A multi-scale analysis of the population ecology of a temperate reef fish
Using field experiments and descriptive analyses this study investigated the significance of larval settlement and post-settlement processes to populations of cunner, Tautogolabrus adspersus. At small spatial scales there was no relationship between the density of new recruits and the percent cover...
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
University of New Hampshire Scholars' Repository
1993
|
Subjects: | |
Online Access: | https://scholars.unh.edu/dissertation/1733 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2732&context=dissertation |
id |
ftuninhampshire:oai:scholars.unh.edu:dissertation-2732 |
---|---|
record_format |
openpolar |
spelling |
ftuninhampshire:oai:scholars.unh.edu:dissertation-2732 2023-05-15T17:19:37+02:00 A multi-scale analysis of the population ecology of a temperate reef fish Levin, Phillip S 1993-01-01T08:00:00Z application/pdf https://scholars.unh.edu/dissertation/1733 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2732&context=dissertation unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/dissertation/1733 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2732&context=dissertation Doctoral Dissertations Biology Ecology Agriculture Fisheries and Aquaculture Zoology text 1993 ftuninhampshire 2023-01-30T21:20:55Z Using field experiments and descriptive analyses this study investigated the significance of larval settlement and post-settlement processes to populations of cunner, Tautogolabrus adspersus. At small spatial scales there was no relationship between the density of new recruits and the percent cover of kelp, foliose algae and branching algae. Crustaceans and mussels were preferred found items of juvenile cunner, and significantly greater numbers of isopods, amphipods and newly settled mussels were present in patches where fish were present than in randomly selected patches. Experimental and correlative analyses demonstrated that variation in recruitment could not be explained by the presence of conspecifics. Manipulations of macroalgal structure showed that the distribution of fish was influenced by the algal habitat. The dispersion of macroalgae influenced the demography of cunner. Settlement was greater to randomly placed than to clumped habitats; however, no differences in recruitment between random and clumped habitat were detected. The magnitude of the change in recruit number between sampling dates did not differ between clumped and random habitats. There was no evidence of either density-dependent mortality or settlement. A larger scale study was conducted comparing the demography of cunner in Newfoundland and the Gulf of Maine. Greater numbers of adult fish were observed in Newfoundland, but higher numbers of juveniles and recruits were found in the Gulf of Maine. In the Gulf of Maine variation was pronounced at the site scale, while in Newfoundland variation was pronounced at both the site and location scales. Variation in recruitment was not expressed as subsequent variation in older age classes. There was no effect of topographic complexity on variation of densities of recruits or juveniles, but in Newfoundland a negative relationship between adults and topography was observed. Algal cover was not important in Newfoundland, but was important in the Gulf of Maine. Although there was consistently greater ... Text Newfoundland University of New Hampshire: Scholars Repository |
institution |
Open Polar |
collection |
University of New Hampshire: Scholars Repository |
op_collection_id |
ftuninhampshire |
language |
unknown |
topic |
Biology Ecology Agriculture Fisheries and Aquaculture Zoology |
spellingShingle |
Biology Ecology Agriculture Fisheries and Aquaculture Zoology Levin, Phillip S A multi-scale analysis of the population ecology of a temperate reef fish |
topic_facet |
Biology Ecology Agriculture Fisheries and Aquaculture Zoology |
description |
Using field experiments and descriptive analyses this study investigated the significance of larval settlement and post-settlement processes to populations of cunner, Tautogolabrus adspersus. At small spatial scales there was no relationship between the density of new recruits and the percent cover of kelp, foliose algae and branching algae. Crustaceans and mussels were preferred found items of juvenile cunner, and significantly greater numbers of isopods, amphipods and newly settled mussels were present in patches where fish were present than in randomly selected patches. Experimental and correlative analyses demonstrated that variation in recruitment could not be explained by the presence of conspecifics. Manipulations of macroalgal structure showed that the distribution of fish was influenced by the algal habitat. The dispersion of macroalgae influenced the demography of cunner. Settlement was greater to randomly placed than to clumped habitats; however, no differences in recruitment between random and clumped habitat were detected. The magnitude of the change in recruit number between sampling dates did not differ between clumped and random habitats. There was no evidence of either density-dependent mortality or settlement. A larger scale study was conducted comparing the demography of cunner in Newfoundland and the Gulf of Maine. Greater numbers of adult fish were observed in Newfoundland, but higher numbers of juveniles and recruits were found in the Gulf of Maine. In the Gulf of Maine variation was pronounced at the site scale, while in Newfoundland variation was pronounced at both the site and location scales. Variation in recruitment was not expressed as subsequent variation in older age classes. There was no effect of topographic complexity on variation of densities of recruits or juveniles, but in Newfoundland a negative relationship between adults and topography was observed. Algal cover was not important in Newfoundland, but was important in the Gulf of Maine. Although there was consistently greater ... |
format |
Text |
author |
Levin, Phillip S |
author_facet |
Levin, Phillip S |
author_sort |
Levin, Phillip S |
title |
A multi-scale analysis of the population ecology of a temperate reef fish |
title_short |
A multi-scale analysis of the population ecology of a temperate reef fish |
title_full |
A multi-scale analysis of the population ecology of a temperate reef fish |
title_fullStr |
A multi-scale analysis of the population ecology of a temperate reef fish |
title_full_unstemmed |
A multi-scale analysis of the population ecology of a temperate reef fish |
title_sort |
multi-scale analysis of the population ecology of a temperate reef fish |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
1993 |
url |
https://scholars.unh.edu/dissertation/1733 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2732&context=dissertation |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Doctoral Dissertations |
op_relation |
https://scholars.unh.edu/dissertation/1733 https://scholars.unh.edu/cgi/viewcontent.cgi?article=2732&context=dissertation |
_version_ |
1766094405278629888 |