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Articles 1 - 12 of 12
Full-Text Articles in Life Sciences
An Examination Of Tern Diet In A Changing Gulf Of Maine, Keenan Yakola
An Examination Of Tern Diet In A Changing Gulf Of Maine, Keenan Yakola
Masters Theses
The Gulf of Maine is a dynamic ecosystem with rapidly warming sea surface temperatures (SSTs), therefore it is vital to understand how species interactions vary over time and space. In chapter two, I quantify and compare dietary differences among four tern species, across seven islands in the region, over a 32-year period. Multivariate statistical analyses were employed to discern spatial and temporal differences in foraging ecology. Findings suggest there are significant differences between species and islands; however, only three prey species comprise the majority of chick diet for all terns and islands. The reliance on only a few prey items …
Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Brent S. Wise, Brett Molony
Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Brent S. Wise, Brett Molony
Fisheries research reports
A scientific workshop was held on 25th – 29th September 2017 to review available data for Australian herring (Arripis georgianus) and determine current stock status using the Department of Primary Industries and Regional Development’s (DPIRD) Risk-based Weight of Evidence Approach (Appendix 1). Recommendations for future monitoring and assessments required to reduce uncertainties and establish sustainable catch levels were also made.
Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Department Of Primary Industries And Regional Development, Western Australia
Australian Herring And West Australian Salmon Scientific Workshop Report, October 2017, Department Of Primary Industries And Regional Development, Western Australia
Fisheries research reports
No abstract provided.
Discerning Population Connectivity And Natal Origins Of Pacific Herring (Clupea Pallasi): Inferences On Population Structure From Otolith Chemistry, Wade Smith, Tony Pitcher, Margot Hessing-Lewis, Brian P.V. Hunt, Evgeny A. Pakhomov
Discerning Population Connectivity And Natal Origins Of Pacific Herring (Clupea Pallasi): Inferences On Population Structure From Otolith Chemistry, Wade Smith, Tony Pitcher, Margot Hessing-Lewis, Brian P.V. Hunt, Evgeny A. Pakhomov
Salish Sea Ecosystem Conference
Pacific herring, Clupea pallasi, undertake annual migrations between feeding and spawning grounds that link life stages, habitats, populations, communities, and ecosystems. However, movement patterns of these highly mobile fish are poorly understood. Declines in Pacific herring abundance and slow population recoveries in the absence of fishing pressure have elevated concerns over the status of this ecologically, economically, and culturally important species. Pacific herring spawn on substrate in nearshore habitats where eggs and larvae develop for approximately two weeks before hatching. Early development within discrete spawning grounds could facilitate the incorporation of distinctive chemical signatures within otoliths that could be used …
Salmon And Jellies And Herring, Oh My! Abiotic And Biotic-Dependent Trends In Abundance And Distribution Of Pelagic Critters In Skagit Bay Across 17 Years, Stuart Harold Munsch, Correigh M. Greene, Jason Hall
Salmon And Jellies And Herring, Oh My! Abiotic And Biotic-Dependent Trends In Abundance And Distribution Of Pelagic Critters In Skagit Bay Across 17 Years, Stuart Harold Munsch, Correigh M. Greene, Jason Hall
Salish Sea Ecosystem Conference
As a large fjord, the Salish Sea exhibits strong spatiotemporal variation in temperature and salinity due to various marine and freshwater inputs. These patterns are particularly evident in Skagit Bay where water conditions are influenced by marine inputs from Deception Pass and Saratoga Passage and seasonal pulses of fresh water from Skagit River. We investigated how abundance and community composition in pelagic surface waters of Skagit Bay varied from 2001-2017, and how temperature and salinity patterns can influence which species predominate in particular years. Data come from long-term monitoring of Skagit Bay using a Kodiak surface trawl that sweeps the …
Key Factors Influencing Change In Pacific Herring Populations: A Qualitative Network Model Approach, Tessa B. Francis
Key Factors Influencing Change In Pacific Herring Populations: A Qualitative Network Model Approach, Tessa B. Francis
