Analysis of the ecological evolution of an area in the Setubal Peninsula (Apostiça) caused by changes in land use patterns

Quinta-Nova, L.C.

Publication

Analysis of the ecological evolution of an area in the Setubal Peninsula (Apostiça) caused by changes in land use patterns

1998Conference object

dc.contributor.author	Quinta-Nova, L.C.
dc.date.accessioned	2013-06-11T15:29:07Z
dc.date.available	2013-06-11T15:29:07Z
dc.date.issued	1998
dc.description.abstract	The aim of the study was to analyse the evolution of land use patterns and environmental functions in Apostiça (Setubal Peninsula, Portugal). The study area was chosen for study because it serves as a dynamic model of land use modification, while simultaneously plays an important role in connecting habitats of great ecological value. The year 1966 was considered the starting point (base year) for the modifications, as that year marks the opening of a bridge over the Tagus River and the beginning of a direct traffic connection between Lisbon and the Setubal Peninsula. A structural characterisation and analysis of the main elements belonging to the overall ecological structure was completed for each year identified in the study in order to analyse the modification of the biological structures in the study area. Three indices were tested as measures to describe different proprieties of the landscape, the habitat layers index (Short 1988), the diversity index originated in information theory (Shannon and Weaver 1962) and the landscape contrast index (Romme et al, 1982; Hoover et al. 1991). The result of the application of the habitat layers index (Short 1988) indicates that this index could be useful to analyse de changes in biotope quality. The agricultural land use units abandoned, are well identified by a decrease of the habitat layers index. To study the structural diversity of the landscape was applied a diversity index originated in information theory (Shannon and Weaver 1962). That index gives information about the degree of heterogeneity of the land forms and vegetation cover belonging to a land use unit. The mapping of the Shannon index could be important in order to analyse the natural and semi-natural structures. For artificial structures the results are not so correct, and was difficult to establish a relation between the land use quality and its structure. The mapping of the landscape contrast index could be useful to identify potential corridors for species flows across the landscape.	por
dc.identifier.citation	QUINTA-NOVA, L.C. (1998) - Analysis of the ecological evolution of an area in the Setúbal Peninsula (Apostiça) caused by changes in land use patterns. 1.º Encontro Nacional de Ecologia da Paisagem. Montemor-o-Novo, 25 a 28 de Março.	por
dc.identifier.uri	http://hdl.handle.net/10400.11/1902
dc.language.iso	eng	por
dc.peerreviewed	no	por
dc.relation	Projeto “Análise da Evolução de uma Área da Península de Setúbal na Sequência de um Processo de Alteração de Uso”. Financiado pelo Programa Estímulo à Investigação no Domínio do Ordenamento do Território e do Desenvolvimento Urbano da DGOTDU	por
dc.subject	Landscape ecology	por
dc.subject	Land use change	por
dc.subject	Ecological evaluation	por
dc.subject	Setubal Peninsula	por
dc.title	Analysis of the ecological evolution of an area in the Setubal Peninsula (Apostiça) caused by changes in land use patterns	por
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Montemor-o-Novo	por
oaire.citation.title	1.º Encontro Nacional de Ecologia da Paisagem	por
person.familyName	Quinta-Nova
person.givenName	Luís
person.identifier.ciencia-id	7E1C-426F-DCFF
person.identifier.orcid	0000-0002-8464-7527
person.identifier.rid	O-2888-2014
person.identifier.scopus-author-id	36094927600
rcaap.rights	openAccess	por
rcaap.type	conferenceObject	por
relation.isAuthorOfPublication	f0595f24-cf61-4057-b388-e919e88a0fb4
relation.isAuthorOfPublication.latestForDiscovery	f0595f24-cf61-4057-b388-e919e88a0fb4