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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

The effect of spatial scale on the use of biodiversity surrogates and socio-economic criteria in systematic conservation assessments /

Payet, Karine. January 2007 (has links)
Thesis (MSc)--University of Stellenbosch, 2007. / Bibliography. Also available via the Internet.
272

Sustainability and biodiversity the impact, alternative design and prospects of restoration of channelized lowland streams in Hong Kong /

Chan, Pui-lok, Bosco. January 2001 (has links)
Thesis (Ph.D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 325-365) Also available in print.
273

Effects of deforestation and riparian buffers on lotic communities in southeastern Costa Rica : implications for biodiversity conservation in tropical streams /

Lorion, Christopher M. January 1900 (has links)
Thesis (Ph. D., Natural Resources)--University of Idaho and Centro Agronómico Tropical de Investigación y Enseñanza, December 2007. / Major professors: Brian Kennedy and Celia Harvey. Includes bibliographical references. Also available online (PDF file) by subscription or by purchasing the individual file.
274

Oak regeneration in former crop fields in the Missouri river floodplan /

Shaw, Gordon W. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 111-117). Also available on the Internet.
275

Biodiversity and ecosystem processes in heterogeneous environments /

Dyson, Kirstie Elizabeth. January 2008 (has links)
Thesis (Ph.D.) - University of St Andrews, May 2008.
276

Exploring the relationship between natural enemy biodiversity and herbivore suppression

Straub, Cory Severen, January 2006 (has links) (PDF)
Thesis (Ph. D.)--Washington State University, December 2006. / Includes bibliographical references.
277

Decision support systems for forest biodiversity management : a review of tools and an analytical-deliberative framework for understanding their successful application /

Gordon, Sean N. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 217-229). Also available on the World Wide Web.
278

Oak regeneration in former crop fields in the Missouri river floodplan

Shaw, Gordon W. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 111-117). Also available on the Internet.
279

The bee fauna of an old field site in southern Ontario, revisited after 34 years : a case for change /

Grixti, Jennifer C. January 2004 (has links)
Thesis (M.Sc.)--York University, 2004. Graduate Programme in Biology. / Typescript. Includes bibliographical references (leaves 47-68). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url%5Fver=Z39.88-2004&res%5Fdat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11805
280

Levantamento da entomofauna em sítios florestais em recuperação e em um fragmento de floresta natural em Botucatu, SP

Leitão-Lima, Patrícia da Silva [UNESP] 02 1900 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:28:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-02Bitstream added on 2014-06-13T19:16:46Z : No. of bitstreams: 1 leitaolima_psl_me_botfca.pdf: 278109 bytes, checksum: 27548222218389449ab80c8ec050f943 (MD5) / O trabalho teve por objetivo avaliar a comunidade de insetos em três sítios degradados sob processo de recuperação (sítios 1, 2 e 3) e um fragmento de floresta nativa na região de Botucatu, SP. O levantamento das espécies de insetos foi realizado quinzenalmente no período de maio de 2000 a maio de 2001, utilizando-se uma armadilha luminosa por área estudada. As espécies de insetos coletadas com maior freqüência tiveram sua flutuação populacional representada graficamente e a caracterização da comunidade encontrada foi feita pelos seguintes índices faunísticos: freqüência, abundância, diversidade, equitatividade e similaridade para Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera e demais ordens encontradas. Foi observada baixa densidade de indivíduos de insetos coletados no fragmento de mata em relação aos demais sítios. O sítio com menor desenvolvimento das árvores foi o que mais se distanciou em número de indivíduos do fragmento de mata. Foi coletado um total de 876 espécies e 15.332 indivíduos de insetos, sendo a ordem Lepidoptera responsável por 44,03% do total de indivíduos e de 80,25% das espécies coletadas, com maior número para as famílias Noctuidae e Arctiidae, principalmente nas áreas com recuperação mais lenta. As densidades de espécies de Geometridae e Saturniidae foram superiores no fragmento de mata. Pelo índice de diversidade de Shannon-Weaver foi verificada maior diversidade de lepidópteros no fragmento de mata e menor diversidade no sítio 2. O mesmo resultado foi verificado para Coleoptera e Hymenoptera. Hemiptera-Heteroptera e demais ordens de insetos apresentaram maior diversidade no fragmento de mata e o sítio 1 foi a área alterada com menor diversidade... / The work aimed to evaluate the insect community in three degraded sites under recovery process (sites 1, 2 and 3) and the native forest fragment in region of Botucatu, SP, Brazil The insects monitoring was accomplished bi-weekly during May, 2000 to May 2001, using a light trap for each studied area. The insect species collected with higher frequency had its populational dynamic represented graphically and community was characterizated using the following faunistic indexes: frequency, abundance, diversity, equitability and similarity for Lepidoptera, Coleoptera, Hemiptera-Heteroptera, Hymenoptera and other orders. It was observed individuals of insects with low density collected in the native fragment regarding the other sites. The sites with smaller development trees showed reduced number of individuals in comparision with native fragment. It was collected 876 species of insects and 15332 individuals, with order Lepidoptera representing 44,03% from the individuals total and of 80,25% of the collected species, with larger number for the families Noctuidae and Arctiidae, mostly in the areas with slower recovery. The species densities of Geometridae and Saturniidae were superior in native forest fragment. By the Shannon-Weaver diversity index was verified larger lepidopterous diversity in the native forest and smaller diversity in the site 2. The same result was verified for Coleoptera and Hymenoptera. Hemiptera-Heteroptera and insects of other orders presented larger diversity in the native forest fragment and the site 1 was the area changed with smaller diversity. The degraded sites in recovery process had very low similarity with the native forest fragment for Lepidoptera and for the other insect orders...(Complete abstract, click electronic access below)

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