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From Individuals to Populations : = The Impact of Climate Change on the Physiology and Ecology of Northern Blue Crabs (Callinectes sapidus).

Record Type:	Electronic resources : Monograph/item
Title/Author:	From Individuals to Populations :/
Reminder of title:	The Impact of Climate Change on the Physiology and Ecology of Northern Blue Crabs (Callinectes sapidus).
Author:	Molina, Adelle.
Description:	1 online resource (186 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-02, Section: B.
Contained By:	Dissertations Abstracts International84-02B.
Subject:	Biological oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29161610click for full text (PQDT)
ISBN:	9798837532825

From Individuals to Populations : = The Impact of Climate Change on the Physiology and Ecology of Northern Blue Crabs (Callinectes sapidus).
Molina, Adelle.

From Individuals to Populations :The Impact of Climate Change on the Physiology and Ecology of Northern Blue Crabs (Callinectes sapidus). - 1 online resource (186 pages)

Source: Dissertations Abstracts International, Volume: 84-02, Section: B.

Thesis (Ph.D.)--State University of New York at Stony Brook, 2022.

Includes bibliographical references

Important and valuable fishery species are changing their distributions in response to warming by moving poleward or deeper. To effectively manage impacted fisheries, it is important to understand how species' physiological responses to changing environmental conditions will scale up to the population level. Warmer temperatures can impact organisms in different complex physiological ways, but for populations of species near their poleward range edges whose extent is limited by winter temperatures, warmer winters can offer opportunities to exploit new habitats or thrive in fringe habitats. This dissertation uses experimental data to develop statistical models that can quantify the potential impacts of climate change on blue crab (Callinectes sapidus) populations from habitats that are near the northernmost range edge for this species with the goal of providing guidance for proactive fishery management. First, I studied environmentally dependent winter mortality in the lab to develop a survivorship model that can predict winter mortality from environmental data and crab size. These results prompted an exploratory analysis to determine whether osmoregulation was a mechanistic cause of the observed winter mortality by assessing the effect of temperature and salinity on the osmoregulatory patch in gill tissues. I then parameterized a bioenergetic model for northern blue crab to estimate seasonal growth. These two models were used together to simulate the impacts of 2°C of warming on blue crab winter mortality, seasonal growth, and ultimately recruitment to the fishery. Finally, I used bottom trawl survey data from two Long Island estuaries and one in Rhode Island to assess regional trends in catch and analyze the Great South Bay stock. Together our results suggest that blue crab populations in New York estuaries and others further north are likely to increase population growth rates and abundance in response to warming via enhanced growth and reduced winter mortality, but the potential opportunity created by climate change can also increase susceptibility to fishing. Ultimately, research and monitoring should continue because the future of northern blue crab populations will also depend on fishing, biological interactions, environmental variability, storms, and other factors that were outside the scope of this dissertation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798837532825Subjects--Topical Terms:

2122748
Biological oceanography.
Subjects--Index Terms:

Northern Blue CrabsIndex Terms--Genre/Form:

542853
Electronic books.

From Individuals to Populations : = The Impact of Climate Change on the Physiology and Ecology of Northern Blue Crabs (Callinectes sapidus).
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520 $a Important and valuable fishery species are changing their distributions in response to warming by moving poleward or deeper. To effectively manage impacted fisheries, it is important to understand how species' physiological responses to changing environmental conditions will scale up to the population level. Warmer temperatures can impact organisms in different complex physiological ways, but for populations of species near their poleward range edges whose extent is limited by winter temperatures, warmer winters can offer opportunities to exploit new habitats or thrive in fringe habitats. This dissertation uses experimental data to develop statistical models that can quantify the potential impacts of climate change on blue crab (Callinectes sapidus) populations from habitats that are near the northernmost range edge for this species with the goal of providing guidance for proactive fishery management. First, I studied environmentally dependent winter mortality in the lab to develop a survivorship model that can predict winter mortality from environmental data and crab size. These results prompted an exploratory analysis to determine whether osmoregulation was a mechanistic cause of the observed winter mortality by assessing the effect of temperature and salinity on the osmoregulatory patch in gill tissues. I then parameterized a bioenergetic model for northern blue crab to estimate seasonal growth. These two models were used together to simulate the impacts of 2°C of warming on blue crab winter mortality, seasonal growth, and ultimately recruitment to the fishery. Finally, I used bottom trawl survey data from two Long Island estuaries and one in Rhode Island to assess regional trends in catch and analyze the Great South Bay stock. Together our results suggest that blue crab populations in New York estuaries and others further north are likely to increase population growth rates and abundance in response to warming via enhanced growth and reduced winter mortality, but the potential opportunity created by climate change can also increase susceptibility to fishing. Ultimately, research and monitoring should continue because the future of northern blue crab populations will also depend on fishing, biological interactions, environmental variability, storms, and other factors that were outside the scope of this dissertation.
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