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Highlights

Botanik

Flore d’Afrique centrale – Spermatophyta, nouvelle série.

NL: In Centraal Afrika is de familie Ericaceae vertegenwoordigd door de geslachten Erica (7 soorten), Agarista (1 soort) en Vaccinium (1 soort). Dit deel omvat gebruikersvriendelijke sleutels tot alle taxa alsmede 5 gedetailleerde illustraties. De familie is beperkt tot de submontane en montane delen van het gebied dat door deze Flora wordt bestreken. Voor alle soorten is er een volledige beschrijving, meest belangrijke synoniemen, gegevens over hun verspreiding, habitat, lokale namen en gebruik alsook referenties naar additionele literatuur en citatie van representatieve herbariumexemplaren. 5 gedetailleerde tekeningen. 

ENG: In Central Africa, the family Ericaceae is represented by the genera Erica (7 species), Agarista (1 species) and Vaccinium (1 species). This volume includes user-friendly keys to all taxa as well as 5 detailed full-page illustrations. The family is restricted to submontane and montane parts of the area covered by this Flora. All species come with a full description, most important synonyms, data on their distribution, habitat, vernacular names and uses, as well as references to additional literature and the citation of representative herbarium specimens. 5 detailed drawings. 

FR: En Afrique centrale, la famille des Ericaceae est représentée par les genres Erica (7 espèces), Agarista (1 espèce) et Vaccinium (1 espèce). Ce volume comprend des clefs conviviales à tous les taxons ainsi que 5 illustrations détaillées. La famille est limitée aux parties submontagnardes et montagnardes de la zone couverte par cette Flore. Toutes les espèces sont livrés avec une description complète, synonymes les plus importantes, les données sur leur distribution, l'habitat, les noms vernaculaires et les usages, ainsi que des références à la littérature supplémentaire et la citation des spécimens d'herbier représentatives. 5 dessins détaillés.

9.00 EUR

Die neue, große und umfassende Flora der Kanarischen Inseln

Im vorliegenden Werk werden auf 1.300 Seiten über 2.000 Farn- und Blütenpflanzen der Kanarischen Inseln in Wort und Bild dargestellt. Fast alle der etwa 650 endemischen Sippen werden mit einem oder mehreren Fotos abgebildet. Hinzu kommen zahlreiche, meist mediterrane, eingebürgerte und invasive Arten.

Über 2.400 Farbfotos, darunter zahlreiche Detailaufnahmen, 

ermöglichen eine sichere Bestimmung der auf den Kanaren vorkommenden Arten. Im Text finden sich außerdem Angaben zu 200 weiteren Arten, wie man sie unterscheidet und auf welchen Inseln sie vorkommen.

Im einleitenden Teil werden die einzelnen Vegetationsstufen beschrieben, des Weiteren die Inseln und ihre Entstehung und die Entwicklung der Flora.

Dieses Buch ist eine unverzichtbare Ergänzung zu den bisher vorliegenden Bestimmungsbüchern. Unentbehrlich ist es für alle Pflanzenliebhaber der Kanaren: für Botaniker, Studenten, Lehrer als auch für Touristen.

99.00 EUR

A Field Guide, Second enlarged edition

This first field guide of the wildflowers in the Azores provides short descriptions for 650 of the about 1200 species of vascular plants found in the islands, completed by 380 full-colour photographs. Not only the most prevalent species but also rare and unusual plants of startling beauty are illustrated and described, some of them for the first time.

Much emphasis is given to endemic species that grow nowhere else in the world and plant invaders that constitute a serious threat to natural ecosystems of the Azores. A useful glossary in English, Portuguese and German introduces lay readers to the scientific terminology. An invaluable aid for all plant lovers in the Azores: Students, teachers, farmers, rangers, scientists, tourists.

35.00 EUR

Neuerscheinungen

Farming & Rural Systems Economics

Policy Analysis using a Household Modelling Approach

Agricultural Policies in developing countries, especially in Bhutan is constrained by lack of evidence based policy decision making research tools. This book focuses on the resource allocation decisions of Agricultural households in Bhutan modelled through a non-separable household model approach which is solved using the General Algebraic Modelling System (GAMS) solver. In Bhutan, the farms are increasingly coming into conflict with wild life. Agriculture production in Bhutan is constraint by high input costs and the agriculture product losses to wild animals are very high. The farmers face the dilemma of losing a major part of their agricultural produce to the wild animals. As a result, the farmers have increasingly left their farms fallow. Rural to urban migration is increasing and the domestic food production is not able to meet the country’s demand. The country imports more than 80% of its food requirements from the neighbouring countries, which is vulnerable to compromising on food security, food quality and food safety. This study simulates the resource allocation behaviour of the agricultural households in response to the choice of various agricultural policies. The results suggest that the household’s motivation to increase production can be achieved through favourable incentive schemes. A single policy may have different impacts among the households located in different regions.

