceans. We hypothesized that temperature is a key environmental factor (i.e., water temperature) and physiological factor, in that X. globicipitis prefers the warmest...
Aim Ixodes scapularis is the most important vector of human tick‐borne pathogens in the United States, which include the agents of Lyme disease, human babesiosis and human anaplasmosis, among others. The density of host‐seeking I. scapularis nymphs is an important component of human risk for acquiring Borrelia burgdorferi , the aetiological agent of Lyme disease. In this study we used climate and field sampling data to generat...
Poster abstractsNARA Subscribed
A bstract Propulsive movements of the caudal oscillating flukes produce large forces that could induce equally large recoil forces at the cranial end of the animal, and, thus, affect stability. To examine these vertical oscillations, video analysis was used to measure the motions of the rostrum, pectoral flipper, caudal peduncle, and fluke tip for seven odontocete cetaceans: Delphinapterus leucas, Globicephala melaena, Lagenor...
Maximum Swim Speeds of Captive and Free‐ranging Delphinids: Critical Analysis of Extraordinary PerformanceNARA Subscribed
A bstract Research into dolphin swimming historically was guided by false assumptions pertaining to maximum speed. Accurate measurements on swimming speed and duration of effort of free‐ranging dolphins are rare. To examine the variance of maximum swimming speeds, nearly 2,000 speed measurements were obtained for both captive and free‐ranging dolphins, including Tursiops truncatus, Pseudorca crassidens, Delphinus capensis , an...
The story is as old as our profession: private lands, low-value species, a stagnant rural economy, development pressure, and loss of forests. A group of foresters and landowners is trying to reverse this cycle by forming a cooperative enterprise. This article summarizes our approach and experiences during the start-up phase. The overarching objective of Massachusetts Family Forests is to sustain or enhance the forest resources...