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Recent Trends In The Abundance Of The Invasive Green Crab Carcinus Maenas In Bras Dor Lakes And Eastern Nova Scotia Based On Trap Surveys
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Book Synopsis Recent Trends in the Abundance of the Invasive Green Crab (Carcinus Maenas) in Bras D'Or Lakes and Eastern Nova Scotia Based on Trap Surveys by : M. J. Tremblay
Download or read book Recent Trends in the Abundance of the Invasive Green Crab (Carcinus Maenas) in Bras D'Or Lakes and Eastern Nova Scotia Based on Trap Surveys written by M. J. Tremblay and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trapping surveys for the invasive green crab (Carcinus maenas) were undertaken in Eastern Nova Scotia and in the Bras d'Or Lakes in 1999-2000 and 2005. Interviews were also conducted with fishermen and other coastal inhabitants. Green crab were widespread throughout the sampling area and showed no change in range over the time period. Green crab abundance either decreased or did not change between 1999-2000 and 2005. Catch rates of green crab in the Bras d'Or Lakes were lower in 2005 than the earlier period. The decline in green crab abundance in Bras d'Or Lakes was not clearly linked to lower water temperatures. Outside of the Bras d'Or Lakes, there were no significant differences in green crab catch rate between 1999-2000 and 2005.--Abstract.
Book Synopsis Canadian Technical Report of Fisheries and Aquatic Sciences by :
Download or read book Canadian Technical Report of Fisheries and Aquatic Sciences written by and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bedford Institute of Oceanography ... in Review by : Bedford Institute of Oceanography
Download or read book Bedford Institute of Oceanography ... in Review written by Bedford Institute of Oceanography and published by . This book was released on 2006 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bedford Institute of Oceanography by : Bedford Institute of Oceanography
Download or read book Bedford Institute of Oceanography written by Bedford Institute of Oceanography and published by . This book was released on 2006 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of the Non-indigenous European Green Crab, Carcinus Maenas, on Two Native Decapods in the Bras D'Or Lakes, Nova Scotia by : Erin Alison Breen
Download or read book Effects of the Non-indigenous European Green Crab, Carcinus Maenas, on Two Native Decapods in the Bras D'Or Lakes, Nova Scotia written by Erin Alison Breen and published by . This book was released on 2008 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Elizabeth H. Cameron Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612795433 Total Pages :186 pages Book Rating :4.7/5 (954 download)
Book Synopsis Recruitment of the Invasive Green Crab, Carcinus Maenas, in Nova Scotia [microform] by : Elizabeth H. Cameron
Download or read book Recruitment of the Invasive Green Crab, Carcinus Maenas, in Nova Scotia [microform] written by Elizabeth H. Cameron and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2003 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature and Predator Effects on Green Crabs (Carcinus Maenas) and Their Distribution in South Slough National Estuarine Research Reserve by :
Download or read book Temperature and Predator Effects on Green Crabs (Carcinus Maenas) and Their Distribution in South Slough National Estuarine Research Reserve written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invasive green crab (Carcinus maenas) has increased in abundance and distribution among Oregon's estuaries. Its global success in establishing in new environments and tolerance for abiotic stressors, such as temperature, raises concern for C. maenas to negatively influence native crab species, especially given global climate change. To improve in predicting invasion impacts, this work analyzed the results from a controlled tank experiment at Portland State University and the field data on a population of C. maenas in South Slough National Estuarine Research Reserve (SSNERR). The aquarium experiment documented predation pressure on C. maenas across a range of temperatures (9° to 30°C) and predatory crabs Callinectes sapidus, Cancer productus, and, as a control C. maenas. The behavioral responses of prey C. maenas were observed across temperature and predator combinations. There were five categories of behavioral responses measured in time duration. The west Atlantic C. sapidus preyed heavily on C. maenas, especially at warmer water temperatures; however, east Pacific C. productus preyed much less on C. maenas and only at the cold temperatures, suggesting different trajectories of biotic resistance across the coasts as waters warm. Crab behavior aligned with the predation findings. For example, C. productus were most active at 9°C and all died at 27°C and higher. In tanks with C. productus, C. maenas were most aggressive at warm temperatures. In contrast C. maenas spent more time feeding at 9°C when in tanks with C. sapidus and, surprisingly, also with C. productus. Crab trap data from SSNERR was plotted on a map to identify surrounding habitat and bottom substrate of areas with high catch per unit effort (CPUE) of C. maenas in the last six years. Mean CPUE of C. maenas was below five throughout the SSNERR region with sites closest to the mouth of the estuary having the highest CPUE rates. Little structure was surrounding trapping sites; however, there was seagrass at sites with the highest CPUE of C. maenas. The mean CPUE difference of native species prior to (2002-2016) and following (2016-2021) C. maenas abundance increase in 2016 was compared to the mean CPUE of C. maenas in the last six years. Results indicated no correlation between the CPUE of C. maenas influencing the difference of CPUE of native crab species. The tolerance and predation avoidance demonstrated from prey C. maenas in warmer temperatures indicate their ability to acclimate and/or adapt in stressful climate change conditions of higher water temperatures. This is of concern due to the increasing potential to negatively affect Oregon native crab species, such as C. productus over time.
