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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.
11

Master plan of the Mbaracaju nature reserve of Paraguay

Fernandez Beraud, Leticia January 1992 (has links)
This creative project consists of the design of a Master Plan for the Mbaracaju Forest Reserve, a 143,000 acre site in eastern Paraguay which is part of the devastated Atlantic Forest , an area requiring urgent conservation action. This creative project adresses site inventory and analysis, programming, land uses, site specific facility development guidelines, and three Master Plan Alternatives. The Master Plan seeks to support environmental preservation, sustainable development, and environmental education. The hypothesis of this project is that preservation and environmentally sound use of the Reserve are possible through a Master Plan that responds to the sensitivity of the various areas and its management, and to an activities program oriented towards global preservation. The Incorporation of the traditional inhabitants of the land as active participants in the Master Plan will serve as an example for Paraguay and for the world. This Master Plan, which will promote environmental preservation and biological diversity, will benefit the inhabitants of the Reserve, of Paraguay, and from around the world. For this report to the Graduate Office at Ball State University there are included the major aspects of the Master Plan. It is important to clarify that the whole report, which has 200 pages, is available in the lybrary of the College of Architecture and Planning. / Department of Landscape Architecture
12

Human impacts on Australian sea lions, Neophoca cinerea, hauled out on Carnac Island (Perth, Western Australia) : implications for wildlife and tourism management /

Orsini, Jean-Paul. January 2004 (has links)
Thesis (M. Marine Sci.)--Murdoch University, 2004. / Thesis submitted to the Division of Science and Engineering. Bibliography: leaves 99-112.
13

An investigation of the role of Mai Po Nature Reserve from a conservation and education perspective /

Chung, Hung-fat. January 2000 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 61-64).
14

Effectiveness of planning and management on Ramsar site in Hong Kong /

Lau, Lai-ki. January 2000 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 134-137).
15

The ecology of mudskippers (Pisces: Periophthalmidae) at the Mai Po Marshes Nature Reserve, Hong Kong /

Chan, Ka-yi, Phoebe. January 1989 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1990.
16

Human impacts on Australian sea lions, Neophoca cinerea, hauled out on Carnac Island (Perth, Western Australia) : implications for wildlife and tourism management /

Orsini, Jean-Paul. January 2004 (has links)
Thesis (M. Marine Sci.)--Murdoch University, 2004. / Thesis submitted to the Division of Science and Engineering. Includes bibliographical references (leaves 99-112).
17

Prospects for sustained harvesting of mopane (Colophospermum mopane) on the Venetia Limpopo Nature Reserve and its implications for browsing ungulates

