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Insect Declines, Population Variabil...

Montgomery, Graham Allen,

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Insect Declines, Population Variability, and the Consequences for Insectivorous Birds /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Insect Declines, Population Variability, and the Consequences for Insectivorous Birds // Graham Allen Montgomery.
Author:	Montgomery, Graham Allen,
Description:	1 electronic resource (184 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-09, Section: B.
Contained By:	Dissertations Abstracts International86-09B.
Subject:	Ecology. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31847604
ISBN:	9798310147126

Insect Declines, Population Variability, and the Consequences for Insectivorous Birds /
Montgomery, Graham Allen,

Insect Declines, Population Variability, and the Consequences for Insectivorous Birds /Graham Allen Montgomery. - 1 electronic resource (184 pages)

Source: Dissertations Abstracts International, Volume: 86-09, Section: B.

Recent reports of widespread insect declines have sparked conservation concern for both insects and insectivorous bird populations in North America and beyond, since the magnitude of declines and their effects remain unclear. Here, I present research that aims to inform population trends and linkages for these closely connected groups, by bringing together data from biological resurveys at local scales, and large scale literature synthesis and time-series datasets. In Chapter 1, I first present an overview of insect declines, which focuses on key knowledge gaps and challenges for understanding insect declines. Next, I present research proposing that insect monitoring efforts can benefit from increased methods alignment with other programs, helping multiply the usefulness of data and forming the basis for insect monitoring networks. In Chapter 2, I bring together 4000+ insect population time series to demonstrate that insect population variability is higher than that in vertebrate taxa. I then characterize patterns in this population variability across geographic traits (latitude and biome), time series traits (duration and start date) and species size, finding higher variability at higher latitudes, for smaller species, and for older, shorter time series, which can help inform population trend estimation and extinction risk assessments. In Chapter 3, I present results from a paired, bird-insect biological resurvey from Great Smoky Mountains National Park, TN, U.S.A., where myself and others revisited sites originally surveyed in the late 1940s to collect data on bird and insect community change. Because this protected area serves as a refuge from some anthropogenic pressures (e.g., habitat loss and light pollution), but is still vulnerable to others (e.g., invasive pests and climate change), it serves as a useful natural laboratory for evaluating community change. Using Bayesian n-mixture modeling to account for imperfect detection, I find that populations of many bird species have declined markedly since the 1940s, and that insect communities have declined at some sites but increased at others. Changes in the two communities are correlated, and likely driven by the combination of habitat change and climate change.

English

ISBN: 9798310147126Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Evidence synthesis

Insect Declines, Population Variability, and the Consequences for Insectivorous Birds /
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500 $a Source: Dissertations Abstracts International, Volume: 86-09, Section: B.
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520 $a Recent reports of widespread insect declines have sparked conservation concern for both insects and insectivorous bird populations in North America and beyond, since the magnitude of declines and their effects remain unclear. Here, I present research that aims to inform population trends and linkages for these closely connected groups, by bringing together data from biological resurveys at local scales, and large scale literature synthesis and time-series datasets. In Chapter 1, I first present an overview of insect declines, which focuses on key knowledge gaps and challenges for understanding insect declines. Next, I present research proposing that insect monitoring efforts can benefit from increased methods alignment with other programs, helping multiply the usefulness of data and forming the basis for insect monitoring networks. In Chapter 2, I bring together 4000+ insect population time series to demonstrate that insect population variability is higher than that in vertebrate taxa. I then characterize patterns in this population variability across geographic traits (latitude and biome), time series traits (duration and start date) and species size, finding higher variability at higher latitudes, for smaller species, and for older, shorter time series, which can help inform population trend estimation and extinction risk assessments. In Chapter 3, I present results from a paired, bird-insect biological resurvey from Great Smoky Mountains National Park, TN, U.S.A., where myself and others revisited sites originally surveyed in the late 1940s to collect data on bird and insect community change. Because this protected area serves as a refuge from some anthropogenic pressures (e.g., habitat loss and light pollution), but is still vulnerable to others (e.g., invasive pests and climate change), it serves as a useful natural laboratory for evaluating community change. Using Bayesian n-mixture modeling to account for imperfect detection, I find that populations of many bird species have declined markedly since the 1940s, and that insect communities have declined at some sites but increased at others. Changes in the two communities are correlated, and likely driven by the combination of habitat change and climate change.
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590 $a School code: 0031
650 4 $a Ecology. $3 516476
650 4 $a Conservation biology. $3 535736
650 4 $a Entomology. $3 615844
653 $a Evidence synthesis
653 $a Ornithology
653 $a Population ecology
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690 $a 0408
690 $a 0353
710 2 $a University of California, Los Angeles. $b Biology 0123. $e degree granting institution. $3 3825831
720 1 $a Tingley, Morgan W. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-09B.
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791 $a Ph.D.
792 $a 2025
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31847604