Recreation, tourism and nature in a changing world : proceedings of the fifth international conference on monitoring and management of visitor flows in recreational and protected areas : Wageningen, the Netherlands, May 30-June 3, 2010

Proceedings of the fifth international conference on monitoring and management of visitor flows in recreational and protected areas : Wageningen, the Netherlands, May 30-June 3, 201

Management Factors Influence On The Fatty Acid Content And Composition Of Forages

Demand for ruminant-derived products high in beneficial fatty acids (FA) has led to a desire to maximize the alpha-linolenic acid (ALA) and total FA (ΣFA) content of forage crops. Several management factors affect the ALA and ΣFA content of forages, including phenology, species, season, and nitrogen fertility. Yet, the influence of harvest management decisions that affect wilting time of conserved forages is under-studied. Similarly, the majority of published research regarding ALA and ΣFA content is of cool season (C3 photosynthetic) temperate perennial forage species, and not warm season (C4 photosynthetic) annual species. Sample preservation methodologies used in published research are often too expensive and time consuming for desired practicality, or unreliable. This dissertation aids in addressing these deficiencies. In the first study, forced hot air drying of forage samples was shown to be unreliable for accurate FA analysis, and an alternative methodology was established utilizing brief microwave pretreatment of small fresh weight samples prior to forced hot air drying, yielding results similar in accuracy to lyophilized samples. Oxidative losses of ground dried forage samples were also examined, again suggesting that microwave pretreatment prior to forced hot air drying is a fast, inexpensive and otherwise desirable choice for forage sample preservation in anticipation of later FA analysis. A second study investigated two warm season annual forage species (sorghum-sudangrass and pearl millet), showing that maturity-associated declines in whole plant ALA and ΣFA content are largely a product of an increasing ratio of ALA- and ΣFA-scarce pseudostem fractions, and only secondarily resultant of maturity associated declines within individual plant fractions. Lamina mass ratio was identified as a correlate with ALA and ΣFA content, at least as useful as two common correlates - crude protein and neutral detergent fiber content. A third study also showed the critical influence of crop maturity upon ALA and ΣFA content in two warm season annual forages (pearl millet and sudangrass), in addition to differences between species and those resultant from differing nitrogen fertility. Conserved forage harvest decisions were evaluated in the fourth study. No difference was found between wide and narrow swath treatments (70% and 40% of mower width, respectively) of AM and PM mown reed canarygrass, but there was evidence to suggest that AM mowing may allow for a higher content of ALA and ΣFA content relative to PM mowing. Ensiling was also found to decrease ALA content or proportion. In conclusion, management choices promoting grazing and/or harvesting of a higher laminae proportion, optimizing nitrogen fertility, and suitable choice of species for meeting these goals may be the best way to maximize the ALA and ΣFA content of forages grown for livestock. AM mowing may reduce ALA and ΣFA content losses otherwise caused by overnight wilting of forages mown for conservation, and microwave pretreatment prior to forced hot air drying is an advisable sample preservation methodology for researchers furthering the study of forage ALA and ΣFA content, when lyophilization is impractical or too expensive

Hoe fietsers de vraag naar natuur meten

Recreanten en toeristen trekken naar verschillende soorten gebieden. Onderzoekers van Alterra bestuderen het wat, waar en waarom. Zo kunnen vraag en aanbod beter op elkaar worden afgestemd

Deutsch als Kommunikationssprache im Klassenraum. Wie geht das?

Der Text zeigt Möglichkeiten auf, Schüler im Unterricht Deutsch als Fremdsprache zu motivieren und zur Kommunikation in der fremden Sprache anzuhalten. Die geschilderten Beispiele und Vorgehensweisen entstammen dem Unterricht des Autors, die Einsichten aber, die sich daran gewinnen lassen, reichen weit über diesen Kontext hinaus. Dabei handelt es sich nicht um Rezeptwissen mit Erfolgsgarantie, sondern um Vorschläge, die als Modell und Anregung auch für sonstigen Unterricht in Deutsch als Fremdsprache dienen können

Strangers at Home: Amish and Mennonite Women in History

Review of: Strangers at Home: Amish and Mennonite Women in History. Umble, Diane Zimmerman; Schmidt, Kimberly D.; and Reschly, Steven D., ed

Creditors’ Rights—Effect of Judgment Lien on a Joint Tenancy Later Severed

In Hein v. W. T. Rawleigh Co. a husband and wife acquired real property in joint tenancy with the wife furnishing all the consideration. However, prior to this acquisition there had been a judgment entered against the husband in another action. The husband conveyed his rights to his wife who later died. Held: The wife’s devisee was entitled to have title to the property quieted subject to the judgment creditor’s lien on an undivided half. This decision presents the alternative questions: (1) whether a judgment lien on one joint tenant’s rights continues undisturbed after a severance caused by release of the debtor’s rights or (2) whether after severance the lien attaches to his severed interest and ceases as to the joint tenant’s rights. In conclusion, this case changes no existing rule of law. Liens may attach to a joint tenant’s rights and may become liens against the whole estate or be lost completely depending on who takes by the right of survivorship. If the property is severed during the lifetime of the tenants, the lien attaches to the judgment debtor’s share.