Cunningham, Peter Low 03 1900 (has links)
Thesis (MSc) -- Stellenbosch University, 1996. / ENGLISH ABSTRACT:Principle objectives of this study were to investigate the ecological feasibility of sustained utilization of mopane, using Venetia Limpopo Nature Reserve as a pilot study area. The study was limited to three different mopane dominated vegetation types on the reserve with most research being conducted in C.mopane woodland. Results can be summarized as follows: 1. Colophospermum mopane is ubiquitous on VLNR. 2. C.mopane woodland has the deusest mopane growth of the three vegetation types and highest densities are found on soils (OaB, VaB, Du, SwB & VaA) in association with C.mopane woodland. There seems to be a correlation between mopane density and soil type. 3. Largest mopane trees according to height and circumference were found in C.mopane/C.apiculatum open woodland. There is no significant difference between height and circumference on different soil types. 4. Most senility occurs in C.mopane shrubland and there is a significant difference in senility between mopane associated with different soils on which this vegetation type occurs. 5. Oldest average ages per tree were fo•.md in C.mopane woodland while growth rates were fastest in C.moparse!C.apiculatum open woodland. 6. There is a significant positive correlation between total and charcoal weights for mopane. Total and charcoul weights per tree were highest for C.mopane/C.apiculatum open woodland, while weights per hectare were highest for C.mopane woodland. Soils could not positively be associated with this trend. 7. Mopar.e lends itself to harvesting, especially C.mopane ••10odland in the Endora, Lizzulea and Hilda areas. Winter months seem to be most desirable for harvesting activities. Hand felling in elongated patches (increases ecotone boundary) is recommended where labour is cheap. A harvesting strategy of between 25% and 50% would make the operation economically viable and ecologically acceptable. An optimum harvesting rate of 27% is suggested by a harvesting model developed specifically for this mopane data. 8. Total herbivore densities, distribution and species proportions can be expected to change following bush clearing. Habitat for grazers should increase due to an increased grass production. Habitat for browsers should not be influenced much. Effect of noise and human disturbance during harvesting, especially for elephants is negligible, as hunting activities already take place on VLNR. 9. Grass production would increase but quality should decrease after harvesting, due to an increase in low quality opportunistic species, especially if soil disturbance takes place. Grass quality is best in association with herbaceous species such as Salvadora angustifolia. Carrying capacity for grazers should increase after harvesting as a result of habitat change and grass biomass increase. 10. Total browse production would decrease but leaf biomass should increase on remaining trees as they have improved water availability due to Q lack of intra­ specific competition. Higher seed production and more flowering takes place at lower tree densities. Greatest advantages for browsers after harvesting, is the fact that leaves become senescent later in autumn and that spring leaf flush takes place earlier thus prolonging bro\'se availability. / AFRIKAANSE OPSOMMING:Die hoof doelwitte van hierdie studie was om te bepaal wat die invloed van die oes van mop nie op die ekologie sou wees as dit op 'n volgehoue basis plaasvind en tot w•atter mate mopanie geskik is vir hou skoolvervaardiging. Die navorsing is op die Venetia Limpopo Natuureservaat in slegs drie van die belangrikste mopanie veldtipes uitgevoer met die oorgrote meerderheid van die navorsing in die C.mopane bosveld. Die resultate van die studie kan soos volg opgesom word: 1. Colophospermum mopane is alomteenwoordig op die VLNR. 2. Die C.mopane bosveld het die hoogste digtheid van al drie veldtipes en word ook geassosieer met sekere grondtipes (OaB, VaB, Du, SwB & VaA) wat eie is aan hierdie spesifieke veldtipe. Daar blyk 'n korrelasie te wees tussen die digthede van mopanie en grondtipes. 3. Die grootste mopanie borne, ten opsigte van hnogte en omtrek, word in die C.mopane/C.apiculatum oop bosveld aangetref. Daar is nie 'n beduidende verskil tussen die hoogte en omtrek van mopanie op die verskillende grondtipes nie. 4. Die C.mopane struikveld toon die meeste seniliteit ten opsigte van die persentasie kruin dood. Daar is 'n definitiewe aanduiding dat seniliteit ooreenstem met sekere grondtipes veral met betrekking tot die mopanie struikveld. 5. Die C.mopane bosveld het gemiddeld die oudste borne terwyl die C.mopane/C.apiculatum oop bosveld die vinnigste groeikoers toon. Die bogenoemde feite het 'n ver0and met die grondtipes. 6. Daar is 'n posltiewe korrelasie tussen die totale gewig en die houtskoolgewig van mopanle. Die S\vaarste borne is in die C.mopane!C.apiculatum oop bosveld aangetref, terwyl die swaarste gewig per hektaar in die C.mopane bosveld aangetref is. Gewig kon nie met grondt pes gekorreleer word nie. 7. Die mopanie in die C.mopane bosveld is geskik vir die oes vir houtskool, veral in die Endora, Lizzulea en Hilda gebiede. Dit is raadsaam om die borne in verlengde stroke per hand af te kap (vergroot die ekotoongebied), veral waar arbeid goedkoop is. 'n Oesstrategie van tussen 25% en 50% vir mopanie word aanbeveel om dit ekonomies en ekologies aanvaarbaar te maak. 'n Optimum oesstrategie van 27% word aanbeveel deur 'n oes model wat spesifiak vir hierdie mopane data opgestel is. 8. Daar kan verwag word dat na die oes van mopanie die getalle asook verspreidingspatrone van alle hoefdierspesies kan verander. 'n Voordeel van lae mopanie digthede is dat die verspreiding van die blaarbiomassa ewerediger oor die seisoene sal geskied. Grasvreters word bevoordeel vanwee die verandering in habitat. Die effek van geraas en ander oesbedrywighede op olifante behoort klein te wees aangesien jagaktiwiteite alreeds op diereservaat toegepas word en hulle redelik gewoond daaraan behoort te wees. 9. Grasproduksie behoort toe te neem terwyl die kwaliteit daarvan afneem as gevolg van opportunistieslae kwaliteit grasspcsies wat toeneem na die oes van mopanie, veral as die grand tydens oesaktiwiteite versteur word. Die beste kwaliteit gras word in assosiasie met kruidagtige spesies, veral Salvadora angustifolia, gevi.nd. As gevolg van die verandering in habitat asook die toename in grasbiomassa neem die drakrag vir grasvreters na die oes an mopanietoe. 10. Di.e totale blaarbi.)massa behoort na die oes van mopanie af te neem, maar behoort terselfdertyd op die oorblywende borne as gevolg van die afname in kompetisie vi= watr en anrler natuurlike hulpbronne toe te neem. Hoer persentasies blomvorming en saadproduksie vind by laer boomdigthede plaas. Die grootste enkele voordeel vir blaarvreters, na die oes van mopanie, is die feit dat die blare later in die herfs afval en vroeer in die lente uitbot en dus die voedselbeskikbaarheid vir blaarvreters verleng.
18