Book Synopsis Biogeographic Variation in Abundance, Habitat, and Behavior of the European Green Crab, Carcinus Maenas by : Rikke Kvist Preisler
Download or read book Biogeographic Variation in Abundance, Habitat, and Behavior of the European Green Crab, Carcinus Maenas written by Rikke Kvist Preisler and published by . This book was released on 2010 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Global Invader by : Sylvia Behrens Yamada
Download or read book Global Invader written by Sylvia Behrens Yamada and published by . This book was released on 2001 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Writing to educate those concerned with sea life in the Pacific Northwest, Yamada (zoology, Oregon State U., Corvallis) traces the generally devastating impact of the invasive European green crab with reference to research carried out in New England, California, Oregon, South Africa, Australia, and Tasmania. A full description of the biology and life history of the European green crab is provided, along with photos, glossary, list of references, and descriptive table of Pacific Northwest crabs. Annotation copyrighted by Book News, Inc., Portland, OR.
Book Synopsis Investigating Presence/absence of Invasive European Green Crab in Southern Southeast Alaska by : Tammy J. Davis
Download or read book Investigating Presence/absence of Invasive European Green Crab in Southern Southeast Alaska written by Tammy J. Davis and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study are to detect the presence of invasive European green crab Carcinus maenas in nearshore habitats at locations in southern Southeast Alaska, including Revillagigedo and Gravina Islands, targeted for potential suitability for establishment. Where the invasive crab is detected, additional surveys will be implemented to determine the magnitude of abundance and delineate distribution. ShoreZone is used to identify survey locations. Roadside and remote shoreline molt and trapping surveys will be conducted. Alaska Department of Fish and Game will use presence and absence data to understand the extent of the aquatic invasive species in southern Southeast Alaska and may inform future assessment.
Book Synopsis Changes in Abundance of the Green Crab, Carcinus Maenas (L.), in Relation to Recent Temperature Changes by : Welch, Walter R.
Download or read book Changes in Abundance of the Green Crab, Carcinus Maenas (L.), in Relation to Recent Temperature Changes written by Welch, Walter R. and published by . This book was released on 1969 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USING LOCAL AND SCIENTIFIC PERSPECTIVES TO UNDERSTAND FACTORS AFFECTING THE DISTRIBUTION OF INVASIVE GREEN CRAB (CARCINUS MAENAS L.). by : Jessica Cosham
Download or read book USING LOCAL AND SCIENTIFIC PERSPECTIVES TO UNDERSTAND FACTORS AFFECTING THE DISTRIBUTION OF INVASIVE GREEN CRAB (CARCINUS MAENAS L.). written by Jessica Cosham and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental management is becoming more informed through the use of less conventional knowledge sources to understand environmental systems. Following this realization, our study accesses both local and scientific knowledge to improve understanding of which environmental factors drive local-scale distribution of an invasive species, the European Green Crab (Carcinus maenas L.). It also attempts to understand how C. maenas behaviour might differ in the South Shore area of Nova Scotia, Canada. We synthesized scientific knowledge through an extensive literature review, while interviewing local South Shore fishermen who have experience with C. maenas. While several environmental factors are delineated, our research also notes internal (i.e. age, sex, moult phase) and temporal (i.e. seasonal, tidal, diel) variables that affect local distribution patterns. Local knowledge of this species is still developing, however it may play a significant role in understanding the local distributions and movements of this species, especially as knowledge develops.
Book Synopsis European Green Crab (Carcinus Maenas) Predation on the American Oyster (Crassostrea Virginica) in the Bras D'Or Lakes by : Brittany A. Ellerbrok
Download or read book European Green Crab (Carcinus Maenas) Predation on the American Oyster (Crassostrea Virginica) in the Bras D'Or Lakes written by Brittany A. Ellerbrok and published by . This book was released on 2008 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Holistic Approaches for Invasive Species Management by : Bobbie Buzzell
Download or read book Holistic Approaches for Invasive Species Management written by Bobbie Buzzell and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Establishment of the European green crab (Carcinus maenas) on the west coast United States has led to concerns regarding loss of eelgrass beds and influence on marine communities. To begin examining whether predators can potentially buffer green crab expansion, I studied river otter (Lontra canadensis) diet from scat remains and estimated green crab abundance from removal trapping efforts. River otter scats on the Wa'atch and Tsoo-Yess rivers, Washington, USA, were collected during August-September 2018 and April-September 2019. Hard remains of prey were reported as percent frequency of occurrence, and green crab prey were compared to monthly catch-per-unit-effort (CPUE). Scats collected from the Tsoo-Yess River contained no green crab, perhaps due to the relatively low abundance of green crab compared to other crustacean and fish prey. River otters consumed green crab in the Wa'atch River, but its low occurrence in their diet (0.7-5.2%) suggests that they were not an important prey source. However, I hypothesize that if green crab numbers increase there will be a subsequent increase in consumption by river otters and, as such, suggest documenting the population status of green crabs in both rivers, and conducting additional predator-prey diet studies to gauge the potential for long-term biotic resistance of green crab populations.
Book Synopsis Evaluation of the Green Crab (Carcinus Maenas) Population Dynamics in Eastern Cape Breton by : Jared Tomie
Download or read book Evaluation of the Green Crab (Carcinus Maenas) Population Dynamics in Eastern Cape Breton written by Jared Tomie and published by . This book was released on 2008 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distribution and Biological Characteristics of European Green Crab, Carcinus Maenas, in British Columbia, 2006-2013 by : Graham E. Gillespie
Download or read book Distribution and Biological Characteristics of European Green Crab, Carcinus Maenas, in British Columbia, 2006-2013 written by Graham E. Gillespie and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessing Impacts of Green Crab (Carcinus Maenas) on the Abundance of American Lobster (Homarus Americaus) in Nature by : Mark Alan Wilcox
Download or read book Assessing Impacts of Green Crab (Carcinus Maenas) on the Abundance of American Lobster (Homarus Americaus) in Nature written by Mark Alan Wilcox and published by . This book was released on 2012 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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