Vorschläge zur multivariaten Strukturanalyse varianzreicher Tiergemeinschaften : am Beispiel von Makroinvertebraten-Zönosen landwirtschaftlicher Fließgewässer in Südostniedersachsen
type: CreativeWork
description: The present study investigates the statistical options for separating macroinvertebrate communities in a zoogeographical way. The communities investigated inhabit three different natural landscapes. 145 taxa were collected with the so-called SURBER-sampler-method at 40 sampling sites in the Hanover area (Germany) during five periods, each lasting six-weeks, during autumn 1998 until spring 2000. In addition to these samplings, data of 52 abiotic parameters were gathered. In order to reveal relevant ecological interrelationships between the abiotic and biotic data it was necessary to apply multivariate methods, including the Two-Way Indicator Species Analysis, both the direct and indirect form of the Correspondence Analysis, the Principal Components Analysis and derived from that the Principal Response Curve. Furthermore, there was an additional need to use multivariate methods as a result of the data. The collected data exhibited a large variance, as many outdoor samples often do. The study begins with a description of its genesis. Several questions are raised concerning the structure of the communities investigated and the existence of 'bioareas'. Next, a presentation of several multivariate statistical tools is provided, since the major task of the present study was their use in an ecologically meaningful way. The problem of the correct application of multivariate tools to community data is demonstrated und discussed with reference to the choice of abundance classes. Then the investigated landscape areas are described. Criteria for the choice of sample sites, the used materials, and methods of data collection, as well as the characteristics of the data are discussed. The first results are described using simple univariate means to show the main aspects of data variability. They give an overview of the structural surroundings of the sample sites and the temporal, spatial, and structural diversity of the macro-invertebrate samples. Thirty-three from 145 taxa were def…
abstract: The present study investigates the statistical options for separating macroinvertebrate communities in a zoogeographical way. The communities investigated inhabit three different natural landscapes. 145 taxa were collected with the so-called SURBER-sampler-method at 40 sampling sites in the Hanover area (Germany) during five periods, each lasting six-weeks, during autumn 1998 until spring 2000. In addition to these samplings, data of 52 abiotic parameters were gathered. In order to reveal relevant ecological interrelationships between the abiotic and biotic data it was necessary to apply multivariate methods, including the Two-Way Indicator Species Analysis, both the direct and indirect form of the Correspondence Analysis, the Principal Components Analysis and derived from that the Principal Response Curve. Furthermore, there was an additional need to use multivariate methods as a result of the data. The collected data exhibited a large variance, as many outdoor samples often do. The study begins with a description of its genesis. Several questions are raised concerning the structure of the communities investigated and the existence of 'bioareas'. Next, a presentation of several multivariate statistical tools is provided, since the major task of the present study was their use in an ecologically meaningful way. The problem of the correct application of multivariate tools to community data is demonstrated und discussed with reference to the choice of abundance classes. Then the investigated landscape areas are described. Criteria for the choice of sample sites, the used materials, and methods of data collection, as well as the characteristics of the data are discussed. The first results are described using simple univariate means to show the main aspects of data variability. They give an overview of the structural surroundings of the sample sites and the temporal, spatial, and structural diversity of the macro-invertebrate samples. Thirty-three from 145 taxa were def…
author: Pantel, Stefan
language: ger
keywords: info:eu-repo/classification/ddc/570, Biowissenschaften, Biologie, multivariat, Fließgewässer, Makroinvertebraten, Tiergemeinschaften, Zönosen, Strukturanalyse, Varianz, Südostniedersachsen
date published: 2003
date modified: 2026-07-30T19:43:10Z
provider: RWTH Aachen University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Publikationsserver der RWTH Aachen University