Plži Přírodní rezervace Oheb / Gastropods of NR Oheb.

KADAVÁ, Jana January 2011 (has links)
This work was the processing of existing data from Culek, Brabenec and Juřičková. Mapping of a semiquantitative abundances of gastropods in Oheb Nature Reserve, as well as developing a list of species inventory and assessment of their habitat preferences, particularly with reference to a particular forest type. Regular monitoring helps in assessing the status and trends of populations and the entire reservation.
19

Vegetation degradation gradients and ecological index of key grass species in the south-eastern Kalahari South Africa

Veldsman, Stephan Gerhardus 11 August 2009 (has links)
An ecological assessment of the vegetation was conducted in the south-eastern part of the Kalahari. Detailed classification of the vegetation of Witsand Nature Reserve to determine small scale plant communities for a Nature Reserve management plan – 44 Braun-Blanquet plots revealed 7 detailed plant communities. One hundred and twenty six (126) sample plots, making up 45 sites, were used for the TWINSPAN classification, refined by Braun-Blanquet procedures, illustrated in a dendrogram, revealed 3 broad plant communities. A description of the communities is given and a vegetation map of the study area is provided. The step-point method was used and data collected at each sample plot in such a way that different degradation stages could be identified, an ordination technique (multivariate analytical procedures) was used to define the grazing gradient. Species abundance curves were statistically fitted to the grazing gradient and used to classify the species objectively into categories. Ecological index values were determined for each of the significant species within each community. Copyright / Dissertation (MSc)--University of Pretoria, 2009. / Plant Science / unrestricted
20

Classification and dynamics of the forest vegetation of Hluhluwe Nature Reserve, Kwa Zulu-Natal

West, Adam 15 April 2020 (has links)
The forests of Hluhluwe Nature Reserve, Kwa Zulu-Natal, were examined to determine composition, grain, classification, dynamics and conservation value. Field sampling took the form of recording DBH for all species in twenty-one 0.04 ha circular plots, walking 5-metre wide transects in mature and marginal forest to record size-classes and analysis of twenty gaps. Data were analysed by the multivariate programs, TWINSPAN and CANOCO. The composition of the canopy and subcanopy is distinct. Four canopy and two subcanopy communities can be detected. Community succession in the mature forest takes the form of almost random replacement of canopy trees through two subcanopy communities. Size-class distributions indicate a prevalence of shade-intolerant species. This forest is deemed to be coarse-grained and can be classified as coastal scarp forest. Comparisons with other forests shows Hluhluwe to have slightly above average species richness. A removal of anthropogenic disturbance by the creation of the reserve may have resulted in present forest canopy structure. Management for conservation of species diversity should encourage disturbance. There is potential for harvesting of certain shadetolerant species by local communities. This forest is a pristine fragment of a rapidly diminishing vegetation type and efforts should be made to conserve its entire expanse, within Hluhluwe Nature Reserve, in order to prevent species loss.

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