Management implications inferred from the multivariate analysis of vadose zone chemical variables in Las Tablas de Daimiel National Park (Spain)

Geoderma ◽  
2011 ◽  
Vol 162 (3-4) ◽  
pp. 365-377 ◽  
Author(s):  
Héctor Aguilera ◽  
Luis Moreno ◽  
María Emilia Jiménez-Hernández ◽  
Silvino Castaño ◽  
Almudena de la Losa
Keyword(s):  
Multivariate Analysis ◽  
Vadose Zone ◽  
National Park ◽  
Management Implications

Natural Hybridization and Morphometric Relationships Between Three Mallee Eucalypts in the Fitzgerald River National Park, W.A

1978 ◽  
Vol 26 (3) ◽  
pp. 319 ◽  
Author(s):  
SD Hopper ◽  
DJ Coates ◽  
AH Burbidge
Keyword(s):  
Multivariate Analysis ◽  
National Park ◽  
Parental Species ◽  
Natural Hybridization ◽  
Reproductive Parameters ◽  
Sympatric Population ◽  
Sympatric Populations

The suspected occurrence of natural hybridization between Eucalyptus preissiana Schau, and E. Buprestium F. Muell, near West Mount Barren was investigated through a study of morphometric and reproductive parameters in allopatric and sympatric populations of these species. While E. Preissiana and E. buprestium were morphometrically distinct in allopatry, a small number of intermediate individuals occurred in one of the two sympatric populations examined. These intermediates set less fruit per plant than the parental species on average, a fact consistent with the hypothesis that they were hybrids showing partial F2 breakdown. The demonstration that New Holland honeyeaters (Phylidonyris novae-hollandiae) carried pollen of both parental species in a sympatric population was interpreted as further evidence in support of the occurrence of hybridization. The possible hybrid status of E. chrysantha Blakely & Steedman was investigated through determining its morphometric relationships in a multivariate analysis of E. sepulcralis F. Muell., E. Preissiana and E. buprestium. E. chrysantha was intermediate between E. sepulcralis and E. preissiana, and distinguishable from E. preissiana-E. buprestium hybrids in this analysis. The taxonomic and evolutionary implications of the study are discussed.

Discipline: Do Teachers and Psychologists Agree?

1984 ◽  
Vol 54 (3) ◽  
pp. 835-839 ◽  
Author(s):  
Edward W. Ziegler ◽  
D. Larry Smith
Keyword(s):  
Multivariate Analysis ◽  
Elementary Teachers ◽  
Classroom Management ◽  
Secondary Teachers ◽  
Analysis Of Variance ◽  
Teaching Experience ◽  
Public School Teachers ◽  
School Teachers ◽  
Management Implications ◽  
Main Effects

An attitude survey based on a review of psychological literature on discipline was constructed and administered to public school teachers. Differences in teachers' agreement with the psychologists' statements by level taught and years of experience were analyzed by a 2 × 2 multivariate analysis of variance. No main effects or interactions were observed. Elementary teachers with the least teaching experience registered strongest agreements with the psychologists, while secondary teachers with the most experience expressed the least agreement. Greatest disagreement between teachers and psychologists was found on statements regarding punishment as a means of classroom management. Implications for teachers' education were discussed.

The Effects of Burning and Simulated Grazing on Productivity, Forage Quality, Mortality and Flowering of Eight Subalpine Herbs in Kosciusko National Park.

1991 ◽  
Vol 39 (2) ◽  
pp. 97 ◽  
Author(s):  
JH Leigh ◽  
DH Wood ◽  
AV Slee ◽  
MD Holgate
Keyword(s):  
Protein Content ◽  
Biomass Production ◽  
National Park ◽  
Forage Quality ◽  
Perennial Grasses ◽  
Plant Mortality ◽  
Management Implications ◽  
Simulated Grazing ◽  
Domestic Stock

The effects of simulated grazing and burning on biomass production, forage quality (CP and DM digestibility), plant mortality and flowering of 4 native perennial grasses (Poa phillipsiana, P. sieberana, Danthonia pilosa and Festuca asperula) and four perennial forbs (Aciphylla simplicifolia, Arthropodium milleflorum, Bulbine bulbosa and Hypochoeris radicata) growing in Kosciusko National Park were studied over a 16-month period. Cutting at 8-week intervals reduced the amount of regrowth at successive harvests as well as the survival of individuals. The season in which a single cut was made generally had a greater effect on the amount of regrowth than length of the regrowth period. Burning promoted flowering and improved the forage quality of the grasses. Rabbits bred only when they were able to obtain forage with a minimum protein content of 14%, provided mainly by the forb species. The management implications resulting from the interaction of fire and grazing, particularly by rabbits and domestic stock, for ecosystem quality are discussed.

Sign in / Sign up

Export Citation Format

Share Document