28.00 EUR

Botanik

Farming & Rural Systems Economics

Impact of Transaction Costs on Regional Maize Markets

Vast areas of arid and semi-arid areas of Kenya are faced by development inequality, poverty and food insecurity. The study on market integration aims to provide insights for enhanced market access. The recent food crises are of food policy concern on scarce resource distribution under transaction costs. The research investigates whether surplus and deficit regional maize markets are integrated. Particularly, the study aims at providing insights for enhanced participation of marginalized smallholders into commercialized agriculture through improved market access. It further assesses the adjustment period for prices shocks in regional maize markets. The study carries out simulations of the impacts of price volatility and transaction costs on economic agents along maize supply chain in marginalized areas of Kenya. It is evident that though liberalized free trade market economy system, agricultural and trade policies require further reforms for effective supply and demand response. Though, there is need to stabilize extreme price volatility to avert consequences on poor population. Since market systems in Kenya lack coordinated stakeholders’ holistic approach, there is a need to promote integration of key players  in the public and private sector for reducing transaction costs.

28.00 EUR

Backhuys Veröffentlichungen

Rhabdocoela: Typhloplanidae

The phylum Platyhelminthes is a major clade of worms, with about 29,000 species (after Zhang, 2011). It includes animals with diverse lifestyles, but a majority are parasites, grouped within the Neodermata. The free-living species inhabit marine, freshwater, brackish and terrestrial environments and form the paraphyletic “Turbellaria”, with about 6,500 described species in three main clades: Catenulida, Macrostomorpha and Rhabdocoela.

Within the Rhabdocoela, Typloplanidae occurs all over the world and is one of the most species-rich families.

85.60 EUR

Kommunikation & Beratung

Insights into Farmer Citizen Science in Honduras - Dieser Titel ist auch als PDF Version erhältlich!

Farmer-participatory methods have become widespread in agricultural research for development. Researchers and donors have increasingly recognised that highly diverse local challenges to agricultural production, including climate change, may not be solved by top-down generic approaches, but require farmer-selected solutions. In participatory variety selection (PVS), for example, groups of farmers jointly select locally suitable germplasm varieties. But such a group-based participatory approach to variety selection for climate adaptation also brings new limitations: Farmer attendance is often limited, a shared plot does not always represent every participant’s on-farm conditions well, and PVS is difficult to scale because it relies on organised farmer groups and high external facilitation efforts.

This study explores a pathway to out-scaling PVS by using new methods from citizen science, which has become popular recently especially in ecological and environmental research. In Crowdsourcing Crop Improvement (CCI), many farmers perform a small experiment on their farm by growing small quantities of just three alternative crop varieties, observing their growth along the growing period, and reporting simple observations to researchers. This way, farmers may experientially discover a variety that suits their site-specific needs and preferences better than the current one. Researchers, on the other hand, may use CCI as a research tool to screen new crosses and validate new varieties by farmer-generated data from a large range of locations and environments, as well as to disseminate genetic diversity in the landscape. Based on intensive fieldwork in four regions of Honduras, Central America, and using a mix of qualitative and quantitative methods, such as choice experiments, this study evaluates CCI for its appropriateness to serve both farmers and researchers.

25.60 EUR

Botanik

Die neue, große und umfassende Flora der Kanarischen Inseln

Im vorliegenden Werk werden auf 1.300 Seiten über 2.000 Farn- und Blütenpflanzen der Kanarischen Inseln in Wort und Bild dargestellt. Fast alle der etwa 650 endemischen Sippen werden mit einem oder mehreren Fotos abgebildet. Hinzu kommen zahlreiche, meist mediterrane, eingebürgerte und invasive Arten.

Über 2.400 Farbfotos, darunter zahlreiche Detailaufnahmen, 

ermöglichen eine sichere Bestimmung der auf den Kanaren vorkommenden Arten. Im Text finden sich außerdem Angaben zu 200 weiteren Arten, wie man sie unterscheidet und auf welchen Inseln sie vorkommen.

Im einleitenden Teil werden die einzelnen Vegetationsstufen beschrieben, des Weiteren die Inseln und ihre Entstehung und die Entwicklung der Flora.

Dieses Buch ist eine unverzichtbare Ergänzung zu den bisher vorliegenden Bestimmungsbüchern. Unentbehrlich ist es für alle Pflanzenliebhaber der Kanaren: für Botaniker, Studenten, Lehrer als auch für Touristen.

99.00 EUR