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Common Bottlenose Dolphin (Tusriops truncatus) Habitat Utilization in a Complex, Estuarine Environment.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Common Bottlenose Dolphin (Tusriops truncatus) Habitat Utilization in a Complex, Estuarine Environment./
作者:	Cummings-Krueger, Anna Claire.
面頁冊數:	1 online resource (173 pages)
附註:	Source: Masters Abstracts International, Volume: 84-10.
Contained By:	Masters Abstracts International84-10.
標題:	Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30420009click for full text (PQDT)
ISBN:	9798379421618

Common Bottlenose Dolphin (Tusriops truncatus) Habitat Utilization in a Complex, Estuarine Environment.
Cummings-Krueger, Anna Claire.

Common Bottlenose Dolphin (Tusriops truncatus) Habitat Utilization in a Complex, Estuarine Environment. - 1 online resource (173 pages)

Source: Masters Abstracts International, Volume: 84-10.

Thesis (M.S.M.S.)--Savannah State University, 2023.

Includes bibliographical references

The Skidaway River Estuary (SRE) serves as a unique habitat for common bottlenose dolphins, due primarily to the complexity of the connected bodies of water. In addition to the frequently studied habitat parameters of temperature, salinity, and depth, the SRE also includes variability in physically complex metrics such as slope, creek width, river curvature, and habitat type. Common bottlenose dolphin distribution may be related to any number of these abiotic factors, as well as anthropogenic influences, specifically in relation to foraging. The purpose of this study was to spatially and seasonally evaluate the habitat utilization of the common bottlenose dolphins in the Skidaway River Estuary, GA. Boat-based surveys along designated transects throughout the SRE provided the 12+ years (2009-2021) of data collection used in this study. Data were spatially analyzed in ArcGIS 10.8.1 and statistically analyzed using three statistical approaches: Spearman's rank, Mantel test, and generalized additive models (GAMs). In summers, a greater number of SRE dolphins utilized straight, flat stretches of mid-to-wide-width rivers for foraging and open sounds for non-foraging. There was a higher number of foraging sightings within habitat characteristic of deep, sloped scours and high boat presence. The greatest numbers of non-foraging sightings were along the flat edges of river mouths connected to wide rivers or sounds in summers. The numbers of dolphins and sightings were widely distributed in winters, with no particular habitat attributes serving as significant. The summer results may be attributed to the seasonal summer influx of non-resident common bottlenose dolphins from adjacent estuarine habitats and the variability in habitat use between the visitors and the year-round residents of the SRE. The complexity metrics used in this study served to predict the overall distributions of dolphins and sightings, which added to our overall understanding of how the SRE dolphins utilize their environment.

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

Mode of access: World Wide Web

ISBN: 9798379421618Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Common bottlenose dolphinIndex Terms--Genre/Form:

542853
Electronic books.

Common Bottlenose Dolphin (Tusriops truncatus) Habitat Utilization in a Complex, Estuarine Environment.
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