Salish Sea Ecosystem Conference
Pacific herring are a foundational species in the Salish Sea, providing important cultural, social, economic, and ecological benefits throughout the ecosystem. While herring are common across the Salish Sea, patterns of their abundance in recent years vary spatially. Herring are subject to many factors that may influence their abundance and distribution, but there is no agreement on what the key factors are or, therefore, how to address local declines and support herring resilience. Here, we present results from a qualitative network model of the herring ecological system evaluating the relative support for the influence of different possible factors on herring …
How Effective Creosote-Treated Piling Removal Can Help Save A Cornerstone Species, Celina Abercrombie
How Effective Creosote-Treated Piling Removal Can Help Save A Cornerstone Species, Celina Abercrombie
Salish Sea Ecosystem Conference
An extensive body of scientific literature is available on the effects of polycyclic aromatic hydrocarbons (PAHs) on fish. Pacific herring are a cornerstone species of the Pacific Northwest food web. Herring populations fluctuate annually with some areas of the Puget Sound seeing increased spawning, while other areas experiencing declines. These fish spawn on seagrass, macroalgae, rocks and a variety of structures. Creosote-treated pilings are one type of spawning structure, which typically results in detrimental effects to fish eggs. With thousands of creosote pilings in our Puget Sound waters, a serious challenge exists for spawning herring. In 2017, the largest creosote-treated …
Alewives: Feast Of The Season, Catherine V. Schmitt
Alewives: Feast Of The Season, Catherine V. Schmitt
Catherine Schmitt
Alewives are sea-run, or diadromous, fish that spend most of their lives in the Atlantic Ocean but return as adults to coastal rivers in spring to spawn in freshwater streams and ponds. This article in Maine Boats, Homes, & Harbors magazine discusses the natural and cultural history of Maine's native runs of alewives and other sea-run fish.
The Case, Nancy Tancredi
A Bioenergetics-Based Population Dynamics Model Of Pacific Herring (Clupea Harengus Pallasi) Coupled To A Lower Trophic Level Nutrient–Phytoplankton–Zooplankton Model: Description, Calibration, And Sensitivity Analysis, Bernard A. Megrey, Kenneth A. Rose, Robert A. Klumb, Douglas E. Hay, Francisco E. Werner, David L. Eslinger, S. Lan Smithg
A Bioenergetics-Based Population Dynamics Model Of Pacific Herring (Clupea Harengus Pallasi) Coupled To A Lower Trophic Level Nutrient–Phytoplankton–Zooplankton Model: Description, Calibration, And Sensitivity Analysis, Bernard A. Megrey, Kenneth A. Rose, Robert A. Klumb, Douglas E. Hay, Francisco E. Werner, David L. Eslinger, S. Lan Smithg
United States Fish and Wildlife: Staff Publications
We describe an approach to dynamically couple a fish bioenergetics-based population dynamics model to the NEMURO lower trophic level nutrient–phytoplankton–zooplankton model. The coupled models, denoted NEMURO.FISH and configured for Pacific herring (Clupea harengus pallasii) on the west coast of Vancouver Island, are capable of simulating the daily dynamics of the lower trophic levels and the daily average weight and numbers of individual herring in each of 10 age classes over multiple years. New recruits to the herring population are added each June based on either constant recruitment or dynamic recruitment generated from an environmental Ricker spawner–recruitment relationship. The …
Records Of The State Of Maine Department Of Sea And Shore Fisheries, Herrings And Sardines – Report Of The Maine Sardine Industry, 1957, Maine Department Of Sea And Shore Fisheries
Records Of The State Of Maine Department Of Sea And Shore Fisheries, Herrings And Sardines – Report Of The Maine Sardine Industry, 1957, Maine Department Of Sea And Shore Fisheries
History of Maine Fisheries
Report of the Maine Sardine Industry comparing labor and dollar value statistics between sardine packing and other manufacturing industries, 1957.
Petition To Prohibit Seine Fishing, 1893, Tristram Griffin
Petition To Prohibit Seine Fishing, 1893, Tristram Griffin
History of Maine Fisheries
Petition by Tristram Griffin and 28 other citizens of Boothbay (Me.) to prohibit the use of purse or drag seines in the fishing of mackerel, herring, shad, porgies, and menhaden. Collection also includes document recording quintals of fish taken for the Schooners Constitution and Two Brothers.