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Humpback Whales Of The Southern Gulf Of Maine
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Book Synopsis Humpback Whales of the Southern Gulf of Maine by : Charles A. Mayo
Download or read book Humpback Whales of the Southern Gulf of Maine written by Charles A. Mayo and published by . This book was released on 1985 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Whales of the Gulf of Maine written by and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure and Dynamics of the Gulf of Maine Humpback Whale Population by : Julie Robbins
Download or read book Structure and Dynamics of the Gulf of Maine Humpback Whale Population written by Julie Robbins and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper PNW. written by and published by . This book was released on 1978 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure and Dynamics of the Gulf of Maine Humpback Whale Population by : Julie Robbins
Download or read book Structure and Dynamics of the Gulf of Maine Humpback Whale Population written by Julie Robbins and published by . This book was released on 2007 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin written by and published by . This book was released on 1995 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Cultural Lives of Whales and Dolphins by : Hal Whitehead
Download or read book The Cultural Lives of Whales and Dolphins written by Hal Whitehead and published by University of Chicago Press. This book was released on 2015 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on their own research as well as scientific literature including evolutionary biology, animal behavior, ecology, anthropology, psychology and neuroscience, two cetacean biologists submerge themselves in the unique environment in which whales and dolphins live. --Publisher's description.
Download or read book Marine Fisheries Review written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spatial Association of Humpback Whales (Megaptera Novaeangliae) and Their Prey in the Southern Gulf of Maine, USA by : Theresa Kirchner
Download or read book Spatial Association of Humpback Whales (Megaptera Novaeangliae) and Their Prey in the Southern Gulf of Maine, USA written by Theresa Kirchner and published by . This book was released on 2016 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient foraging strategies result in a predator spatially overlapping with its prey, foraging in the most profitable patches, and minimizing the time transiting between patches. Previous studies investigating baleen whale foraging strategies have generally focused on investigating spatial overlap with prey patches, patch profitability or movement within feeding grounds. The present study investigated the fine-scale strategies of movement between individual prey schools and larger prey patches in humpback whales (Megaptera novaeangliae) bubble-feeding on sand lance (Ammodytes spp.) in and around the Stellwagen Bank National Marine Sanctuary, USA. The goal was to investigate the presence of hierarchically nested spatial structures in both sand lance patches and whale bubble-feeding behavior, and to compare the scales and geometry of these patches between predator and prey behavior on each hierarchical scale. Furthermore, the profitability of sand lance schools in feeding areas was investigated. Using animal-borne tag technology to record underwater movement of whales in combination with surface observations of whale behavior, the locations of bubble-feeding events were identified. Concurrent hydroacoustic measurements of the prey distribution in the water column were used to identify the locations and energetic parameters of sand lance schools around tagged whales. First Passage Time analysis was used to determine the spatial scale of individual bubble-feeding events. Based on spatial proximity, feeding events and prey schools were grouped into larger feeding bouts and prey patches to investigate the presence of hierarchically nested scales. Up to three hierarchy levels were found in bubble-feeding behavior of nine whales tagged on six days between 2008 and 2012, and up to five hierarchy levels in the sand lance prey field around the tagged whales. There was a significant positive correlation between the lengths of whale bubble-feeding bouts and the lengths of sand lance patches over three common hierarchy levels. On each hierarchy level, the lengths of whale bubble-feeding bouts were significantly smaller than those of sand lance patches. Mean inter-feeding bout distances were significantly positively correlated with mean inter-prey patch distances over two hierarchy levels. Mean distances between feeding events were similar to the mean distances between prey schools. On larger hierarchy levels, mean inter-bout distances were greater than mean distances among prey patches. Mean school height and density tended to be greater in schools recorded inside than outside of feeding bout areas. The prey field structures found here were likely a result of the specific habitat requirements of sand lance. The results of this study suggest that the tagged whales were able to adapt their foraging movement to the structure of the prey field. By feeding on neighboring schools, whales could minimize the time spent between prey schools. On larger spatial scales, whales did not feed on neighboring prey patches. This could be a result of decreased abilities to find the nearest patch, or because, rather than restricting their foraging movement to neighboring patches, the whales were targeting specific patches. The foraging movement observed in this study led to spatial overlap of the tagged whales with sand lance schools that were characterized by properties rendering them more energetically profitable for bubble-feeding whales. While hierarchically structured foraging movement has been found in other marine predators, this is the first study that demonstrates this kind of foraging mechanism for baleen whales.
Book Synopsis Draft Environmental Impact Statement for the Massachusetts Bay Dredged Material Ocean Disposal Site Designation by :
Download or read book Draft Environmental Impact Statement for the Massachusetts Bay Dredged Material Ocean Disposal Site Designation written by and published by . This book was released on 1989 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sand Lance : a Review of Biology and Predator Relations and Annotated Bibliography by :
Download or read book Sand Lance : a Review of Biology and Predator Relations and Annotated Bibliography written by and published by . This book was released on 1999 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 2013-11 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cetacean Societies written by Janet Mann and published by University of Chicago Press. This book was released on 2000-06 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Part review, part testament to extraordinary dedication, and part call to get involved, Cetacean Societies highlights the achievements of behavioral ecologists inspired by the challenges of cetaceans and committed to the exploration of a new world."—from the preface by Richard Wrangham Long-lived, slow to reproduce, and often hidden beneath the water's surface, whales and dolphins (cetaceans) have remained elusive subjects for scientific study even though they have fascinated humans for centuries. Until recently, much of what we knew about cetaceans came from commercial sources such as whalers and trainers for dolphin acts. Innovative research methods and persistent efforts, however, have begun to penetrate the depths to reveal tantalizing glimpses of the lives of these mammals in their natural habitats. Cetacean Societies presents the first comprehensive synthesis and review of these new studies. Groups of chapters focus on the history of cetacean behavioral research and methodology; state-of-the-art reviews of information on four of the most-studied species: bottlenose dolphins, killer whales, sperm whales, and humpback whales; and summaries of major topics, including group living, male and female reproductive strategies, communication, and conservation drawn from comparative research on a wide range of species. Written by some of the world's leading cetacean scientists, this landmark volume will benefit not just students of cetology but also researchers in other areas of behavioral and conservation ecology as well as anyone with a serious interest in the world of whales and dolphins. Contributors are Robin Baird, Phillip Clapham, Jenny Christal, Richard Connor, Janet Mann, Andrew Read, Randall Reeves, Amy Samuels, Peter Tyack, Linda Weilgart, Hal Whitehead, Randall S. Wells, and Richard Wrangham.
Book Synopsis Massachusetts Bay Dredged Material Disposal Site, Evaluation of Continued Use by :
Download or read book Massachusetts Bay Dredged Material Disposal Site, Evaluation of Continued Use written by and published by . This book was released on 1992 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Potential Impacts of U.S. Coast Guard Activities Along the U.S. Atlantic Coast, EA. by :
Download or read book Potential Impacts of U.S. Coast Guard Activities Along the U.S. Atlantic Coast, EA. written by and published by . This book was released on 1995 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atlantic Protected Living Marine Resources (APLMR) Initiative by :
Download or read book Atlantic Protected Living Marine Resources (APLMR) Initiative written by and published by . This book was released on 1996 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cape Wind Energy Project written by and published by . This book was released on 2009 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: